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Cheap flights from London Heathrow Airport to San Francisco from $473

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 Heathrow Airport to San Francisco departing on 9/25. 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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Find the cheapest flights from London Heathrow Airport to San Francisco

Cheap round-trip flights

Logo
9:00 am - 8:53 pmLHR-SFO
19h 53m2 stops
Logo
8:25 am - 11:20 amSFO-LHR
18h 55m2 stops
$525
Find Deal
vie., ene. 23 - sáb., feb. 7
Logo
9:00 am - 8:53 pmLHR-SFO
19h 53m2 stops
Logo
8:31 am - 10:45 amSFO-LHR
18h 14m2 stops
$526
Find Deal
mar., ene. 20 - lun., feb. 2
British Airways Logo
11:45 am - 3:00 pmLHR-SFO
11h 15mnonstop
British Airways Logo
8:40 pm - 3:10 pmSFO-LHR
10h 30mnonstop
$530British Airways
Find Deal
mar., nov. 25 - mar., dic. 2
SWISS Logo
8:05 pm - 5:30 pmLHR-SFO
28h 25m1 stop
SWISS Logo
7:25 pm - 8:15 amSFO-LHR
28h 50m2 stops
$531SWISS
Find Deal
jue., oct. 30 - jue., nov. 6
Delta Logo
6:15 am - 12:50 pmLHR-SFO
14h 35m1 stop
Delta Logo
4:30 pm - 10:40 amSFO-LHR
10h 10mnonstop
$533Delta
Find Deal
jue., oct. 9 - mar., mar. 3
United Airlines Logo
10:35 am - 1:40 pmLHR-SFO
11h 05mnonstop
United Airlines Logo
11:40 am - 9:35 amSFO-LHR
13h 55m1 stop
$534United Airlines
Find Deal
vie., sep. 26 - dom., oct. 12
United Airlines Logo
10:35 am - 1:40 pmLHR-SFO
11h 05mnonstop
United Airlines Logo
1:05 pm - 7:25 amSFO-LHR
10h 20mnonstop
$535United Airlines
Find Deal
vie., oct. 3 - lun., oct. 13
British Airways Logo
8:20 am - 6:35 pmLHR-SFO
18h 15m1 stop
British Airways Logo
3:50 pm - 4:05 pmSFO-LHR
16h 15m1 stop
$540British Airways
Find Deal
sáb., sep. 27 - mié., oct. 8
Delta Logo
6:30 am - 8:05 pmLHR-SFO
21h 35m2 stops
Delta Logo
10:50 pm - 6:25 amSFO-LHR
23h 35m1 stop
$545Delta
Find Deal
vie., oct. 3 - dom., oct. 12
Lufthansa Logo
6:30 am - 12:40 pmLHR-SFO
14h 10m1 stop
Lufthansa Logo
7:50 pm - 2:10 pmSFO-LHR
10h 20mnonstop
$567Lufthansa
Find Deal
vie., sep. 26 - jue., oct. 9

British Airways flights from London Heathrow Airport to San Francisco

Our best British Airways deals on London Heathrow Airport to San Francisco flight tickets
British Airways
Nov 25
LHR11:45 amLondon Heathrow
11h 15m
SFO3:00 pmSan Francisco
Dec 2
SFO8:40 pmSan Francisco
10h 30m
LHR3:10 pmLondon Heathrow
$530
Find similar
British Airways
Sep 27
LHR8:20 amLondon Heathrow
18h 15m
1 stop
SFO6:35 pmSan Francisco
Oct 8
SFO3:50 pmSan Francisco
16h 15m
1 stop
LHR4:05 pmLondon Heathrow
$540
Find similar
British Airways
Sep 27
LHR4:55 pmLondon Heathrow
14h 21m
1 stop
SFO11:16 pmSan Francisco
Oct 4
SFO11:32 amSan Francisco
13h 03m
1 stop
LHR8:35 amLondon Heathrow
$541
Find similar

