Find flights
Deals
Insights
When to book
FAQs & Tips
Airlines

YXU - SFO

$234 Find cheap flights from London, Ontario to San Francisco

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from London to San Francisco departing on 7/17. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Sat 6/29
Sat 7/6

Search hundreds of travel sites at once for deals on flights to San Francisco

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to San Francisco, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to San Francisco, as well as popular online travel agencies
In the last 7 days travelers have searched 42,686,544 times on KAYAK, and here is why:

Save 21% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Bundle and saveSave money when you bundle your flight + hotel.

Cheap flight deals from London to San Francisco (YXU-SFO)

 
These are the cheapest deals for flights from London to San Francisco currently on KAYAK along with options from the most popular airlines KAYAK users selected for this route. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Recent round-trip flight deals from London to San Francisco

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from London to San Francisco.

Recent one-way flight deals from London to San Francisco

Only flying one-way? Below are some of the best one-way flight deals from London to San Francisco found on KAYAK recently.

Recent last minute flight deals from London to San Francisco

Leaving soon but still want a bargain? Check out these latest deals for last minute flights from London to San Francisco.

Recent direct flight deals from London to San Francisco

The latest deals for direct flights from London to San Francisco so you can sit back and relax without the need for a layover.

Cheap bus & train deals from London to San Francisco

Find recent round-trip train or bus tickets from London to San Francisco.

All round-trip flight deals to San Francisco

The cheapest plane tickets to San Francisco found on KAYAK recently.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
6:15 am - 12:00 pmYXU-SFO
8h 45m1 stop
$234WestJet
Find Deal
Wed, Jul 17
7:10 pm - 9:30 amYXU-SFO
17h 20m1 stop
$236Flair Airlines
Find Deal
Mon, Jul 15
6:15 am - 2:33 pmYXU-SFO
11h 18m2 stops
$239WestJet
Find Deal
Tue, Jul 16
6:00 am - 10:35 amYXU-SFO
7h 35m1 stop
$241Air Canada
Find Deal
Tue, Jul 2
6:00 am - 6:52 pmYXU-SFO
15h 52m2 stops
$246United Airlines
Find Deal
Tue, Jul 2
8:00 pm - 2:33 pmYXU-SFO
21h 33m2 stops
$254WestJet
Find Deal
Mon, Jul 15
8:00 pm - 5:13 pmYXU-SFO
24h 13m1 stop
$261WestJet
Find Deal
Tue, Jul 16
6:15 am - 8:34 pmYXU-SFO
17h 19m2 stops
$275
Find Deal
Sat, Jul 13
6:15 am - 9:30 amYXU-SFO
30h 15m2 stops
$306
Find Deal
Sat, Jun 29
3:20 pm - 9:01 pmYXU-SFO
8h 41m1 stop
$406Air Canada
Find Deal
Sat, Jun 29

Flights from London to San Francisco - Travel Insights & Trends

Get data-powered insights and trends into flights from London to San Francisco to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from London to San Francisco?

The average price of all flights from London, Ontario to San Francisco clicked on KAYAK for each day over the last 12 months.
For London to San Francisco, Saturday is the cheapest day to fly on average and Friday is the most expensive. Flying from San Francisco back to London, the best deals are generally found on Monday, with Tuesday being the most expensive.

What is the cheapest month to fly from London, Ontario to San Francisco?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from London, Ontario to San Francisco, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from London, Ontario to San Francisco is April, where tickets cost $341 on average. On the other hand, the most expensive months are December and March, where the average cost of tickets is $910 and $570 respectively.

Good to know

Low season

February

High season

July

Cheapest flight

$234
Best time to beat the crowds with an average 0% drop in price.
Most popular time to fly with an average 3% increase in price.
Flight from London to San Francisco

When to book flights from London to San Francisco

Are your dates flexible? Find out the best times to travel from London to San Francisco based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from London to San Francisco

  • What is the cheapest flight from London, Ontario to San Francisco?

    In the last 3 days, the lowest price for a flight from London, Ontario to San Francisco was $234 for a one-way ticket.

