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Cheap flights from Cardiff to San Diego from £587

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/10. Fares are subject to change and may not be available on all flights or dates of travel.
CWL — SAN
24 Aug — 31 Aug1
1 adult

Cheap 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 19 August 2025.

Round-trip from

£587
KLM
  • KLM
  • 1/10-8/10
  • 4 total stops
  • 37h 26m total
  • Cardiff to San Diego
Search Deals

Find flight deals from Cardiff to San Diego

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 19 August 2025.

Wed 1/1009:50CWL - SAN
2 stops18h 36mKLM
Wed 8/1006:25SAN - CWL
2 stops18h 50mKLM
Deal found 17/8£587
Sun 14/917:15CWL - SAN
2 stops32h 45mKLM
Sun 21/913:55SAN - CWL
1 stop18h 50mKLM
Deal found 17/8£644
Sun 14/911:00CWL - SAN
3 stops39h 42mMultiple Airlines
Sun 21/906:15SAN - CWL
3 stops26h 30mMultiple Airlines
Deal found 17/8£1,069
Wed 1/1012:00CWL - SAN
2 stops38h 00mMultiple Airlines
Wed 8/1006:15SAN - CWL
3 stops29h 30mMultiple Airlines
Deal found 17/8£3,122

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

Fly from

Cardiff

Fly to

San Diego

Route

Depart

Return

Price

CardiffSan Diego

CWL - SAN

CWLSAN

Cardiff Wales

Wed 1/10

09:50-20:26

2 stops18h 36m

San Diego

Wed 8/10

13:40-16:45

2 stops19h 05m

£587

CardiffSan Diego

CWL - SAN

CWLSAN

Cardiff Wales

Wed 1/10

09:50-20:26

2 stops18h 36m

San Diego

Wed 8/10

06:25-09:15

2 stops18h 50m

£587

CardiffSan Diego

CWL - SAN

CWLSAN

Cardiff Wales

Sun 14/9

17:15-23:24

2 stops38h 09m

San Diego

Sun 21/9

17:15-16:45

2 stops15h 30m

£644

CardiffSan Diego

CWL - SAN

CWLSAN

Cardiff Wales

Sun 14/9

11:00-18:42

3 stops39h 42m

San Diego

Sun 21/9

06:15-16:45

3 stops26h 30m

£1,069

CardiffSan Diego

CWL - SAN

CWLSAN

Cardiff Wales

Wed 1/10

12:00-18:00

2 stops38h 00m

San Diego

Wed 8/10

06:15-19:45

3 stops29h 30m

£3,122

Flights are sorted by cheapest return flights first.

Deals found on 17/8

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 18h 36m. 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.

  • What is the cheapest month to book a flight from Cardiff to San Diego?

    Currently, January is the cheapest month in which you can book a flight from Cardiff to San Diego (average of £585). Flying from Cardiff to San Diego in July is currently the most expensive (average of £920). 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
Coronado
El Cajon

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Fly with Cheapflights

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

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

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Cardiff to San Diego.

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

Yes, we can. To see specific flights from Cardiff 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 Cardiff to San Diego become cheaper?

Yes! Start tracking prices for Cardiff to San Diego flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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