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Find cheap one-way flights from San Francisco to London starting at US$170.

We've found these cheap flights for you. You can book one-way or round-trip flight tickets.

  • One way
  • Round-trip

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

When is the cheapest time to book flights from San Francisco to London?

We monitor flight fares to help you find the best deals effortlessly

Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.
Cheapest airlines flights from San Francisco to London

Compare prices, find the option that best suits your travel needs, and enjoy a comfortable journey with a trusted airline.

Frontier Airlines
From US$170
Alaska Airlines
From US$186
Delta Air Lines
From US$187
WestJet
From US$194
United Airlines
From US$216
Southwest Airlines
From US$220
Flair Airlines
From US$247
American Airlines
From US$249
Sun Country Airlines
From US$265
Vueling Airlines
From US$283
ANA airlines

Find more flights and airlines

Find cheap flights from San Francisco to London by different airports

Searching for potential routes that might be cheaper and faster? Check out these alternative flights from San Francisco to London.

  • Cheapest
    Frontier Airlines
    SFO
    10:10
    16h 45m
    1 transfer
    LGW
    10:55
    San Francisco International Airport - London Gatwick Airport
    Tue, Apr 30Frontier Airlines
    US$170
  • Frontier Airlines
    SFO
    20:27
    28h 33m
    1 transfer
    LHR
    09:00
    San Francisco International Airport - London Heathrow Airport
    Sat, Apr 13Frontier Airlines
    US$281
  • Alaska Airlines
    SFO
    22:35
    27h 55m
    2 transfer
    STN
    10:30
    San Francisco International Airport - London Stansted Airport
    Wed, Apr 24Alaska Airlines
    US$319
  • Alaska Airlines
    SFO
    22:35
    27h 55m
    2 transfer
    STN
    10:30
    San Francisco International Airport - London Stansted Airport
    Wed, Apr 24Alaska Airlines
    US$319
    Find More Flights

Frequently Asked Questions

  • When are flight tickets from San Francisco (SFO) to London (LON) the cheapest?

    Airlines adjust prices for flights from San Francisco to London based on the departure date and time of your selection. By analyzing data from all airlines, we've discovered that on Trip.com, you can find the lowest flight prices on Tuesdays, Wednesdays, and Saturdays.
  • How much do flights from San Francisco (SFO) to London (LON) cost?

    According to Trip.com's data, the lowest price is around $1,002.
  • How long does it take to fly from San Francisco (SFO) to London (LON) and what is the distance?

    It takes around 10 hours 23 minutes to fly from San Francisco (SFO) to London (LON).
  • What is the transportation method from the main airport to downtown in London?

    • The distance from London Gatwick Airport to downtown is about 39km. It takes about 50 minutes by taxi.
    • The distance from London Heathrow Airport to downtown is about 23km. It takes about 40 minutes by taxi.
    • The distance from London Luton Airport to downtown is about 44km. It takes about 1 hour by taxi.
  • What are the most popular airlines that fly from San Francisco (SFO) to London (LON)?

    Airlines with flights from San Francisco (SFO) to London (LON): Austrian Airlines, Virgin Atlantic, Air France, Swiss Airlines, KLM, Air Canada, Iberia, Aer Lingus, Air New Zealand, Singapore Airlines and Aeromexico.

San Francisco to London Flight Information

Cheapest nonstop flight price

$170

Cheapest round-trip ticket price

$566

Off-season for travel

April

Peak season for travel

September