Latest deals
Insights
When to book
FAQs
Price Alerts

Cheap flights from London Stansted Airport to San Francisco from $494

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 1/11. 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

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

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
6:30 am - 3:35 pm
STN
-
SFO
17h 05m1 stop
Multiple Airlines Logo
5:20 pm - 9:20 pm
SFO
-
STN
20h 00m1 stop
$622Multiple Airlines
Tue, Feb 10 - Tue, Feb 17
Multiple Airlines Logo
9:20 pm - 4:05 pm
STN
-
SFO
26h 45m2 stops
Multiple Airlines Logo
4:35 pm - 10:40 pm
SFO
-
STN
22h 05m2 stops
$648Multiple Airlines
Thu, Jan 22 - Wed, Mar 4
Multiple Airlines Logo
4:20 pm - 1:25 pm
STN
-
SFO
29h 05m2 stops
Multiple Airlines Logo
3:40 pm - 8:00 pm
SFO
-
STN
20h 20m2 stops
$657Multiple Airlines
Fri, Jan 23 - Mon, Jan 26
Multiple Airlines Logo
8:30 am - 4:35 pm
STN
-
SFO
16h 05m1 stop
Multiple Airlines Logo
6:20 pm - 6:20 pm
SFO
-
STN
16h 00m1 stop
$658Multiple Airlines
Sun, Jan 18 - Sun, Jan 25
Multiple Airlines Logo
8:30 am - 3:35 pm
STN
-
SFO
15h 05m1 stop
Multiple Airlines Logo
5:20 pm - 9:20 pm
SFO
-
STN
20h 00m1 stop
$661Multiple Airlines
Mon, Feb 9 - Mon, Feb 16
Multiple Airlines Logo
8:30 am - 3:35 pm
STN
-
SFO
15h 05m1 stop
Multiple Airlines Logo
5:20 pm - 2:20 pm
SFO
-
STN
13h 00m1 stop
$662Multiple Airlines
Fri, Jan 23 - Mon, Jan 26
Multiple Airlines Logo
7:55 am - 5:55 pm
STN
-
SFO
18h 00m1 stop
Multiple Airlines Logo
7:40 pm - 8:55 pm
SFO
-
STN
17h 15m1 stop
$671Multiple Airlines
Tue, Apr 14 - Tue, Apr 21
Multiple Airlines Logo
7:55 am - 5:55 pm
STN
-
SFO
18h 00m1 stop
Multiple Airlines Logo
8:10 pm - 7:55 am
SFO
-
STN
27h 45m2 stops
$680Multiple Airlines
Tue, Apr 28 - Tue, May 12
Multiple Airlines Logo
7:55 am - 5:55 pm
STN
-
SFO
18h 00m1 stop
Multiple Airlines Logo
5:45 pm - 5:35 pm
SFO
-
STN
15h 50m1 stop
$685Multiple Airlines
Tue, Apr 21 - Sun, Apr 26
Multiple Airlines Logo
8:05 pm - 4:05 pm
STN
-
SFO
28h 00m2 stops
Multiple Airlines Logo
4:35 pm - 8:00 pm
SFO
-
STN
19h 25m2 stops
$686Multiple Airlines
Thu, Jan 29 - Mon, Feb 2

momondo Fare Finder

 
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 December 28, 2025.
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

LondonSan Francisco

STN - SFO

STNSFO

London Stansted

Tue 2/10

6:30 am-3:35 pm

1 stop17h 05m

San Francisco

Tue 2/17

5:20 pm-9:20 pm

1 stop20h 00m

$622

LondonSan Francisco

STN - SFO

STNSFO

London Stansted

Thu 1/22

9:20 pm-4:05 pm

2 stops26h 45m

San Francisco

Wed 3/4

4:35 pm-10:40 pm

2 stops22h 05m

$648

LondonSan Francisco

STN - SFO

STNSFO

London Stansted

Fri 1/23

4:20 pm-1:25 pm

2 stops29h 05m

San Francisco

Mon 1/26

3:40 pm-8:00 pm

2 stops20h 20m

$657

LondonSan Francisco

STN - SFO

STNSFO

London Stansted

Sun 1/18

8:30 am-4:35 pm

1 stop16h 05m

San Francisco

Sun 1/25

6:20 pm-6:20 pm

1 stop16h 00m

$658

LondonSan Francisco

STN - SFO

STNSFO

London Stansted

Mon 2/9

8:30 am-3:35 pm

1 stop15h 05m

San Francisco

Mon 2/16

5:20 pm-9:20 pm

1 stop20h 00m

$661

LondonSan Francisco

STN - SFO

STNSFO

London Stansted

Fri 1/23

8:30 am-3:35 pm

1 stop15h 05m

San Francisco

Mon 1/26

5:20 pm-2:20 pm

1 stop13h 00m

$662

LondonSan Francisco

STN - SFO

STNSFO

London Stansted

Tue 4/14

7:55 am-5:55 pm

1 stop18h 00m

San Francisco

Tue 4/21

7:40 pm-8:55 pm

1 stop17h 15m

$671

LondonSan Francisco

STN - SFO

STNSFO

London Stansted

Tue 4/28

7:55 am-5:55 pm

1 stop18h 00m

San Francisco

Tue 5/12

8:10 pm-7:55 am

2 stops27h 45m

$680

LondonSan Francisco

STN - SFO

STNSFO

London Stansted

Tue 4/21

7:55 am-5:55 pm

1 stop18h 00m

San Francisco

Sun 4/26

5:45 pm-5:35 pm

1 stop15h 50m

$685

LondonSan Francisco

STN - SFO

STNSFO

London Stansted

Thu 1/29

8:05 pm-4:05 pm

2 stops28h 00m

San Francisco

Mon 2/2

4:35 pm-8:00 pm

2 stops19h 25m

$686

Flights are sorted by cheapest round-trip flights first.

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

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 $681. The most expensive day to fly to San Francisco is Friday, with ticket prices averaging around $746.

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 evening. Our users have found flights to San Francisco in the evening for as low as $682. Flights in the afternoon are often more expensive with an average ticket price of $737.

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 00m

Direct flights

None
The fastest flight from London Stansted Airport to San Francisco takes 15h 00m
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

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

    The distance between London Stansted and San Francisco is about 5340.7 mi. Typically, this will take 15h 00m 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
Roseville
Hayward
Calistoga
Big Sur
Santa Clara
Walnut Creek
Berkeley
Daly City
Fremont
Half Moon Bay
Vallejo
Livermore
Salinas
Sunnyvale
Pacifica

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.

An easier way to manage your San Francisco 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.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Tue 1/27
Tue 2/3
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States