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

Our cheapest airline available from San Francisco to London is ITA Airways. Our recent data shows that you can find tickets from as low as £489 on this airline. Additional options worth looking into are Iberia and Virgin Atlantic, starting at £489 and £490 round-trip. ITA Airways 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 WestJet. According to our data, you can fly for as low as £218. Users have also found prices from £275 and £278 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 £322. While the most popular route (San Francisco - London Heathrow) can be booked for £411 on average our data indicates £2,540 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%), SWISS( 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?

Wednesday 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 14% 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 £601.

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 £419.

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 30 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.

£218+ 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 Tuesday or Wednesday and return on a Tuesday

Cheap flight deals from San Francisco to London

Round-trip from	£489
One-way from	£218
Popular in	June
Cheapest in	October
Average price	£564

ITA Airways
4/3-12/3
2 total stops
45h 30m total
San Francisco to London

Search Deals

30/1
2 total stops
52h 50m total
San Francisco to London

Search Deals

High demand for flights, 21% potential price rise

Search Deals

Best time to find cheap flights, 4% potential price drop

Search Deals

Average for round-trip flights in January 2025

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 17 January 2025.

Wed 29/110:40SFO - LHR

1 stop13h 55mIberia

Wed 5/211:45LHR - SFO

Nonstop11h 15mIberia

Deal found 16/1£489

Thu 6/315:05SFO - LCY

1 stop17h 05mITA Airways

Wed 12/316:40LCY - SFO

1 stop28h 25mITA Airways

Deal found 16/1£490

Sun 2/317:30SFO - STN

2 stops21h 25mMultiple Airlines

Sun 9/312:20STN - SFO

2 stops35h 20mMultiple Airlines

Deal found 16/1£490

Sun 9/213:30SFO - LHR

1 stop13h 40mVirgin Atlantic

Tue 25/206:30LHR - SFO

1 stop13h 20mVirgin Atlantic

Deal found 17/1£490

Mon 3/316:40SFO - LGW

1 stop33h 10mTAP AIR PORTUGAL

Thu 6/315:55LGW - SFO

1 stop30h 20mTAP AIR PORTUGAL

Deal found 15/1£491

Wed 7/519:40SFO - LHR

1 stop36h 20mScandinavian Airlines

Sun 18/518:40LHR - SFO

1 stop29h 50mScandinavian Airlines

Deal found 17/1£492

Sun 19/110:54SFO - LGW

1 stop15h 41mMultiple Airlines

Sun 26/112:00LGW - SFO

1 stop27h 16mMultiple Airlines

Deal found 16/1£493

Sun 9/214:54SFO - LHR

2 stops37h 56mMultiple Airlines

Tue 25/215:15LHR - SFO

1 stop36h 55mMultiple Airlines

Deal found 16/1£495

Sun 9/217:30SFO - LHR

Nonstop10h 30mAmerican Airlines

Tue 25/208:25LHR - SFO

1 stop15h 05mAmerican Airlines

Deal found 17/1£503

Sun 9/217:30SFO - LHR

Nonstop10h 30mFinnair

Tue 25/215:20LHR - SFO

Nonstop11h 25mFinnair

Deal found 17/1£504

Tue 11/213:40SFO - LHR

1 stop12h 20mKLM

Wed 26/220:25LHR - SFO

1 stop23h 25mKLM

Deal found 16/1£505

Wed 19/317:40SFO - LHR

Nonstop10h 15mDelta

Wed 2/406:30LHR - SFO

1 stop13h 15mDelta

Deal found 16/1£509

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 17 January 2025.