  • Do I need a passport to fly between London and San Francisco?

    A passport is required to fly from London to San Francisco.

  • Which aircraft models fly most regularly from London to San Francisco?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from London to San Francisco?

    Star Alliance is the only airline alliance operating flights between London and San Francisco.

  • How does KAYAK find such low prices on flights from London to San Francisco?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from London to San Francisco.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from London to San Francisco?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Francisco from London is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from London to San Francisco?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to San Francisco with an airline and back to London with another airline. Booking your flights between London and SFO can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from London to San Francisco?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to San Francisco from London up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top airline flying from London to San Francisco

 
See real verified KAYAK customer reviews for airlines flying from London to San Francisco. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from London to San Francisco? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.0
Air CanadaOverall score based on 7004 reviews
6.8Entertainment
7.2Boarding
7.8Crew
6.2Food
7.0Comfort
Airline reviews

Moderate size plane, not completely full, easy boarding, some rows with just 2 seats so a couple can have a row to themselves

10.0 ExcellentAnonymous, May 2024YUL - SFO
Read more about Air Canada reviews

Moderate size plane, not completely full, easy boarding, some rows with just 2 seats so a couple can have a row to themselves

The experience was generally above average. The only downside was the absence of WiFi during my flight from Vancouver to San Francisco.

Once again my complaint is how close the seats are together. Also, the bathrooms were not very clean by the second half of the flight.

Excellent in flight service, perhaps the best we've ever had. Business class feels tired and needs improvement to compete with other airlines. The food looked good but tasted terrible. Check in was quick, the flight arrived early and our luggage was on our flight with us.

Terrible quality wifi and they charge a lot for it. They nickel and dime you for everything.

It took 5 hour to get a crew to D Ice the plan. We had to sit on the runway for 5 hrs. in Calgary. It snows most of the winter. No proactive plan. In addition, after 3 calls to customer service they couldn't figure out how to have my wife and myself sit together on her birthday weekend. Everybody kept passing the buck. No decision from customer service, luggage drop off or check in team. The experience was a complete mess! I don't think we'll ever fly on this airline again.

Of our SIX flights in my travel group, five were delayed, and all (except possibly one) were just company screwups. One traveler had her CARRY ON baggage put on another flight because Air Canada could not properly do "weight and Balance". Bags missing for a day. Another traveler never made it. Then, (humor here) the flagship airline of the socialist country has NOTHING FOR FREE on board. Expect to pay for pretzels, folks. How's that socialism working out for ya, aye? I might book air Canada in the future if I have a meeting that I REALLY want to MISS!

I don’t know if there were any snacks served on the 5 hour flight. I might have been napping when the attendants came around. But I usually wake up when they do.

Food offerings need to be more plentiful and beverages need to be more healthy.

First My Flight was Delayed for Over 3HRS, I missed My Older Sister's Funeral, My Car Rentals I Missed it, Had to take Uber from the Airport and then to Rentals Next Day

Book cheap flights from London to San Francisco

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from London to San Francisco found on KAYAK in the last 72 hours.
7/17Wed
1 stopWestJet
8h 45mYXU-SFO
$234
7/15Mon
1 stopFlair Airlines
17h 20mYXU-SFO
$236
7/16Tue
2 stopsWestJet
11h 18mYXU-SFO
$239
7/2Tue
1 stopAir Canada
7h 35mYXU-SFO
$241
7/2Tue
2 stopsUnited Airlines
15h 52mYXU-SFO
$246
7/15Mon
2 stopsWestJet
21h 33mYXU-SFO
$254
7/16Tue
1 stopWestJet
24h 13mYXU-SFO
$261
7/13Sat
2 stops
17h 19mYXU-SFO
$275
6/29Sat
2 stops
30h 15mYXU-SFO
$306
6/29Sat
1 stopAir Canada
8h 41mYXU-SFO
$406

Search by stops

Search by airline

Search by price

London - San Francisco Flights

Departure:

London (YXU)Canada

Destination:

San Francisco (SFO)United States

Return flight deals:

San Francisco - London

Cabin classes:

Browse origins:

Browse destinations: