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Cheap flights from San Francisco to London from £173

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 6/8. 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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Find the cheapest flights from San Francisco to London

Cheap return flights

KAYAK's recommended return flight deals from the most popular airlines that fly from San Francisco to London.
19:40 - 09:35SFO-LHR
53h 55m2 stops
06:40 - 16:30LHR-SFO
41h 50m2 stops
£377Scandinavian Airlines
Find Deal
Wed, 20 Aug - Sun, 24 Aug
19:40 - 17:40SFO-LHR
14h 00m1 stop
06:40 - 16:30LHR-SFO
17h 50m1 stop
£391Scandinavian Airlines
Find Deal
Sat, 13 Sep - Tue, 16 Sep
15:55 - 10:25SFO-LHR
10h 30mdirect
12:10 - 16:10LHR-SFO
36h 00m1 stop
£503United Airlines
Find Deal
Wed, 16 Apr - Wed, 30 Apr
06:20 - 08:10SFO-LGW
17h 50m1 stop
15:05 - 09:25LGW-SFO
26h 20m1 stop
£504British Airways
Find Deal
Mon, 5 May - Fri, 16 May
15:55 - 10:25SFO-LHR
10h 30mdirect
07:25 - 19:00LHR-SFO
19h 35m1 stop
£505United Airlines
Find Deal
Tue, 8 Apr - Thu, 17 Apr
16:20 - 10:55SFO-LHR
10h 35mdirect
14:15 - 17:15LHR-SFO
11h 00mdirect
£528British Airways
Find Deal
Wed, 7 May - Tue, 13 May
13:45 - 18:30SFO-LCY
20h 45m1 stop
20:10 - 11:45LCY-SFO
23h 35m1 stop
£542Virgin Atlantic
Find Deal
Mon, 7 Apr - Mon, 14 Apr
13:45 - 16:40SFO-LCY
18h 55m2 stops
20:10 - 11:45LCY-SFO
23h 35m1 stop
£545Virgin Atlantic
Find Deal
Mon, 28 Apr - Mon, 19 May
14:40 - 16:25SFO-LCY
17h 45m1 stop
19:10 - 12:40LCY-SFO
25h 30m1 stop
£568Lufthansa
Find Deal
Tue, 15 Apr - Tue, 13 May
14:40 - 16:25SFO-LCY
17h 45m1 stop
19:10 - 12:40LCY-SFO
25h 30m1 stop
£592Lufthansa
Find Deal
Tue, 16 Sep - Tue, 23 Sep

Finnair flights from San Francisco to London

Our best Finnair deals on San Francisco to London flight tickets
Finnair
6 Apr
SFO19:30San Francisco
10h 25m
LHR13:55London Heathrow
22 Apr
LHR10:45London Heathrow
11h 05m
SFO13:50San Francisco
Finnair
8 Apr
SFO16:20San Francisco
10h 35m
LHR10:55London Heathrow
22 Apr
LHR10:45London Heathrow
11h 05m
SFO13:50San Francisco
Finnair
8 Apr
SFO16:20San Francisco
10h 35m
LHR10:55London Heathrow
29 Apr
LHR10:45London Heathrow
11h 05m
SFO13:50San Francisco

Iberia flights from San Francisco to London

Our best Iberia deals on San Francisco to London flight tickets
Iberia
28 Apr
SFO19:30San Francisco
10h 25m
LHR13:55London Heathrow
6 May
LHR10:45London Heathrow
11h 05m
SFO13:50San Francisco
Iberia
19 Sept
SFO16:35San Francisco
10h 25m
LHR11:00London Heathrow
10 Oct
LHR14:15London Heathrow
11h 10m
SFO17:25San Francisco
Iberia
2 Sept
SFO19:20San Francisco
10h 25m
LHR13:45London Heathrow
14 Oct
LHR10:45London Heathrow
11h 05m
SFO13:50San 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 £489, 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 £510.

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 £533. 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 £740.

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 afternoon when flights can be purchased for as low as £613. Flights at midday are often more expensive, with an average ticket price of £810.

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 6 weeks ahead of your departure date. In general, you can expect to find flights to London for around £610 when searching 6 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 £590 on momondo.

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

There are 3 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.

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

As of March 2025, prices for San Francisco to London flights are approximately 1% 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

£173

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 £173. The best return flight deal from San Francisco to London found on momondo in the last 72 hours is £377.
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 Heathrow (LHR), London Luton (LTN), 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
FinnairPriceFrom £379Free CancellationRating
7.6
1,267 reviews
Search Finnair flights
TAP AIR PORTUGALPriceFrom £406Free CancellationRating
7.1
1,827 reviews
Search TAP AIR PORTUGAL flights
Virgin AtlanticPriceFrom £438Free CancellationRating
7.4
634 reviews
Search Virgin Atlantic flights
IberiaPriceFrom £444Free CancellationRating
7.0
2,651 reviews
Search Iberia flights
British AirwaysPriceFrom £447Free CancellationRating
6.6
6,712 reviews
Search British Airways flights
Air CanadaPriceFrom £451Free CancellationRating
7.0
8,986 reviews
Search Air Canada flights
KLMPriceFrom £459Free CancellationRating
7.8
1,321 reviews
Search KLM flights
United AirlinesPriceFrom £472Free CancellationRating
7.4
8,603 reviews
Search United Airlines flights
LufthansaPriceFrom £500Free CancellationRating
6.7
6,956 reviews
Search Lufthansa flights
DeltaPriceFrom £530Free CancellationRating
8.0
7,896 reviews
Search Delta flights
  • Delta Flights From San Francisco to London

    The lowest priced Delta flight from San Francisco to London from the last 72 hours was £686. Generally, Delta has 3 flights on this route every week with an average price of £931. Delta is rated 8.0/10 by our users.

  • KLM Flights From San Francisco to London

    The best KLM deal for San Francisco to London flight tickets found on momondo in the last 72 hours was £594, round-trip. It should be noted that an average KLM flight deal for this route in this time was higher, at £681 round-trip. KLM operates 3 flights out of San Francisco into London in an average week, so prices vary by time and availability. 1,321 KLM reviews by users on momondo have scored the airline at 7.8/10.


Travelling to a place near London?

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

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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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