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Cheap flights from San Francisco to London from £163

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 20/10. 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

Logo
08:30 - 11:50SFO-STN
19h 20m2 stops
Logo
05:55 - 20:35STN-SFO
21h 40m2 stops
£388
Find Deal
Mon, 20 Oct - Wed, 29 Oct
Logo
08:25 - 20:15SFO-STN
27h 50m2 stops
Logo
14:25 - 16:30STN-SFO
34h 05m2 stops
£389
Find Deal
Tue, 25 Nov - Mon, 1 Dec
Logo
17:20 - 21:05SFO-STN
19h 45m1 stop
Logo
06:30 - 15:35STN-SFO
17h 05m1 stop
£415
Find Deal
Wed, 19 Nov - Wed, 3 Dec
Logo
14:40 - 19:40SFO-STN
21h 00m2 stops
Logo
05:55 - 21:22STN-SFO
23h 27m2 stops
£419
Find Deal
Wed, 19 Nov - Wed, 3 Dec
Logo
17:40 - 22:55SFO-STN
21h 15m1 stop
Logo
08:15 - 15:55STN-SFO
15h 40m1 stop
£421
Find Deal
Tue, 9 Sep - Tue, 16 Sep
Logo
17:40 - 20:55SFO-STN
19h 15m1 stop
Logo
08:15 - 15:55STN-SFO
15h 40m1 stop
£423
Find Deal
Wed, 10 Sep - Thu, 18 Sep
Logo
17:40 - 14:20SFO-STN
12h 40m1 stop
Logo
08:15 - 15:55STN-SFO
15h 40m1 stop
£427
Find Deal
Tue, 9 Sep - Tue, 16 Sep
Logo
17:20 - 21:05SFO-STN
19h 45m1 stop
Logo
06:30 - 15:35STN-SFO
17h 05m1 stop
£428
Find Deal
Wed, 26 Nov - Wed, 3 Dec
Logo
08:40 - 12:00SFO-STN
19h 20m2 stops
Logo
21:45 - 19:51STN-SFO
30h 06m2 stops
£428
Find Deal
Tue, 16 Sep - Tue, 23 Sep
Logo
14:40 - 19:40SFO-STN
21h 00m2 stops
Logo
05:55 - 21:22STN-SFO
23h 27m2 stops
£431
Find Deal
Wed, 19 Nov - Wed, 3 Dec

momondo Fare Finder

 
Customise your flight search to find flights from San Francisco to London Stansted 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 1 August 2025.
Use the filters below to find and compare flights from San Francisco to London Stansted Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

San FranciscoLondon

SFO - STN

SFOSTN

San Francisco

Mon 20/10

08:30-11:50

2 stops19h 20m

London Stansted

Wed 29/10

05:55-20:35

2 stops21h 40m

£388

San FranciscoLondon

SFO - STN

SFOSTN

San Francisco

Tue 25/11

08:25-20:15

2 stops27h 50m

London Stansted

Mon 1/12

14:25-16:30

2 stops34h 05m

£389

San FranciscoLondon

SFO - STN

SFOSTN

San Francisco

Wed 19/11

17:20-21:05

1 stop19h 45m

London Stansted

Wed 3/12

06:30-15:35

1 stop17h 05m

£415

San FranciscoLondon

SFO - STN

SFOSTN

San Francisco

Wed 19/11

14:40-19:40

2 stops21h 00m

London Stansted

Wed 3/12

05:55-21:22

2 stops23h 27m

£419

San FranciscoLondon

SFO - STN

SFOSTN

San Francisco

Tue 9/9

17:40-22:55

1 stop21h 15m

London Stansted

Tue 16/9

08:15-15:55

1 stop15h 40m

£421

San FranciscoLondon

SFO - STN

SFOSTN

San Francisco

Wed 10/9

17:40-20:55

1 stop19h 15m

London Stansted

Thu 18/9

08:15-15:55

1 stop15h 40m

£423

San FranciscoLondon

SFO - STN

SFOSTN

San Francisco

Tue 9/9

17:40-14:20

1 stop12h 40m

London Stansted

Tue 16/9

08:15-15:55

1 stop15h 40m

£427

San FranciscoLondon

SFO - STN

SFOSTN

San Francisco

Wed 26/11

17:20-21:05

1 stop19h 45m

London Stansted

Wed 3/12

06:30-15:35

1 stop17h 05m

£428

San FranciscoLondon

SFO - STN

SFOSTN

San Francisco

Tue 16/9

08:40-12:00

2 stops19h 20m

London Stansted

Tue 23/9

21:45-19:51

2 stops30h 06m

£428

San FranciscoLondon

SFO - STN

SFOSTN

San Francisco

Wed 19/11

14:40-19:40

2 stops21h 00m

London Stansted

Wed 3/12

05:55-21:22

2 stops23h 27m

£431

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

When to book flights from San Francisco to London Stansted Airport

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

Cheap San Francisco to London Stansted Airport (SFO to STN) flight deals and tips

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

Best price found

£163

Fastest flight time

12h 40m

Direct flights

None
The best one-way flight to London Stansted Airport from San Francisco in the past 72 hours is £163. The best return flight deal from San Francisco to London Stansted Airport found on momondo in the last 72 hours is £388.
The fastest flight from San Francisco to London Stansted Airport takes 12h 40m
There are no direct flights from San Francisco to London Stansted Airport. Popular non-direct route for this connection is San Francisco Airport - London Stansted Airport.
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  • How far is San Francisco to London Stansted by plane?

    The straight-line distance from San Francisco to London Stansted is 5340.7 mi. By plane, this route typically takes 12h 40m.

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

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

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from San Francisco Airport to London Stansted Airport.

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

    The travel and health documents required for your trip to London Stansted 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 Stansted Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • How do I get Price Alerts for flights from San Francisco to London Stansted Airport?

    Confirm your travel details to search for the latest offers for flights from San Francisco to London Stansted Airport. While browsing offers there will be the option to toggle “Price Alerts”. You’ll then receive updates when prices for the flight route increase or decrease.

  • How can I save money on flights from San Francisco to London Stansted Airport with momondo?

    Plan your trips smart with the “Price Forecast” feature, which uses flight data to help you pick the best days to fly for the lowest fares. Our “Price Calendar” helps you get the most for your money by showing you when it’s most advantageous to fly. Curate your own travel experiences for less with “Explore”. Expert travel hacks to fuel your next adventure are a click away with “Discover” by momondo. Set up our “Price Alerts” to track fare changes and book when prices are at their lowest point.

  • How does momondo find its flight prices?

    We aggregate our prices from over 700+ competitors from airlines to OTAs. We operate in over 30 markets worldwide to show you a wide range of travel options.

Travelling to a place near London?

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Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from San Francisco to London for you.

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?

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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