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Cheap flights from London Stansted Airport to San Francisco from $525

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London Stansted Airport to San Francisco departing on 9/27. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Find the cheapest flights from London Stansted Airport to San Francisco

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
4:45 pm - 1:15 pm
STN
-
SFO
28h 30m
2 stops
Multiple Airlines Logo
3:15 pm - 12:45 am
SFO
-
STN
25h 30m
2 stops
$659Multiple Airlines
Wed, May 13 - Sun, May 17
Multiple Airlines Logo
9:25 am - 1:15 pm
STN
-
SFO
35h 50m
2 stops
Multiple Airlines Logo
3:15 pm - 12:45 am
SFO
-
STN
25h 30m
2 stops
$665Multiple Airlines
Mon, May 11 - Sun, May 17
Multiple Airlines Logo
11:25 am - 2:40 pm
STN
-
SFO
35h 15m
2 stops
Multiple Airlines Logo
4:45 pm - 10:20 pm
SFO
-
STN
21h 35m
2 stops
$692Multiple Airlines
Sun, May 3 - Sun, May 10
Multiple Airlines Logo
6:30 am - 3:50 pm
STN
-
SFO
17h 20m
1 stop
Multiple Airlines Logo
5:40 pm - 11:25 pm
SFO
-
STN
21h 45m
1 stop
$699Multiple Airlines
Thu, May 14 - Sun, May 17
Multiple Airlines Logo
6:30 am - 3:55 pm
STN
-
SFO
17h 25m
1 stop
Multiple Airlines Logo
5:40 pm - 11:20 pm
SFO
-
STN
21h 40m
1 stop
$706Multiple Airlines
Wed, May 6 - Wed, May 13
Multiple Airlines Logo
6:35 am - 3:50 pm
STN
-
SFO
17h 15m
1 stop
Multiple Airlines Logo
5:35 pm - 11:20 pm
SFO
-
STN
21h 45m
1 stop
$708Multiple Airlines
Fri, May 1 - Mon, May 11
Multiple Airlines Logo
8:30 am - 3:50 pm
STN
-
SFO
15h 20m
1 stop
Multiple Airlines Logo
5:40 pm - 5:35 pm
SFO
-
STN
15h 55m
1 stop
$715Multiple Airlines
Thu, May 7 - Wed, May 13
Multiple Airlines Logo
6:30 am - 3:50 pm
STN
-
SFO
17h 20m
1 stop
Multiple Airlines Logo
5:40 pm - 5:35 pm
SFO
-
STN
15h 55m
1 stop
$716Multiple Airlines
Thu, May 7 - Tue, May 19
Multiple Airlines Logo
4:30 pm - 2:40 pm
STN
-
SFO
30h 10m
3 stops
Multiple Airlines Logo
4:45 pm - 9:20 pm
SFO
-
STN
20h 35m
2 stops
$720Multiple Airlines
Fri, May 15 - Mon, May 25
Multiple Airlines Logo
6:30 am - 3:55 pm
STN
-
SFO
17h 25m
1 stop
Multiple Airlines Logo
5:40 pm - 7:30 pm
SFO
-
STN
17h 50m
1 stop
$721Multiple Airlines
Wed, May 27 - Wed, Jun 3

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Customize your flight search to find flights from London Stansted Airport to San Francisco 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 April 17, 2026.
Use the filters below to find and compare flights from London Stansted Airport to San Francisco that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LondonSan Francisco

