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

Our cheapest airline available from San Francisco to London is TAP AIR PORTUGAL. Our recent data shows that you can find tickets from as low as £467 on this airline. Additional options worth looking into are Iberia and Virgin Atlantic, starting at £467 and £470 round-trip. TAP AIR PORTUGAL is currently priced 24% below the average price you’ll pay for this route.

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

For one-way options, check prices for Iberia. According to our data, you can fly for as low as £243. Users have also found prices from £244 and £254 on Vueling and JetBlue, respectively.

What are the most popular routes from San Francisco to London?

While some choose either San Francisco - London City or San Francisco - London Gatwick, San Francisco - London Heathrow is the most popular route from San Francisco to London.

What are the cheapest flights from San Francisco to London?

Looking at all options, your cheapest flight can be booked for £291. While the most popular route (San Francisco - London Heathrow) can be booked for £398 on average our data indicates £2,058 when flying from San Francisco to London.

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

Before booking your flight to London from San Francisco, check out the most reliable airlines to get you to your destination on time: Air Canada (85%), Austrian Airlines (85%), United Airlines( 85%).

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

Before booking your flight from San Francisco to London check out the most popular airlines for this route: Air Canada, Finnair or British Airways.

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

Friday flights are generally found to be more expensive for flights from San Francisco to London. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to London.

How far in advance should I book a flight from San Francisco to London?

Find a great deal and save up to 17% by booking at least 21 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from San Francisco to London within the next two weeks, with the cheapest ticket starting at £584.

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

Flights from San Francisco to London lean towards being more expensive in June. Prices are generally better when you fly from San Francisco to London in October, with the cheapest ticket starting at £411.

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

Located just 11.8 mi from the city center, San Francisco is the airport most travelers will use when flying to London from San Francisco. Booking flights from San Francisco (SFO) to London should be relatively easy as there are 26 daily outbound flights to London from 10 different airlines.

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

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

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

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

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

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

£242+ Flights from San Francisco to London

The best prices from San Francisco to London are usually found in October or September, booked 20 days in advance, depart on a Wednesday or Tuesday and return on a Tuesday

Cheap flight deals from San Francisco to London

Round-trip from	£467
One-way from	£242
Popular in	June
Cheapest in	October
Average price	£543
Good round-trip deal	£497 or less
Good one-way deal	£309 or less

TAP AIR PORTUGAL
3/3-10/3
3 total stops
64h 15m total
San Francisco to London

Search Deals

10/4
2 total stops
17h 50m total
San Francisco to London

Search Deals

Highest demand for flights based on searches. 20% potential increase in price (£129 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease (£22 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 (LON).

Search Deals

Price to beat on a one-way flight from San Francisco to London (LON).

Search Deals

Find flight deals from San Francisco to London

Cheapest flights from San Francisco to London
Explore the most affordable flight options available from San Francisco to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 February 2025.

