What are the cheapest airlines flying from San Francisco to London Heathrow Airport round-trip?

Currently priced at £470, Iberia will fly you from San Francisco to London Heathrow Airport and back. In addition to Iberia, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Scandinavian Airlines and Virgin Atlantic - these airlines can fly you to your destination from £471 and £472, respectively. Users have found that Iberia is 26% cheaper than the other options available to this destination.

What are the cheapest airlines to fly from San Francisco to London Heathrow Airport one-way?

To fly one-way, consider booking your trip with WestJet, which is currently one of the cheapest options available, starting at £258. JetBlue flights start at £259 while deals on Iberia start at £290 one-way.

What are the cheapest flights from San Francisco to London Heathrow Airport?

On average you can expect to pay £2,061 for a flight from San Francisco to London Heathrow Airport. The cheapest flight overall is £298 while the most popular route, (San Francisco - London Heathrow) is currently priced at £402.

What are the most reliable airlines from San Francisco to London Heathrow Airport?

Consider Air Canada (84%), Austrian Airlines (84%) or United Airlines (84%) when booking your flight. These represent the most reliable airlines when flying from San Francisco to London Heathrow Airport.

What are the most popular airlines that fly from San Francisco to London Heathrow Airport?

The most popular airlines flying from San Francisco to London Heathrow Airport are Air Canada, Finnair and British Airways. Something to consider prior to booking your flight.

What is the cheapest day to fly round-trip from San Francisco to London Heathrow Airport?

Users have found that leaving on a Tuesday can be a cost-effective option. It’s possible to save up to 27% on your flight compared to booking on days when demand is much higher.

What is the cheapest month to fly from San Francisco to London Heathrow Airport?

Our data shows that October tends to be the cheapest month to fly to London Heathrow Airport from San Francisco. Users have commonly found prices around £627 for the month, but tickets can be as low as £414. Due to multiple factors, prepare for potentially higher prices in June.

What airport do you fly from for flights from San Francisco to London Heathrow?

For a flight from San Francisco to London Heathrow, you will be flying from San Francisco. San Francisco (SFO) is just 11.8 mi from the center of the city. San Francisco is the only San Francisco airport and it handles 29 outbound flights to London Heathrow per day. 10 airlines have flights to London Heathrow from San Francisco on a regular basis.

Can I find deals for flights from San Francisco to Heathrow that include hotel bookings?

Yes. In addition to deals on San Francisco to Heathrow flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from San Francisco to Heathrow?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Francisco to Heathrow.

Can I find deals for business class flights from San Francisco to Heathrow?

Yes. Cheapflights offers flight deals from San Francisco to Heathrow by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

£232+ Flights from San Francisco to London Heathrow Airport

The best prices from San Francisco to London Heathrow are usually found in October or September, booked 26 days in advance, depart on a Wednesday or Tuesday and return on a Tuesday

Cheap flight deals from San Francisco to Heathrow

Round-trip from	£470
One-way from	£232
Popular in	June
Cheapest in	October
Average price	£546
Good round-trip deal	£504 or less
Good one-way deal	£322 or less

Iberia
10/3-20/3
Nonstop
21h 45m total
San Francisco to London

Search Deals

24/3
2 total stops
59h 52m total
San Francisco to London

Search Deals

Highest demand for flights based on searches. 21% potential increase in price (£136 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease (£23 potential savings vs. average return price).

Search Deals

Average for round-trip flights in February 2025

Search Deals

Price to beat on a round-trip flight from San Francisco to London Heathrow.

Search Deals

Price to beat on a one-way flight from San Francisco to London Heathrow.

Search Deals

Find flight deals from San Francisco to Heathrow

Cheapest flights from San Francisco to Heathrow
Explore the most affordable flight options available from San Francisco to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 14 February 2025.