Tue 4/315:05SFO - LCY

1 stop17h 05mITA Airways

Wed 12/316:40LCY - SFO

1 stop28h 25mITA Airways

Deal found 17/1£489

Wed 29/110:40SFO - LHR

1 stop13h 55mIberia

Wed 5/211:45LHR - SFO

Nonstop11h 15mIberia

Deal found 16/1£489

Sun 2/317:30SFO - STN

2 stops21h 25mMultiple Airlines

Sun 9/312:20STN - SFO

2 stops35h 20mMultiple Airlines

Deal found 16/1£490

Sun 9/213:30SFO - LHR

1 stop13h 40mVirgin Atlantic

Tue 25/206:30LHR - SFO

1 stop13h 20mVirgin Atlantic

Deal found 17/1£490

Mon 3/316:40SFO - LGW

1 stop33h 10mTAP AIR PORTUGAL

Thu 6/315:55LGW - SFO

1 stop30h 20mTAP AIR PORTUGAL

Deal found 15/1£491

Wed 7/519:40SFO - LHR

1 stop36h 20mScandinavian Airlines

Sun 18/518:40LHR - SFO

1 stop29h 50mScandinavian Airlines

Deal found 17/1£492

Wed 12/216:40SFO - LHR

Nonstop10h 15mDelta

Thu 20/206:30LHR - SFO

1 stop13h 20mDelta

Deal found 16/1£502

Sun 9/217:30SFO - LHR

Nonstop10h 30mAmerican Airlines

Tue 25/208:25LHR - SFO

1 stop15h 05mAmerican Airlines

Deal found 17/1£503

Sun 9/217:30SFO - LHR

Nonstop10h 30mFinnair

Tue 25/215:20LHR - SFO

Nonstop11h 25mFinnair

Deal found 17/1£504

Tue 11/209:00SFO - LHR

1 stop14h 55mKLM

Tue 25/206:30LHR - SFO

1 stop13h 20mKLM

Deal found 16/1£505

Tue 25/217:25SFO - LHR

Nonstop10h 35mUnited Airlines

Wed 19/308:55LHR - SFO

1 stop15h 30mUnited Airlines

Deal found 16/1£523

Mon 10/219:25SFO - LGW

1 stop14h 25mSWISS

Wed 26/218:45LGW - SFO

1 stop29h 40mSWISS

Deal found 16/1£533

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 17 January 2025.

Tue 4/320:40SFO - LHR

Nonstop10h 35mBritish Airways

Wed 12/315:20LHR - SFO

Nonstop11h 25mBritish Airways

Deal found 17/1£492

Tue 6/516:35SFO - LHR

Nonstop10h 25mIberia

Tue 20/514:15LHR - SFO

Nonstop11h 00mIberia

Deal found 15/1£495

Sun 9/216:40SFO - LHR

Nonstop10h 15mVirgin Atlantic

Tue 25/211:40LHR - SFO

Nonstop11h 05mVirgin Atlantic

Deal found 16/1£499

Sun 9/217:30SFO - LHR

Nonstop10h 30mFinnair

Tue 25/215:20LHR - SFO

Nonstop11h 25mFinnair

Deal found 17/1£504

Sun 9/216:40SFO - LHR

Nonstop10h 15mDelta

Thu 20/211:40LHR - SFO

Nonstop11h 05mDelta

Deal found 15/1£511

Tue 1/419:40SFO - LHR

Nonstop10h 30mUnited Airlines

Fri 11/412:20LHR - SFO

Nonstop11h 05mUnited Airlines

Deal found 16/1£538

Sun 9/212:50SFO - LHR

Nonstop10h 35mAustrian Airlines

Tue 25/210:05LHR - SFO

Nonstop11h 10mAustrian Airlines

Deal found 17/1£541

Sun 9/217:25SFO - LHR

Nonstop10h 35mAir Canada

Tue 25/213:45LHR - SFO

Nonstop11h 10mAir Canada

Deal found 16/1£554

Fri 31/112:50SFO - LHR

Nonstop10h 35mLufthansa

Tue 4/213:45LHR - SFO

Nonstop11h 10mLufthansa

Deal found 15/1£580

Thu 6/320:40SFO - LHR

Nonstop10h 35mAmerican Airlines

Sun 16/315:20LHR - SFO

Nonstop11h 25mAmerican Airlines

Deal found 15/1£584

Last-minute flights from San Francisco to London
Discover last-minute flight deals from San Francisco to London. Data last updated 17 January 2025 and is based on user searches.

