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

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Compare London Gatwick to San Francisco International flight deals

Find the cheapest month or even day of the year to fly to San Francisco International

Book the best San Francisco International fare with no extra fees

Flight deals from London Gatwick to San Francisco International

Looking for a cheap last-minute deal or the best return flight from London Gatwick to San Francisco International? Find the lowest prices on one-way and return tickets right here.
San Francisco.$840 per passenger.Departing Mon, 20 Oct, returning Wed, 12 Nov.Return flight with TAP Air Portugal.Outbound indirect flight with TAP Air Portugal, departs from London Gatwick on Mon, 20 Oct, arriving in San Francisco International.Inbound indirect flight with TAP Air Portugal, departs from San Francisco International on Wed, 12 Nov, arriving in London Gatwick.Price includes taxes and charges.From $840, select.
San Francisco.$841 per passenger.Departing Tue, 16 Sep, returning Mon, 29 Sep.Return flight with TAP Air Portugal.Outbound indirect flight with TAP Air Portugal, departs from London Gatwick on Tue, 16 Sep, arriving in San Francisco International.Inbound indirect flight with TAP Air Portugal, departs from San Francisco International on Mon, 29 Sep, arriving in London Gatwick.Price includes taxes and charges.From $841, select.
San Francisco.$841 per passenger.Departing Tue, 4 Nov, returning Wed, 3 Dec.Return flight with TAP Air Portugal.Outbound indirect flight with TAP Air Portugal, departs from London Gatwick on Tue, 4 Nov, arriving in San Francisco International.Inbound indirect flight with TAP Air Portugal, departs from San Francisco International on Wed, 3 Dec, arriving in London Gatwick.Price includes taxes and charges.From $841, select.
San Francisco.$841 per passenger.Departing Thu, 5 Feb, returning Mon, 9 Feb.Return flight with TAP Air Portugal.Outbound indirect flight with TAP Air Portugal, departs from London Gatwick on Thu, 5 Feb, arriving in San Francisco International.Inbound indirect flight with TAP Air Portugal, departs from San Francisco International on Mon, 9 Feb, arriving in London Gatwick.Price includes taxes and charges.From $841, select.
San Francisco.$844 per passenger.Departing Mon, 13 Oct, returning Tue, 21 Oct.Return flight with TAP Air Portugal.Outbound indirect flight with TAP Air Portugal, departs from London Gatwick on Mon, 13 Oct, arriving in San Francisco International.Inbound indirect flight with TAP Air Portugal, departs from San Francisco International on Tue, 21 Oct, arriving in London Gatwick.Price includes taxes and charges.From $844, select.
San Francisco.$844 per passenger.Departing Fri, 6 Feb, returning Wed, 4 Mar.Return flight with TAP Air Portugal.Outbound indirect flight with TAP Air Portugal, departs from London Gatwick on Fri, 6 Feb, arriving in San Francisco International.Inbound indirect flight with TAP Air Portugal, departs from San Francisco International on Wed, 4 Mar, arriving in London Gatwick.Price includes taxes and charges.From $844, select.
San Francisco.$845 per passenger.Departing Tue, 3 Mar, returning Wed, 11 Mar.Return flight with TAP Air Portugal.Outbound indirect flight with TAP Air Portugal, departs from London Gatwick on Tue, 3 Mar, arriving in San Francisco International.Inbound indirect flight with TAP Air Portugal, departs from San Francisco International on Wed, 11 Mar, arriving in London Gatwick.Price includes taxes and charges.From $845, select.
San Francisco.$846 per passenger.Departing Thu, 4 Dec, returning Mon, 8 Dec.Return flight with TAP Air Portugal.Outbound indirect flight with TAP Air Portugal, departs from London Gatwick on Thu, 4 Dec, arriving in San Francisco International.Inbound indirect flight with TAP Air Portugal, departs from San Francisco International on Mon, 8 Dec, arriving in London Gatwick.Price includes taxes and charges.From $846, select.

Find the cheapest month to fly from London Gatwick to San Francisco International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like London Gatwick to San Francisco International flights are currently cheapest in September.
May
from $969
Jun
from $864
Jul
from $1,151
Aug
from $1,250
Sep
from $841
Oct
from $844
Nov
from $866
Dec
from $846
Jan
from $855
Feb
from $841
Mar
from $845
Apr
from $1,000

London Gatwick to San Francisco International: Alternative routes

Compare routes from London Gatwick to San Francisco below. You may find an airport to fly into that's cheaper, faster, or easier than San Francisco International.