Mon 10/318:30SFO - LHR

Nonstop10h 30mIberia

Thu 20/311:45LHR - SFO

Nonstop11h 15mIberia

Deal found 13/2£470

Thu 6/317:30SFO - LHR

1 stop14h 30mScandinavian Airlines

Sun 9/321:05LHR - SFO

2 stops26h 35mScandinavian Airlines

Deal found 13/2£471

Sun 2/316:40SFO - LHR

Nonstop10h 15mVirgin Atlantic

Tue 18/311:40LHR - SFO

Nonstop11h 10mVirgin Atlantic

Deal found 12/2£472

Sun 2/313:00SFO - LHR

1 stop13h 10mMultiple Airlines

Tue 18/311:10LHR - SFO

1 stop15h 35mMultiple Airlines

Deal found 13/2£475

Wed 19/313:50SFO - LHR

Nonstop10h 35mUnited Airlines

Wed 26/308:55LHR - SFO

1 stop15h 30mUnited Airlines

Deal found 13/2£489

Sun 2/316:40SFO - LHR

Nonstop10h 15mDelta

Tue 11/306:30LHR - SFO

1 stop13h 20mDelta

Deal found 13/2£492

Tue 25/217:20SFO - LHR

1 stop14h 15mAer Lingus

Tue 18/309:50LHR - SFO

1 stop13h 40mAer Lingus

Deal found 13/2£493

Sun 2/312:09SFO - LHR

1 stop14h 26mKLM

Tue 11/306:30LHR - SFO

1 stop13h 20mKLM

Deal found 12/2£496

Sun 2/320:40SFO - LHR

Nonstop10h 35mFinnair

Tue 18/311:45LHR - SFO

Nonstop11h 15mFinnair

Deal found 13/2£497

Tue 18/219:25SFO - LHR

1 stop14h 25mSWISS

Tue 4/308:55LHR - SFO

1 stop15h 30mSWISS

Deal found 13/2£499

Tue 1/408:30SFO - LHR

2 stops17h 30mAir Canada

Tue 8/409:30LHR - SFO

2 stops19h 21mAir Canada

Deal found 13/2£509

Sun 27/419:20SFO - LHR

Nonstop10h 25mBritish Airways

Fri 9/510:45LHR - SFO

Nonstop11h 05mBritish Airways

Deal found 13/2£527

Best flights from San Francisco to Heathrow
Discover carefully curated flight deals from San Francisco to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 14 February 2025.

Mon 10/318:30SFO - LHR

Nonstop10h 30mIberia

Thu 20/311:45LHR - SFO

Nonstop11h 15mIberia

Deal found 13/2£470

Thu 6/317:30SFO - LHR

1 stop14h 30mScandinavian Airlines

Sun 9/321:05LHR - SFO

2 stops26h 35mScandinavian Airlines

Deal found 13/2£471

Sun 2/316:40SFO - LHR

Nonstop10h 15mVirgin Atlantic

Tue 18/311:40LHR - SFO

Nonstop11h 10mVirgin Atlantic

Deal found 12/2£472

Sun 2/313:00SFO - LHR

1 stop13h 10mMultiple Airlines

Tue 18/311:10LHR - SFO

1 stop15h 35mMultiple Airlines

Deal found 13/2£475

Wed 19/313:50SFO - LHR

Nonstop10h 35mUnited Airlines

Thu 27/308:55LHR - SFO

1 stop15h 30mUnited Airlines

Deal found 13/2£489

Sun 2/316:40SFO - LHR

Nonstop10h 15mDelta

Tue 11/306:30LHR - SFO

1 stop13h 20mDelta

Deal found 13/2£492

Tue 25/217:20SFO - LHR

1 stop14h 15mAer Lingus

Tue 18/309:50LHR - SFO

1 stop13h 40mAer Lingus

Deal found 13/2£493

Sun 2/312:09SFO - LHR

1 stop14h 26mKLM

Tue 11/306:30LHR - SFO

1 stop13h 20mKLM

Deal found 12/2£496

Sun 2/320:40SFO - LHR

Nonstop10h 35mFinnair

Tue 18/311:45LHR - SFO

Nonstop11h 15mFinnair

Deal found 13/2£497

Tue 1/408:30SFO - LHR

2 stops17h 30mAir Canada

Tue 8/409:30LHR - SFO

2 stops19h 21mAir Canada

Deal found 13/2£509

Tue 4/319:25SFO - LHR

1 stop15h 50mSWISS

Mon 10/318:40LHR - SFO

1 stop29h 45mSWISS

Deal found 12/2£514

Sun 27/419:20SFO - LHR

Nonstop10h 25mBritish Airways

Fri 9/510:45LHR - SFO

Nonstop11h 05mBritish Airways

Deal found 13/2£527

Direct flights from San Francisco to Heathrow
Explore direct flight options from San Francisco to Heathrow based on user searches, and compare prices and availability for your desired travel dates. Data last updated 14 February 2025.

