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Cheap flights from London, ON to San Diego from C$ 370

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 2/10. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — SAN
23 Aug — 30 Aug1
1 adult

Cheap 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 18 August 2025.

Round-trip from

C$ 460

One-way from

C$ 370

Popular in

November

Cheapest in

January

Average price

C$ 520
WestJet
  • WestJet
  • 1/10-8/10
  • 2 total stops
  • 22h 27m total
  • London to San Diego
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United Airlines
  • United Airlines
  • 2/10
  • 2 total stops
  • 21h 00m total
  • London to San Diego
Search Deals
Highest demand for flights based on searches. 18% potential increase in price (C$ 185 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease (C$ 51 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Find flight deals from London to San Diego

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 18 August 2025.

Wed 1/106:00 a.m.YXU - SAN
1 stop10h 20mWestJet
Wed 8/102:05 p.m.SAN - YXU
1 stop12h 07mWestJet
Deal found 16/8C$ 460
Sun 12/106:00 a.m.YXU - SAN
1 stop10h 20mWestJet
Sat 18/102:05 p.m.SAN - YXU
1 stop12h 07mWestJet
Deal found 17/8C$ 495
Sat 11/108:00 p.m.YXU - SAN
1 stop20h 20mWestJet
Sat 18/102:05 p.m.SAN - YXU
1 stop26h 02mWestJet
Deal found 17/8C$ 532
Thu 2/106:15 a.m.YXU - SAN
2 stops12h 36mAir Canada
Thu 30/106:10 p.m.SAN - YXU
2 stops11h 36mAir Canada
Deal found 16/8C$ 572
Wed 1/106:00 a.m.YXU - SAN
2 stops28h 29mMultiple Airlines
Wed 8/102:05 p.m.SAN - YXU
1 stop12h 07mMultiple Airlines
Deal found 16/8C$ 576
Sat 11/106:15 a.m.YXU - SAN
2 stops14h 55mUnited Airlines
Mon 20/108:08 p.m.SAN - YXU
2 stops10h 09mUnited Airlines
Deal found 17/8C$ 579
Sat 11/106:00 a.m.YXU - SAN
1 stop10h 20mWestJet
Sun 19/102:05 p.m.SAN - YXU
1 stop26h 02mWestJet
Deal found 17/8C$ 590
Mon 24/115:45 a.m.YXU - SAN
2 stops14h 39mAir Canada
Sun 14/1212:25 p.m.SAN - YXU
1 stop17h 21mAir Canada
Deal found 17/8C$ 597
Thu 2/108:00 p.m.YXU - SAN
1 stop20h 20mMultiple Airlines
Thu 30/107:47 p.m.SAN - YXU
2 stops20h 25mMultiple Airlines
Deal found 16/8C$ 623
Mon 13/103:40 p.m.YXU - SAN
2 stops11h 01mUnited Airlines
Mon 20/1010:30 p.m.SAN - YXU
2 stops13h 32mUnited Airlines
Deal found 17/8C$ 629
Sat 11/106:15 a.m.YXU - SAN
2 stops11h 46mUnited Airlines
Sun 19/107:28 p.m.SAN - YXU
2 stops10h 49mUnited Airlines
Deal found 17/8C$ 655

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 18 August 2025.
Use the filters below to find and compare flights from London to San Diego that are best for you.

Fly from

London

Fly to

San Diego

Route

Depart

Return

Price

LondonSan Diego

YXU - SAN

YXUSAN

London

Wed 1/10

6:00 a.m.-1:20 p.m.

1 stop10h 20m

San Diego

Wed 8/10

2:05 p.m.-5:12 a.m.

1 stop12h 07m

C$ 460

LondonSan Diego

YXU - SAN

YXUSAN

London

Sun 12/10

6:00 a.m.-1:20 p.m.

1 stop10h 20m

San Diego

Sat 18/10

2:05 p.m.-5:12 a.m.

1 stop12h 07m

C$ 495

LondonSan Diego

YXU - SAN

YXUSAN

London

Sat 11/10

8:00 p.m.-1:20 p.m.

1 stop20h 20m

San Diego

Sat 18/10

2:05 p.m.-7:07 p.m.

1 stop26h 02m

C$ 532

LondonSan Diego

YXU - SAN

YXUSAN

London

Thu 2/10

6:15 a.m.-3:51 p.m.

2 stops12h 36m

San Diego

Thu 30/10

6:10 p.m.-8:46 a.m.

2 stops11h 36m

C$ 572

LondonSan Diego

YXU - SAN

YXUSAN

London

Wed 1/10

6:00 a.m.-7:29 a.m.

2 stops28h 29m

San Diego

Wed 8/10

2:05 p.m.-5:12 a.m.

