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Cheap flights from San Francisco to London from £279

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from San Francisco to London departing on 16/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap return flights

Multiple Airlines Logo
23:45 - 06:30SFO-LHR
22h 45m1 stop
Multiple Airlines Logo
08:40 - 16:10LHR-SFO
15h 30m1 stop
£384Multiple Airlines
Find Deal
Mon, 29 Sep - Wed, 15 Oct
Scandinavian Airlines Logo
07:05 - 09:35SFO-LHR
18h 30m2 stops
Scandinavian Airlines Logo
06:40 - 16:10LHR-SFO
16h 30m1 stop
£388Scandinavian Airlines
Find Deal
Tue, 21 Oct - Tue, 28 Oct
Multiple Airlines Logo
16:35 - 13:20SFO-LHR
12h 45m1 stop
Multiple Airlines Logo
11:10 - 20:35LHR-SFO
16h 25m1 stop
£389Multiple Airlines
Find Deal
Sun, 12 Oct - Tue, 28 Oct
TAP AIR PORTUGAL Logo
16:35 - 17:30SFO-LHR
16h 55m1 stop
TAP AIR PORTUGAL Logo
06:00 - 14:30LHR-SFO
16h 30m1 stop
£394TAP AIR PORTUGAL
Find Deal
Wed, 5 Nov - Wed, 12 Nov
Air Canada Logo
11:40 - 09:35SFO-LHR
13h 55m1 stop
Air Canada Logo
06:50 - 19:51LHR-SFO
21h 01m2 stops
£396Air Canada
Find Deal
Sun, 28 Sep - Tue, 14 Oct
United Airlines Logo
16:05 - 10:25SFO-LHR
10h 20mdirect
United Airlines Logo
06:55 - 14:30LHR-SFO
15h 35m1 stop
£396United Airlines
Find Deal
Sun, 28 Sep - Tue, 14 Oct
United Airlines Logo
17:25 - 12:00SFO-LHR
10h 35mdirect
United Airlines Logo
09:00 - 16:30LHR-SFO
15h 30m1 stop
£410United Airlines
Find Deal
Fri, 14 Nov - Sun, 16 Nov
Virgin Atlantic Logo
16:05 - 10:25SFO-LHR
10h 20mdirect
Virgin Atlantic Logo
06:30 - 11:45LHR-SFO
13h 15m1 stop
£412Virgin Atlantic
Find Deal
Sun, 28 Sep - Tue, 14 Oct
Virgin Atlantic Logo
21:20 - 15:40SFO-LHR
10h 20mdirect
Virgin Atlantic Logo
06:30 - 11:45LHR-SFO
13h 15m1 stop
£414Virgin Atlantic
Find Deal
Sun, 28 Sep - Tue, 14 Oct
Air Canada Logo
11:40 - 09:35SFO-LHR
13h 55m1 stop
Air Canada Logo
09:30 - 19:51LHR-SFO
18h 21m1 stop
£415Air Canada
Find Deal
Sun, 28 Sep - Tue, 14 Oct

Air Canada flights from San Francisco to London Heathrow Airport

Our best Air Canada deals on San Francisco to London Heathrow Airport flight tickets
Air Canada
28 Sept
SFO11:40San Francisco
13h 55m
1 stop
LHR09:35London Heathrow
14 Oct
LHR06:50London Heathrow
21h 01m
2 stops
SFO19:51San Francisco
£396
Find similar
Air Canada
28 Sept
SFO11:40San Francisco
13h 55m
1 stop
LHR09:35London Heathrow
14 Oct
LHR09:30London Heathrow
18h 21m
1 stop
SFO19:51San Francisco
£415
Find similar
Air Canada
1 Oct
SFO11:40San Francisco
13h 55m
1 stop
LHR09:35London Heathrow
7 Oct
LHR14:05London Heathrow
29h 48m
2 stops
SFO11:53San Francisco
£421
Find similar

