C$377 Cheap Flights from London (YXU) to San Francisco International (SFO)

Compare London to San Francisco International flight deals

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

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Flight deals from London to San Francisco International

Looking for a cheap last-minute deal or the best return flight from London Airport to San Francisco International Airport? If you want to travel next month, return fares start from C$433. Find the lowest prices on one-way and return tickets right here.

San Francisco.C$208 per passenger.Departing Sun., Sep. 27.One-way flight with WestJet.Outbound indirect flight with WestJet, departs from London on Sun., Sep. 27, arriving in San Francisco International.Price includes taxes and charges.From C$208, select.

San Francisco.C$238 per passenger.Departing Fri., Jun. 12.One-way flight with WestJet.Outbound indirect flight with WestJet, departs from London on Fri., Jun. 12, arriving in San Francisco International.Price includes taxes and charges.From C$238, select.

San Francisco.C$395 per passenger.Departing Wed., Jul. 8.One-way flight with WestJet.Outbound indirect flight with WestJet, departs from London on Wed., Jul. 8, arriving in San Francisco International.Price includes taxes and charges.From C$395, select.

San Francisco.C$409 per passenger.Departing Thu., May 28.One-way flight with Air Canada.Outbound indirect flight with Air Canada, departs from London on Thu., May 28, arriving in San Francisco International.Price includes taxes and charges.From C$409, select.

Find the cheapest month to fly from London 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 to San Francisco International flights are currently cheapest in September.

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London to San Francisco International: Alternative routes

Compare routes from London 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	C$208
Cheapest month to fly	September

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

How much are return flights from London to San Francisco International?

The best price we found for a return flight from London to San Francisco International is C$377. 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.

Which airlines fly direct from London to San Francisco International?

Currently, there are no airlines that fly direct from London to San Francisco International. But we found flights with one or more stops from C$377.

How many flights are there a week from London to San Francisco International?

As of May 2026, there are no flights flying from London to San Francisco International.

When is the cheapest time to fly from London to San Francisco International?

The cheapest month to fly from London to San Francisco International is usually July.

Which upcoming date is cheapest to fly from London Airport to San Francisco International Airport on?

After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from London Airport to San Francisco International Airport on Thursday, July 23, 2026.

Can I get a direct flight from London Airport to San Francisco International Airport?

No airlines currently offer direct flights between London Airport and San Francisco International Airport. Most routes have one or more stops.

How can I find the best flight deal to San Francisco International?

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.

When is the best time to book flights to San Francisco?

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.

Which is the cheapest airline to fly from London Airport to San Francisco International with?

Currently, WestJet offers the cheapest flight tickets to San Francisco International.

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

Popular months like August or vacation periods such as spring break and Christmas will mean bigger waits at check-in and security. Be on the safe side and get to the airport even earlier. Arriving two hours before domestic flights and up four hours ahead of an international flight is wise.
Remember, you may need a visa to enter United States. Visa regulations can vary and travel documentation requirements often change. Before locking in your cheap ticket from YXU to SFO, check with your airline and your destination country's local embassy or consulate for the most up-to-date information.

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

C$208 is the lowest price for a one-way ticket from London International Airport to San Francisco International Airport. A return flight starts at C$377. These prices can change based on demand.
To find cheap flight tickets from YXU to SFO, book as early as possible. Airlines tend to offer the most competitive fares when flights are first made available.
Getting cheap flight tickets from London International Airport to San Francisco International Airport is easy if you're flexible with your trip dates. Try using the 'Whole month' search tool to see the best prices across each month and land a great deal.
Getting a cheap ticket from YXU to SFO is a breeze with Price Alerts. All you need to do is set up one of these automatic alerts and we'll notify you as soon as there's a better deal.
Tailor your flights with filters. Select your preferred arrival and departure times, total journey duration and airlines. You can also sort the results by 'Fastest,' 'Best' or 'Cheapest' flights from London International Airport to San Francisco International Airport.

Handy information about London International Airport (YXU)

Located around 11 kilometres from the center of London, London International Airport can be reached in approximately 19 minutes by car (depending on traffic). The ride on public transport will take roughly 53 minutes.
Want an easy start to your vacation? Stay near YXU. Whether you're on an early flight from London International Airport to San Francisco International Airport or just don't like being rushed, these hotels have you covered:

Arriving at San Francisco International Airport (SFO)

Consider booking a hotel close to SFO if you're catching a late flight from London International Airport to San Francisco International Airport. Select one of these options and skip the long transfer:

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

From San Francisco International Airport, San Francisco is approximately 21 kilometres away. It takes around 20 minutes to get to the center driving.
Getting there on public transport will take you roughly 47 minutes.

When to fly to San Francisco International Airport (SFO)

It's time to work out your dates for your flight from London International Airport to San Francisco International Airport. August is the busiest month to visit San Francisco. If you like a more peaceful vibe, go in February.
Book your flight from London International Airport to San Francisco International Airport for September if you'd like to go to San Francisco during its warmest month. Expect temperatures of between 12ºC and 22ºC.
January has average temperatures of between 6ºC and 16ºC. Search for cheap flight tickets from YXU to SFO sometime then if you want to travel in cooler conditions.

More about San Francisco

As soon as you've locked in your flights from YXU to SFO, you'll need to find a place to stay in San Francisco. Make one of these accommodation options your base for exploring this exciting destination:
Golden Gate Bridge and Alcatraz Island are just the start of the top-rated attractions to put on your San Francisco travel itinerary. Continue your sightseeing adventures at Lombard Street.

Complete your San Francisco trip with hotels and a car rental

You've locked in your cheap ticket to San Francisco International Airport — next on the list is finding a great stay, and maybe even your own set of wheels. We've compared prices across hundreds of companies to bring you the best hotels and car rental deals in San Francisco.