Cheap flights from San Francisco to London from $316

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 9/26. 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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Scandinavian Airlines Logo
7:40 pm - 9:40 pmSFO-LHR
18h 00m1 stop
Scandinavian Airlines Logo
7:30 pm - 4:10 pmLHR-SFO
27h 40m1 stop
$518Scandinavian Airlines
Find Deal
Mon, Oct 20 - Mon, Oct 27
Scandinavian Airlines Logo
7:40 pm - 9:35 amSFO-LHR
29h 55m2 stops
Scandinavian Airlines Logo
6:40 am - 2:35 pmLHR-SFO
15h 55m1 stop
$520Scandinavian Airlines
Find Deal
Thu, Oct 23 - Mon, Nov 3
Scandinavian Airlines Logo
7:40 pm - 5:40 pmSFO-LHR
14h 00m1 stop
Scandinavian Airlines Logo
7:50 pm - 7:25 pmLHR-SFO
30h 35m2 stops
$521Scandinavian Airlines
Find Deal
Thu, Oct 23 - Wed, Oct 29
Scandinavian Airlines Logo
7:40 pm - 9:35 pmSFO-LHR
17h 55m2 stops
Scandinavian Airlines Logo
9:05 pm - 4:10 pmLHR-SFO
26h 05m2 stops
$523Scandinavian Airlines
Find Deal
Mon, Oct 13 - Tue, Oct 28
TAP AIR PORTUGAL Logo
6:45 pm - 9:45 amSFO-LGW
31h 00m2 stops
TAP AIR PORTUGAL Logo
4:25 pm - 2:30 pmLGW-SFO
30h 05m1 stop
$577TAP AIR PORTUGAL
Find Deal
Tue, Sep 16 - Wed, Oct 22
TAP AIR PORTUGAL Logo
6:45 pm - 9:45 amSFO-LGW
31h 00m2 stops
TAP AIR PORTUGAL Logo
4:25 pm - 2:35 pmLGW-SFO
30h 10m1 stop
$578TAP AIR PORTUGAL
Find Deal
Tue, Sep 16 - Tue, Sep 23
American Airlines Logo
9:16 am - 10:40 amSFO-LGW
17h 24m2 stops
American Airlines Logo
3:05 pm - 7:53 amLGW-SFO
24h 48m2 stops
$614American Airlines
Find Deal
Wed, Oct 8 - Wed, Oct 22
SWISS Logo
7:30 pm - 5:30 pmSFO-LCY
14h 00m1 stop
SWISS Logo
9:15 am - 5:30 pmLCY-SFO
15h 15m1 stop
$647SWISS
Find Deal
Tue, Oct 14 - Tue, Oct 28
SWISS Logo
7:30 pm - 5:15 pmSFO-LCY
13h 45m1 stop
SWISS Logo
9:25 am - 4:10 pmLCY-SFO
14h 45m1 stop
$648SWISS
Find Deal
Wed, Oct 15 - Tue, Oct 21
Lufthansa Logo
2:40 pm - 6:35 pmSFO-LCY
19h 55m1 stop
Lufthansa Logo
7:10 pm - 12:40 pmLCY-SFO
25h 30m1 stop
$711Lufthansa
Find Deal
Thu, Oct 16 - Mon, Oct 20

Scandinavian Airlines flights from San Francisco to London

Our best Scandinavian Airlines deals on San Francisco to London flight tickets
Scandinavian Airlines
Oct 20
SFO7:40 pmSan Francisco
18h 00m
1 stop
LHR9:40 pmLondon Heathrow
Oct 27
LHR7:30 pmLondon Heathrow
27h 40m
1 stop
SFO4:10 pmSan Francisco
Scandinavian Airlines
Oct 23
SFO7:40 pmSan Francisco
29h 55m
2 stops
LHR9:35 amLondon Heathrow
Nov 3
LHR6:40 amLondon Heathrow
15h 55m
1 stop
SFO2:35 pmSan Francisco
Scandinavian Airlines
Oct 23
SFO7:40 pmSan Francisco
14h 00m
1 stop
LHR5:40 pmLondon Heathrow
Oct 29
LHR7:50 pmLondon Heathrow
30h 35m
2 stops
SFO7:25 pmSan Francisco

