฿12,170 Cheap Flights from San Francisco (SFO) to London (LHR)

View ฿12,170 flight on Sun, 25 Jan 2026Opens in a new window

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

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

Prices were available within the past 7 days and start at ฿12,170 for one-way flights and ฿16,305 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

TAP Portugal
Thu, 30 Apr - Mon, 4 May
SFO
San Francisco
LHR
London
฿16,305 Return, found 10 hours ago
฿16,305
Return
found 10 hours ago
Select TAP Portugal flight, departing Thu, 30 Apr from San Francisco to London, returning Mon, 4 May, priced at ฿16,305 found 10 hours ago
TAP Portugal
Fri, 20 Mar - Mon, 30 Mar
SFO
San Francisco
LHR
London
฿18,975 Return, found 4 days ago
฿18,975
Return
found 4 days ago
Select TAP Portugal flight, departing Fri, 20 Mar from San Francisco to London, returning Mon, 30 Mar, priced at ฿18,975 found 4 days ago
British Airways
Sun, 25 Jan - Mon, 16 Feb
SFO
San Francisco
LHR
London
฿19,140 Return, found 4 days ago
฿19,140
Return
found 4 days ago
Select British Airways flight, departing Sun, 25 Jan from San Francisco to London, returning Mon, 16 Feb, priced at ฿19,140 found 4 days ago
British Airways
Sun, 26 Apr - Fri, 15 May
SFO
San Francisco
LHR
London
฿19,265 Return, found 9 hours ago
฿19,265
Return
found 9 hours ago
Select British Airways flight, departing Sun, 26 Apr from San Francisco to London, returning Fri, 15 May, priced at ฿19,265 found 9 hours ago
United
Wed, 11 Feb - Mon, 23 Feb
SFO
San Francisco
LHR
London
฿19,465 Return, found 5 days ago
฿19,465
Return
found 5 days ago
Select United flight, departing Wed, 11 Feb from San Francisco to London, returning Mon, 23 Feb, priced at ฿19,465 found 5 days ago
Delta
Sat, 24 Jan - Thu, 5 Mar
SFO
San Francisco
LHR
London
฿19,490 Return, found 6 days ago
฿19,490
Return
found 6 days ago
Select Delta flight, departing Sat, 24 Jan from San Francisco to London, returning Thu, 5 Mar, priced at ฿19,490 found 6 days ago
Delta
Wed, 11 Feb - Mon, 23 Feb
SFO
San Francisco
LHR
London
฿20,355 Return, found 5 days ago
฿20,355
Return
found 5 days ago
Select Delta flight, departing Wed, 11 Feb from San Francisco to London, returning Mon, 23 Feb, priced at ฿20,355 found 5 days ago
Air Canada
Sat, 24 Jan - Thu, 5 Mar
SFO
San Francisco
LHR
London
฿20,355 Return, found 6 days ago
฿20,355
Return
found 6 days ago
Select Air Canada flight, departing Sat, 24 Jan from San Francisco to London, returning Thu, 5 Mar, priced at ฿20,355 found 6 days ago
Swiss International Air Lines
Mon, 19 Jan - Tue, 3 Feb
SFO
San Francisco
LHR
London
฿20,520 Return, found 6 days ago
฿20,520
Return
found 6 days ago
Select Swiss International Air Lines flight, departing Mon, 19 Jan from San Francisco to London, returning Tue, 3 Feb, priced at ฿20,520 found 6 days ago
Lufthansa
Wed, 11 Feb - Mon, 23 Feb
SFO
San Francisco
LHR
London
฿20,750 Return, found 5 days ago
฿20,750
Return
found 5 days ago
Select Lufthansa flight, departing Wed, 11 Feb from San Francisco to London, returning Mon, 23 Feb, priced at ฿20,750 found 5 days ago
Flight from 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, ITA Airways, Iberia, Icelandair, KLM, Lufthansa, Swiss International Air Lines, TAP Portugal, Turkish Airlines, United, WestJet
Return price
฿16,305
Distance
8567 km
Average flight time
18 hours 28 mins

Perfect flights from San Francisco to London

Embark on an unforgettable journey without breaking the bank with Expedia's incredible deals on cheap flights from San Francisco to London. 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 San Francisco Intl. to Heathrow ticket options cater to your travel preferences, with incredible one-way fares from ฿12,170 and roundtrip prices from ฿16,305. 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 Heathrow 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 London.

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 ฿16,305. 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.
*Available to Expedia members.