$309+ Cheap flights from San Diego (SAN) to London, ON (YXU)
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 10/16. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — YXU
Oct 2 — Oct 91
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from San Diego to London 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 San Diego to London
Cheapest
Best
Last-minute
Cheapest flights from San Diego to LondonExplore the most affordable flight options available from San Diego to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 2, 2026.
Explore the most affordable flight options available from San Diego to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 2, 2026.
This SmartFares 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/163:30 pm -
1 stop10h 50m
Fri 10/236:10 am -
1 stop11h 00m
Deal found 9/1![WestJet logo]()
$309
This Air Canada deal was found by Cheapflights users on 8/31. 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.
Tue 9/291:10 pm -
1 stop17h 10m
Sat 10/35:40 am -
2 stops17h 56m
Deal found 8/31![Air Canada logo]()
$445
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/163:30 pm -
1 stop10h 50m
Fri 10/236:10 am -
2 stops34h 06m
Deal found 9/1![Multiple Airlines logo]()
$452
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 10/166:40 am -
2 stops12h 00m
Fri 10/235:40 am -
2 stops13h 20m
Deal found 9/1![Air Canada logo]()
$473
This WestJet deal was found by Cheapflights users on 8/31. 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.
Tue 9/293:30 pm -
1 stop10h 50m
Sat 10/36:10 am -
1 stop11h 00m
Deal found 8/31![WestJet logo]()
$487
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.
Fri 10/166:40 am -
2 stops12h 00m
Fri 10/2310:05 am -
3 stops13h 40m
Deal found 9/1![United Airlines logo]()
$489
This United Airlines deal was found by Cheapflights users on 8/27. 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.
Tue 9/296:28 pm -
2 stops11h 52m
Sat 10/35:40 am -
2 stops13h 14m
Deal found 8/27![United Airlines logo]()
$562
This Kiwi.com deal was found by Cheapflights users on 8/28. 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.
Mon 10/126:25 am -
2 stops19h 55m
Mon 10/196:10 am -
1 stop11h 00m
Deal found 8/28![Multiple Airlines logo]()
$585
Best flights from San Diego to LondonDiscover carefully curated flight deals from San Diego to London that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 2, 2026.
Discover carefully curated flight deals from San Diego to London that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 2, 2026.
This SmartFares 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/163:30 pm -
1 stop10h 50m
Fri 10/236:10 am -
1 stop11h 00m
Deal found 9/1![WestJet logo]()
$309
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/163:30 pm -
1 stop10h 50m
Fri 10/236:10 am -
2 stops34h 06m
Deal found 9/1![Multiple Airlines logo]()
$452
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 10/166:40 am -
2 stops12h 00m
Fri 10/235:40 am -
2 stops13h 20m
Deal found 9/1![Air Canada logo]()
$473
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.
Fri 10/166:40 am -
2 stops12h 00m
Fri 10/2310:05 am -
3 stops13h 40m
Deal found 9/1![United Airlines logo]()
$489
This WestJet deal was found by Cheapflights users on 8/31. 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.
Tue 9/293:30 pm -
1 stop10h 50m
Sat 10/36:10 am -
1 stop11h 00m
Deal found 8/31![WestJet logo]()
$487
This United Airlines deal was found by Cheapflights users on 8/27. 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.
Tue 9/296:28 pm -
2 stops11h 52m
Sat 10/35:40 am -
2 stops13h 14m
Deal found 8/27![United Airlines logo]()
$562
This Air Canada deal was found by Cheapflights users on 8/29. 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.
Tue 9/291:10 pm -
1 stop17h 10m
Sat 10/35:40 am -
2 stops17h 56m
Deal found 8/29![Air Canada logo]()
$572
This United Airlines deal was found by Cheapflights users on 8/29. 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 10/296:20 am -
2 stops12h 32m
Sun 11/15:30 am -
2 stops13h 24m
Deal found 8/29![United Airlines logo]()
$610
Last-minute flights from San Diego to LondonDiscover last-minute flight deals from San Diego to London. Data last updated September 2, 2026 and is based on user searches.
Discover last-minute flight deals from San Diego to London. Data last updated September 2, 2026 and is based on user searches.
This Air Canada deal was found by Cheapflights users on 8/31. 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.
