$236 Cheap Flights from San Francisco (SFO) to London (LGW)

View $236 flight on Tue, Oct 21, 2025Opens in a new window

Popular airlines from San Francisco Intl. Airport (SFO) to Gatwick Airport (LGW)

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Cheap Flights from San Francisco to London (SFO-LGW)

Prices were available within the past 7 days and start at $236 for one-way flights and $446 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

TAP Portugal
Mon, Feb 2 - Tue, Feb 10
SFO
San Francisco
LGW
London
$446 Roundtrip, found 4 hours ago
$446
Roundtrip
found 4 hours ago
Select TAP Portugal flight, departing Mon, Feb 2 from San Francisco to London, returning Tue, Feb 10, priced at $446 found 4 hours ago
TAP Portugal
Mon, Nov 3 - Tue, Nov 18
SFO
San Francisco
LGW
London
$452 Roundtrip, found 10 hours ago
$452
Roundtrip
found 10 hours ago
Select TAP Portugal flight, departing Mon, Nov 3 from San Francisco to London, returning Tue, Nov 18, priced at $452 found 10 hours ago
TAP Portugal
Sat, Nov 8 - Tue, Nov 18
SFO
San Francisco
LGW
London
$453 Roundtrip, found 4 hours ago
$453
Roundtrip
found 4 hours ago
Select TAP Portugal flight, departing Sat, Nov 8 from San Francisco to London, returning Tue, Nov 18, priced at $453 found 4 hours ago
TAP Portugal
Mon, Nov 3 - Tue, Nov 18
SFO
San Francisco
LGW
London
$460 Roundtrip, found 1 day ago
$460
Roundtrip
found 1 day ago
Select TAP Portugal flight, departing Mon, Nov 3 from San Francisco to London, returning Tue, Nov 18, priced at $460 found 1 day ago
TAP Portugal
Thu, May 7 - Thu, May 21
SFO
San Francisco
LGW
London
$468 Roundtrip, found 11 hours ago
$468
Roundtrip
found 11 hours ago
Select TAP Portugal flight, departing Thu, May 7 from San Francisco to London, returning Thu, May 21, priced at $468 found 11 hours ago
TAP Portugal
Tue, Apr 21 - Thu, Apr 30
SFO
San Francisco
LGW
London
$475 Roundtrip, found 1 day ago
$475
Roundtrip
found 1 day ago
Select TAP Portugal flight, departing Tue, Apr 21 from San Francisco to London, returning Thu, Apr 30, priced at $475 found 1 day ago
American Airlines
Mon, Feb 2 - Tue, Feb 10
SFO
San Francisco
LGW
London
$576 Roundtrip, found 4 hours ago
$576
Roundtrip
found 4 hours ago
Select American Airlines flight, departing Mon, Feb 2 from San Francisco to London, returning Tue, Feb 10, priced at $576 found 4 hours ago
Iberia
Mon, Feb 2 - Tue, Feb 10
SFO
San Francisco
LGW
London
$590 Roundtrip, found 4 hours ago
$590
Roundtrip
found 4 hours ago
Select Iberia flight, departing Mon, Feb 2 from San Francisco to London, returning Tue, Feb 10, priced at $590 found 4 hours ago
British Airways
Mon, Feb 2 - Tue, Feb 10
SFO
San Francisco
LGW
London
$597 Roundtrip, found 4 hours ago
$597
Roundtrip
found 4 hours ago
Select British Airways flight, departing Mon, Feb 2 from San Francisco to London, returning Tue, Feb 10, priced at $597 found 4 hours ago
Swiss International Air Lines
Wed, Dec 31 - Tue, Jan 13
SFO
San Francisco
LGW
London
$610 Roundtrip, found 1 day ago
$610
Roundtrip
found 1 day ago
Select Swiss International Air Lines flight, departing Wed, Dec 31 from San Francisco to London, returning Tue, Jan 13, priced at $610 found 1 day ago

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

September is typically the cheapest month to fly

From $456 - $974 per traveler.

