Cheap Flights from London (LHR) to San Francisco (SFO) from HK$3,254~

View HK$3,254 flight on Tue, 3 Feb 2026Opens in a new window

Popular airlines from Heathrow Airport (LHR) to San Francisco Intl. Airport (SFO)

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Find Cheap Flights from London (LHR) to San Francisco (SFO)

Prices were available within the past 7 days and start at HK$3,254 for one-way flights and HK$4,243 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Tue, 27 Jan - Sun, 8 Feb
LHR
London
SFO
San Francisco
HK$4,243 Return, found 3 days ago
HK$4,243
Return
found 3 days ago
Select American Airlines flight, departing Tue, 27 Jan from London to San Francisco, returning Sun, 8 Feb, priced at HK$4,243 found 3 days ago
British Airways
Sat, 21 Feb - Sun, 1 Mar
LHR
London
SFO
San Francisco
HK$4,328 Return, found 3 days ago
HK$4,328
Return
found 3 days ago
Select British Airways flight, departing Sat, 21 Feb from London to San Francisco, returning Sun, 1 Mar, priced at HK$4,328 found 3 days ago
British Airways
Sat, 21 Feb - Sun, 1 Mar
LHR
London
SFO
San Francisco
HK$4,329 Return, found 3 days ago
HK$4,329
Return
found 3 days ago
Select British Airways flight, departing Sat, 21 Feb from London to San Francisco, returning Sun, 1 Mar, priced at HK$4,329 found 3 days ago
Swiss International Air Lines
Fri, 24 Apr - Mon, 4 May
LHR
London
SFO
San Francisco
HK$4,332 Return, found 3 days ago
HK$4,332
Return
found 3 days ago
Select Swiss International Air Lines flight, departing Fri, 24 Apr from London to San Francisco, returning Mon, 4 May, priced at HK$4,332 found 3 days ago
United
Tue, 3 Feb - Tue, 10 Feb
LHR
London
SFO
San Francisco
HK$4,344 Return, found 1 day ago
HK$4,344
Return
found 1 day ago
Select United flight, departing Tue, 3 Feb from London to San Francisco, returning Tue, 10 Feb, priced at HK$4,344 found 1 day ago
American Airlines
Wed, 11 Feb - Wed, 18 Feb
LHR
London
SFO
San Francisco
HK$4,345 Return, found 5 days ago
HK$4,345
Return
found 5 days ago
Select American Airlines flight, departing Wed, 11 Feb from London to San Francisco, returning Wed, 18 Feb, priced at HK$4,345 found 5 days ago
Air Canada
Tue, 3 Feb - Tue, 10 Feb
LHR
London
SFO
San Francisco
HK$4,370 Return, found 1 day ago
HK$4,370
Return
found 1 day ago
Select Air Canada flight, departing Tue, 3 Feb from London to San Francisco, returning Tue, 10 Feb, priced at HK$4,370 found 1 day ago
Lufthansa
Fri, 24 Apr - Mon, 4 May
LHR
London
SFO
San Francisco
HK$4,383 Return, found 3 days ago
HK$4,383
Return
found 3 days ago
Select Lufthansa flight, departing Fri, 24 Apr from London to San Francisco, returning Mon, 4 May, priced at HK$4,383 found 3 days ago
British Airways
Sat, 21 Feb - Sun, 1 Mar
LHR
London
SFO
San Francisco
HK$4,468 Return, found 3 days ago
HK$4,468
Return
found 3 days ago
Select British Airways flight, departing Sat, 21 Feb from London to San Francisco, returning Sun, 1 Mar, priced at HK$4,468 found 3 days ago
Austrian Airlines
Thu, 23 Apr - Mon, 4 May
LHR
London
SFO
San Francisco
HK$4,620 Return, found 3 days ago
HK$4,620
Return
found 3 days ago
Select Austrian Airlines flight, departing Thu, 23 Apr from London to San Francisco, returning Mon, 4 May, priced at HK$4,620 found 3 days ago

Find the cheapest month to fly from London (LHR) to San Francisco (SFO)

November is typically the cheapest month to fly

From HK$3,675 - HK$5,850 per traveller.

Frequently asked questions

How much is a flight from Heathrow Airport to San Francisco Airport?
Within the past 7 days on Expedia, for flights departing within the next year, the lowest price available for a round-trip flight between LHR and San Francisco Intl. Airport (SFO) was HK$4,243. Great fares don't last long, so make sure you book yours today. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from London Heathrow to San Francisco Intl. Airport (SFO)?
Most flights can be canceled online, but each airline has its own set of terms and conditions. If you do have to cancel your flight, go to our Customer Service Portal and follow the instructions.
How do I find cheap flights from Heathrow Airport (LHR) to SFO that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for London Heathrow to San Francisco Airport flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Heathrow Airport to San Francisco Intl. Airport (SFO)?
With around 8,600 kilometers separating Heathrow Airport (LHR) and SFO, your flight will be a long one. Pack wisely to make your journey comfortable. Simple things like warm clothing and some noise-canceling headphones can make a huge difference.
Which airlines fly direct from London Heathrow to SFO?
United Airlines (UA) is one of the preferred choices for travelers jetting between LHR and San Francisco Intl. Airport (SFO). Take your pick of the 60 flights it operates on this route each month. You could also check out the fares on offer with British Airways (BA). This carrier operates 60 flights a month between Hounslow and San Francisco.
Are Heathrow Airport to San Francisco Airport flight tickets cheaper when they're purchased at the last minute?
Flight prices from Heathrow Airport to San Francisco Airport are available up to 12 months prior to departure on Expedia. And although you may pick up a fantastic last-minute deal, it's not something you should bank on. Also, booking your flights ahead of time means you'll have more choices — and you can avoid being wedged in the dreaded middle seat! We're always updating our fares to make sure you get the biggest bargains, so check back often for all the latest specials.

Travel information

Origin airport
Heathrow
Destination airport
San Francisco Intl.
Airlines serving
Air Canada, Air France, American Airlines, Austrian Airlines, British Airways, Delta, Finnair, Lufthansa, Scandinavian Airlines, Singapore Airlines, Turkish Airlines, United, Virgin Atlantic
Return price
HK$4,243
Distance
8567 km
Average flight time
3 hours 13 mins

Book with confidence

Flights from London to San Francisco

Book cheap flights from London (LHR) to San Francisco (SFO) on Expedia.com.hk. Find the best flight deals to destinations around the world for your next leisure or business travel on Expedia.com.hk.

Search for flights from London (LHR) to San Francisco (SFO) to find great flight deals suitable to your travel date and time. Expedia.com.hk flight booking search engine is simple to use and looking for cheap flights is as easy as a click of a mouse or on your mobile devices.

Be assured that you’re seeing the best price guaranteed! Our friendly customer service representatives are here to serve you 24 hours day to provide assistance and answer any questions that you may have about booking your London (LHR) to San Francisco (SFO) trip. Call us at 3077-4857 (direct number - 24 hours day for English).

Save more when combine your San Francisco flight with a hotel for a package deal! Discover additional savings by booking in advance. Now you can find activities in San Francisco and things to do in San Francisco for your perfect vacation with Expedia Thing to Do.

If you would like to book flights to San Francisco more flexibly, many prefer to purchase one-way tickets with options to take different airlines. A one way ticket to San Francisco is HK$3,254 now!

 

Flights from London to San Francisco

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