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Cheap flights from London, ON to San Diego from C$ 337

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 15/6. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — SAN
4 Jun — 11 Jun1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from London to San Diego

Enter your travel dates to find the best prices.

Cheapest flights from London to San Diego
Explore the most affordable flight options available from London to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 5 May 2026.

Tue 22/96:10 a.m.
YXU
-
SAN
1 stop11h 00m
WestJet
Wed 23/93:30 p.m.
SAN
-
YXU
1 stop10h 50m
WestJet
Deal found 3/5C$ 388
Tue 22/96:10 a.m.
YXU
-
SAN
1 stop11h 00m
Delta
Wed 23/93:30 p.m.
SAN
-
YXU
1 stop10h 50m
Delta
Deal found 4/5C$ 521
Tue 22/95:40 a.m.
YXU
-
SAN
2 stops12h 22m
Air Canada
Wed 23/97:41 p.m.
SAN
-
YXU
2 stops10h 39m
Air Canada
Deal found 3/5C$ 522
Tue 22/95:40 a.m.
YXU
-
SAN
1 stop9h 36m
United Airlines
Wed 23/910:40 p.m.
SAN
-
YXU
2 stops20h 00m
United Airlines
Deal found 4/5C$ 561
Wed 17/66:10 a.m.
YXU
-
SAN
1 stop11h 00m
WestJet
Wed 24/63:30 p.m.
SAN
-
YXU
2 stops43h 20m
WestJet
Deal found 2/5C$ 562
Wed 17/65:10 a.m.
YXU
-
SAN
2 stops20h 15m
United Airlines
Wed 24/65:15 p.m.
SAN
-
YXU
2 stops18h 42m
United Airlines
Deal found 2/5C$ 610
Mon 1/66:10 p.m.
YXU
-
SAN
2 stops18h 18m
United Airlines
Mon 8/65:15 p.m.
SAN
-
YXU
2 stops21h 18m
United Airlines
Deal found 4/5C$ 630
Mon 1/65:55 p.m.
YXU
-
SAN
1 stop23h 15m
WestJet
Mon 8/63:30 p.m.
SAN
-
YXU
2 stops19h 20m
WestJet
Deal found 4/5C$ 774
Tue 12/55:10 a.m.
YXU
-
SAN
1 stop10h 08m
Air Canada
Wed 13/57:00 a.m.
SAN
-
YXU
2 stops11h 38m
Air Canada
Deal found 30/4C$ 861
Tue 12/56:10 a.m.
YXU
-
SAN
1 stop11h 00m
WestJet
Wed 13/53:30 p.m.
SAN
-
YXU
1 stop10h 50m
WestJet
Deal found 30/4C$ 865

Find flight deals from London to San Diego

Discover tips and strategies to find the most affordable flight options for your journey from London (YXU) to San Diego (SAN). 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 5 May 2026.

Round-trip from

C$ 388

One-way from

C$ 242
WestJet
  • WestJet
  • 22/9-23/9
  • 2 total stops
  • 21h 50m total
  • London to San Diego
Search Deals
WestJet
  • WestJet
  • 11/6
  • 1 total stop
  • 11h 00m total
  • London to San Diego
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from London to San Diego 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 629,999 searches. Data last updated 5 May 2026.
Use the filters below to find and compare flights from London to San Diego that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

LondonSan Diego

YXU - SAN

YXUSAN

London

Tue 22/9

6:10 a.m.-2:10 p.m.

1 stop11h 00m

San Diego

Wed 23/9

3:30 p.m.-5:20 a.m.

1 stop10h 50m

C$ 388

LondonSan Diego

YXU - SAN

YXUSAN

London

Tue 22/9

6:10 a.m.-2:10 p.m.

1 stop11h 00m

San Diego

Wed 23/9

3:30 p.m.-5:20 a.m.

1 stop10h 50m

C$ 521

LondonSan Diego

YXU - SAN

YXUSAN

London

Tue 22/9

5:40 a.m.-3:02 p.m.

2 stops12h 22m

San Diego

Wed 23/9

7:41 p.m.-9:20 a.m.

2 stops10h 39m

C$ 522

LondonSan Diego

YXU - SAN

YXUSAN

London

Tue 22/9

5:40 a.m.-12:16 p.m.

1 stop9h 36m

San Diego

Wed 23/9

7:41 p.m.-2:55 p.m.

3 stops16h 14m

C$ 561

LondonSan Diego

YXU - SAN

YXUSAN

London

Wed 17/6

5:10 a.m.-10:25 p.m.

2 stops20h 15m

San Diego

Wed 24/6

5:15 p.m.-2:57 p.m.

2 stops18h 42m

C$ 610

LondonSan Diego

YXU - SAN

YXUSAN

London

Mon 1/6

5:55 p.m.-2:10 p.m.

1 stop23h 15m

San Diego

Mon 8/6

8:04 p.m.-5:20 a.m.

2 stops30h 16m

C$ 905
Cheapest one-way

LondonSan Diego

YXU - SAN

YXUSAN

London

Mon 15/6

5:10 a.m.-10:25 p.m.

2 stops20h 15m

C$ 337
Quickest one-way

LondonSan Diego

YXU - SAN

YXUSAN

London

Mon 15/6

5:10 a.m.-12:18 p.m.

1 stop10h 08m

C$ 411

LondonSan Diego

YXU - SAN

YXUSAN

London

Tue 9/6

5:10 a.m.-8:46 p.m.

2 stops18h 36m

C$ 456

LondonSan Diego

YXU - SAN

YXUSAN

London

Tue 9/6

5:55 p.m.-2:10 p.m.

1 stop23h 15m

C$ 611

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/5

Sorted by cheapest first

Best time to book a flight from London to San Diego

Have a flexible travel schedule? Discover the best time to fly to San Diego from London 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.

Reviews of airlines servicing San Diego

Get insights into the airlines that provide service to San Diego. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Diego. Reviews last updated 5 May 2026.
Check out reviews from past customers who have flown with United Airlines from London to San Diego to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,683 reviews
Check prices

Overall

7.4

Boarding

7.7

Crew

8.1

Entertainment

7.1

Comfort

7.3

Food

6.6

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.
United Airlines
7.4
Good
9,683 reviews
United Airlines
7.4
Good
9,683 reviews
Check prices

Overall

7.4

Boarding

7.7

Crew

8.1

Entertainment

7.1

Comfort

7.3

Food

6.6

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.

Related info for your journey

Find useful and relevant information for your journey from London to San Diego. 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 London, Ontario to San Diego?

    A quick flight from London, Ontario to San Diego can take about 11h. WestJet provides one of the quickest options available for as low as C$ 388. London, Ontario and San Diego are separated by a distance of 3331 km. This flight may include one or multiple stops.

  • What is the cheapest airline to fly from London, Ontario to San Diego round-trip?

    Our cheapest airline available from London, Ontario to San Diego is United Airlines. Our recent data shows that you can find tickets from as low as C$ 408 on this airline.

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

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

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

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

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

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

See more FAQs

Travelling to a place near San Diego?

Book flights to San Diego if you plan to visit one of these locations
El Cajon
La Mesa
Borrego Springs

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Alternative routes for London to San Diego

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Top airline flying from London to San Diego

Discover the top airline that operate flights from London to San Diego. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 5 May 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapestC$ 408AverageC$ 408FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from London to San Diego?

Cheapflights makes it easy to find London to San Diego flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from London to San Diego?

Cheapflights helps you find that perfect flight to San Diego from London by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from London to San Diego with no change fees?

Yes, we can. To see specific flights from London to San Diego with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from London to San Diego become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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