Mon 10/318:30SFO - LHR

Nonstop10h 30mIberia

Thu 20/311:45LHR - SFO

Nonstop11h 15mIberia

Deal found 13/2£470

Sun 2/316:40SFO - LHR

Nonstop10h 15mVirgin Atlantic

Tue 18/311:40LHR - SFO

Nonstop11h 10mVirgin Atlantic

Deal found 12/2£472

Sun 2/320:40SFO - LHR

Nonstop10h 35mFinnair

Tue 18/311:45LHR - SFO

Nonstop11h 15mFinnair

Deal found 13/2£493

Sun 2/316:40SFO - LHR

Nonstop10h 15mDelta

Thu 13/311:40LHR - SFO

Nonstop11h 10mDelta

Deal found 12/2£502

Wed 2/419:20SFO - LHR

Nonstop10h 25mBritish Airways

Tue 15/414:15LHR - SFO

Nonstop11h 00mBritish Airways

Deal found 13/2£504

Sun 30/312:55SFO - LHR

Nonstop10h 30mUnited Airlines

Thu 17/410:35LHR - SFO

Nonstop11h 05mUnited Airlines

Deal found 13/2£505

Thu 20/313:50SFO - LHR

Nonstop10h 35mMultiple Airlines

Tue 1/410:35LHR - SFO

Nonstop11h 05mMultiple Airlines

Deal found 13/2£691

Sun 30/312:55SFO - LHR

Nonstop10h 30mAustrian Airlines

Sun 6/410:35LHR - SFO

Nonstop11h 05mAustrian Airlines

Deal found 13/2£826

Sun 8/616:00SFO - LHR

Nonstop10h 25mLufthansa

Fri 20/612:20LHR - SFO

Nonstop11h 00mLufthansa

Deal found 12/2£840

Last-minute flights from San Francisco to Heathrow
Discover last-minute flight deals from San Francisco to Heathrow. Data last updated 14 February 2025 and is based on user searches.

