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$516+ Cheap flights from London, ON (YXU) to San Diego (SAN)

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 2/22. Fares are subject to change and may not be available on all flights or dates of travel.
YXU — SAN
Nov 28 — Dec 51
Fri 11/28
Fri 12/5
1 adult, Economy
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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 October 29, 2025.

This United Airlines deal was found by Cheapflights users on 10/27. 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.
Mon 11/35:40 pmYXU - SAN
2 stops20h 51mUnited Airlines
Mon 11/1011:02 amSAN - YXU
2 stops18h 44mUnited Airlines
Deal found 10/27$1,043
This WestJet deal was found by Cheapflights users on 10/27. 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 WestJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/38:10 pmYXU - SAN
2 stops23h 09mWestJet
Mon 11/1012:35 pmSAN - YXU
1 stop27h 37mWestJet
Deal found 10/27$1,232

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 October 29, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$516
(United Airlines)

Popular in

November

Cheapest in

January

Average price

$425
Provider with most accurate pricing for London-San Diego flight deals.
Search Deals
Provider most trusted by Cheapflights users for London-San Diego flights.
Search Deals
From London to San Diego
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($45 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($25 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
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 2,558,603 searches. Data last updated October 29, 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 2/22

9:25 am-9:25 pm

2 stops15h 00m

San Diego

Thu 2/26

7:05 am-9:21 pm

2 stops11h 16m

$516

LondonSan Diego

YXU - SAN

YXUSAN

London

Sun 2/22

5:15 am-11:53 am

1 stop9h 38m

San Diego

Thu 2/26

6:10 pm-8:46 am

2 stops11h 36m

$544

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/27

Compare providers for flights from London to San Diego

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from London to San Diego in October.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on London, Ontario-San Diego flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on London, Ontario-San Diego flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from London, Ontario-San Diego flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on London, Ontario-San Diego flights, Cheapflights users trust eDreams the most. eDreams 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 London, Ontario-San Diego 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 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, July is the cheapest month in which you can book a flight from London, Ontario to San Diego (average of $96). Flying from London, Ontario to San Diego in November is currently the most expensive (average of $235). 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 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 9h 38m. United Airlines provides one of the quickest options available for as low as $544. The distance from London, Ontario to San Diego is about 2070 mi. This flight may include one or multiple stops.

  • 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, July is the cheapest month in which you can book a flight from London, Ontario to San Diego (average of $96). Flying from London, Ontario to San Diego in November is currently the most expensive (average of $235). 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
La Mesa
Poway
Lemon Grove
National City

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