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Cheap flights from London Stansted Airport to San Francisco from $487

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 9/30. 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

Find the cheapest flights from London Stansted Airport to San Francisco

Cheap round-trip flights

Enter your travel dates to find the best prices.
Lufthansa Logo
4:25 pm - 2:30 pmSTN  London Stansted-SFO San Francisco
30h 05m1 stop Munich Franz Josef Strauss
Lufthansa Logo
9:05 pm - 3:35 pmSFO  San Francisco-STN London Stansted
34h 30m1 stop Munich Franz Josef Strauss
$599Lufthansa
Tue, Sep 22 - Tue, Sep 29
Multiple Airlines Logo
11:10 am - 2:40 pmSTN  London Stansted-SFO San Francisco
35h 30m2 stops Dublin Kastrup Copenhagen
Multiple Airlines Logo
4:45 pm - 11:20 pmSFO  San Francisco-STN London Stansted
22h 35m2 stops Kastrup Copenhagen Dublin
$639Multiple Airlines
Mon, Sep 28 - Mon, Oct 5
Multiple Airlines Logo
11:10 am - 2:40 pmSTN  London Stansted-SFO San Francisco
35h 30m3 stops Dublin Stockholm Arlanda Kastrup Copenhagen
Multiple Airlines Logo
4:45 pm - 11:20 pmSFO  San Francisco-STN London Stansted
22h 35m2 stops Kastrup Copenhagen Dublin
$642Multiple Airlines
Mon, Sep 28 - Mon, Oct 5
Multiple Airlines Logo
1:20 pm - 2:40 pmSTN  London Stansted-SFO San Francisco
33h 20m2 stops Dublin Kastrup Copenhagen
Multiple Airlines Logo
4:45 pm - 11:20 pmSFO  San Francisco-STN London Stansted
22h 35m2 stops Kastrup Copenhagen Dublin
$646Multiple Airlines
Mon, Sep 28 - Mon, Oct 5
Multiple Airlines Logo
9:45 am - 12:55 pmSTN  London Stansted-SFO San Francisco
35h 10m2 stops Milan Malpensa Paris Charles de Gaulle
Multiple Airlines Logo
3:10 pm - 11:00 pmSFO  San Francisco-STN London Stansted
23h 50m2 stops Paris Charles de Gaulle Milan Malpensa
$647Multiple Airlines
Sun, Nov 1 - Sun, Nov 8
Multiple Airlines Logo
11:10 am - 2:40 pmSTN  London Stansted-SFO San Francisco
35h 30m3 stops Dublin Stockholm Arlanda Kastrup Copenhagen
Multiple Airlines Logo
4:45 pm - 11:20 pmSFO  San Francisco-STN London Stansted
22h 35m2 stops Kastrup Copenhagen Dublin
$647Multiple Airlines
Mon, Sep 28 - Mon, Oct 5
Multiple Airlines Logo
11:10 am - 2:40 pmSTN  London Stansted-SFO San Francisco
35h 30m2 stops Dublin Kastrup Copenhagen
Multiple Airlines Logo
4:45 pm - 11:20 pmSFO  San Francisco-STN London Stansted
22h 35m2 stops Kastrup Copenhagen Dublin
$649Multiple Airlines
Mon, Sep 28 - Mon, Oct 5
Multiple Airlines Logo
9:45 pm - 1:15 pmSTN  London Stansted-SFO San Francisco
23h 30m2 stops Venice Marco Polo Rome Fiumicino
Multiple Airlines Logo
3:15 pm - 12:45 amSFO  San Francisco-STN London Stansted
25h 30m2 stops Rome Fiumicino Venice Marco Polo
$650Multiple Airlines
Tue, Sep 22 - Wed, Sep 30
Multiple Airlines Logo
11:10 am - 2:40 pmSTN  London Stansted-SFO San Francisco
35h 30m2 stops Dublin Kastrup Copenhagen
Multiple Airlines Logo
4:45 pm - 11:20 pmSFO  San Francisco-STN London Stansted
22h 35m2 stops Kastrup Copenhagen Dublin
$652Multiple Airlines
Mon, Sep 28 - Mon, Oct 5
Multiple Airlines Logo
11:10 am - 2:40 pmSTN  London Stansted-SFO San Francisco
35h 30m2 stops Dublin Kastrup Copenhagen
Multiple Airlines Logo
4:45 pm - 11:20 pmSFO  San Francisco-STN London Stansted
22h 35m2 stops Kastrup Copenhagen Dublin
$653Multiple Airlines
Mon, Sep 28 - Mon, Oct 5