Tue 9/291:10 pm -
1 stop17h 10m
Sat 10/35:40 am -
2 stops17h 56m
Deal found 8/31![Air Canada logo]()
$445
This WestJet deal was found by Cheapflights users on 8/31. 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.
Tue 9/293:30 pm -
1 stop10h 50m
Sat 10/36:10 am -
1 stop11h 00m
Deal found 8/31![WestJet logo]()
$487
This United Airlines deal was found by Cheapflights users on 8/27. 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.
Tue 9/296:28 pm -
2 stops11h 52m
Sat 10/35:40 am -
2 stops13h 14m
Deal found 8/27![United Airlines logo]()
$562
This Kiwi.com deal was found by Cheapflights users on 8/28. 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.
Mon 10/126:25 am -
2 stops19h 55m
Mon 10/196:10 am -
1 stop11h 00m
Deal found 8/28![Multiple Airlines logo]()
$585
This SmartFares 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/163:30 pm -
1 stop10h 50m
Fri 10/236:10 am -
1 stop11h 00m
Deal found 9/1![WestJet logo]()
$309
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/163:30 pm -
1 stop10h 50m
Fri 10/236:10 am -
2 stops34h 06m
Deal found 9/1![Multiple Airlines logo]()
$452
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 10/166:40 am -
2 stops12h 00m
Fri 10/235:40 am -
2 stops13h 20m
Deal found 9/1![Air Canada logo]()
$473
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.
Fri 10/166:40 am -
2 stops12h 00m
Fri 10/2310:05 am -
3 stops13h 40m
Deal found 9/1![United Airlines logo]()
$489
Find flight deals from San Diego to London
Discover tips and strategies to find the most affordable flight options for your journey from San Diego (SAN) to London (YXU). 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 2, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $309 (SmartFares) |
Cheapflights Fare Finder
Customize your flight search to find flights from San Diego to London 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 2, 2026.
Use the filters below to find and compare flights from San Diego to London that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
San DiegoLondon
SAN San Diego - YXU London
SANYXU
San Diego
Fri 10/16
3:30 pm-5:20 am
1 stop10h 50m
London
Fri 10/23
6:10 am-2:10 pm
1 stop11h 00m
$309
San DiegoLondon
SAN San Diego - YXU London
SANYXU
San Diego
Fri 10/16
3:30 pm-5:20 am
1 stop10h 50m
London
Fri 10/23
6:10 am-1:16 pm
2 stops34h 06m
$452
San DiegoLondon
SAN San Diego - YXU London
SANYXU
San Diego
Fri 10/16
6:40 am-9:40 pm
2 stops12h 00m
London
Fri 10/23
5:40 am-4:00 pm
2 stops13h 20m
$473
San DiegoLondon
SAN San Diego - YXU London
SANYXU
San Diego
Tue 9/29
3:30 pm-5:20 am
1 stop10h 50m
London
Sat 10/3
6:10 am-2:10 pm
1 stop11h 00m
$487
San DiegoLondon
SAN San Diego - YXU London
SANYXU
San Diego
Fri 10/16
6:40 am-9:40 pm
2 stops12h 00m
London
Fri 10/23
10:05 am-8:45 pm
3 stops13h 40m
$489
San DiegoLondon
SAN San Diego - YXU London
SANYXU
San Diego
Tue 9/29
6:28 pm-9:20 am
2 stops11h 52m
London
Sat 10/3
5:40 am-3:54 pm
2 stops13h 14m
$562
San DiegoLondon
SAN San Diego - YXU London
SANYXU
San Diego
Tue 9/29
1:10 pm-9:20 am
1 stop17h 10m
London
Sat 10/3
5:40 am-8:36 pm
2 stops17h 56m
$572
San DiegoLondon
SAN San Diego - YXU London
SANYXU
San Diego
Thu 10/29
6:20 am-9:52 pm
2 stops12h 32m
London
Sun 11/1
5:30 am-3:54 pm
2 stops13h 24m
$610
Sorted by cheapest first
- Most accurate provider: When it comes to deals on San Diego-London, Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Diego-London, Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San Diego-London, Ontario flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on San Diego-London, Ontario 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 San Diego-London, Ontario 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 San Diego to London
Have a flexible travel schedule? Discover the best time to fly to London from San Diego with our price prediction graph.
SAN-YXU
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 San Diego to London. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
London flight routes
Other flight options
Other flights from San Diego
Popular flights