Virgin Atlantic flights from San Francisco to London

Our best Virgin Atlantic deals on San Francisco to London flight tickets
Virgin Atlantic
Sep 1
SFO9:20 pmSan Francisco
10h 20m
LHR3:40 pmLondon Heathrow
Sep 16
LHR4:25 pmLondon Heathrow
11h 05m
SFO7:30 pmSan Francisco
Virgin Atlantic
Sep 1
SFO9:20 pmSan Francisco
10h 20m
LHR3:40 pmLondon Heathrow
Sep 16
LHR4:25 pmLondon Heathrow
11h 05m
SFO7:30 pmSan Francisco
Virgin Atlantic
Sep 1
SFO9:20 pmSan Francisco
10h 20m
LHR3:40 pmLondon Heathrow
Sep 16
LHR5:25 pmLondon Heathrow
14h 04m
1 stop
SFO11:29 pmSan Francisco

momondo Fare Finder

 
Customize your flight search to find flights from San Francisco to London 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 832,500 searches. Data last updated August 28, 2025.
Use the filters below to find and compare flights from San Francisco to London that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Mon 10/20

7:40 pm-9:40 pm

1 stop18h 00m

London Heathrow

Mon 10/27

7:30 pm-4:10 pm

1 stop27h 40m

$518

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Thu 10/23

7:40 pm-9:35 am

2 stops29h 55m

London Heathrow

Mon 11/3

6:40 am-2:35 pm

1 stop15h 55m

$520

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Thu 10/23

7:40 pm-5:40 pm

1 stop14h 00m

London Heathrow

Wed 10/29

7:50 pm-7:25 pm

2 stops30h 35m

$521

San FranciscoLondon

SFO - LHR

SFOLHR

San Francisco

Mon 10/13

7:40 pm-9:35 pm

2 stops17h 55m

London Heathrow

Tue 10/28

9:05 pm-4:10 pm

2 stops26h 05m

$523

San FranciscoLondon

SFO - LGW

SFOLGW

San Francisco

Tue 9/16

6:45 pm-9:45 am

2 stops31h 00m

London Gatwick

Wed 10/22

4:25 pm-2:30 pm

1 stop30h 05m

$577

San FranciscoLondon

SFO - LGW

SFOLGW

San Francisco

Tue 9/16

6:45 pm-9:45 am

2 stops31h 00m

London Gatwick

Tue 9/23

4:25 pm-2:35 pm

1 stop30h 10m

$578

San FranciscoLondon

SFO - LGW

SFOLGW

San Francisco

Wed 10/8

9:16 am-10:40 am

2 stops17h 24m

London Gatwick

Wed 10/22

3:05 pm-7:53 am

2 stops24h 48m

$614

San FranciscoLondon

SFO - LCY

SFOLCY

San Francisco

Tue 10/14

7:30 pm-5:30 pm

1 stop14h 00m

London City

Tue 10/28

9:15 am-5:30 pm

1 stop15h 15m

$647

San FranciscoLondon

SFO - LCY

SFOLCY

San Francisco

Wed 10/15

7:30 pm-5:15 pm

1 stop13h 45m

London City

Tue 10/21

9:25 am-4:10 pm

1 stop14h 45m

$648

San FranciscoLondon

SFO - LCY

SFOLCY

San Francisco

Thu 10/16

2:40 pm-6:35 pm

1 stop19h 55m

London City

Mon 10/20

7:10 pm-12:40 pm

1 stop25h 30m

$711

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to London from

How to get the cheapest flight ticket from San Francisco to London

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?

The cheapest month to fly to London from San Francisco is in October. Flight prices, which tend to average around $646, are often lower during this time because this is during the off-season. The month of September is another great option to travel to London, with average flight prices from San Francisco averaging around $660.

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

The cheapest day to depart from San Francisco to London is on a Wednesday. Travelers who choose to depart for London on a Wednesday will often find tickets for as low as $807. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $947. These prices are subject to change though, so be sure to set up a Price Alert for flights to London.

