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Cheap flights from Cardiff to San Diego from £653

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 20/4. Fares are subject to change and may not be available on all flights or dates of travel.
CWL — SAN
25 Apr — 2 May1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Cardiff to San Diego

Enter your travel dates to find the best prices.

Cheapest flights from Cardiff to San Diego
Explore the most affordable flight options available from Cardiff to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 26 March 2026.

Mon 20/417:15
CWL
-
SAN
1 stop26h 35m
KLM
Mon 27/415:30
SAN
-
CWL
2 stops17h 15m
KLM
Deal found 23/3£653
Sun 10/517:15
CWL
-
SAN
2 stops29h 42m
KLM
Sun 17/507:30
SAN
-
CWL
2 stops17h 45m
KLM
Deal found 26/3£846
Mon 20/413:35
CWL
-
SAN
2 stops33h 50m
Multiple Airlines
Mon 27/417:15
SAN
-
CWL
3 stops32h 00m
Multiple Airlines
Deal found 23/3£956

Find flight deals from Cardiff to San Diego

Discover tips and strategies to find the most affordable flight options for your journey from Cardiff (CWL) 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 26 March 2026.

Round-trip from

£653
KLM
  • KLM
  • 20/4-27/4
  • 3 total stops
  • 43h 50m total
  • Cardiff to San Diego
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Cheapflights Fare Finder

 
Customise your flight search to find flights from Cardiff 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 858,174 searches. Data last updated 26 March 2026.
Use the filters below to find and compare flights from Cardiff to San Diego that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight
Fastest return journey

CardiffSan Diego

CWL - SAN

CWLSAN

Cardiff Wales

Mon 20/4

17:15-11:50

1 stop26h 35m

San Diego

Mon 27/4

15:30-16:45

2 stops17h 15m

£653

CardiffSan Diego

CWL - SAN

CWLSAN

Cardiff Wales

Sun 10/5

17:15-14:57

2 stops29h 42m

San Diego

Sun 17/5

07:30-09:15

2 stops17h 45m

£846

CardiffSan Diego

CWL - SAN

CWLSAN

Cardiff Wales

Mon 20/4

12:00-11:50

3 stops31h 50m

San Diego

Mon 27/4

17:15-09:15

3 stops32h 00m

£1,543

Flights are sorted by cheapest return flights first.

Deals found on 23/3

Sorted by cheapest first

Best time to book a flight from Cardiff to San Diego

Have a flexible travel schedule? Discover the best time to fly to San Diego from Cardiff with our price prediction graph.
Estimated return 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.

Related info for your journey

Find useful and relevant information for your journey from Cardiff 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 Cardiff to San Diego?

    Departing from Cardiff to San Diego will take you 26h 35m. The distance between Cardiff and San Diego is about 5376 mi.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Cardiff 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
Coronado
El Cajon

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

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