Sun 19/110:54SFO - LGW

1 stop15h 41mMultiple Airlines

Sun 26/112:00LGW - SFO

1 stop27h 16mMultiple Airlines

Deal found 16/1£493

Wed 22/108:00SFO - LHR

1 stop15h 20mIberia

Tue 11/211:45LHR - SFO

Nonstop11h 15mIberia

Deal found 15/1£489

Wed 22/116:40SFO - LHR

Nonstop10h 15mVirgin Atlantic

Thu 30/106:30LHR - SFO

1 stop13h 20mVirgin Atlantic

Deal found 16/1£501

Wed 22/116:35SFO - LGW

2 stops33h 25mTAP AIR PORTUGAL

Tue 28/121:20LGW - SFO

2 stops25h 20mTAP AIR PORTUGAL

Deal found 16/1£507

Wed 22/116:35SFO - LHR

1 stop16h 55mTAP AIR PORTUGAL

Sat 25/106:00LHR - SFO

1 stop16h 55mTAP AIR PORTUGAL

Deal found 16/1£522

Wed 22/112:50SFO - LHR

Nonstop10h 35mUnited Airlines

Wed 12/213:45LHR - SFO

1 stop34h 40mUnited Airlines

Deal found 16/1£523

Wed 22/119:25SFO - LCY

1 stop29h 20mSWISS

Tue 28/109:15LCY - SFO

1 stop15h 10mSWISS

Deal found 16/1£561

Thu 23/117:30SFO - LHR

1 stop16h 10mScandinavian Airlines

Sun 26/119:30LHR - SFO

1 stop28h 10mScandinavian Airlines

Deal found 16/1£507

Thu 23/120:35SFO - LHR

1 stop14h 00mLufthansa

Tue 28/107:40LHR - SFO

1 stop19h 05mLufthansa

Deal found 16/1£566

Sat 25/122:29SFO - LGW

1 stop28h 06mMultiple Airlines

Thu 30/112:00LGW - SFO

1 stop27h 16mMultiple Airlines

Deal found 16/1£497

Sun 26/100:40SFO - LHR

1 stop22h 25mDelta

Tue 4/206:30LHR - SFO

1 stop13h 20mDelta

Deal found 16/1£505

Mon 27/107:00SFO - LHR

2 stops18h 20mMultiple Airlines

Tue 4/208:55LHR - SFO

1 stop15h 30mMultiple Airlines

Deal found 16/1£513

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 17 January 2025.

