S$363 Cheap Flights from San Francisco to London

View S$363 flight on Thu, 29 Jan, 2026Opens in a new window

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

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

Prices were available within the past 7 days and start at S$363 for one-way flights and S$706 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Scandinavian Airlines
Fri, 20 Feb - Fri, 27 Feb
SFO
San Francisco
LHR
London
S$706 Return, found 2 days ago
S$706
Return
found 2 days ago
Select Scandinavian Airlines flight, departing Fri, 20 Feb from San Francisco to London, returning Fri, 27 Feb, priced at S$706 found 2 days ago
Scandinavian Airlines
Thu, 19 Feb - Wed, 25 Feb
SFO
San Francisco
LHR
London
S$709 Return, found 5 days ago
S$709
Return
found 5 days ago
Select Scandinavian Airlines flight, departing Thu, 19 Feb from San Francisco to London, returning Wed, 25 Feb, priced at S$709 found 5 days ago
Scandinavian Airlines
Fri, 6 Mar - Fri, 13 Mar
SFO
San Francisco
LHR
London
S$711 Return, found 2 days ago
S$711
Return
found 2 days ago
Select Scandinavian Airlines flight, departing Fri, 6 Mar from San Francisco to London, returning Fri, 13 Mar, priced at S$711 found 2 days ago
Virgin Atlantic
Wed, 18 Mar - Tue, 24 Mar
SFO
San Francisco
LHR
London
S$759 Return, found 3 days ago
S$759
Return
found 3 days ago
Select Virgin Atlantic flight, departing Wed, 18 Mar from San Francisco to London, returning Tue, 24 Mar, priced at S$759 found 3 days ago
British Airways
Wed, 18 Mar - Wed, 25 Mar
SFO
San Francisco
LHR
London
S$763 Return, found 3 days ago
S$763
Return
found 3 days ago
Select British Airways flight, departing Wed, 18 Mar from San Francisco to London, returning Wed, 25 Mar, priced at S$763 found 3 days ago
Virgin Atlantic
Sun, 1 Feb - Wed, 18 Feb
SFO
San Francisco
LHR
London
S$766 Return, found 3 days ago
S$766
Return
found 3 days ago
Select Virgin Atlantic flight, departing Sun, 1 Feb from San Francisco to London, returning Wed, 18 Feb, priced at S$766 found 3 days ago
Delta
Fri, 20 Feb - Fri, 27 Feb
SFO
San Francisco
LHR
London
S$792 Return, found 2 days ago
S$792
Return
found 2 days ago
Select Delta flight, departing Fri, 20 Feb from San Francisco to London, returning Fri, 27 Feb, priced at S$792 found 2 days ago
United
Wed, 11 Mar - Mon, 23 Mar
SFO
San Francisco
LHR
London
S$794 Return, found 3 days ago
S$794
Return
found 3 days ago
Select United flight, departing Wed, 11 Mar from San Francisco to London, returning Mon, 23 Mar, priced at S$794 found 3 days ago
Swiss International Air Lines
Sun, 18 Jan - Tue, 3 Feb
SFO
San Francisco
LHR
London
S$829 Return, found 1 day ago
S$829
Return
found 1 day ago
Select Swiss International Air Lines flight, departing Sun, 18 Jan from San Francisco to London, returning Tue, 3 Feb, priced at S$829 found 1 day ago
Lufthansa
Sat, 21 Mar - Tue, 31 Mar
SFO
San Francisco
LHR
London
S$832 Return, found 4 days ago
S$832
Return
found 4 days ago
Select Lufthansa flight, departing Sat, 21 Mar from San Francisco to London, returning Tue, 31 Mar, priced at S$832 found 4 days ago

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

February is typically the cheapest month to fly

From S$578 - S$1,043 per traveller.

Alternative airports near London

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Heathrow LHR. Cheapest option available. Average driving time to city centre is 28 minutes. Flights from S$795
LHR
Heathrow
Cheapest
Average driving time to city centre28 min
Flights from S$795

Frequently asked questions

How much is a flight from San Francisco Intl. Airport (SFO) to Heathrow Airport?
Round-trip tickets from San Francisco Intl. Airport (SFO) to London Heathrow start from S$706. This is based on fares offered within the last 7 days on Expedia for flights departing within the next year — make your booking ASAP to avoid missing out. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from San Francisco Intl. Airport (SFO) to LHR?
Most flights can be cancelled online, but each air carrier has different 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 SFO to London Heathrow 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 San Francisco Intl. Airport (SFO) to Heathrow Airport (LHR) flights, you'll see a "no change fees" filter for you to select.
How far is the flight from SFO to LHR?
San Francisco to Hounslow is around 8,600 kilometres, so get ready to spend a while in the air. Don't forget to pack all the essentials, from your headphones to your hoodie. Take some snacks to munch on throughout your flight too.
Which airlines fly direct from SFO to London Heathrow?
A popular airline that flies from SFO to LHR is United Airlines (UA). It offers 60 flights a month. After some more options? Check out the airfares with British Airways (BA). This carrier offers 60 monthly flights between these airports.
Are San Francisco Airport to Heathrow Airport flight tickets cheaper when they're purchased at the last minute?
Last-minute bookings from San Francisco Intl. Airport (SFO) to London Heathrow can be hit-or-miss. You may be able to score a great bargain, but you could also miss out completely! If you'd prefer to play it safe and start planning your trip early on, Expedia compares flight deals up to a year in advance. Just remember that not all airlines advertise their prices so far in advance. Our advice? Check back often as updates are made frequently.

Travel information

Origin airport
San Francisco Intl.
Destination airport
Heathrow
Airlines serving
Air Canada, Air France, American Airlines, Austrian Airlines, British Airways, Brussels Airlines, Delta, Finnair, KLM, Lufthansa, Scandinavian Airlines, Singapore Airlines, Swiss International Air Lines, Turkish Airlines, United, Virgin Atlantic, WestJet
Return price
S$706
Distance
8567 km
Average flight time
18 hours 28 mins

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Perfect flights from San Francisco to London

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*Note: Prices may vary based on availability and are subject to change.
Perfect flights from San Francisco to London

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