SWISS flights from London Heathrow Airport to San Francisco

Our best SWISS deals on London Heathrow Airport to San Francisco flight tickets
SWISS
Oct 30
LHR8:05 pmLondon Heathrow
28h 25m
1 stop
SFO5:30 pmSan Francisco
Nov 6
SFO7:25 pmSan Francisco
28h 50m
2 stops
LHR8:15 amLondon Heathrow
$531
Find similar
SWISS
Sep 16
LHR8:45 amLondon Heathrow
15h 25m
1 stop
SFO4:10 pmSan Francisco
Sep 29
SFO7:40 pmSan Francisco
18h 05m
1 stop
LHR9:45 pmLondon Heathrow
$553
Find similar
SWISS
Sep 18
LHR6:00 amLondon Heathrow
18h 10m
1 stop
SFO4:10 pmSan Francisco
Sep 25
SFO7:30 pmSan Francisco
28h 25m
1 stop
LHR7:55 amLondon Heathrow
$556
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from London Heathrow 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 septiembre 15, 2025.
Use the filters below to find and compare flights from London Heathrow Airport to San Francisco that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

vie. 1/23

9:00 am-8:53 pm

2 stops19h 53m

San Francisco

sáb. 2/7

8:25 am-11:20 am

2 stops18h 55m

$525

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

mar. 1/20

9:00 am-8:53 pm

2 stops19h 53m

San Francisco

lun. 2/2

8:31 am-10:45 am

2 stops18h 14m

$526

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

mar. 11/25

11:45 am-3:00 pm

Nonstop11h 15m

San Francisco

mar. 12/2

8:40 pm-3:10 pm

Nonstop10h 30m

$530

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

jue. 10/30

8:05 pm-5:30 pm

1 stop28h 25m

San Francisco

jue. 11/6

7:25 pm-8:15 am

2 stops28h 50m

$531

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

jue. 10/9

6:15 am-12:50 pm

1 stop14h 35m

San Francisco

mar. 3/3

4:30 pm-10:40 am

Nonstop10h 10m

$533

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

vie. 9/26

10:35 am-1:40 pm

Nonstop11h 05m

San Francisco

dom. 10/12

11:40 am-9:35 am

1 stop13h 55m

$534

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

vie. 10/3

10:35 am-1:40 pm

Nonstop11h 05m

San Francisco

lun. 10/13

1:05 pm-7:25 am

Nonstop10h 20m

$535

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

sáb. 9/27

8:20 am-6:35 pm

1 stop18h 15m

San Francisco

mié. 10/8

3:50 pm-4:05 pm

1 stop16h 15m

$540

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

vie. 10/3

6:30 am-8:05 pm

2 stops21h 35m

San Francisco

dom. 10/12

10:50 pm-6:25 am

1 stop23h 35m

$545

LondonSan Francisco

LHR - SFO

LHRSFO

London Heathrow

vie. 9/26

6:30 am-12:40 pm

1 stop14h 10m

San Francisco

jue. 10/9

7:50 pm-2:10 pm

Nonstop10h 20m

$567

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 Heathrow 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 month to fly to San Francisco?

If you aren’t able to travel to San Francisco during the month of February, then flying in November is also cheap. Prices for this month can be found on momondo for an average of $579.

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

The cheapest day to depart from London Heathrow Airport to San Francisco is on a Thursday when prices can be found for as low as $646. The most expensive day to fly to San Francisco is Sunday, with ticket prices averaging around $750.

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

Our data shows that the cheapest London Heathrow 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 morning are often more expensive with an average ticket price of $718.

What is the cheapest London Heathrow to San Francisco flight route?

Fly from London Heathrow to San Francisco for the best London Heathrow - San Francisco flight prices

How far in advance should I book a flight to San Francisco?

You are more likely to see cheaper flights to San Francisco from London Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to San Francisco for around $669 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Francisco from London Heathrow Airport for as low as $619 on momondo.

What cabin class options are available on London Heathrow to San Francisco flights?

There are 4 cabin classes available to choose from on London Heathrow to San Francisco flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have London Heathrow Airport to San Francisco flight prices changed over time?