Mon 17/216:40SFO - LHR

1 stop16h 50mTAP AIR PORTUGAL

Tue 25/218:30LHR - SFO

1 stop28h 10mTAP AIR PORTUGAL

Deal found 13/2£487

Tue 18/216:35SFO - LHR

2 stops30h 35mMultiple Airlines

Tue 25/208:55LHR - SFO

1 stop15h 30mMultiple Airlines

Deal found 13/2£490

Tue 18/219:25SFO - LHR

1 stop14h 25mSWISS

Tue 4/308:55LHR - SFO

1 stop15h 30mSWISS

Deal found 13/2£499

Tue 18/216:40SFO - LHR

Nonstop10h 15mVirgin Atlantic

Tue 4/306:30LHR - SFO

1 stop13h 20mVirgin Atlantic

Deal found 13/2£505

Tue 18/212:05SFO - LHR

1 stop14h 30mAir France

Sun 23/214:30LHR - SFO

1 stop17h 16mAir France

Deal found 13/2£728

Wed 19/212:50SFO - LHR

Nonstop10h 35mUnited Airlines

Fri 28/208:55LHR - SFO

1 stop15h 30mUnited Airlines

Deal found 13/2£513

Wed 19/210:15SFO - LHR

1 stop15h 45mDelta

Thu 27/206:30LHR - SFO

1 stop13h 20mDelta

Deal found 13/2£522

Wed 19/208:25SFO - LHR

2 stops21h 40mAustrian Airlines

Wed 26/209:05LHR - SFO

2 stops41h 40mAustrian Airlines

Deal found 13/2£561

Wed 19/220:40SFO - LHR

Nonstop10h 35mBritish Airways

Fri 28/211:45LHR - SFO

Nonstop11h 15mBritish Airways

Deal found 13/2£622

Thu 20/217:30SFO - LHR

1 stop14h 30mScandinavian Airlines

Thu 27/206:40LHR - SFO

1 stop17h 00mScandinavian Airlines

Deal found 13/2£517

Thu 20/214:40SFO - LHR

1 stop14h 05mLufthansa

Tue 25/208:45LHR - SFO

1 stop18h 00mLufthansa

Deal found 13/2£556

Fri 21/208:30SFO - LHR

2 stops19h 20mAir Canada

Mon 3/313:00LHR - SFO

1 stop15h 56mAir Canada

Deal found 13/2£579

One-way flights from San Francisco to Heathrow
Search for one-way flight options from San Francisco to Heathrow. Find affordable one-way fares based on user searches. Data last updated 14 February 2025.

Mon 24/317:58SFO - LHR

2 stops59h 52mMultiple Airlines

Deal found 13/2£232

Tue 11/313:55SFO - LHR

1 stop15h 55mWestJet

Deal found 13/2£258

Tue 25/208:30SFO - LHR

1 stop13h 25mJetBlue

Deal found 13/2£259

Tue 20/520:00SFO - LHR

1 stop16h 05mIberia

Deal found 13/2£290

Wed 12/318:30SFO - LHR

1 stop14h 30mScandinavian Airlines

Deal found 12/2£292

Tue 22/419:20SFO - LHR

Nonstop10h 25mBritish Airways

Deal found 13/2£307

Fri 14/318:25SFO - LHR

Nonstop10h 35mBrussels Airlines

Deal found 13/2£310

Fri 14/313:50SFO - LHR

Nonstop10h 35mLufthansa

Deal found 12/2£310

Tue 20/519:20SFO - LHR

Nonstop10h 25mFinnair

Deal found 13/2£311

Sun 6/412:55SFO - LHR

Nonstop10h 30mUnited Airlines

Deal found 13/2£323

Tue 6/520:00SFO - LHR

1 stop16h 05mVueling

Deal found 13/2£326

Tue 22/408:30SFO - LHR

2 stops17h 30mAir Canada

Deal found 13/2£330

Find flights from San Francisco to Heathrow within your budget

Fly from

Fly to

Route

Depart

Return

Price

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Mon 10/3

18:30-12:00

Nonstop10h 30m

London Heathrow

Thu 20/3

11:45-16:00

Nonstop11h 15m

£470

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Thu 6/3

17:30-16:00

1 stop14h 30m

London Heathrow

Sun 9/3

21:05-16:40

2 stops26h 35m

£471

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Sun 2/3

16:40-10:55

Nonstop10h 15m

London Heathrow

Tue 18/3

11:40-15:50

Nonstop11h 10m

£472

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Sun 2/3

13:00-10:10

1 stop13h 10m

London Heathrow

Tue 18/3

11:10-19:45

1 stop15h 35m

£475

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Wed 19/3

13:50-07:25

Nonstop10h 35m

London Heathrow

Wed 26/3

08:55-17:25

1 stop15h 30m

£489

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Sun 2/3

16:40-10:55

Nonstop10h 15m

London Heathrow

Tue 11/3

06:30-12:50

1 stop13h 20m

£492

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Tue 4/3

08:37-10:10

1 stop17h 33m

London Heathrow

Tue 18/3

08:55-21:42

2 stops19h 47m

£493

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Sun 2/3

17:30-12:00

Nonstop10h 30m

London Heathrow

Tue 18/3

11:45-16:00

Nonstop11h 15m

£496

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Mon 31/3

14:19-13:30

1 stop15h 11m

London Heathrow

Wed 16/4

09:20-18:02

1 stop16h 42m

£517

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Sun 2/3

19:25-17:50

1 stop14h 25m

London Heathrow

Mon 10/3

20:05-17:25

1 stop28h 20m

£526

Flights are sorted by cheapest return flights first.

Deals found on 13/2

Showing 1-10 of 34 results

Best time to book a flight from San Francisco to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from San Francisco with our price prediction graph.

Estimated return price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from San Francisco to Heathrow

Get recent, data-driven insights about flights from San Francisco to Heathrow including ideal travel times, pricing trends, and more.

How far ahead should I book a flight from San Francisco to London Heathrow Airport?

Booking 26 days in advance of your planned departure date is, on average, the best time to get cheap flights from San Francisco to London Heathrow Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from San Francisco to London Heathrow Airport?

