HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
London

$454+ 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 6/22. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — YXU
Mar 25 — Apr 11
Wed 3/25
Wed 4/1
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 flights from San Diego to London
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 February 23, 2026.

This oojo deal was found by Cheapflights users on 2/23. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/223:30 pm
SAN
-
YXU
2 stops20h 15m
WestJet
Mon 6/296:10 am
YXU
-
SAN
1 stop11h 00m
WestJet
Deal found 2/23$454
This Air Canada deal was found by Cheapflights users on 2/23. 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 4/91:10 pm
SAN
-
YXU
1 stop16h 33m
Air Canada
Thu 4/165:10 am
YXU
-
SAN
1 stop9h 43m
Air Canada
Deal found 2/23$505
This Air Canada deal was found by Cheapflights users on 2/21. 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 4/71:10 pm
SAN
-
YXU
1 stop16h 33m
Air Canada
Tue 4/145:10 am
YXU
-
SAN
1 stop9h 43m
Air Canada
Deal found 2/21$573
This Air Canada deal was found by Cheapflights users on 2/23. 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 6/227:00 am
SAN
-
YXU
2 stops11h 37m
Air Canada
Mon 6/299:30 am
YXU
-
SAN
2 stops12h 02m
Air Canada
Deal found 2/23$580
This United Airlines deal was found by Cheapflights users on 2/21. 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 4/77:40 pm
SAN
-
YXU
3 stops22h 38m
United Airlines
Tue 4/145:10 am
YXU
-
SAN
1 stop9h 43m
United Airlines
Deal found 2/21$612

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 February 23, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$454
(oojo)
Provider with most accurate pricing for San Diego-London flight deals.
Search Deals
Provider most trusted by Cheapflights users for San Diego-London flights.
Search Deals
From San Diego to London
Search Deals

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 2,558,603 searches. Data last updated February 23, 2026.
Use the filters below to find and compare flights from San Diego to London that are best for you.

Fly from

San Diego

Fly to

London

Route

Depart

Return

Price

San DiegoLondon

SAN - YXU

SANYXU

San Diego

Thu 4/9

12:45 pm-8:43 am

2 stops16h 58m

London

Thu 4/16

5:10 am-5:25 pm

2 stops15h 15m

$535

San DiegoLondon

SAN - YXU

SANYXU

San Diego

Tue 4/7

1:10 pm-8:43 am

1 stop16h 33m

London

Tue 4/14

5:10 am-5:25 pm

2 stops15h 15m

$597

San DiegoLondon

SAN - YXU

SANYXU

San Diego

Tue 4/7

7:40 pm-9:18 pm

3 stops22h 38m

London

Tue 4/14

5:10 am-11:53 am

1 stop9h 43m

$612

San DiegoLondon

SAN - YXU

SANYXU

San Diego

Fri 3/6

6:15 am-9:21 pm

2 stops12h 06m

London

Mon 3/9

9:40 am-8:53 pm

3 stops14h 13m

$928

San DiegoLondon

SAN - YXU

SANYXU

San Diego

Fri 3/6

8:45 am-8:46 am

2 stops21h 01m

London

Mon 3/9

5:40 pm-11:53 am

1 stop21h 13m

$1,103

San DiegoLondon

SAN - YXU

SANYXU

San Diego

Thu 4/9

6:20 am-9:18 pm

2 stops11h 58m

London

Thu 4/16

9:25 am-8:39 pm

3 stops14h 14m

$1,192

San DiegoLondon

SAN - YXU

SANYXU

San Diego

Thu 2/26

12:55 pm-8:46 am

2 stops16h 51m

$650

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

  • 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.
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.

Cheapflights Insights

Everything you need to know about your flight from San Diego to London

What is the cheapest month to book a flight from San Diego to London, Ontario?

Currently, June is the cheapest month in which you can book a flight from San Diego to London, Ontario (average of $76). Flying from San Diego to London, Ontario in September is currently the most expensive (average of $253). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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.

  • How long is the flight from San Diego to London, Ontario?

    There are many flights that can get you from San Diego to London, Ontario in 16h 58m. Fly via Air Canada or United Airlines to get the fastest option. Airlines will cover a distance of 2070 mi. This flight may include one or multiple stops.

  • Can I find deals for flights from San Diego to London that include hotel bookings?

    Yes. In addition to deals on San Diego to London flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from San Diego to London?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Diego to London.

  • Can I find deals for business class flights from San Diego to London?

    Yes. Cheapflights offers flight deals from San Diego to London by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from San Diego to London, Ontario?

    Currently, June is the cheapest month in which you can book a flight from San Diego to London, Ontario (average of $76). Flying from San Diego to London, Ontario in September is currently the most expensive (average of $253). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Grand Bend

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 for San Diego to London

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to Pearson Intl flights
San Francisco to Pearson Intl flights
Los Angeles to Pierre Elliott Trudeau Intl flights
Los Angeles to Toronto Island flights
San Francisco to Toronto Island flights
San Diego to Pearson Intl flights
Las Vegas to Pearson Intl flights
Ontario to Pearson Intl flights
San Jose to Pearson Intl flights
San Francisco to Hamilton flights
Oakland to Pearson Intl flights
Sacramento to Pearson Intl flights
San Francisco to Region of Waterloo Intl flights
Los Angeles to Region of Waterloo Intl flights
Santa Ana to Pearson Intl flights
San Diego to Pierre Elliott Trudeau Intl flights
Palm Springs to Pearson Intl flights
Los Angeles to Hamilton flights
Las Vegas to Pierre Elliott Trudeau Intl flights
Las Vegas to Toronto Island flights
San Diego to Hamilton flights
Ontario to Pierre Elliott Trudeau Intl flights
Fresno to Pearson Intl flights
San Jose to Hamilton flights
San Jose to Pierre Elliott Trudeau Intl flights
Los Angeles to Ottawa flights
San Diego to Region of Waterloo Intl flights
San Diego to Ottawa flights
San Jose to Toronto Island flights
Burbank to Pearson Intl flights
Santa Rosa to Pearson Intl flights
Reno to Pearson Intl flights
Reno to Pierre Elliott Trudeau Intl flights
San Francisco to Ottawa flights
Santa Ana to Pierre Elliott Trudeau Intl flights
Palm Springs to Hamilton flights
Medford to Pearson Intl flights
Santa Ana to Ottawa flights
Santa Barbara to Pearson Intl flights
Las Vegas to Ottawa flights
San Luis Obispo to Pearson Intl flights

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.