S$336 Cheap Flights from San Francisco to London

View S$336 flight on Sun, 18 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$336 for one-way flights and S$686 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Scandinavian Airlines
Fri, 30 Jan - Mon, 2 Feb
SFO
San Francisco
LHR
London
S$686 Return, found 6 days ago
S$686
Return
found 6 days ago
Select Scandinavian Airlines flight, departing Fri, 30 Jan from San Francisco to London, returning Mon, 2 Feb, priced at S$686 found 6 days ago
Scandinavian Airlines
Fri, 30 Jan - Mon, 2 Feb
SFO
San Francisco
LHR
London
S$746 Return, found 6 days ago
S$746
Return
found 6 days ago
Select Scandinavian Airlines flight, departing Fri, 30 Jan from San Francisco to London, returning Mon, 2 Feb, priced at S$746 found 6 days ago
Scandinavian Airlines
Fri, 30 Jan - Mon, 2 Feb
SFO
San Francisco
LHR
London
S$764 Return, found 6 days ago
S$764
Return
found 6 days ago
Select Scandinavian Airlines flight, departing Fri, 30 Jan from San Francisco to London, returning Mon, 2 Feb, priced at S$764 found 6 days ago
United
Mon, 12 Jan - Tue, 27 Jan
SFO
San Francisco
LHR
London
S$809 Return, found 5 days ago
S$809
Return
found 5 days ago
Select United flight, departing Mon, 12 Jan from San Francisco to London, returning Tue, 27 Jan, priced at S$809 found 5 days ago
Virgin Atlantic
Mon, 12 Jan - Tue, 27 Jan
SFO
San Francisco
LHR
London
S$814 Return, found 5 days ago
S$814
Return
found 5 days ago
Select Virgin Atlantic flight, departing Mon, 12 Jan from San Francisco to London, returning Tue, 27 Jan, priced at S$814 found 5 days ago
Air Canada
Mon, 12 Jan - Tue, 27 Jan
SFO
San Francisco
LHR
London
S$842 Return, found 5 days ago
S$842
Return
found 5 days ago
Select Air Canada flight, departing Mon, 12 Jan from San Francisco to London, returning Tue, 27 Jan, priced at S$842 found 5 days ago
United
Wed, 12 Aug - Wed, 19 Aug
SFO
San Francisco
LHR
London
S$857 Return, found 23 hours ago
S$857
Return
found 23 hours ago
Select United flight, departing Wed, 12 Aug from San Francisco to London, returning Wed, 19 Aug, priced at S$857 found 23 hours ago
Lufthansa
Wed, 12 Aug - Wed, 19 Aug
SFO
San Francisco
LHR
London
S$858 Return, found 23 hours ago
S$858
Return
found 23 hours ago
Select Lufthansa flight, departing Wed, 12 Aug from San Francisco to London, returning Wed, 19 Aug, priced at S$858 found 23 hours ago
British Airways
Mon, 12 Jan - Tue, 27 Jan
SFO
San Francisco
LHR
London
S$874 Return, found 5 days ago
S$874
Return
found 5 days ago
Select British Airways flight, departing Mon, 12 Jan from San Francisco to London, returning Tue, 27 Jan, priced at S$874 found 5 days ago
Austrian Airlines
Wed, 12 Aug - Wed, 19 Aug
SFO
San Francisco
LHR
London
S$882 Return, found 23 hours ago
S$882
Return
found 23 hours ago
Select Austrian Airlines flight, departing Wed, 12 Aug from San Francisco to London, returning Wed, 19 Aug, priced at S$882 found 23 hours ago

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

January is typically the cheapest month to fly

From S$583 - S$1,276 per traveller.
San Francisco to London route information
Origin airport
San Francisco Intl.
Destination airport
Heathrow
Airlines serving
Air Canada, Air France, American Airlines, Austrian Airlines, British Airways, Delta, Finnair, KLM, LOT-Polish Airlines, Lufthansa, Scandinavian Airlines, Singapore Airlines, Swiss International Air Lines, Turkish Airlines, United, Virgin Atlantic, WestJet
Return price
S$685
Distance
8567 km
Average flight time
18 hours 28 mins

Perfect flights from San Francisco to London

Your Journey from San Francisco to London

Start your unforgettable journey with Expedia. Our broad selection of flights from San Francisco to London caters to every travel need. Whether you're yearning for a romantic escape, a solo adventure, or a cultural immersion, we've got you covered.
 

Choosing Your Ideal Flight

With Expedia, you have access to a wide range of airlines, including WestJet, Delta, United, Virgin Atlantic, Air Canada, British Airways, Scandinavian Airlines, Lufthansa, Austrian Airlines. Our selection of flights from San Francisco Intl. to Heathrow caters to every traveler's requirements, ensuring your journey aligns with your schedule. With options from 20 airlines, you're bound to find the perfect flight.
 

Maximizing Value with San Francisco to London Flights

Experience the joy of finding cheap flights from San Francisco Intl. to Heathrow that fit your budget. Keep an eye out for our special deals and discounts, and check our flexible one-way fares from S$336 and roundtrip prices from S$686*.
 

Pre-Flight Essentials

Ensure a smooth journey from San Francisco to London with Expedia. From information about check-in times and in-flight amenities to guidance on baggage policies, we provide all the essentials to prepare you for your flight.
 

Experience the Vibrant London

Picture yourself stepping off the plane in London and immersing yourself in the unique atmosphere of . From local markets to cultural festivals, each city offers its distinct charm. Make the most of your trip by exploring local attractions and indulging in the local cuisine. With Expedia, explore all this and more, tailored to your budget.
 

Added Convenience on Your San Francisco to London Flight

Traveling with Expedia is more than just a flight. We offer details about in-flight amenities, baggage policies, and more to ensure a smooth and hassle-free journey. Choose from our variety of airlines and embark on a memorable journey from San Francisco to London.
 

Beyond the Flight – Exploring London

With Expedia, your adventure extends beyond the flight. Explore London at your own pace by renting a car or booking a hotel. Discover hidden gems off the beaten path and create unforgettable memories.
 

Book Your Flight from San Francisco to London with Confidence

Planning your next great adventure is a breeze with Expedia. Our user-friendly platform, unbeatable prices, and round-the-clock customer support make your travel experience seamless and stress-free. Embark on your journey from San Francisco to London with confidence. Book your travel arrangements with Expedia today.
 
*Note: Prices may vary based on availability and are subject to change.

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$686. 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.

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