S$799 Cheap Flights from London to San Francisco

View S$799 flight on Fri, 29 Aug, 2025Opens 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$799 for one-way flights and S$713 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Swiss International Air Lines
Tue, 7 Oct - Sat, 11 Oct
LHR
London
SFO
San Francisco
S$713 Return, found 3 days ago
S$713
Return
found 3 days ago
Select Swiss International Air Lines flight, departing Tue, 7 Oct from London to San Francisco, returning Sat, 11 Oct, priced at S$713 found 3 days ago
Lufthansa
Tue, 7 Oct - Sat, 11 Oct
LHR
London
SFO
San Francisco
S$721 Return, found 3 days ago
S$721
Return
found 3 days ago
Select Lufthansa flight, departing Tue, 7 Oct from London to San Francisco, returning Sat, 11 Oct, priced at S$721 found 3 days ago
Air Canada
Tue, 7 Oct - Sat, 11 Oct
LHR
London
SFO
San Francisco
S$729 Return, found 3 days ago
S$729
Return
found 3 days ago
Select Air Canada flight, departing Tue, 7 Oct from London to San Francisco, returning Sat, 11 Oct, priced at S$729 found 3 days ago
Swiss International Air Lines
Tue, 7 Oct - Sat, 11 Oct
LHR
London
SFO
San Francisco
S$746 Return, found 3 days ago
S$746
Return
found 3 days ago
Select Swiss International Air Lines flight, departing Tue, 7 Oct from London to San Francisco, returning Sat, 11 Oct, priced at S$746 found 3 days ago
Swiss International Air Lines
Tue, 7 Oct - Sat, 11 Oct
LHR
London
SFO
San Francisco
S$749 Return, found 3 days ago
S$749
Return
found 3 days ago
Select Swiss International Air Lines flight, departing Tue, 7 Oct from London to San Francisco, returning Sat, 11 Oct, priced at S$749 found 3 days ago
Lufthansa
Tue, 7 Oct - Sat, 11 Oct
LHR
London
SFO
San Francisco
S$754 Return, found 3 days ago
S$754
Return
found 3 days ago
Select Lufthansa flight, departing Tue, 7 Oct from London to San Francisco, returning Sat, 11 Oct, priced at S$754 found 3 days ago
Lufthansa
Tue, 7 Oct - Sat, 11 Oct
LHR
London
SFO
San Francisco
S$757 Return, found 3 days ago
S$757
Return
found 3 days ago
Select Lufthansa flight, departing Tue, 7 Oct from London to San Francisco, returning Sat, 11 Oct, priced at S$757 found 3 days ago
United
Tue, 7 Oct - Sat, 11 Oct
LHR
London
SFO
San Francisco
S$759 Return, found 3 days ago
S$759
Return
found 3 days ago
Select United flight, departing Tue, 7 Oct from London to San Francisco, returning Sat, 11 Oct, priced at S$759 found 3 days ago
Austrian Airlines
Tue, 7 Oct - Sat, 11 Oct
LHR
London
SFO
San Francisco
S$792 Return, found 3 days ago
S$792
Return
found 3 days ago
Select Austrian Airlines flight, departing Tue, 7 Oct from London to San Francisco, returning Sat, 11 Oct, priced at S$792 found 3 days ago
Virgin Atlantic
Tue, 7 Oct - Sat, 11 Oct
LHR
London
SFO
San Francisco
S$818 Return, found 3 days ago
S$818
Return
found 3 days ago
Select Virgin Atlantic flight, departing Tue, 7 Oct from London to San Francisco, returning Sat, 11 Oct, priced at S$818 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$596 - S$1,216 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, Swiss International Air Lines, Turkish Airlines, United, Virgin Atlantic, WestJet
Return price
S$713
Distance
8567 km
Average flight time
3 hours 2 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 Swiss International Air Lines, Lufthansa, Air Canada, United, Austrian Airlines, Iberia, WestJet, Virgin Atlantic, KLM, Air France, Delta. 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$799 and roundtrip prices from S$713*.
 

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$713. 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

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