1 stop12h 07m

C$ 576

LondonSan Diego

YXU - SAN

YXUSAN

London

Sat 11/10

9:55 a.m.-6:30 p.m.

2 stops11h 35m

San Diego

Sat 18/10

6:48 a.m.-9:27 p.m.

2 stops11h 39m

C$ 579

LondonSan Diego

YXU - SAN

YXUSAN

London

Sat 11/10

9:55 a.m.-6:30 p.m.

2 stops11h 35m

San Diego

Mon 20/10

8:08 p.m.-3:02 p.m.

3 stops15h 54m

C$ 579

LondonSan Diego

YXU - SAN

YXUSAN

London

Mon 24/11

5:40 p.m.-9:39 a.m.

2 stops18h 59m

San Diego

Sun 14/12

7:42 a.m.-9:21 p.m.

2 stops10h 39m

C$ 579

LondonSan Diego

YXU - SAN

YXUSAN

London

Sun 12/10

6:00 a.m.-1:20 p.m.

1 stop10h 20m

San Diego

Sun 19/10

2:05 p.m.-7:07 p.m.

1 stop26h 02m

C$ 590

LondonSan Diego

YXU - SAN

YXUSAN

London

Sat 11/10

6:00 a.m.-1:20 p.m.

1 stop10h 20m

San Diego

Sun 19/10

2:05 p.m.-7:07 p.m.

1 stop26h 02m

C$ 590

Flights are sorted by cheapest round-trip flights first.

Deals found on 18/8

Showing 1-10 of 13 results
1
2

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.

Cheapflights Insights

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

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

Currently, May is the cheapest month in which you can book a flight from London, Ontario to San Diego (average of C$ 289). Flying from London, Ontario to San Diego in November is currently the most expensive (average of C$ 390). 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.

What is the cheapest time of day to fly from YXU to SAN?

Find hourly flight availability from London to San Diego. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 18 August 2025.

When flying from London, Ontario to San Diego, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

What’s the top layover airport for flights from London, Ontario to San Diego?

Share of one-stop round-trip flights from London, Ontario to San Diego chosen by Cheapflights users in the past 12 months, using the same layover each way.

Calgary (YYC) – chosen by Cheapflights users on 80% of one-stop itineraries from London, Ontario to San Diego on Cheapflights.

What’s the cheapest layover airport for flights from London, Ontario to San Diego?

Average round-trip fare for 1-stop flights from London, Ontario to San Diego, chosen by Cheapflights users in the past 12 months, with the same layover each way.

Calgary (YYC) is the most affordable 1-stop option, with an average round-trip price of C$ 414.

What’s the fastest layover option from London, Ontario to San Diego?

Shortest average travel time for 1-stop one-way flights from London, Ontario to San Diego, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

Flights via Toronto (YYZ) have the shortest average one-way travel time for 1-stop routes: 9h 23m.

Which airport typically offers the quickest layover for flights from London, Ontario to San Diego?

Average layover duration for 1-stop one-way flights from London, Ontario to San Diego, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Toronto (YYZ) offer the fastest connection on this route, with an average layover time of 2h 22m.

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 18 August 2025.
Check out reviews from past customers who have flown with United Airlines and Air Canada 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
8,925 reviews
Check prices

Comfort

7.3

Entertainment

7.1

Food

6.6

Crew

8.1

Overall

7.4

Boarding

7.7

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.
United Airlines
7.4
Good
8,925 reviews
United Airlines
7.4
Good
8,925 reviews
Check prices

Comfort

7.3

Entertainment

7.1

Food

6.6

Crew

8.1

Overall

7.4

Boarding

7.7

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.
Air Canada
7.1
Good
9,992 reviews
United Airlines
7.4
Good
8,925 reviews
Check prices

Comfort

7.3

Entertainment

7.1

Food

6.6

Crew

8.1

Overall

7.4

Boarding

7.7

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.

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 10h 20m. WestJet provides one of the quickest options available for as low as C$ 460. London, Ontario and San Diego are separated by a distance of 3331 km. This flight may include one or multiple stops.

  • What are the cheapest airlines flying 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$ 308 on this airline. An additional option worth looking into is Air Canada, starting at C$ 385. United Airlines is currently priced 49% below the average price you’ll pay for this route.

  • 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.

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

    Currently, May is the cheapest month in which you can book a flight from London, Ontario to San Diego (average of C$ 289). Flying from London, Ontario to San Diego in November is currently the most expensive (average of C$ 390). 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

Travelling to a place near San Diego?

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

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Top 2 airlines flying from London to San Diego

Discover the top 2 airlines 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 18 August 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapestC$ 308AverageC$ 418FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air CanadaCheapestC$ 385AverageC$ 527FlexibilityNo cancel feeOn-time67%
Search Air Canada 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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