London to San Francisco: Flight information

The things to know before you go.
Cheapest flight found$840
Cheapest month to flyOctober

Finding cheap flights from London Gatwick to San Francisco International: Frequently asked questions

The best price we found for a return flight from London Gatwick to San Francisco International is $840. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from London Gatwick to San Francisco International. But we found flights with one or more stops from $840.
As of May 2025, there are no flights flying from London Gatwick to San Francisco International.
The cheapest month to fly from London Gatwick to San Francisco International is usually May 2025.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from London Gatwick Airport to San Francisco International Airport on Monday, 20 October 2025.
No airlines currently offer direct flights between London Gatwick Airport and San Francisco International Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to San Francisco International but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to San Francisco is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, TAP Air Portugal offers the cheapest flight tickets to San Francisco International.

Flying from London Gatwick Airport (LGW) to San Francisco International Airport (SFO): what you need to know

  • San Francisco's timezone is UTC-7, which makes San Francisco seven hours behind London.

  • Get to the airport on time so you don't miss your LGW to SFO flight. Be there at least two hours ahead for international flights and an hour early for domestic departures to prevent a last-minute sprint to your gate.

  • Be prepared for longer lines during popular months like August. Arriving up to four hours ahead of an international flight and two hours for domestic departures is a smart move.

  • Think about adding a stopover when booking your ticket from London Gatwick Airport to San Francisco International Airport. Just deselect 'Direct flights only' to break up your trip, or perhaps see a new city along the way. Check out these options between LGW and SFO:

    • Amsterdam Airport Schiphol

    • Dublin Airport

    • Harry Reid Airport (formerly McCarran Airport)

How to find the cheapest flights from London Gatwick Airport (LGW) to San Francisco International Airport (SFO)

  • $456 is currently the best price for a one-way London Gatwick Airport to San Francisco International Airport flight. Return flights start from $840. These fares may change based on availability.

  • To find cheap tickets from LGW to SFO, book early. Airlines generally offer their most competitively priced fares when flights are first made available.

  • If you can be flexible with your travel plans, try using the 'Whole month' search function. It'll give you the cheapest price across each month when looking for a flight from London Gatwick Airport to San Francisco International Airport.

  • Save time looking for cheap flights from LGW to SFO by creating a Price Alert. You'll receive an email or push notification on the app when a new low fare is offered.

  • Tailor your trip with filters. Select your preferred arrival and departure times, airlines and total journey duration. You can also sort your results by 'Best,' 'Cheapest' or 'Fastest' flights from London Gatwick Airport to San Francisco International Airport.

Handy information about London Gatwick Airport (LGW)

  • When it comes to the on-time performance of London Gatwick Airport, 69.26% of flights arrive within the expected timeframe.

  • Central London to London Gatwick Airport is approximately 80 kilometres. Depending on traffic, it'll take you about 1 hour 20 minutes to get there if you're catching a cab, ride-sharing or driving.

  • Expect a trip time of roughly 1 hour 25 minutes when using public transport.

  • Get your travels off to a stress-free start by staying near LGW. Whether you're taking an early flight from London Gatwick Airport to San Francisco International Airport or want to avoid feeling rushed, these hotels have you covered:

Arriving at San Francisco International Airport (SFO)

Getting from San Francisco International Airport (SFO) to central San Francisco

  • San Francisco International Airport to central San Francisco has a drive time of about 20 minutes. It's approximately 21 kilometres away.

  • If you're travelling on public transport, expect a journey of about 45 minutes.

When to fly to San Francisco International Airport (SFO)

  • It's time to choose your trip dates for your flight from London Gatwick Airport to San Francisco International Airport. August is the most popular month to head to San Francisco. If you want a more laid-back vibe, go in February.

  • When reserving your flight from London Gatwick Airport to San Francisco International Airport, consider the type of weather you like. September is the warmest month in San Francisco, with the temperature ranging from 12ºC (54ºF) to 22ºC (72ºF).

  • For cooler conditions, search for a cheap ticket from LGW to SFO in January. Temperatures average between 6ºC (43ºF) and 16ºC (61ºF) then.

Explore more of United States

  • San Francisco is easy to fall in love with, but there are so many other corners of United States just waiting to be discovered. Around 64 kilometres south-east of San Francisco, a trip to San Jose will keep your itinerary packed. Start with leading sights like Winchester Mystery House, Rosicrucian Egyptian Museum and San Jose Museum of Art.

  • Fresno is another sought-after destination in United States and is around 257 kilometres south-east of San Francisco. No journey is complete without visiting Forestiere Underground Gardens, Fresno Chaffee Zoo and Shinzen Japanese Garden.

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Plan the rest of your trip from London to San Francisco

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.