Currently, January is the cheapest month in which you can book a flight from San Francisco to London Heathrow Airport (average of £112). Flying from San Francisco to London Heathrow Airport in August is currently the most expensive (average of £162). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SFO to LHR?

When flying from San Francisco to London Heathrow Airport, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 17% versus a flight in the morning.

What is the cheapest day to fly from San Francisco to London Heathrow Airport?

Travellers seeking maximum savings on their San Francisco to London Heathrow Airport flight should consider departing on Wednesday evenings when fares are most often at their lowest. Thursday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from San Francisco to London Heathrow Airport

The most flights from SFO to LHR are scheduled on a Wednesday (33 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (27 on average).

Rainfall in Heathrow by month

In terms of precipitation, rainfall in London Heathrow Airport ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London Heathrow Airport when rainfall is around 40.0 mm.

Temperature in Heathrow by month

If weather is an important factor for your trip to London Heathrow Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

Reviews of airlines servicing Heathrow

To help decide which airline to fly from San Francisco to London, see what other customers have to say about Delta, KLM and Finnair. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very Good

8,307 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta

8.0

Very Good

8,307 reviews

Delta

8.0

Very Good

8,307 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

KLM

7.8

Good

1,334 reviews

Delta

8.0

Very Good

8,307 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Finnair

7.6

Good

1,279 reviews

Delta

8.0

Very Good

8,307 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Austrian Airlines

7.6

Good

778 reviews

Delta

8.0

Very Good

8,307 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

SWISS

7.5

Good

1,577 reviews

Delta

8.0

Very Good

8,307 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

What airport do you fly from for flights from San Francisco to London Heathrow?
For a flight from San Francisco to London Heathrow, you will be flying from San Francisco. San Francisco (SFO) is just 11.8 mi from the center of the city. San Francisco is the only San Francisco airport and it handles 29 outbound flights to London Heathrow per day. 10 airlines have flights to London Heathrow from San Francisco on a regular basis.
What are the cheapest airlines flying from San Francisco to London Heathrow Airport round-trip?
Currently priced at £470, Iberia will fly you from San Francisco to London Heathrow Airport and back. In addition to Iberia, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Scandinavian Airlines and Virgin Atlantic - these airlines can fly you to your destination from £471 and £472, respectively. Users have found that Iberia is 26% cheaper than the other options available to this destination.
What are the cheapest airlines to fly from San Francisco to London Heathrow Airport one-way?
To fly one-way, consider booking your trip with WestJet, which is currently one of the cheapest options available, starting at £258. JetBlue flights start at £259 while deals on Iberia start at £290 one-way.
What are the most reliable airlines from San Francisco to London Heathrow Airport?
Consider Air Canada (84%), Austrian Airlines (84%) or United Airlines (84%) when booking your flight. These represent the most reliable airlines when flying from San Francisco to London Heathrow Airport.
What are the cheapest flights from San Francisco to London Heathrow Airport?
On average you can expect to pay £2,061 for a flight from San Francisco to London Heathrow Airport. The cheapest flight overall is £298 while the most popular route, (San Francisco - London Heathrow) is currently priced at £402.
Can I find deals for flights from San Francisco to Heathrow that include hotel bookings?
Yes. In addition to deals on San Francisco to Heathrow flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from San Francisco to Heathrow?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Francisco to Heathrow.
Can I find deals for business class flights from San Francisco to Heathrow?
Yes. Cheapflights offers flight deals from San Francisco to Heathrow by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from San Francisco to London Heathrow Airport?
Currently, January is the cheapest month in which you can book a flight from San Francisco to London Heathrow Airport (average of £112). Flying from San Francisco to London Heathrow Airport in August is currently the most expensive (average of £162). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Deal

