A spacious airport terminal with a high ceiling and natural light.

฿16,130 Cheap Flights from London (LHR) to San Francisco (SFO)

View ฿16,130 flight on Sat, 5 Dec 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 ฿16,130 for one-way flights and ฿20,250 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Mon, 23 Nov - Mon, 30 Nov
LHR
London
SFO
San Francisco
฿20,250 Return, found 1 day ago
฿20,250
Return
found 1 day ago
Select Delta flight, departing Mon, 23 Nov from London to San Francisco, returning Mon, 30 Nov, priced at ฿20,250 found 1 day ago
TAP Portugal
Fri, 20 Nov - Fri, 27 Nov
LHR
London
SFO
San Francisco
฿20,305 Return, found 3 days ago
฿20,305
Return
found 3 days ago
Select TAP Portugal flight, departing Fri, 20 Nov from London to San Francisco, returning Fri, 27 Nov, priced at ฿20,305 found 3 days ago
Virgin Atlantic
Mon, 23 Nov - Mon, 30 Nov
LHR
London
SFO
San Francisco
฿20,630 Return, found 1 day ago
฿20,630
Return
found 1 day ago
Select Virgin Atlantic flight, departing Mon, 23 Nov from London to San Francisco, returning Mon, 30 Nov, priced at ฿20,630 found 1 day ago
KLM
Mon, 23 Nov - Mon, 30 Nov
LHR
London
SFO
San Francisco
฿21,935 Return, found 1 day ago
฿21,935
Return
found 1 day ago
Select KLM flight, departing Mon, 23 Nov from London to San Francisco, returning Mon, 30 Nov, priced at ฿21,935 found 1 day ago
Air France
Mon, 23 Nov - Mon, 30 Nov
LHR
London
SFO
San Francisco
฿22,160 Return, found 1 day ago
฿22,160
Return
found 1 day ago
Select Air France flight, departing Mon, 23 Nov from London to San Francisco, returning Mon, 30 Nov, priced at ฿22,160 found 1 day ago
Finnair
Fri, 20 Nov - Fri, 27 Nov
LHR
London
SFO
San Francisco
฿22,465 Return, found 3 days ago
฿22,465
Return
found 3 days ago
Select Finnair flight, departing Fri, 20 Nov from London to San Francisco, returning Fri, 27 Nov, priced at ฿22,465 found 3 days ago
Lufthansa
Mon, 2 Nov - Sun, 8 Nov
LHR
London
SFO
San Francisco
฿23,965 Return, found 22 hours ago
฿23,965
Return
found 22 hours ago
Select Lufthansa flight, departing Mon, 2 Nov from London to San Francisco, returning Sun, 8 Nov, priced at ฿23,965 found 22 hours ago
Scandinavian Airlines
Thu, 8 Oct - Mon, 12 Oct
LHR
London
SFO
San Francisco
฿24,015 Return, found 4 days ago
฿24,015
Return
found 4 days ago
Select Scandinavian Airlines flight, departing Thu, 8 Oct from London to San Francisco, returning Mon, 12 Oct, priced at ฿24,015 found 4 days ago
United
Tue, 8 Sept - Sat, 12 Sept
LHR
London
SFO
San Francisco
฿24,175 Return, found 21 hours ago
฿24,175
Return
found 21 hours ago
Select United flight, departing Tue, 8 Sept from London to San Francisco, returning Sat, 12 Sept, priced at ฿24,175 found 21 hours ago
Air Canada
Mon, 2 Nov - Sun, 8 Nov
LHR
London
SFO
San Francisco
฿24,265 Return, found 22 hours ago
฿24,265
Return
found 22 hours ago
Select Air Canada flight, departing Mon, 2 Nov from London to San Francisco, returning Sun, 8 Nov, priced at ฿24,265 found 22 hours ago

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

October is typically the cheapest month to fly

From ฿17,893 - ฿19,623 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 ฿20,250. 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

0
Origin airport
Heathrow
Destination airport
San Francisco Intl.
Airlines serving
Aeromexico, Air Canada, Air France, American Airlines, Austrian Airlines, British Airways, Delta, Finnair, Iberia, Icelandair, KLM, Lufthansa, Scandinavian Airlines, Singapore Airlines, Swiss International Air Lines, TAP Portugal, Turkish Airlines, United, WestJet
Roundtrip price
฿20,250
Distance
8567 km

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 ฿16,130 and roundtrip prices from ฿20,250. 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.