Mon 3/316:40SFO - LGW

1 stop15h 05mTAP AIR PORTUGAL

Mon 10/321:30LGW - SFO

2 stops49h 10mTAP AIR PORTUGAL

Deal found 20/2£467

Mon 20/1019:40SFO - LHR

2 stops29h 15mScandinavian Airlines

Wed 19/1119:50LHR - SFO

2 stops26h 45mScandinavian Airlines

Deal found 20/2£467

Sun 16/321:40SFO - LHR

Nonstop10h 35mIberia

Thu 3/414:15LHR - SFO

Nonstop11h 00mIberia

Deal found 20/2£467

Sun 9/317:40SFO - LHR

Nonstop10h 15mVirgin Atlantic

Tue 25/311:40LHR - SFO

Nonstop11h 10mVirgin Atlantic

Deal found 20/2£470

Tue 1/408:20SFO - STN

2 stops28h 15mMultiple Airlines

Wed 9/406:00STN - SFO

2 stops23h 45mMultiple Airlines

Deal found 21/2£472

Wed 12/320:25SFO - LGW

1 stop14h 25mSWISS

Mon 17/318:45LGW - SFO

1 stop29h 40mSWISS

Deal found 20/2£480

Tue 1/419:30SFO - LCY

1 stop14h 00mSWISS

Wed 9/409:25LCY - SFO

1 stop14h 45mSWISS

Deal found 20/2£483

Sat 8/316:35SFO - LHR

1 stop33h 35mMultiple Airlines

Fri 21/308:55LHR - SFO

1 stop15h 30mMultiple Airlines

Deal found 20/2£483

Thu 6/312:50SFO - LHR

Nonstop10h 35mUnited Airlines

Sun 16/313:45LHR - SFO

1 stop34h 40mUnited Airlines

Deal found 20/2£486

Thu 20/311:02SFO - LGW

1 stop16h 33mMultiple Airlines

Thu 27/312:00LGW - SFO

1 stop26h 16mMultiple Airlines

Deal found 20/2£489

Mon 10/307:00SFO - LHR

2 stops18h 30mAir Canada

Mon 17/308:55LHR - SFO

2 stops19h 47mAir Canada

Deal found 20/2£496

Wed 19/317:40SFO - LHR

Nonstop10h 15mDelta

Tue 25/311:40LHR - SFO

Nonstop11h 10mDelta

Deal found 21/2£500

Best flights from San Francisco to London
Discover carefully curated flight deals from San Francisco to London that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 21 February 2025.

Mon 3/316:40SFO - LGW

1 stop15h 05mTAP AIR PORTUGAL

Mon 10/321:30LGW - SFO

2 stops49h 10mTAP AIR PORTUGAL

Deal found 20/2£467

Sun 16/321:40SFO - LHR

Nonstop10h 35mIberia

Thu 3/414:15LHR - SFO

Nonstop11h 00mIberia

Deal found 20/2£467

Sun 9/317:40SFO - LHR

Nonstop10h 15mVirgin Atlantic

Tue 25/311:40LHR - SFO

Nonstop11h 10mVirgin Atlantic

Deal found 20/2£470

Tue 1/408:20SFO - STN

2 stops28h 15mMultiple Airlines

Wed 9/406:00STN - SFO

2 stops23h 45mMultiple Airlines

Deal found 21/2£472

Mon 24/318:30SFO - LHR

2 stops20h 05mScandinavian Airlines

Mon 31/321:05LHR - SFO

2 stops27h 25mScandinavian Airlines

Deal found 20/2£475

Wed 12/320:25SFO - LGW

1 stop14h 25mSWISS

Mon 17/318:45LGW - SFO

1 stop29h 40mSWISS

Deal found 20/2£480

Thu 6/312:50SFO - LHR

Nonstop10h 35mUnited Airlines

Sun 16/313:45LHR - SFO

1 stop34h 40mUnited Airlines

Deal found 20/2£486

Mon 28/422:33SFO - LGW

1 stop25h 37mBritish Airways

Wed 7/515:05LGW - SFO

1 stop17h 01mBritish Airways

Deal found 21/2£486

Mon 10/307:00SFO - LHR

2 stops18h 30mAir Canada

Mon 17/308:55LHR - SFO

2 stops19h 47mAir Canada

Deal found 20/2£496

Fri 25/416:10SFO - LHR

Nonstop10h 20mDelta

Wed 7/506:30LHR - SFO

1 stop13h 15mDelta

Deal found 20/2£497

Tue 4/320:40SFO - LHR

Nonstop10h 35mFinnair

Tue 11/311:45LHR - SFO

Nonstop11h 15mFinnair

Deal found 20/2£516

Mon 3/317:20SFO - LHR

1 stop18h 30mAer Lingus

Sun 16/307:50LHR - SFO

1 stop15h 40mAer Lingus

Deal found 20/2£517

Direct flights from San Francisco to London
Explore direct flight options from San Francisco to London based on user searches, and compare prices and availability for your desired travel dates. Data last updated 21 February 2025.