Thu 30/121:10SFO - LGW

2 stops52h 50mMultiple Airlines

Deal found 17/1£218

Sun 16/211:02SFO - LHR

2 stops41h 48mMultiple Airlines

Deal found 16/1£218

Sun 9/213:55SFO - LHR

1 stop14h 55mWestJet

Deal found 16/1£218

Thu 30/119:55SFO - STN

2 stops51h 05mMultiple Airlines

Deal found 16/1£258

Sun 9/222:42SFO - LTN

3 stops59h 08mMultiple Airlines

Deal found 16/1£259

Tue 22/420:00SFO - LGW

1 stop18h 40mVueling

Deal found 16/1£275

Sun 16/206:00SFO - LHR

1 stop15h 55mJetBlue

Deal found 17/1£278

Tue 22/416:20SFO - LHR

1 stop17h 25mTAP AIR PORTUGAL

Deal found 16/1£280

Sun 30/316:20SFO - LGW

1 stop33h 25mTAP AIR PORTUGAL

Deal found 16/1£288

Mon 17/216:40SFO - LHR

Nonstop10h 15mVirgin Atlantic

Deal found 17/1£290

Mon 17/219:55SFO - SEN

2 stops32h 10mMultiple Airlines

Deal found 17/1£292

Tue 13/520:00SFO - LHR

1 stop16h 05mIberia

Deal found 17/1£298

Find flights from San Francisco to London within your budget

Fly from

Fly to

Route

Depart

Return

Price

San FranciscoLondon

SFO - LCY

SFOLCY

San Francisco

Tue 4/3

15:05-16:10

1 stop17h 05m

London City

Wed 12/3

16:40-14:05

1 stop28h 25m

£489

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Wed 29/1

10:40-08:35

1 stop13h 55m

London Heathrow

Wed 5/2

11:45-15:00

Nonstop11h 15m

£489

San FranciscoLondon

SFO - STN

SFOSTN

San Francisco

Sun 2/3

17:30-22:55

2 stops21h 25m

London Stansted

Sun 9/3

12:20-16:40

2 stops35h 20m

£490

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Sun 9/2

13:30-11:10

1 stop13h 40m

London Heathrow

Tue 25/2

06:30-11:50

1 stop13h 20m

£490

San FranciscoLondon

SFO - LGW

SFOLGW

San Francisco

Mon 3/3

16:40-09:50

1 stop33h 10m

London Gatwick

Thu 6/3

15:55-14:15

1 stop30h 20m

£491

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Wed 7/5

19:40-16:00

1 stop36h 20m

London Heathrow

Sun 18/5

18:40-16:30

1 stop29h 50m

£492

San FranciscoLondon

SFO - LGW

SFOLGW

San Francisco

Tue 4/3

00:16-08:05

2 stops23h 49m

London Gatwick

Thu 13/3

19:05-21:10

1 stop33h 05m

£495

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Sun 9/2

14:54-12:50

2 stops37h 56m

London Heathrow

Tue 25/2

15:15-20:10

1 stop36h 55m

£495

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Wed 12/2

16:40-10:55

Nonstop10h 15m

London Heathrow

Wed 19/2

11:45-11:50

1 stop32h 05m

£502

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Sun 9/2

17:30-12:00

Nonstop10h 30m

London Heathrow

Tue 25/2

08:25-15:30

1 stop15h 05m

£503

Flights are sorted by cheapest return flights first.

Deals found on 17/1

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 £161). 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 at midday, which can drop the price by up to 14% 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 at midday when fares are most often at their lowest. Tuesday 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 (31 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (25 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 Iberia, Scandinavian Airlines and Delta 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

8,513 reviews

Check prices

Reviews

1 / 10

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

Delta

8.0

Very Good

8,513 reviews

Delta

8.0

Very Good

8,513 reviews

Check prices

Reviews

1 / 10

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

KLM

7.8

Good

1,339 reviews

Delta

8.0

Very Good

8,513 reviews

Check prices

Reviews

1 / 10

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

Finnair

7.6

Good

1,285 reviews

Delta

8.0

Very Good

8,513 reviews

Check prices

Reviews

1 / 10

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

SWISS

7.5

Good

1,598 reviews

Delta

8.0

Very Good

8,513 reviews

Check prices

Reviews

1 / 10

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

Virgin Atlantic

7.5

Good

664 reviews

Delta

8.0

Very Good

8,513 reviews

Check prices

Reviews

1 / 10

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 30 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 ITA Airways. Our recent data shows that you can find tickets from as low as £489 on this airline. Additional options worth looking into are Iberia and Virgin Atlantic, starting at £489 and £490 round-trip. ITA Airways 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 WestJet. According to our data, you can fly for as low as £218. Users have also found prices from £275 and £278 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%), SWISS( 85%).
What are the cheapest flights from San Francisco to London?
Looking at all options, your cheapest flight can be booked for £322. While the most popular route (San Francisco - London Heathrow) can be booked for £411 on average our data indicates £2,540 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 £161). 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

Gatwick

Milton Keynes

Croydon

Luton

Slough

Ilford

Hayes

Eastbourne

Maidstone

Winchester

Southend-on-Sea

Wembley

Ipswich

Watford

Crawley

Southall

Stansted

High Wycombe

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£401	Average£727	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
TAP AIR PORTUGAL	Cheapest£447	Average£459	FlexibilityNo cancel fee	On-timeN/A	Search TAP AIR PORTUGAL flights
Virgin Atlantic	Cheapest£464	Average£625	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
Iberia	Cheapest£470	Average£617	FlexibilityNo cancel fee	On-time77%	Search Iberia flights
British Airways	Cheapest£473	Average£619	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Air Canada	Cheapest£477	Average£733	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
KLM	Cheapest£486	Average£604	FlexibilityNo cancel fee	On-time75%	Search KLM flights
United Airlines	Cheapest£499	Average£791	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Lufthansa	Cheapest£505	Average£768	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
Delta	Cheapest£561	Average£665	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.

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

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!

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

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 from £218

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 30/1. 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 Tuesday or Wednesday 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

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 17 January 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 17 January 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 10 January 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 17 January 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 Iberia, Scandinavian Airlines and Delta 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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

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

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

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

100% Free

Book with Flexibility

Travel Smart

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 17 January 2025.