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Cheap flights from San Francisco to London from £133

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 4/8. 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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0 bags

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Cheap return flights

TAP AIR PORTUGAL Logo
16:20 - 22:55SFO-LHR
22h 35m1 stop
TAP AIR PORTUGAL Logo
13:45 - 14:30LHR-SFO
32h 45m1 stop
£298TAP AIR PORTUGAL
Find Deal
Thu, 21 Aug - Wed, 27 Aug
TAP AIR PORTUGAL Logo
16:20 - 09:45SFO-LGW
33h 25m1 stop
TAP AIR PORTUGAL Logo
16:25 - 14:30LGW-SFO
30h 05m1 stop
£300TAP AIR PORTUGAL
Find Deal
Thu, 21 Aug - Wed, 27 Aug
TAP AIR PORTUGAL Logo
16:20 - 22:55SFO-LHR
22h 35m1 stop
TAP AIR PORTUGAL Logo
13:45 - 14:30LHR-SFO
32h 45m1 stop
£308TAP AIR PORTUGAL
Find Deal
Thu, 18 Sep - Wed, 8 Oct
 Logo
17:45 - 20:10SFO-LGW
18h 25m1 stop
 Logo
08:50 - 15:55LGW-SFO
15h 05m1 stop
Mon, 18 Aug - Tue, 26 Aug
 Logo
17:40 - 21:25SFO-LTN
19h 45m1 stop
 Logo
10:00 - 15:55LTN-SFO
13h 55m1 stop
Mon, 18 Aug - Tue, 26 Aug
Virgin Atlantic Logo
13:45 - 14:15SFO-LHR
16h 30m1 stop
Virgin Atlantic Logo
06:15 - 12:50LHR-SFO
14h 35m1 stop
£355Virgin Atlantic
Find Deal
Sun, 3 Aug - Tue, 19 Aug
Virgin Atlantic Logo
21:20 - 15:40SFO-LHR
10h 20mdirect
Virgin Atlantic Logo
06:15 - 12:50LHR-SFO
14h 35m1 stop
£358Virgin Atlantic
Find Deal
Sun, 3 Aug - Tue, 19 Aug
Iberia Logo
17:45 - 20:00SFO-LGW
18h 15m1 stop
Iberia Logo
15:05 - 23:59LGW-SFO
16h 54m1 stop
£367Iberia
Find Deal
Tue, 23 Sep - Tue, 30 Sep
Iberia Logo
14:22 - 20:00SFO-LGW
21h 38m2 stops
Iberia Logo
15:05 - 23:59LGW-SFO
16h 54m1 stop
£370Iberia
Find Deal
Tue, 23 Sep - Thu, 2 Oct
British Airways Logo
06:05 - 08:10SFO-LGW
18h 05m1 stop
British Airways Logo
15:05 - 09:16LGW-SFO
26h 11m1 stop
£373British Airways
Find Deal
Wed, 13 Aug - Wed, 27 Aug

TAP AIR PORTUGAL flights from San Francisco to London

Our best TAP AIR PORTUGAL deals on San Francisco to London flight tickets
TAP AIR PORTUGAL
21 Aug
SFO16:20San Francisco
22h 35m
1 stop
LHR22:55London Heathrow
27 Aug
LHR13:45London Heathrow
32h 45m
1 stop
SFO14:30San Francisco
TAP AIR PORTUGAL
21 Aug
SFO16:20San Francisco
33h 25m
1 stop
LGW09:45London Gatwick
27 Aug
LGW16:25London Gatwick
30h 05m
1 stop
SFO14:30San Francisco
TAP AIR PORTUGAL
18 Sept
SFO16:20San Francisco
22h 35m
1 stop
LHR22:55London Heathrow
8 Oct
LHR13:45London Heathrow
32h 45m
1 stop
SFO14:30San Francisco

Scandinavian Airlines flights from San Francisco to London

Our best Scandinavian Airlines deals on San Francisco to London flight tickets
Scandinavian Airlines
24 Aug
SFO19:40San Francisco
29h 15m
2 stops
LHR08:55London Heathrow
27 Aug
LHR06:40London Heathrow
17h 50m
1 stop
SFO16:30San Francisco
Scandinavian Airlines
26 Oct
SFO21:30San Francisco
35h 30m
1 stop
LHR16:00London Heathrow
29 Oct
LHR09:55London Heathrow
40h 30m
2 stops
SFO19:25San Francisco

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 typical price of a round-trip flight between San Francisco and London?

