฿17,130 Cheap Flights from London (LHR) to San Francisco (SFO)

View ฿17,130 flight on Mon, 8 Jun 2026Opens in a new window

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

  • Be in the know

    Get alerts if flight prices drop or rise*

  • Book smarter

    Save up to 40% on select hotels after you book a flight*

  • Earn twice

    Earn your airline miles on top of our rewards
    Sign in

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

Prices were available within the past 7 days and start at ฿17,130 for one-way flights and ฿25,150 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Virgin Atlantic
Fri, 26 Jun - Thu, 9 Jul
LHR
London
SFO
San Francisco
฿25,150 Return, found 6 days ago
฿25,150
Return
found 6 days ago
Select Virgin Atlantic flight, departing Fri, 26 Jun from London to San Francisco, returning Thu, 9 Jul, priced at ฿25,150 found 6 days ago
Finnair
Wed, 8 Jul - Wed, 15 Jul
LHR
London
SFO
San Francisco
฿29,155 Return, just found
฿29,155
Return
just found
Select Finnair flight, departing Wed, 8 Jul from London to San Francisco, returning Wed, 15 Jul, priced at ฿29,155 just found
Austrian Airlines
Wed, 8 Jul - Wed, 15 Jul
LHR
London
SFO
San Francisco
฿30,865 Return, just found
฿30,865
Return
just found
Select Austrian Airlines flight, departing Wed, 8 Jul from London to San Francisco, returning Wed, 15 Jul, priced at ฿30,865 just found
Air Canada
Wed, 8 Jul - Wed, 15 Jul
LHR
London
SFO
San Francisco
฿31,045 Return, just found
฿31,045
Return
just found
Select Air Canada flight, departing Wed, 8 Jul from London to San Francisco, returning Wed, 15 Jul, priced at ฿31,045 just found
American Airlines
Wed, 8 Jul - Wed, 15 Jul
LHR
London
SFO
San Francisco
฿31,435 Return, just found
฿31,435
Return
just found
Select American Airlines flight, departing Wed, 8 Jul from London to San Francisco, returning Wed, 15 Jul, priced at ฿31,435 just found
Finnair
Wed, 8 Jul - Wed, 15 Jul
LHR
London
SFO
San Francisco
฿32,000 Return, just found
฿32,000
Return
just found
Select Finnair flight, departing Wed, 8 Jul from London to San Francisco, returning Wed, 15 Jul, priced at ฿32,000 just found
Lufthansa
Wed, 8 Jul - Wed, 15 Jul
LHR
London
SFO
San Francisco
฿32,425 Return, just found
฿32,425
Return
just found
Select Lufthansa flight, departing Wed, 8 Jul from London to San Francisco, returning Wed, 15 Jul, priced at ฿32,425 just found
American Airlines
Wed, 8 Jul - Wed, 15 Jul
LHR
London
SFO
San Francisco
฿33,530 Return, just found
฿33,530
Return
just found
Select American Airlines flight, departing Wed, 8 Jul from London to San Francisco, returning Wed, 15 Jul, priced at ฿33,530 just found
United
Wed, 8 Jul - Wed, 15 Jul
LHR
London
SFO
San Francisco
฿33,845 Return, just found
฿33,845
Return
just found
Select United flight, departing Wed, 8 Jul from London to San Francisco, returning Wed, 15 Jul, priced at ฿33,845 just found
British Airways
Wed, 8 Jul - Wed, 15 Jul
LHR
London
SFO
San Francisco
฿33,890 Return, just found
฿33,890
Return
just found
Select British Airways flight, departing Wed, 8 Jul from London to San Francisco, returning Wed, 15 Jul, priced at ฿33,890 just found

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

September is typically the cheapest month to fly

From ฿20,557 - ฿27,481 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 ฿25,150. 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.

Travel information

Origin airport
Heathrow
Destination airport
San Francisco Intl.
Airlines serving
Air Canada, Air France, American Airlines, Austrian Airlines, British Airways, Delta, Finnair, ITA Airways, Iberia, KLM, Lufthansa, Singapore Airlines, Swiss International Air Lines, Turkish Airlines, United, WestJet
Return price
฿25,150
Distance
8567 km
Average flight time
3 hours 1 min

Book with confidence

Perfect flights from London to San Francisco

Embark on an unforgettable journey without breaking the bank with Expedia's incredible deals on cheap flights from London to San Francisco. Whether you're aching for a romantic escape with your partner, craving an adventurous solo expedition, or yearning to immerse yourself in the local history and culture, we've got you covered.
 
Picture yourself strolling through the streets of , surrounded by breathtaking architecture and absorbing the vibrant atmosphere of this captivating city. Indulge in the mouth-watering local specialties, from tantalizing street food to exquisite fine dining. With Expedia, you can experience all of this and more, without sacrificing your budget.
 
Our flexible Heathrow to San Francisco Intl. ticket options cater to your travel preferences, with incredible one-way fares from ฿17,130 and roundtrip prices from ฿25,150. Whether you're planning a short city break or a longer adventure, our dynamic pricing ensures that you find the best deals for your journey.
 
But the magic doesn't stop there. Expedia offers a range of partner services to enhance your trip. Rent a car at San Francisco Intl. and explore and its surrounding areas at your own pace. Discover hidden gems off the beaten path, and create unforgettable memories. We also provide a handpicked selection of accommodations, from charming bed and breakfasts to luxury hotels, ensuring that you have a comfortable and memorable stay.
 
Planning your next great adventure is a breeze with Expedia. Our user-friendly platform, unbeatable prices, and round-the-clock customer support are designed to make your travel experience seamless and stress-free. So, why wait? Book your to travel arrangements today and embark on the journey of a lifetime in San Francisco.
Perfect flights from London to San Francisco
*Available to Expedia members.