CA $317 Cheap Flights from San Francisco (SFO) to London (LHR)

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 CA $317 for one-way flights and CA $622 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

TAP Portugal
Scandinavian Airlines
Aer Lingus
United
Air France
British Airways
Air Canada
American Airlines
Delta
Swiss International Air Lines

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

January is typically the cheapest month to fly

From CA $620 - CA $1,329 per traveller.

Graph displaying average flight prices per month

Flight from San Francisco to London (SFO - LHR) route information
Origin airport
San Francisco Intl.
Destination airport
Heathrow
Airlines serving
Aer Lingus, Air Canada, Alaska Airlines, American Airlines, Austrian Airlines, British Airways, Brussels Airlines, Delta, Finnair, Iberia, Icelandair, JetBlue Airways, Lufthansa, Scandinavian Airlines, Singapore Airlines, Swiss International Air Lines, TAP Portugal, Turkish Airlines, United, Virgin Atlantic
Roundtrip price
CA $621
Distance
8567 km
Average flight time
18 hours 22 mins

San Francisco to London Flights

The easy way to book your flights from San Francisco to London 

With Expedia, it’s simple to find and book flights to London from San Francisco whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from 20 airlines that cover this route. There are nonstop flights to Heathrow, too.  

Choose your preferred carrier and cabin class with the advanced search tool and select your ideal departure time. Then, if you want, you can see just nonstop or refundable flights. And if you’re traveling last minute, just enter the date to check out flights from San Francisco to London today, tomorrow, or this week.  

 

Save dollars with cheap flights from San Francisco Intl., SFO to Heathrow, LHR 

Sort your search results by price to find great deals on your flight from San Francisco to London—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to London from San Francisco currently is just CA $622 rising to CA $880.  

Here are more money-saving tips: 

  • Fly in January when flight prices are normally at their lowest 
  • Book about a month to 6 weeks before you travel for the best prices to London  
  • Avoid peak season and weekends when flights can cost more
  • Early morning and late-night flights are sometimes cheaper, so try varying your travel times 
  • One surefire way to save money on your flight is to book your flight and hotel together with Expedia. Sometimes, the savings are so large that the flight is basically free! 

 

Reasons to choose Expedia for your flight to London from San Francisco 

Whatever your destination, budget, or reason to travel, in just one quick search, you can choose from loads of flights, airlines, and cabin classes. The filters make it quick and easy to find your ideal flights, and if you choose one of the flexible options, you won’t be charged to change your flight. So book your flight to London with Expedia today.

Frequently asked questions

How much is a flight from San Francisco Airport to Heathrow Airport (LHR)?
Start packing your suitcase, because round-trip flights from San Francisco Airport to LHR start from CA $622. That's based on fares advertised within the last 7 days on Expedia for flights departing within the next year. Prices can rise quickly, so book today to lock in the best deal. 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 Airport to LHR?
We get that things crop up unexpectedly, so we've made it as simple as possible for you to cancel your trip online. Just visit the Customer Service Portal and follow the instructions.
How do I find cheap flights from San Francisco Airport to Heathrow Airport that have flexible change policies?
Flights from San Francisco Airport to Heathrow Airport (LHR) with flexible change policies are available from several airlines. Simply use our "No change fees" filter while searching. You'll only need to cover the cost difference between flights, without any added fees to worry about.
How many hours is the flight from San Francisco Airport to London Heathrow?
Averaging 10 hours and 29 minutes, the journey from SFO to London Heathrow is a long one. To make your trip more enjoyable, remember to bring a good neck pillow and a set of earplugs.
How far is the flight from San Francisco Airport to LHR?
The distance is around 8,600 kilometres, so pack your carry-on luggage with everything you need to make your journey comfortable. Not sure what to take on board your San Francisco to Hounslow flight? Earplugs, a sleep mask and a neck pillow are among the essentials.
Which airlines fly direct from San Francisco Intl. Airport (SFO) to Heathrow Airport (LHR)?
With 60 flights every month from San Francisco Airport to Heathrow Airport (LHR), United Airlines (UA) is a top choice. You could also take a look at the fares on offer with British Airways (BA). This carrier operates 47 monthly flights between San Francisco and Hounslow.
Are San Francisco Intl. Airport (SFO) to London Heathrow flight tickets cheaper when they're purchased at the last minute?
Late planners can sometimes score a bargain, with some super cheap fares from San Francisco Airport to Heathrow Airport (LHR) appearing a few weeks before the date of departure. If you'd rather plan ahead, Expedia compares and updates the best flight deals frequently — as early as 12 months in advance in some cases. It does depend on the carrier though, as not all airlines advertise prices that far in advance.

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