S$700 Cheap Flights from London to San Francisco

View S$700 flight on Mon, 9 Feb, 2026Opens in a new window

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

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

Prices were available within the past 7 days and start at S$700 for one-way flights and S$685 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Virgin Atlantic
Mon, 29 Sep - Mon, 13 Oct
LHR
London
SFO
San Francisco
S$685 Return, found 4 days ago
S$685
Return
found 4 days ago
Select Virgin Atlantic flight, departing Mon, 29 Sep from London to San Francisco, returning Mon, 13 Oct, priced at S$685 found 4 days ago
Virgin Atlantic
Mon, 29 Sep - Mon, 13 Oct
LHR
London
SFO
San Francisco
S$685 Return, found 4 days ago
S$685
Return
found 4 days ago
Select Virgin Atlantic flight, departing Mon, 29 Sep from London to San Francisco, returning Mon, 13 Oct, priced at S$685 found 4 days ago
Delta
Mon, 29 Sep - Mon, 13 Oct
LHR
London
SFO
San Francisco
S$685 Return, found 4 days ago
S$685
Return
found 4 days ago
Select Delta flight, departing Mon, 29 Sep from London to San Francisco, returning Mon, 13 Oct, priced at S$685 found 4 days ago
Virgin Atlantic
Tue, 25 Nov - Tue, 2 Dec
LHR
London
SFO
San Francisco
S$685 Return, found 1 day ago
S$685
Return
found 1 day ago
Select Virgin Atlantic flight, departing Tue, 25 Nov from London to San Francisco, returning Tue, 2 Dec, priced at S$685 found 1 day ago
Virgin Atlantic
Thu, 11 Sep - Wed, 17 Sep
LHR
London
SFO
San Francisco
S$691 Return, found 3 days ago
S$691
Return
found 3 days ago
Select Virgin Atlantic flight, departing Thu, 11 Sep from London to San Francisco, returning Wed, 17 Sep, priced at S$691 found 3 days ago
American Airlines
Tue, 16 Sep - Sun, 21 Sep
LHR
London
SFO
San Francisco
S$714 Return, found 3 days ago
S$714
Return
found 3 days ago
Select American Airlines flight, departing Tue, 16 Sep from London to San Francisco, returning Sun, 21 Sep, priced at S$714 found 3 days ago
KLM
Mon, 29 Sep - Mon, 13 Oct
LHR
London
SFO
San Francisco
S$754 Return, found 4 days ago
S$754
Return
found 4 days ago
Select KLM flight, departing Mon, 29 Sep from London to San Francisco, returning Mon, 13 Oct, priced at S$754 found 4 days ago
Air France
Mon, 29 Sep - Mon, 13 Oct
LHR
London
SFO
San Francisco
S$754 Return, found 4 days ago
S$754
Return
found 4 days ago
Select Air France flight, departing Mon, 29 Sep from London to San Francisco, returning Mon, 13 Oct, priced at S$754 found 4 days ago
British Airways
Fri, 26 Sep - Mon, 29 Sep
LHR
London
SFO
San Francisco
S$760 Return, found 20 hours ago
S$760
Return
found 20 hours ago
Select British Airways flight, departing Fri, 26 Sep from London to San Francisco, returning Mon, 29 Sep, priced at S$760 found 20 hours ago
Finnair
Sat, 13 Sep - Sat, 20 Sep
LHR
London
SFO
San Francisco
S$767 Return, found 3 days ago
S$767
Return
found 3 days ago
Select Finnair flight, departing Sat, 13 Sep from London to San Francisco, returning Sat, 20 Sep, priced at S$767 found 3 days ago

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

January is typically the cheapest month to fly

From S$598 - S$1,232 per traveller.

Graph displaying average flight prices per month

London to San Francisco route information
Origin airport
Heathrow
Destination airport
San Francisco Intl.
Airlines serving
Aer Lingus, Air Canada, Air France, American Airlines, Austrian Airlines, British Airways, Delta, Finnair, Iberia, KLM, Lufthansa, Singapore Airlines, Swiss International Air Lines, Turkish Airlines, United, Virgin Atlantic, WestJet
Return price
S$684
Distance
8567 km
Average flight time
3 hours 4 mins

Perfect flights from London to San Francisco

Your Journey from London to San Francisco

Start your unforgettable journey with Expedia. Our broad selection of flights from London to San Francisco 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 Virgin Atlantic, Delta, WestJet, American Airlines, Lufthansa, KLM, Air France, British Airways, Finnair, Air Canada, United. Our selection of flights from Heathrow to San Francisco Intl. 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 London to San Francisco Flights

Experience the joy of finding cheap flights from Heathrow to San Francisco Intl. that fit your budget. Keep an eye out for our special deals and discounts, and check our flexible one-way fares from S$700 and roundtrip prices from S$685*.
 

Pre-Flight Essentials

Ensure a smooth journey from London to San Francisco 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 San Francisco

Picture yourself stepping off the plane in San Francisco and immersing yourself in the unique atmosphere of San Francisco. 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 London to San Francisco 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 London to San Francisco.
 

Beyond the Flight – Exploring San Francisco

With Expedia, your adventure extends beyond the flight. Explore San Francisco 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 London to San Francisco 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 London to San Francisco 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 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 S$685. 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 cancelled 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 kilometres 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-cancelling 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 travellers 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.

Explore a world of travel with Expedia

San Francisco Airports

San Jose

London to Norman Y. Mineta San Jose Intl.
S$721.10
London Airports

London

*Available to Expedia members.