$169+ Cheap flights from London, ON (YXU) to San Francisco (SFO)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/9. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — SFO
Oct 7 — Oct 141
Round-trip
1 adult, Economy
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Find cheap flights from London to San Francisco with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from London to San Francisco
Cheapest
Best
Last-minute
One-way
Cheapest flights from London to San FranciscoExplore the most affordable flight options available from London to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 7, 2026.
Explore the most affordable flight options available from London to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 7, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/226:10 am -
1 stop8h 50m
Thu 10/16:00 am -
1 stop7h 45m
Deal found 9/3![WestJet logo]()
$252
This Kiwi.com deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/226:10 am -
1 stop8h 50m
Sat 10/31:00 pm -
1 stop13h 20m
Deal found 9/3![WestJet logo]()
$284
This Air Canada deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/299:15 am -
1 stop9h 25m
Sat 10/318:25 am -
1 stop8h 27m
Deal found 9/3![Air Canada logo]()
$295
This Kiwi.com deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/226:10 am -
1 stop8h 50m
Mon 10/54:21 pm -
2 stops33h 59m
Deal found 9/3![Multiple Airlines logo]()
$311
This Trip.com deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/25:55 pm -
1 stop21h 05m
Tue 10/66:00 am -
1 stop20h 20m
Deal found 9/2![WestJet logo]()
$315
This Air Canada deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/216:20 pm -
1 stop7h 44m
Tue 10/68:30 am -
1 stop8h 10m
Deal found 9/3![Air Canada logo]()
$325
This Kiwi.com deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/236:10 am -
1 stop8h 50m
Wed 9/306:05 pm -
1 stop8h 15m
Deal found 9/3![WestJet logo]()
$330
This WestJet deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure WestJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/215:55 pm -
1 stop21h 05m
Wed 9/306:05 pm -
1 stop8h 15m
Deal found 9/3![WestJet logo]()
$335
This Kiwi.com deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/226:10 am -
1 stop8h 50m
Tue 10/611:40 am -
2 stops14h 40m
Deal found 9/3![Multiple Airlines logo]()
$343
This Air Canada deal was found by Cheapflights users on 9/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/26:20 pm -
2 stops19h 00m
Tue 10/611:35 am -
1 stop7h 05m
Deal found 9/1![Air Canada logo]()
$346
Best flights from London to San FranciscoDiscover carefully curated flight deals from London to San Francisco that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 7, 2026.
Discover carefully curated flight deals from London to San Francisco that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 7, 2026.
This Air Canada deal was found by Cheapflights users on 9/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/26:20 pm -
2 stops19h 00m
Tue 10/611:35 am -
1 stop7h 05m
Deal found 9/1![Air Canada logo]()
$346
This United Airlines deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/103:30 pm -
2 stops20h 05m
Mon 10/1210:51 pm -
1 stop7h 29m
Deal found 9/3![United Airlines logo]()
$418
This Air Canada deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/298:30 pm -
2 stops20h 21m
Sat 10/318:25 am -
2 stops22h 12m
Deal found 9/5![Air Canada logo]()
$384
This United Airlines deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/263:30 pm -
1 stop8h 29m
Sun 10/410:51 pm -
1 stop7h 29m
Deal found 9/3![United Airlines logo]()
$427
This United Airlines deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/245:40 am -
1 stop8h 04m
Mon 10/510:51 pm -
1 stop7h 29m
Deal found 9/3![United Airlines logo]()
$427
This United Airlines deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/2510:05 am -
1 stop8h 19m
Mon 10/510:51 pm -
1 stop7h 29m
Deal found 9/3![United Airlines logo]()
$427
This United Airlines deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/265:40 am -
1 stop9h 54m
Mon 10/510:51 pm -
1 stop7h 29m
Deal found 9/3![United Airlines logo]()
$427
This United Airlines deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/243:30 pm -
2 stops12h 29m
Sat 10/35:00 am -
2 stops9h 43m
Deal found 9/3![United Airlines logo]()
$433
This United Airlines deal was found by Cheapflights users on 9/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/303:30 pm -
2 stops10h 21m
Tue 10/612:35 am -
2 stops11h 15m
Deal found 9/1![United Airlines logo]()
$434
Last-minute flights from London to San FranciscoDiscover last-minute flight deals from London to San Francisco. Data last updated September 7, 2026 and is based on user searches.
Discover last-minute flight deals from London to San Francisco. Data last updated September 7, 2026 and is based on user searches.
This Air Canada deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/216:20 pm -
1 stop7h 44m
Tue 10/68:30 am -
1 stop8h 10m
Deal found 9/3![Air Canada logo]()
$325
This WestJet deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure WestJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/215:55 pm -
1 stop21h 05m
Wed 9/306:05 pm -
1 stop8h 15m
Deal found 9/3![WestJet logo]()
$335
This Kiwi.com deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/226:10 am -
1 stop8h 50m
Thu 10/16:00 am -
1 stop7h 45m
Deal found 9/3![WestJet logo]()
$252
This Kiwi.com deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/226:10 am -
1 stop8h 50m
Sat 10/31:00 pm -
1 stop13h 20m
Deal found 9/3![WestJet logo]()
$284
This Kiwi.com deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/226:10 am -
1 stop8h 50m
Mon 10/54:21 pm -
2 stops33h 59m
Deal found 9/3![Multiple Airlines logo]()
$311
This Kiwi.com deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/226:10 am -
1 stop8h 50m
Tue 10/611:40 am -
2 stops14h 40m
Deal found 9/3![Multiple Airlines logo]()
$343
This Kiwi.com deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/236:10 am -
1 stop8h 50m
Wed 9/306:05 pm -
1 stop8h 15m
Deal found 9/3![WestJet logo]()
$330
This Trip.com deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/25:55 pm -
1 stop21h 05m
Tue 10/66:00 am -
1 stop20h 20m
Deal found 9/2![WestJet logo]()
$315
This Air Canada deal was found by Cheapflights users on 9/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/26:20 pm -
2 stops19h 00m
Tue 10/611:35 am -
1 stop7h 05m
Deal found 9/1![Air Canada logo]()
$346
This Air Canada deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/299:15 am -
1 stop9h 25m
Sat 10/318:25 am -
1 stop8h 27m
Deal found 9/3![Air Canada logo]()
$295
One-way flights from London to San FranciscoSearch for one-way flight options from London to San Francisco. Find affordable one-way fares based on user searches. Data last updated September 7, 2026.