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Lufthansa flights from London Stansted Airport to San Francisco

Our best Lufthansa deals on London Stansted Airport to San Francisco flight tickets
Lufthansa
Sep 22
STN4:25 pmLondon Stansted
30h 05m
1 stop
SFO2:30 pmSan Francisco
Sep 29
SFO9:05 pmSan Francisco
34h 30m
1 stop
STN3:35 pmLondon Stansted
$599
Lufthansa
Sep 21
STN4:25 pmLondon Stansted
30h 05m
1 stop
SFO2:30 pmSan Francisco
Oct 3
SFO9:05 pmSan Francisco
34h 30m
1 stop
STN3:35 pmLondon Stansted
$699
Lufthansa
Sep 21
STN4:25 pmLondon Stansted
40h 34m
2 stops
SFO12:59 amSan Francisco
Sep 30
SFO1:55 pmSan Francisco
17h 40m
1 stop
STN3:35 pmLondon Stansted
$715

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 August 15, 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 London Stansted - SFO San Francisco

STNSFO

London Stansted

Tue 9/22

4:25 pm-2:30 pm

1 stop30h 05m

San Francisco

Tue 9/29

9:05 pm-3:35 pm

1 stop34h 30m

$599

LondonSan Francisco

STN London Stansted - SFO San Francisco

STNSFO

London Stansted

Mon 9/28

11:10 am-2:40 pm

2 stops35h 30m

San Francisco

Mon 10/5

4:45 pm-11:20 pm

2 stops22h 35m

$639

LondonSan Francisco

STN London Stansted - SFO San Francisco

STNSFO

London Stansted

Mon 9/28

11:10 am-2:40 pm

3 stops35h 30m

San Francisco

Mon 10/5

4:45 pm-11:20 pm

2 stops22h 35m

$642

LondonSan Francisco

STN London Stansted - SFO San Francisco

STNSFO

London Stansted

Mon 9/28

1:20 pm-2:40 pm

2 stops33h 20m

San Francisco

Mon 10/5

4:45 pm-11:20 pm

2 stops22h 35m

$646

LondonSan Francisco

STN London Stansted - SFO San Francisco

STNSFO

London Stansted

Sun 11/1

9:45 am-12:55 pm

2 stops35h 10m

San Francisco

Sun 11/8

3:10 pm-11:00 pm

2 stops23h 50m

$647

LondonSan Francisco

STN London Stansted - SFO San Francisco

STNSFO

London Stansted

Mon 9/28

11:10 am-2:40 pm

3 stops35h 30m

San Francisco

Mon 10/5

4:45 pm-11:20 pm

2 stops22h 35m

$647

LondonSan Francisco

STN London Stansted - SFO San Francisco

STNSFO

London Stansted

Mon 9/28

11:10 am-2:40 pm

2 stops35h 30m

San Francisco

Mon 10/5

4:45 pm-11:20 pm

2 stops22h 35m

$649
Quickest round-trip

LondonSan Francisco

STN London Stansted - SFO San Francisco

STNSFO

London Stansted

Tue 9/22

9:45 pm-1:15 pm

2 stops23h 30m

San Francisco

Wed 9/30

3:15 pm-12:45 am

2 stops25h 30m

$650

LondonSan Francisco

STN London Stansted - SFO San Francisco

STNSFO

London Stansted

Mon 9/28

11:10 am-2:40 pm

2 stops35h 30m

San Francisco

Mon 10/5

4:45 pm-11:20 pm

2 stops22h 35m

$652

LondonSan Francisco

STN London Stansted - SFO San Francisco

STNSFO

London Stansted

Mon 9/28

11:10 am-2:40 pm

2 stops35h 30m

San Francisco

Mon 10/5

4:45 pm-11:20 pm

2 stops22h 35m

$653

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 Friday when prices can be found for as low as $743. The most expensive day to fly to San Francisco is Sunday, with ticket prices averaging around $901.

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 $761. Flights in the morning are often more expensive with an average ticket price of $799.

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

17h 05m

Direct flights

None
The fastest flight from London Stansted Airport to San Francisco takes 17h 05m
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 17h 05m 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
South San Francisco
Fremont
Berkeley
Bodega Bay
Hayward
Walnut Creek
Santa Clara
Vallejo
Roseville
Sonoma
Salinas
Sunnyvale
Milpitas
Daly City
Burlingame
Marina
Palo Alto

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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