Scandinavian Airlines flights from San Francisco to London Heathrow Airport

Our best Scandinavian Airlines deals on San Francisco to London Heathrow Airport flight tickets
Scandinavian Airlines
21 Oct
SFO07:05San Francisco
18h 30m
2 stops
LHR09:35London Heathrow
28 Oct
LHR06:40London Heathrow
16h 30m
1 stop
SFO16:10San Francisco
£388
Find similar
Scandinavian Airlines
21 Oct
SFO07:05San Francisco
18h 30m
2 stops
LHR09:35London Heathrow
30 Oct
LHR07:05London Heathrow
19h 20m
2 stops
SFO19:25San Francisco
£390
Find similar
Scandinavian Airlines
30 Oct
SFO21:30San Francisco
38h 00m
2 stops
LHR18:30London Heathrow
2 Nov
LHR17:00London Heathrow
29h 35m
1 stop
SFO14:35San Francisco
£391
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momondo Fare Finder

 
Customise your flight search to find flights from San Francisco to London Heathrow Airport that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 279,928 searches. Data last updated 18 September 2025.
Use the filters below to find and compare flights from San Francisco to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Mon 29/9

23:45-06:30

1 stop22h 45m

London Heathrow

Wed 15/10

08:40-16:10

1 stop15h 30m

£384

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Tue 21/10

07:05-09:35

2 stops18h 30m

London Heathrow

Tue 28/10

06:40-16:10

1 stop16h 30m

£388

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Sun 12/10

16:35-13:20

1 stop12h 45m

London Heathrow

Tue 28/10

11:10-20:35

1 stop16h 25m

£389

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Wed 5/11

16:35-17:30

1 stop16h 55m

London Heathrow

Wed 12/11

06:00-14:30

1 stop16h 30m

£394

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Sun 28/9

11:40-09:35

1 stop13h 55m

London Heathrow

Tue 14/10

06:50-19:51

2 stops21h 01m

£396

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Sun 28/9

16:05-10:25

Nonstop10h 20m

London Heathrow

Tue 14/10

06:55-14:30

1 stop15h 35m

£396

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Fri 14/11

17:25-12:00

Nonstop10h 35m

London Heathrow

Sun 16/11

09:00-16:30

1 stop15h 30m

£410

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Sun 28/9

16:05-10:25

Nonstop10h 20m

London Heathrow

Tue 14/10

06:30-11:45

1 stop13h 15m

£412

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Sun 28/9

21:20-15:40

Nonstop10h 20m

London Heathrow

Tue 14/10

06:30-11:45

1 stop13h 15m

£414

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Sun 28/9

11:40-09:35

1 stop13h 55m

London Heathrow

Tue 14/10

09:30-19:51

1 stop18h 21m

£415

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from San Francisco to London Heathrow Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to London Heathrow Airport?

In general, October is the cheapest month to fly from San Francisco to London Heathrow Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £476. The month of February is another great option to travel to London Heathrow Airport, with average flight prices from San Francisco averaging around £491.

What is the cheapest day to depart on your flight to London Heathrow Airport?

On average, the least expensive day to fly to London Heathrow Airport from San Francisco is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as £487. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Thursday as prices are generally higher than usual. According to our data, the average ticket price to London Heathrow Airport on Thursday is £678.

What is the cheapest time of day to depart on your flight to London Heathrow Airport?

According to our data, the cheapest time of day to fly to London Heathrow Airport is in the evening. momondo users have found flights departing from San Francisco to London Heathrow Airport in the evening for as low as £533. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying at midday when prices are £786 on average. Flights to London Heathrow Airport from San Francisco at midday are generally more expensive because this time of day is more convenient for travellers’ schedules.

What is the cheapest San Francisco to London Heathrow flight route?

Fly from San Francisco to London Heathrow for the best San Francisco - London Heathrow flight prices

How far in advance should I book a flight to London Heathrow Airport?

You are more likely to see cheaper flights to London Heathrow Airport from San Francisco when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around £562 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London Heathrow Airport from San Francisco for as low as £517 on momondo.

What cabin class options are available on San Francisco to London Heathrow flights?