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Croydon

Milton Keynes

Gatwick

Slough

Luton

Ilford

Hayes

Eastbourne

Swindon

Northampton

Southend-on-Sea

Wembley

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Winchester

Crawley

Southall

Watford

Browse thousands of different options on Cheapflights for your next trip

Top 10 airlines flying from San Francisco to Heathrow

Airline	Cheapest	Average	Flexibility	On-time
Finnair	Cheapest£392	Average£710	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
TAP AIR PORTUGAL	Cheapest£420	Average£437	FlexibilityNo cancel fee	On-timeN/A	Search TAP AIR PORTUGAL flights
Virgin Atlantic	Cheapest£453	Average£624	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
Iberia	Cheapest£459	Average£579	FlexibilityNo cancel fee	On-time77%	Search Iberia flights
British Airways	Cheapest£462	Average£603	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Air Canada	Cheapest£467	Average£717	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
KLM	Cheapest£475	Average£544	FlexibilityNo cancel fee	On-time75%	Search KLM flights
United Airlines	Cheapest£488	Average£757	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Lufthansa	Cheapest£494	Average£751	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
Delta	Cheapest£549	Average£654	FlexibilityNo cancel fee	On-timeN/A	Search Delta flights

Fly with Cheapflights

How does Cheapflights help users find flights from San Francisco to Heathrow?

Cheapflights helps you search for flights from San Francisco to Heathrow via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from San Francisco to Heathrow?

Cheapflights simply makes it quick and affordable to book flights from San Francisco to Heathrow by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from San Francisco to Heathrow with no change fees?

Yes! Cheapflights helps users easily find flights from San Francisco to Heathrow with no change fees.

Can Cheapflights notify me if prices for flights from San Francisco to Heathrow become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Heathrow from San Francisco today and book when prices fit your budget.

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Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

Cheap flights from San Francisco to London Heathrow Airport from £232

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 24/3. Fares are subject to change and may not be available on all flights or dates of travel.

The best prices from San Francisco to London Heathrow are usually found in October or September, booked 26 days in advance, depart on a Wednesday or Tuesday and return on a Tuesday

Cheap flight deals from San Francisco to Heathrow

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from San Francisco to Heathrow

Cheapest flights from San Francisco to HeathrowExplore the most affordable flight options available from San Francisco to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 14 February 2025.

Explore the most affordable flight options available from San Francisco to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 14 February 2025.

Find flights from San Francisco to Heathrow within your budget

Best time to book a flight from San Francisco to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from San Francisco with our price prediction graph.

Travel insights for flights from San Francisco to Heathrow

Get recent, data-driven insights about flights from San Francisco to Heathrow including ideal travel times, pricing trends, and more.

How far ahead should I book a flight from San Francisco to London Heathrow Airport?

Use this chart to determine the optimal time to book a return flight from San Francisco to Heathrow. Price data was last updated on 7 February 2025.

What is the cheapest month to book a flight from San Francisco to London Heathrow Airport?

What is the cheapest time of day to fly from SFO to LHR?

Find hourly flight availability from San Francisco to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 14 February 2025.

What is the cheapest day to fly from San Francisco to London Heathrow Airport?

Use this chart to determine the cheapest time to fly return from San Francisco to Heathrow. Price data was last updated on 10 February 2025.

Weekly flight availability from San Francisco to London Heathrow Airport

Rainfall in Heathrow by month

Plan your trip to Heathrow by taking into account the average rainfall totals by month.

Temperature in Heathrow by month

Plan your trip to Heathrow by taking into account the average temperature totals by month.

Reviews of airlines servicing Heathrow

To help decide which airline to fly from San Francisco to London, see what other customers have to say about Delta, KLM and Finnair. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from San Francisco to Heathrow. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly from for flights from San Francisco to London Heathrow?

What are the cheapest airlines flying from San Francisco to London Heathrow Airport round-trip?

What are the cheapest airlines to fly from San Francisco to London Heathrow Airport one-way?

What are the most reliable airlines from San Francisco to London Heathrow Airport?

What are the cheapest flights from San Francisco to London Heathrow Airport?

Can I find deals for flights from San Francisco to Heathrow that include hotel bookings?

How can I find direct flights from San Francisco to Heathrow?

Can I find deals for business class flights from San Francisco to Heathrow?

What is the cheapest month to book a flight from San Francisco to London Heathrow Airport?

Travelling to a place near San Francisco?

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Alternative routes for San Francisco to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.

Top 10 airlines flying from San Francisco to Heathrow

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Cheapest flights from San Francisco to Heathrow
Explore the most affordable flight options available from San Francisco to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 14 February 2025.