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$233+ Cheap flights from London, ON (YXU) to San Diego (SAN)

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 9/13. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — SAN
Aug 4 — Aug 111
Mon 8/4
Mon 8/11
1 adult, Economy
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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 July 30, 2025.

Round-trip from

$386
(SmartFares)

One-way from

$233
(Air Canada)

Popular in

November

Cheapest in

January

Average price

$639
From London to San Diego
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One-way flight from London to San Diego
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Highest demand for flights based on searches. 17% potential increase in price ($96 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($27 potential savings vs. average RT price).
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Average for round-trip flights in July 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 July 30, 2025.

This SmartFares deal was found by Cheapflights users on 7/30. 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.
Sun 9/286:00 amYXU - SAN
1 stop10h 20mWestJet
Wed 10/12:05 pmSAN - YXU
1 stop12h 07mWestJet
Deal found 7/30$386
This United Airlines deal was found by Cheapflights users on 7/30. 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.
Sun 9/286:10 amYXU - SAN
2 stops20h 31mUnited Airlines
Wed 10/18:08 pmSAN - YXU
3 stops15h 54mUnited Airlines
Deal found 7/30$492
This Mytrip deal was found by Cheapflights users on 7/30. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/286:00 amYXU - SAN
3 stops28h 29mMultiple Airlines
Wed 10/11:35 pmSAN - YXU
3 stops26h 32mMultiple Airlines
Deal found 7/30$550

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 2,558,603 searches. Data last updated July 30, 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

Sun 9/28

6:00 am-1:20 pm

1 stop10h 20m

San Diego

Wed 10/1

2:05 pm-5:12 am

1 stop12h 07m

$386

LondonSan Diego

YXU - SAN

YXUSAN

London

Sun 9/28

6:10 am-11:41 pm

2 stops20h 31m

San Diego

Wed 10/1

4:07 pm-9:17 am

2 stops14h 10m

$492

LondonSan Diego

YXU - SAN

YXUSAN

London

Sun 9/28

6:00 am-7:29 am

3 stops28h 29m

San Diego

Wed 10/1

1:35 pm-7:07 pm

3 stops26h 32m

$550

LondonSan Diego

YXU - SAN

YXUSAN

London

Sat 9/13

6:10 am-11:31 am

1 stop8h 21m

$233

LondonSan Diego

YXU - SAN

YXUSAN

London

Sat 9/13

8:00 pm-7:29 am

2 stops38h 29m

$241

LondonSan Diego

YXU - SAN

YXUSAN

London

Sat 9/13

6:10 am-8:48 pm

3 stops17h 38m

$269

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

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, August is the cheapest month in which you can book a flight from London, Ontario to San Diego (average of $286). Flying from London, Ontario to San Diego in March is currently the most expensive (average of $366). 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.

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 July 30, 2025.
Read through reviews of airlines operating flights from London to San Diego, such as United Airlines, WestJet, and Air Canada. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,896 reviews

Boarding

7.7

Comfort

7.3

Food

6.6

Entertainment

7.1

Overall

7.4

Crew

8.1

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
8,896 reviews
United Airlines
7.4
Good
8,896 reviews

Boarding

7.7

Comfort

7.3

Food

6.6

Entertainment

7.1

Overall

7.4

Crew

8.1

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.
WestJet
7.2
Good
2,975 reviews
United Airlines
7.4
Good
8,896 reviews

Boarding

7.7

Comfort

7.3

Food

6.6

Entertainment

7.1

Overall

7.4

Crew

8.1

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
9,837 reviews
United Airlines
7.4
Good
8,896 reviews

Boarding

7.7

Comfort

7.3

Food

6.6

Entertainment

7.1

Overall

7.4

Crew

8.1

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.

  • What are the cheapest airlines flying from London, Ontario to San Diego round-trip?

    Currently priced at $386, WestJet will fly you from London, Ontario to San Diego and back. In addition to WestJet, many other airlines offer competitively priced options for your trip. Check Cheapflights for deals on United Airlines for as low as $492. Users have found that WestJet is 13% cheaper than the other options available to this destination.

  • 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, August is the cheapest month in which you can book a flight from London, Ontario to San Diego (average of $286). Flying from London, Ontario to San Diego in March is currently the most expensive (average of $366). 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 San Diego?

Book flights to San Diego if you plan to visit one of these locations
El Cajon
Chula Vista
Coronado
Poway
National City
Lemon Grove
Imperial Beach
La Mesa
Alpine

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