Latest deals
Insights
When to book
FAQs
Price Alerts

Cheap flights from London Stansted Airport to San Francisco from $601

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 7/20. 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
1 adult, Economy, 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
3:10 pm - 2:40 pm
STN
-
SFO
31h 30m
2 stops
Multiple Airlines Logo
4:45 pm - 8:55 pm
SFO
-
STN
20h 10m
2 stops
$741Multiple Airlines
Tue, Sep 1 - Tue, Sep 15
Multiple Airlines Logo
3:15 pm - 2:40 pm
STN
-
SFO
31h 25m
2 stops
Multiple Airlines Logo
4:45 pm - 7:35 pm
SFO
-
STN
18h 50m
2 stops
$750Multiple Airlines
Mon, Aug 31 - Mon, Sep 7
Multiple Airlines Logo
9:20 pm - 4:15 pm
STN
-
SFO
26h 55m
2 stops
Multiple Airlines Logo
7:35 pm - 12:10 am
SFO
-
STN
20h 35m
2 stops
$762Multiple Airlines
Wed, Jul 1 - Wed, Jul 8
Multiple Airlines Logo
6:35 am - 3:55 pm
STN
-
SFO
17h 20m
1 stop
Multiple Airlines Logo
5:40 pm - 9:20 pm
SFO
-
STN
19h 40m
1 stop
$784Multiple Airlines
Sat, Jun 13 - Sat, Jun 20
Multiple Airlines Logo
1:45 pm - 2:40 pm
STN
-
SFO
32h 55m
3 stops
Multiple Airlines Logo
4:45 pm - 10:05 pm
SFO
-
STN
21h 20m
2 stops
$793Multiple Airlines
Fri, Sep 4 - Sun, Sep 13
Multiple Airlines Logo
6:30 am - 12:20 pm
STN
-
SFO
37h 50m
2 stops
Multiple Airlines Logo
5:40 pm - 7:50 am
SFO
-
STN
30h 10m
1 stop
$800Multiple Airlines
Thu, Jun 25 - Tue, Jul 28
Multiple Airlines Logo
6:30 am - 12:20 pm
STN
-
SFO
37h 50m
2 stops
Multiple Airlines Logo
5:40 pm - 9:20 pm
SFO
-
STN
19h 40m
1 stop
$801Multiple Airlines
Thu, Jun 25 - Tue, Aug 11
Multiple Airlines Logo
1:15 pm - 2:40 pm
STN
-
SFO
33h 25m
3 stops
Multiple Airlines Logo
4:45 pm - 11:20 pm
SFO
-
STN
22h 35m
2 stops
$804Multiple Airlines
Sat, Sep 5 - Sat, Sep 19
Multiple Airlines Logo
6:30 am - 12:20 pm
STN
-
SFO
37h 50m
2 stops
Multiple Airlines Logo
5:40 pm - 11:20 pm
SFO
-
STN
21h 40m
1 stop
$805Multiple Airlines
Thu, Jun 25 - Wed, Aug 12
Multiple Airlines Logo
6:30 am - 12:20 pm
STN
-
SFO
37h 50m
2 stops
Multiple Airlines Logo
5:40 pm - 11:20 pm
SFO
-
STN
21h 40m
1 stop
$807Multiple Airlines
Thu, Jul 16 - Wed, Jul 29

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 June 4, 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

Tue 9/1

3:10 pm-2:40 pm

2 stops31h 30m

San Francisco

Tue 9/15

4:45 pm-8:55 pm

2 stops20h 10m

$741

LondonSan Francisco

STN - SFO

STNSFO

London Stansted

Mon 8/31

3:15 pm-2:40 pm

2 stops31h 25m

San Francisco

Mon 9/7

4:45 pm-7:35 pm

2 stops18h 50m

$750

LondonSan Francisco

STN - SFO

STNSFO

London Stansted

Wed 7/1

9:20 pm-4:15 pm

2 stops26h 55m

San Francisco

Wed 7/8

7:35 pm-12:10 am

2 stops20h 35m

$762
Quickest round-trip

LondonSan Francisco

STN - SFO

STNSFO

London Stansted

Sat 6/13

6:35 am-3:55 pm

1 stop17h 20m

San Francisco

Sat 6/20

5:40 pm-9:20 pm

1 stop19h 40m

$784

LondonSan Francisco

STN - SFO

STNSFO

London Stansted

Fri 9/4

1:45 pm-2:40 pm

3 stops32h 55m

San Francisco

Sun 9/13

4:45 pm-10:05 pm

2 stops21h 20m

$793

LondonSan Francisco

STN - SFO

STNSFO

London Stansted

Thu 6/25

6:30 am-12:20 pm

2 stops37h 50m

San Francisco

Tue 7/28

5:40 pm-7:50 am

1 stop30h 10m

$800

LondonSan Francisco

STN - SFO

STNSFO

London Stansted

Thu 6/25

6:30 am-12:20 pm

2 stops37h 50m

San Francisco

Tue 8/11

5:40 pm-9:20 pm

1 stop19h 40m

$801

LondonSan Francisco

STN - SFO

STNSFO

London Stansted

Sat 9/5

1:15 pm-2:40 pm

3 stops33h 25m

San Francisco

Sat 9/19

4:45 pm-11:20 pm

2 stops22h 35m

$804

LondonSan Francisco

STN - SFO

STNSFO

London Stansted

Thu 6/25

6:30 am-12:20 pm

2 stops37h 50m

San Francisco

Wed 8/12

5:40 pm-11:20 pm

1 stop21h 40m

$805

LondonSan Francisco

STN - SFO

STNSFO

London Stansted

Thu 7/16

6:30 am-12:20 pm

2 stops37h 50m

San Francisco

Wed 7/29

5:40 pm-11:20 pm

1 stop21h 40m

$807

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 Tuesday when prices can be found for as low as $744. The most expensive day to fly to San Francisco is Sunday, with ticket prices averaging around $885.

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 at noon. Our users have found flights to San Francisco at noon for as low as $762. Flights in the morning are often more expensive with an average ticket price of $797.

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

23h 25m

Direct flights

None
The fastest flight from London Stansted Airport to San Francisco takes 23h 25m
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 23h 25m 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
Hayward
Walnut Creek
Bodega Bay
Roseville
Santa Clara
Berkeley
Fremont
Vallejo
Sunnyvale
Big Sur
South San Francisco
Calistoga
Daly City
Pacific Grove
Salinas
Burlingame

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
Sat 7/4
Sat 7/11
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States