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

Flying to London from San Francisco in the morning is the least expensive time of day to depart. momondo users have found prices as low as $851 when looking at flights departing in the morning. Flights to London are more costly at noon, with an average ticket price of $977. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.

What is the cheapest San Francisco to London flight route?

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

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

You are more likely to see cheaper flights to London from San Francisco when booking weeks ahead of your departure date. In general, you can expect to find flights to London for around $767 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from San Francisco for as low as $698 on momondo.

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

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

Can stopping save me money on San Francisco to London flights?

You could potentially save up to 46% on your flight if you consider stops on a San Francisco to London flight.

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

As of August 2025, prices for San Francisco to London flights are approximately 41% more expensive when compared to flights at the same time last year.

When to book flights from San Francisco to London

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

Cheap San Francisco to London (SFO to LON) flight deals and tips

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

Best Price Found

$384

Fastest flight time

10h 10m

Direct flights

Every day

Airports in London

1 airport
The best one-way flight to London from San Francisco in the past 72 hours is $384. The best round-trip flight deal from San Francisco to London found on momondo in the last 72 hours is $610.
The fastest flight from San Francisco to London takes 10h 10m
Direct flights go from San Francisco to London every day.
There is 1 airport near London: London Heathrow (LHR)
  • How far is San Francisco to London by plane?

    London is 5349.7 mi away from San Francisco. In terms of flight time, this usually takes a little over 13h 35m.

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

    Prices for flights from San Francisco Airport to London refresh daily.

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

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from San Francisco Airport to London.

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

    The travel and health documents required for your trip to London 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. 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?

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

Best airlines flying from San Francisco to London

Compare and see reviews for airlines that fly from San Francisco to London with momondo
Airline
Rating
Free Cancellation
Price
JetBluePriceFrom $151Free CancellationRating
7.2
2,920 reviews
Search JetBlue flights
Scandinavian AirlinesPriceFrom $335Free CancellationRating
7.4
1,481 reviews
Search Scandinavian Airlines flights
TAP AIR PORTUGALPriceFrom $433Free CancellationRating
7.1
1,963 reviews
Search TAP AIR PORTUGAL flights
British AirwaysPriceFrom $514Free CancellationRating
6.7
7,316 reviews
Search British Airways flights
SWISSPriceFrom $541Free CancellationRating
7.6
1,712 reviews
Search SWISS flights
DeltaPriceFrom $568Free CancellationRating
7.9
7,977 reviews
Search Delta flights
United AirlinesPriceFrom $570Free CancellationRating
7.4
8,944 reviews
Search United Airlines flights
IberiaPriceFrom $572Free CancellationRating
7.0
2,892 reviews
Search Iberia flights
FinnairPriceFrom $573Free CancellationRating
7.6
1,321 reviews
Search Finnair flights
American AirlinesPriceFrom $573Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
  • Delta Flights From San Francisco to London

    The lowest priced Delta flight from San Francisco to London from the last 72 hours was $568. Generally, Delta has 14 flights on this route every week with an average price of $810. Delta is rated 7.9/10 by our users.

  • KLM Flights From San Francisco to London

    KLM (7.8/10 from 1,382 reviews) operates around 14 flights from San Francisco to London in any given week. The average KLM airfare for this route is around $975, with deals from around $664 rare but found on momondo. Referenced prices are for round-trip San Francisco to London flight searches in the last 72 hours.

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Hounslow
Gatwick
Luton
Dover
Slough
Milton Keynes
Guildford
Dartford
Crawley
Stansted
Hayes
Chelmsford
Brentwood
Ilford
Folkestone
Colchester
Watford
Canterbury
Richmond
Wembley

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to London from San Francisco.

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

All flight searches from San Francisco to London on momondo can be filtered to show those which offer flexible booking policies.

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?

Yes momondo offers price alerts on flights to London from San Francisco. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your London trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

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1 adult
Tue 9/2
Tue 9/9

Find better results for your trip to the United Kingdom

Fly into one of these airports located in London

Airports listed have a maximum distance of 35.6 mi from London