STN - SFO

STNSFO

London Stansted

Wed 5/13

4:45 pm-1:15 pm

2 stops28h 30m

San Francisco

Sun 5/17

3:15 pm-12:45 am

2 stops25h 30m

$659

LondonSan Francisco

STN - SFO

STNSFO

London Stansted

Mon 5/11

9:25 am-1:15 pm

2 stops35h 50m

San Francisco

Sun 5/17

3:15 pm-12:45 am

2 stops25h 30m

$665

LondonSan Francisco

STN - SFO

STNSFO

London Stansted

Sun 5/3

11:25 am-2:40 pm

2 stops35h 15m

San Francisco

Sun 5/10

4:45 pm-10:20 pm

2 stops21h 35m

$692

LondonSan Francisco

STN - SFO

STNSFO

London Stansted

Thu 5/14

6:30 am-3:50 pm

1 stop17h 20m

San Francisco

Sun 5/17

5:40 pm-11:25 pm

1 stop21h 45m

$699

LondonSan Francisco

STN - SFO

STNSFO

London Stansted

Wed 5/6

6:30 am-3:55 pm

1 stop17h 25m

San Francisco

Wed 5/13

5:40 pm-11:20 pm

1 stop21h 40m

$706

LondonSan Francisco

STN - SFO

STNSFO

London Stansted

Fri 5/1

6:35 am-3:50 pm

1 stop17h 15m

San Francisco

Mon 5/11

5:35 pm-11:20 pm

1 stop21h 45m

$708
Quickest round-trip

LondonSan Francisco

STN - SFO

STNSFO

London Stansted

Thu 5/7

8:30 am-3:50 pm

1 stop15h 20m

San Francisco

Wed 5/13

5:40 pm-5:35 pm

1 stop15h 55m

$715

LondonSan Francisco

STN - SFO

STNSFO

London Stansted

Thu 5/7

6:30 am-3:50 pm

1 stop17h 20m

San Francisco

Tue 5/19

5:40 pm-5:35 pm

1 stop15h 55m

$716

LondonSan Francisco

STN - SFO

STNSFO

London Stansted

Fri 5/15

4:30 pm-2:40 pm

3 stops30h 10m

San Francisco

Mon 5/25

4:45 pm-9:20 pm

2 stops20h 35m

$720

LondonSan Francisco

STN - SFO

STNSFO

London Stansted

Wed 5/27

6:30 am-3:55 pm

1 stop17h 25m

San Francisco

Wed 6/3

5:40 pm-7:30 pm

1 stop17h 50m

$721

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 San Francisco from

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

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 day to depart on your flight to San Francisco?

The cheapest day to depart from London Stansted Airport to San Francisco is on a Thursday when prices can be found for as low as $717. The most expensive day to fly to San Francisco is Sunday, with ticket prices averaging around $773.

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

Our data shows that the cheapest London Stansted Airport to San Francisco flights are usually those with departure times in the afternoon. Our users have found flights to San Francisco in the afternoon for as low as $729. Flights in the morning are often more expensive with an average ticket price of $762.

When to book flights from London Stansted Airport to San Francisco

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

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

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

Fastest flight time

15h 20m

Direct flights

None
The fastest flight from London Stansted Airport to San Francisco takes 15h 20m
There are no direct flights from London Stansted Airport to San Francisco. There are no popular flight routes from London Stansted Airport to San Francisco.
Search flight deals

Frequently asked questions about flying from London Stansted Airport to San Francisco

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

    The distance between London Stansted and San Francisco is about 5341.0 mi. Typically, this will take 15h 20m by plane in normal conditions.

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

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

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

    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 London Stansted Airport to San Francisco Airport.

  • What documentation or ID do you need to fly to San Francisco Airport?

    The required travel and health documents for your San Francisco Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at San Francisco Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Traveling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
Santa Cruz
Carmel-by-the-Sea
Modesto
Sonoma
Bodega Bay
Walnut Creek
Roseville
Hayward
Berkeley
Santa Clara
Fremont
Big Sur
Vallejo
Calistoga
Daly City
Salinas
Half Moon Bay
Milpitas
Pacific Grove
Sunnyvale

Why use momondo?

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

Finding the right flight to San Francisco from London is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to San Francisco quick and easy, saving you time and money.

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

Yes. momondo allows you to filter the results for London to San Francisco flights to just show those with flexible booking policies.

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

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 San Francisco from London.

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

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

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