Search for one-way flight options from London to San Francisco. Find affordable one-way fares based on user searches. Data last updated September 7, 2026.
This Air Canada deal was found by Cheapflights users on 9/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/99:15 am -
1 stop9h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![Air Canada logo]()
$169
This Trip.com deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/116:10 am -
1 stop18h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![WestJet logo]()
$176
This Air Canada deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/113:30 pm -
1 stop8h 29m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![Air Canada logo]()
$186
This Delta deal was found by Cheapflights users on 9/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/176:10 am -
1 stop8h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/3![Delta logo]()
$203
This Kiwi.com deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/116:10 am -
2 stops36h 23m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![Multiple Airlines logo]()
$214
This Kiwi.com deal was found by Cheapflights users on 9/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/176:10 am -
2 stops17h 28m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/4![Multiple Airlines logo]()
$229
This United Airlines deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/103:30 pm -
2 stops19h 11m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![United Airlines logo]()
$234
This United Airlines deal was found by Cheapflights users on 9/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/115:40 am -
1 stop8h 04m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![United Airlines logo]()
$242
Find flight deals from London to San Francisco
Discover tips and strategies to find the most affordable flight options for your journey from London (YXU) to San Francisco (SFO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 7, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $252 (Kiwi.com) |
One-way from | $169 (Air Canada) |
Popular in | September |
Cheapest in | January |
Average price | $1,184 |
Cheapflights Fare Finder
Customize your flight search to find flights from London to San Francisco that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 7, 2026.
Use the filters below to find and compare flights from London to San Francisco that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
LondonSan Francisco
YXU London - SFO San Francisco
YXUSFO
London
Fri 9/11
3:30 pm-8:59 pm
1 stop8h 29m
San Francisco
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$186
LondonSan Francisco
YXU London - SFO San Francisco
YXUSFO
London
Sat 10/17
6:10 am-12:00 pm
1 stop8h 50m
San Francisco
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$211
LondonSan Francisco
YXU London - SFO San Francisco
YXUSFO
London
Sun 10/18
6:10 am-12:00 pm
1 stop8h 50m
San Francisco
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$211
LondonSan Francisco
YXU London - SFO San Francisco
YXUSFO
London
Fri 9/11
6:10 am-8:14 am
3 stops29h 04m
San Francisco
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$225
LondonSan Francisco
YXU London - SFO San Francisco
YXUSFO
London
Sat 10/10
3:30 pm-7:41 am
2 stops19h 11m
San Francisco
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$234
LondonSan Francisco
YXU London - SFO San Francisco
YXUSFO
London
Sat 10/17
10:05 am-9:26 pm
2 stops14h 21m
San Francisco
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$234
LondonSan Francisco
YXU London - SFO San Francisco
YXUSFO
London
Mon 11/9
5:30 am-2:42 pm
2 stops12h 12m
San Francisco
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$234
Quickest round-trip
LondonSan Francisco
YXU London - SFO San Francisco
YXUSFO
London
Fri 9/11
5:40 am-10:44 am
1 stop8h 04m
San Francisco
Wed 12/31
12:00 am-3:00 am
Nonstop0h 00m
$242
LondonSan Francisco
YXU London - SFO San Francisco
YXUSFO
London
Fri 10/2
6:20 pm-10:20 am
2 stops19h 00m
San Francisco
Tue 10/6
11:35 am-9:40 pm
1 stop7h 05m
$346
LondonSan Francisco
YXU London - SFO San Francisco
YXUSFO
London
Thu 10/29
8:30 pm-1:51 pm
2 stops20h 21m
San Francisco
Sat 10/31
8:25 am-9:37 am
2 stops22h 12m
$384
Showing 1-10 of 17 resultsSorted by cheapest first
Compare providers for flights from London to San Francisco
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from London to San Francisco in September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on London, Ontario-San Francisco flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on London, Ontario-San Francisco flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from London, Ontario-San Francisco flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on London, Ontario-San Francisco flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for London, Ontario-San Francisco flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from London to San Francisco
Have a flexible travel schedule? Discover the best time to fly to San Francisco from London with our price prediction graph.
YXU-SFO
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Related info for your journey
Find useful and relevant information for your journey from London to San Francisco. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near San Francisco?
Book flights to San Francisco if you plan to visit one of these locationsSouth San Francisco
Santa Clara
Santa Cruz
Walnut Creek
Emeryville
San Bruno
Burlingame
Rancho Cordova
Roseville
Fairfield
Vallejo
Cupertino
Newark
Hayward
San Ramon
Redwood City
Manteca
San Carlos
Turlock
Davis
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