Sun 16/321:40SFO - LHR

Nonstop10h 35mIberia

Thu 3/414:15LHR - SFO

Nonstop11h 00mIberia

Deal found 20/2£467

Sun 9/317:40SFO - LHR

Nonstop10h 15mVirgin Atlantic

Tue 25/311:40LHR - SFO

Nonstop11h 10mVirgin Atlantic

Deal found 20/2£470

Wed 26/321:40SFO - LHR

Nonstop10h 35mBritish Airways

Wed 2/410:45LHR - SFO

Nonstop11h 05mBritish Airways

Deal found 20/2£473

Sun 9/318:30SFO - LHR

Nonstop10h 30mFinnair

Tue 25/311:45LHR - SFO

Nonstop11h 15mFinnair

Deal found 20/2£491

Fri 18/415:55SFO - LHR

Nonstop10h 30mUnited Airlines

Sun 4/516:15LHR - SFO

Nonstop11h 05mUnited Airlines

Deal found 21/2£502

Sun 16/317:40SFO - LHR

Nonstop10h 15mDelta

Wed 14/516:25LHR - SFO

Nonstop11h 05mDelta

Deal found 20/2£514

Sun 6/419:40SFO - LHR

Nonstop10h 30mAir Canada

Sun 13/416:15LHR - SFO

Nonstop11h 05mAir Canada

Deal found 20/2£673

Sat 5/419:40SFO - LHR

Nonstop10h 30mBrussels Airlines

Mon 14/416:15LHR - SFO

Nonstop11h 05mBrussels Airlines

Deal found 20/2£700

Wed 9/419:40SFO - LHR

Nonstop10h 30mMultiple Airlines

Mon 14/412:20LHR - SFO

Nonstop11h 05mMultiple Airlines

Deal found 20/2£764

Fri 21/313:50SFO - LHR

Nonstop10h 35mLufthansa

Wed 9/416:15LHR - SFO

Nonstop11h 05mLufthansa

Deal found 20/2£776

Last-minute flights from San Francisco to London
Discover last-minute flight deals from San Francisco to London. Data last updated 21 February 2025 and is based on user searches.

Wed 26/213:00SFO - LHR

1 stop13h 10mMultiple Airlines

Mon 10/320:05LHR - SFO

1 stop28h 20mMultiple Airlines

Deal found 20/2£507

Wed 26/212:50SFO - LHR

Nonstop10h 35mUnited Airlines

Mon 10/313:45LHR - SFO

1 stop34h 40mUnited Airlines

Deal found 20/2£509

Wed 26/213:00SFO - LHR

1 stop13h 10mAir Canada

Wed 12/308:55LHR - SFO

2 stops19h 47mAir Canada

Deal found 20/2£515

Thu 27/217:30SFO - LHR

1 stop14h 30mScandinavian Airlines

Thu 6/306:40LHR - SFO

1 stop17h 00mScandinavian Airlines

Deal found 20/2£485

Thu 27/216:40SFO - LHR

Nonstop10h 15mVirgin Atlantic

Mon 3/310:00LHR - SFO

1 stop33h 50mVirgin Atlantic

Deal found 20/2£524

Sat 1/317:20SFO - LHR

1 stop13h 05mAer Lingus

Fri 7/309:50LHR - SFO

1 stop13h 40mAer Lingus

Deal found 20/2£501

Sat 1/316:40SFO - LHR

1 stop16h 50mTAP AIR PORTUGAL

Thu 6/319:55LHR - SFO

1 stop26h 20mTAP AIR PORTUGAL

Deal found 20/2£518

Sat 1/322:59SFO - LGW

1 stop27h 36mMultiple Airlines

Fri 7/314:00LGW - SFO

2 stops42h 43mMultiple Airlines

Deal found 20/2£520

Sun 2/319:25SFO - LGW

1 stop14h 25mSWISS

Mon 10/318:45LGW - SFO

1 stop29h 40mSWISS

Deal found 20/2£517

Mon 3/316:40SFO - LGW

1 stop15h 05mTAP AIR PORTUGAL

Mon 10/321:30LGW - SFO

2 stops49h 10mTAP AIR PORTUGAL

Deal found 20/2£467

Mon 3/308:30SFO - STN

2 stops27h 40mMultiple Airlines

Mon 10/320:55STN - SFO

2 stops31h 56mMultiple Airlines

Deal found 21/2£510

Mon 3/300:40SFO - LHR

1 stop22h 25mDelta

Tue 11/311:40LHR - SFO

Nonstop11h 10mDelta

Deal found 20/2£528

One-way flights from San Francisco to London
Search for one-way flight options from San Francisco to London. Find affordable one-way fares based on user searches. Data last updated 21 February 2025.

Thu 10/410:15SFO - LHR

2 stops17h 50mMultiple Airlines

Deal found 20/2£242

Tue 13/520:00SFO - LHR

1 stop16h 05mIberia

Deal found 20/2£243

Tue 13/520:00SFO - LGW

1 stop16h 25mVueling

Deal found 20/2£244

Tue 11/310:15SFO - LGW

3 stops49h 05mMultiple Airlines

Deal found 20/2£245

Sun 23/306:00SFO - STN

3 stops45h 00mMultiple Airlines

Deal found 20/2£245

Mon 24/320:43SFO - LHR

1 stop17h 02mJetBlue

Deal found 20/2£254

Tue 11/310:15SFO - LTN

3 stops45h 40mMultiple Airlines

Deal found 20/2£254

Sat 1/316:35SFO - LHR

1 stop33h 35mAir Canada

Deal found 20/2£266

Sat 1/313:46SFO - LHR

1 stop13h 29mLufthansa

Deal found 19/2£268

Sun 22/614:45SFO - LGW

3 stops34h 40mWestJet

Deal found 21/2£269

Tue 1/416:20SFO - SEN

2 stops36h 35mMultiple Airlines

Deal found 20/2£271

Tue 4/320:40SFO - LHR

Nonstop10h 35mBritish Airways

Deal found 20/2£273

Find flights from San Francisco to London within your budget

Fly from

Fly to

Route

Depart

Return

Price

San FranciscoLondon

SFO - LGW

SFOLGW

San Francisco

Mon 3/3

16:40-15:45

1 stop15h 05m

London Gatwick

Mon 10/3

21:30-15:40

2 stops49h 10m

£467

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Sun 16/3

21:40-15:15

Nonstop10h 35m

London Heathrow

Thu 3/4

14:15-17:15

Nonstop11h 00m

£467

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Sun 9/3

17:40-10:55

Nonstop10h 15m

London Heathrow

Tue 25/3

11:40-15:50

Nonstop11h 10m

£470

San FranciscoLondon

SFO - STN

SFOSTN

San Francisco

Tue 1/4

08:20-20:35

2 stops28h 15m

London Stansted

Wed 9/4

06:00-21:45

2 stops23h 45m

£472

San FranciscoLondon

SFO - LGW

SFOLGW

San Francisco

Mon 10/3

22:59-10:35

1 stop28h 36m

London Gatwick

Thu 13/3

12:00-07:16

1 stop26h 16m

£475

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Mon 24/3

18:30-21:35

2 stops20h 05m

London Heathrow

Mon 31/3

21:05-16:30

2 stops27h 25m

£475

San FranciscoLondon

SFO - LGW

SFOLGW

San Francisco

Wed 12/3

20:25-17:50

1 stop14h 25m

London Gatwick

Mon 17/3

18:45-17:25

1 stop29h 40m

£480

San FranciscoLondon

SFO - LCY

SFOLCY

San Francisco

Tue 1/4

19:30-17:30

1 stop14h 00m

London City

Wed 9/4

09:25-16:10

1 stop14h 45m

£483

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Sat 8/3

16:35-10:10

1 stop33h 35m

London Heathrow

Fri 21/3

08:55-17:25

1 stop15h 30m

£483

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Thu 6/3

13:00-10:10

1 stop13h 10m

London Heathrow

Tue 11/3

12:05-17:25

1 stop36h 20m

£486

Flights are sorted by cheapest return flights first.

Deals found on 20/2

Showing 1-10 of 60 results

...

Best time to book a flight from San Francisco to London

Have a flexible travel schedule? Discover the best time to fly to London 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 London

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

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

The price you pay for your flight from San Francisco to London may vary depending on when you book. For the best chance of a lower fare, look to book 20 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, January is the cheapest month in which you can book a flight from San Francisco to London (average of £112). Flying from San Francisco to London in August is currently the most expensive (average of £163). 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 LON?

When flying from San Francisco to London, 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 13% versus a flight in the morning.

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

Travellers seeking maximum savings on their San Francisco to London flight should consider departing on Wednesday evenings when fares are most often at their lowest. Monday 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

The most flights from SFO to LON are scheduled on a Monday (27 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (21 on average).

Rainfall in London by month

In terms of precipitation, rainfall in London 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 when rainfall is around 40.0 mm.

Temperature in London by month

If weather is an important factor for your trip to London, 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 London

Read reviews from past customers who have flown Delta, KLM and Finnair from San Francisco to London. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very Good

8,213 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

8,213 reviews

Delta

8.0

Very Good

8,213 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

1,331 reviews

Delta

8.0

Very Good

8,213 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

1,273 reviews

Delta

8.0

Very Good

8,213 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

773 reviews

Delta

8.0

Very Good

8,213 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

1,568 reviews

Delta

8.0

Very Good

8,213 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?
Located just 11.8 mi from the city center, San Francisco is the airport most travelers will use when flying to London from San Francisco. Booking flights from San Francisco (SFO) to London should be relatively easy as there are 26 daily outbound flights to London from 10 different airlines.
What are the cheapest airlines flying from San Francisco to London round-trip?
Our cheapest airline available from San Francisco to London is TAP AIR PORTUGAL. Our recent data shows that you can find tickets from as low as £467 on this airline. Additional options worth looking into are Iberia and Virgin Atlantic, starting at £467 and £470 round-trip. TAP AIR PORTUGAL is currently priced 24% below the average price you’ll pay for this route.
What are the cheapest airlines to fly from San Francisco to London one-way?
For one-way options, check prices for Iberia. According to our data, you can fly for as low as £243. Users have also found prices from £244 and £254 on Vueling and JetBlue, respectively.
What are the most popular routes from San Francisco to London?
While some choose either San Francisco - London City or San Francisco - London Gatwick, San Francisco - London Heathrow is the most popular route from San Francisco to London.
What are the most reliable airlines from San Francisco to London?
Before booking your flight to London from San Francisco, check out the most reliable airlines to get you to your destination on time: Air Canada (85%), Austrian Airlines (85%), United Airlines( 85%).
What are the cheapest flights from San Francisco to London?
Looking at all options, your cheapest flight can be booked for £291. While the most popular route (San Francisco - London Heathrow) can be booked for £398 on average our data indicates £2,058 when flying from San Francisco to London.
Can I find deals for flights from San Francisco to London that include hotel bookings?
Yes. In addition to deals on San Francisco to London flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from San Francisco to London?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Francisco to London.
Can I find deals for business class flights from San Francisco to London?
Yes. Cheapflights offers flight deals from San Francisco to London 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?
Currently, January is the cheapest month in which you can book a flight from San Francisco to London (average of £112). Flying from San Francisco to London in August is currently the most expensive (average of £163). 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

Hounslow

Milton Keynes

Croydon

Gatwick

Slough

Luton

Ilford

Hayes

Eastbourne

Wembley

Southend-on-Sea

Ipswich

Winchester

Maidstone

Crawley

Southall

Watford

Dartford

Stansted

Browse thousands of different options on Cheapflights for your next trip

Top 10 airlines flying from San Francisco to London

Airline	Cheapest	Average	Flexibility	On-time
Finnair	Cheapest£388	Average£704	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
TAP AIR PORTUGAL	Cheapest£416	Average£432	FlexibilityNo cancel fee	On-timeN/A	Search TAP AIR PORTUGAL flights
Virgin Atlantic	Cheapest£449	Average£608	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
Iberia	Cheapest£455	Average£573	FlexibilityNo cancel fee	On-time77%	Search Iberia flights
British Airways	Cheapest£458	Average£599	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Air Canada	Cheapest£462	Average£725	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
KLM	Cheapest£470	Average£539	FlexibilityNo cancel fee	On-time75%	Search KLM flights
United Airlines	Cheapest£483	Average£743	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Lufthansa	Cheapest£489	Average£744	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
Delta	Cheapest£543	Average£647	FlexibilityNo cancel fee	On-timeN/A	Search Delta flights

Fly with Cheapflights

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

When you search for this flight from San Francisco to London, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

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

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to London from San Francisco.

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

Users can book flights with no change fees policies with our dedicated filters. Book flights from San Francisco to London flexibly with Cheapflights today.

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Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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Cheap flights from San Francisco to London from £242

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 10/4. 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 are usually found in October or September, booked 20 days in advance, depart on a Wednesday or Tuesday and return on a Tuesday

Cheap flight deals from San Francisco to London

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

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Find flight deals from San Francisco to London

Cheapest flights from San Francisco to LondonExplore the most affordable flight options available from San Francisco to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 February 2025.

Explore the most affordable flight options available from San Francisco to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 February 2025.

Find flights from San Francisco to London within your budget

Best time to book a flight from San Francisco to London

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

Travel insights for flights from San Francisco to London

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

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

Use this chart to determine the optimal time to book a return flight from San Francisco to London. Price data was last updated on 14 February 2025.

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

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

Find hourly flight availability from San Francisco to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 21 February 2025.

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

Use this chart to determine the cheapest time to fly return from San Francisco to London. Price data was last updated on 16 December 2024.

Weekly flight availability from San Francisco to London

Rainfall in London by month

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

Temperature in London by month

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

Reviews of airlines servicing London

Read reviews from past customers who have flown Delta, KLM and Finnair from San Francisco to London. 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 London. 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?

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

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

What are the most popular routes from San Francisco to London?

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

What are the cheapest flights from San Francisco to London?

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

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

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

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

Travelling to a place near San Francisco?

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for San Francisco to London

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

Top 10 airlines flying from San Francisco to London

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Cheapest flights from San Francisco to London
Explore the most affordable flight options available from San Francisco to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 February 2025.