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$1,022+ Cheap flights from Cardiff (CWL) 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 9/5. Fares are subject to change and may not be available on all flights or dates of travel.
CWL — SAN
Sep 3 — Sep 101
Thu 9/3
Thu 9/10
1 adult, Economy
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Cheap 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 August 4, 2026.

This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/59:45 am
CWL
-
SAN
2 stops19h 03m
Delta
Thu 9/101:40 pm
SAN
-
CWL
1 stop35h 35m
Delta
Deal found 7/30$1,022
This WestJet deal was found by Cheapflights users on 7/31. 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.
Thu 9/311:35 am
CWL
-
SAN
2 stops58h 35m
WestJet
Mon 9/73:30 pm
SAN
-
CWL
2 stops58h 45m
WestJet
Deal found 7/31$1,275
This WestJet deal was found by Cheapflights users on 8/3. 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 8/3111:35 am
CWL
-
SAN
2 stops58h 35m
WestJet
Mon 9/73:30 pm
SAN
-
CWL
2 stops58h 45m
WestJet
Deal found 8/3$1,400

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 August 4, 2026.

Round-trip from

$1,022
(Delta)
From Cardiff Wales to San Diego
Search Deals

Cheapflights Fare Finder

 
Customize 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 2,558,603 searches. Data last updated August 4, 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 round-trip
Quickest round-trip

CardiffSan Diego

CWL - SAN

CWLSAN

Cardiff Wales

Sat 9/5

9:45 am-8:48 pm

2 stops19h 03m

San Diego

Thu 9/10

1:40 pm-9:15 am

1 stop35h 35m

$1,022

CardiffSan Diego

CWL - SAN

CWLSAN

Cardiff Wales

Thu 9/3

11:35 am-2:10 pm

2 stops58h 35m

San Diego

Mon 9/7

3:30 pm-10:15 am

2 stops58h 45m

$1,275

CardiffSan Diego

CWL - SAN

CWLSAN

Cardiff Wales

Mon 8/31

11:35 am-2:10 pm

2 stops58h 35m

San Diego

Mon 9/7

3:30 pm-10:15 am

2 stops58h 45m

$1,400

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

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 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.

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?

    Airlines like Delta and WestJet fly from Cardiff to San Diego in about 19h 03m. The time it takes to get you to your destination can typically vary by up to 39h 32m. The distance between Cardiff and San Diego is about 5376 mi. This flight may include one or multiple stops.

  • 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 vacation 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

Traveling to a place near San Diego?

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

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