As of September 2025, prices for London Heathrow Airport to San Francisco flights are approximately 31% more expensive when compared to flights at the same time last year.

When to book flights from London Heathrow Airport to San Francisco

Are you open to changing your travel dates? Check out the ideal times to fly from London Heathrow 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 Heathrow Airport to San Francisco (LHR to SFO) flight deals and tips

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

Best Price Found

$619

Fastest flight time

11h 00m

Direct flights

Every day

Airports in San Francisco

1 airport
The best one-way flight to San Francisco from London Heathrow Airport in the past 72 hours is $619. The best round-trip flight deal from London Heathrow Airport to San Francisco found on momondo in the last 72 hours is $603.
The fastest flight from London Heathrow Airport to San Francisco takes 11h 00m
Direct flights go from London Heathrow Airport to San Francisco every day.
There is 1 airport near San Francisco: San Francisco (SFO)
Search flight deals

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

    The straight-line distance from London Heathrow to San Francisco is 5341.3 mi. By plane, this route typically takes 11h 00m.

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

    Prices for flights from London Heathrow Airport to San Francisco Airport are updated daily.

  • How many operators does momondo search for flights from London Heathrow Airport to San Francisco Airport?

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from London Heathrow Airport to San Francisco Airport.

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

    The necessary travel and health documents for your San Francisco Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from London Heathrow Airport to San Francisco?

  • What is the most popular airline from London Heathrow Airport to San Francisco?

Best airlines flying from London Heathrow Airport to San Francisco

Compare and see reviews for airlines that fly from London Heathrow Airport to San Francisco with momondo
Airline
Rating
Free Cancellation
Price
British AirwaysPriceFrom $509Free CancellationRating
6.6
7,361 reviews
Search British Airways flights
Brussels AirlinesPriceFrom $530Free CancellationRating
7.2
359 reviews
Search Brussels Airlines flights
Austrian AirlinesPriceFrom $539Free CancellationRating
7.6
850 reviews
Search Austrian Airlines flights
United AirlinesPriceFrom $541Free CancellationRating
7.4
8,929 reviews
Search United Airlines flights
Virgin AtlanticPriceFrom $550Free CancellationRating
7.4
664 reviews
Search Virgin Atlantic flights
DeltaPriceFrom $555Free CancellationRating
7.9
7,954 reviews
Search Delta flights
Scandinavian AirlinesPriceFrom $578Free CancellationRating
7.4
1,484 reviews
Search Scandinavian Airlines flights
LufthansaPriceFrom $579Free CancellationRating
6.8
7,407 reviews
Search Lufthansa flights
American AirlinesPriceFrom $596Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
IberiaPriceFrom $596Free CancellationRating
7.0
2,924 reviews
Search Iberia flights

  • Delta Flights From London Heathrow Airport to San Francisco

    Delta operates around 14 flights from London Heathrow Airport to San Francisco every week. The average price of these flights found in the last 72 hours has been $708, but momondo users have found Delta deals from London Heathrow Airport to San Francisco from as low as $555 round-trip. Delta has been scored 7.9/10 in 7,954 reviews.

  • Austrian Airlines Flights From London Heathrow Airport to San Francisco

    Austrian Airlines is also a popular choice for this route. Austrian Airlines flight deals for London Heathrow Airport to San Francisco start from as low as $539 round-trip, depending on your selected dates, with average Austrian Airlines deals seen on momondo around $736. Austrian Airlines operates 21 flights to San Francisco from London Heathrow Airport in an average week. Users have rated it 7.6/10 across 850 reviews.

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
Calistoga
Bodega Bay
Roseville
Hayward
Big Sur
Santa Clara
Daly City
Fremont
Berkeley
Half Moon Bay
Walnut Creek
Vallejo
Redwood City
Salinas
South San Francisco
Fairfield

Why use momondo?

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

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 London to San Francisco for you.

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?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from London to San Francisco.

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

Price alerts on flights to San Francisco from London are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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.
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