There are 4 cabin classes available to choose from on San Francisco to London Heathrow flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have San Francisco to London Heathrow Airport flight prices changed over time?

As of September 2025, prices for San Francisco to London Heathrow Airport flights are approximately 56% more expensive when compared to flights at the same time last year.

When to book flights from San Francisco to London Heathrow Airport

Are you open to changing your travel dates? Check out the ideal times to fly from San Francisco to London Heathrow Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap San Francisco to London Heathrow Airport (SFO to LHR) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from San Francisco to London Heathrow Airport

Best price found

£298

Fastest flight time

10h 10m

Direct flights

Every day
The best one-way flight to London Heathrow Airport from San Francisco in the past 72 hours is £298. The best return flight deal from San Francisco to London Heathrow Airport found on momondo in the last 72 hours is £466.
The fastest flight from San Francisco to London Heathrow Airport takes 10h 10m
Direct flights go from San Francisco to London Heathrow Airport every day.
Search flight deals

  • How far is San Francisco to London Heathrow by plane?

    The distance between San Francisco and London Heathrow is about 5341.3 mi. Typically, this will take 10h 20m by plane in normal conditions.

  • When did momondo last update prices for flights from San Francisco Airport to London Heathrow Airport?

    Prices for flights from San Francisco Airport to London Heathrow Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from San Francisco Airport to London Heathrow Airport?

  • How old do you have to be to fly from San Francisco Airport to London Heathrow Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from San Francisco Airport to London Heathrow Airport.

  • What documentation or ID do you need to fly to London Heathrow Airport?

    The travel and health documents required for your trip to London Heathrow Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at London Heathrow Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular plane model from San Francisco to London Heathrow Airport?

  • What is the most popular airline from San Francisco to London Heathrow Airport?

Best airlines flying from San Francisco to London Heathrow Airport

Compare and see reviews for airlines that fly from San Francisco to London Heathrow Airport with momondo
Airline
Rating
Free Cancellation
Price
Scandinavian AirlinesPriceFrom £350Free CancellationRating
7.4
1,486 reviews
Search Scandinavian Airlines flights
Virgin AtlanticPriceFrom £362Free CancellationRating
7.4
664 reviews
Search Virgin Atlantic flights
KLMPriceFrom £364Free CancellationRating
7.8
1,386 reviews
Search KLM flights
British AirwaysPriceFrom £380Free CancellationRating
6.7
7,367 reviews
Search British Airways flights
TAP AIR PORTUGALPriceFrom £385Free CancellationRating
7.1
1,977 reviews
Search TAP AIR PORTUGAL flights
United AirlinesPriceFrom £410Free CancellationRating
7.4
8,926 reviews
Search United Airlines flights
IberiaPriceFrom £418Free CancellationRating
7.0
2,925 reviews
Search Iberia flights
LufthansaPriceFrom £423Free CancellationRating
6.8
7,409 reviews
Search Lufthansa flights
Air CanadaPriceFrom £427Free CancellationRating
7.1
10,000 reviews
Search Air Canada flights

  • KLM Flights From San Francisco to London Heathrow Airport

    The lowest priced KLM flight from San Francisco to London Heathrow Airport from the last 72 hours was £496. Generally, KLM has 14 flights on this route every week with an average price of £635. KLM is rated 7.8/10 by our users.

  • Virgin Atlantic Flights From San Francisco to London Heathrow Airport

    Across 664 Virgin Atlantic reviews on momondo, the average score is 7.4/10. Virgin Atlantic flies from San Francisco to London Heathrow Airport about 14 times each week, with ticket deals ranging from £495 to £733. Price data is based on momondo searches in the last 72 hours.

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
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Worthing
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Chelmsford

Why use momondo?

Why should I use momondo to find a flight deal from San Francisco to London?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from San Francisco to London . Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from San Francisco to London with flexible booking policies on momondo?

Flights from San Francisco to London with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from San Francisco to London?

momondo provides multiple filters to help you find the best flight to London from San Francisco. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from San Francisco to London right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of San Francisco to London flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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