Alternative airports near London

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Heathrow LHR. Cheapest option available. Average driving time to city center is 28 minutes. Flights from $651
LHR
Heathrow
Cheapest
Average driving time to city center28 min
Flights from $651
Select flight to London City LCY. Closest option available. Average driving time to city center is 21 minutes. Flights from $1,325
LCY
London City
Closest
Average driving time to city center21 min
Flights from $1,325

Frequently asked questions

How much does a flight from San Francisco Intl. Airport (SFO) to Gatwick Airport (LGW) cost?
Lock in a cheap one-way flight from $236 or cheap return flight from $446 from San Francisco Intl. Airport (SFO) to Gatwick Airport (LGW) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from San Francisco Intl. Airport (SFO) to Gatwick Airport (LGW)?
February is the least expensive month to fly from SFO to LGW. Traveling during an off-peak travel window is often the key to finding better fares.
What is the cheapest airline that flies from San Francisco Intl. Airport (SFO) to Gatwick Airport (LGW)?
To find the cheapest airline flying from SFO to LGW, use Expedia's filter tool. Customize your search based on your travel needs, such as preferred carriers and number of stops. You can then sort your results by "Price (lowest to highest)" to discover the cheapest flight right away.
How many flights per day from San Francisco Intl. Airport (SFO) to Gatwick Airport (LGW)?
There are no daily nonstop flights available from San Francisco Intl. Airport (SFO) to Gatwick Airport (LGW). But you can book flights with layovers. Filter your search on Expedia to include one or two stops, and you'll be cruising above the clouds before you know it.
What day of the week has the most flights from SFO to LGW?
You'll usually find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can change from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from San Francisco Intl. Airport (SFO) to Gatwick Airport (LGW)?
Book a flight from San Francisco Intl. Airport (SFO) to Gatwick Airport (LGW) that leaves before 3 PM to reduce the risk of cancellations. Departures later than this have a 22% higher chance of being canceled, on average.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for London from San Francisco Intl. Airport (SFO)?
Explore your flight options from San Francisco Intl. Airport (SFO) to Heathrow Airport (LHR). This is the only airport in London you can jet into if you're taking a direct flight.
Is it cheaper to buy a plane ticket from San Francisco Intl. Airport (SFO) to Gatwick Airport (LGW) last-minute?
Waiting until right before your break to book your flight from SFO to LGW generally means paying more. While you may come across some last-minute discounts, they aren't always guaranteed. Allow some flexibility in your schedule to maximize your chances of getting a bargain.
Is it cheaper to book a SFO to LGW flight and hotel package?
You can save money by securing a SFO to LGW flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's easy to manage it all in one place. Once you've selected your ideal flights and accommodations, consider other add-ons like tours, activities and car rentals.
Can I cancel or change the date of my flight from San Francisco Intl. Airport (SFO) to Gatwick Airport (LGW)?
If you booked your SFO to LGW flight in the last 24 hours, you may be able to modify or cancel it at no cost. Depending on the airline and the fare type you purchased, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, visit our Customer Service portal for more information.

Travel information

Origin airport
San Francisco Intl.
Destination airport
Gatwick
Airlines serving
Air Europa, American Airlines, British Airways, Iberia, Icelandair, JetBlue Airways, Royal Air Maroc, Singapore Airlines, Swiss International Air Lines, TAP Portugal, Turkish Airlines
Roundtrip price
$446
Distance
5378 mi

Book with confidence

San Francisco to London Flights

The cheapest times to fly from San Francisco to London

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from San Francisco to London are during the month of February. You can find some of the cheapest flights from San Francisco to London with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from San Francisco to London

Sunday is one of the best days to book for cheap flights from San Francisco to London: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from San Francisco to London

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from San Francisco to London in 2025. You can also book with separate airlines for your outbound and return journeys, from $236 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap San Francisco to London flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your San Francisco to London airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

San Francisco to London Flights

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