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 £465, 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 £483.

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

Our data shows that Wednesday is the least expensive day to fly to London. Tickets to fly out on this day can be as low as £491. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from San Francisco to London for around £667.

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

The cheapest time of day to fly to London is in the evening when flights can be purchased for as low as £554. Flights at midday are often more expensive, with an average ticket price of £790.

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 £568 when searching weeks before you fly. 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 £531 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?

No. A direct flight is the cheapest option for a flight between San Francisco to London.

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

As of July 2025, prices for San Francisco to London flights are approximately 35% 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 return 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

£133

Fastest flight time

10h 20m

Direct flights

Every day

Airports in London

5 airports
The best one-way flight to London from San Francisco in the past 72 hours is £133. The best return flight deal from San Francisco to London found on momondo in the last 72 hours is £298.
The fastest flight from San Francisco to London takes 10h 20m
Direct flights go from San Francisco to London every day.
There are 5 airports near London: London City (LCY), London Luton (LTN), London Heathrow (LHR), London Stansted (STN), London Gatwick (LGW)

  • How far is San Francisco to London by plane?

    A flight from San Francisco to London will travel around 5349.7 mi. A reasonable flight in good conditions will take 10h 20m.

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

    Prices for flights from San Francisco Airport to London were last updated today.

  • 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 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.

  • 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
TAP AIR PORTUGALPriceFrom £385Free CancellationRating
7.1
1,908 reviews
Search TAP AIR PORTUGAL flights
Virgin AtlanticPriceFrom £404Free CancellationRating
7.4
654 reviews
Search Virgin Atlantic flights
IberiaPriceFrom £421Free CancellationRating
7.0
2,820 reviews
Search Iberia flights
British AirwaysPriceFrom £423Free CancellationRating
6.6
7,093 reviews
Search British Airways flights
Air CanadaPriceFrom £427Free CancellationRating
7.1
9,681 reviews
Search Air Canada flights
KLMPriceFrom £435Free CancellationRating
7.8
1,367 reviews
Search KLM flights
United AirlinesPriceFrom £450Free CancellationRating
7.4
8,844 reviews
Search United Airlines flights
LufthansaPriceFrom £473Free CancellationRating
6.8
7,207 reviews
Search Lufthansa flights
  • KLM Flights From San Francisco to London

    The lowest priced KLM flight from San Francisco to London from the last 72 hours was £594. Generally, KLM has 11 flights on this route every week with an average price of £675. KLM is rated 7.8/10 by our users.

  • Virgin Atlantic Flights From San Francisco to London

    The best Virgin Atlantic deal for San Francisco to London flight tickets found on momondo in the last 72 hours was £552, round-trip. It should be noted that an average Virgin Atlantic flight deal for this route in this time was higher, at £742 round-trip. Virgin Atlantic operates 11 flights out of San Francisco into London in an average week, so prices vary by time and availability. 654 Virgin Atlantic reviews by users on momondo have scored the airline at 7.4/10.


Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Eastbourne
Milton Keynes
Luton
Southend-on-Sea
Slough
Maidstone
Canterbury
Gatwick
Ipswich
Ilford
Dartford
Hounslow
Margate
Colchester
Guildford
Worthing
Winchester
Dover
Chelmsford
Croydon

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?

Yes. momondo enables you to select and highlight flights to London from San Francisco with this policy.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to London from San Francisco.

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

If you are not ready to book a flight from San Francisco to London now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to London and let you know when they change.


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1 adult
Wed 9/7
Wed 16/7

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