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Cheap flights from San Francisco to Cardiff from £251

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 20/6. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — CWL
31 Mar — 7 Apr1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from San Francisco to Cardiff

Enter your travel dates to find the best prices.

Cheapest flights from San Francisco to Cardiff
Explore the most affordable flight options available from San Francisco to Cardiff. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 1 March 2026.

Tue 21/413:45
SFO
-
CWL
1 stop19h 00m
KLM
Tue 28/417:15
CWL
-
SFO
1 stop26h 30m
KLM
Deal found 28/2£608
Tue 21/410:32
SFO
-
CWL
2 stops22h 13m
Delta
Tue 28/409:45
CWL
-
SFO
2 stops21h 52m
Delta
Deal found 28/2£620
Fri 11/913:45
SFO
-
CWL
1 stop35h 30m
Air Europa
Sun 20/909:50
CWL
-
SFO
1 stop33h 55m
Air Europa
Deal found 26/2£651
Sun 31/517:40
SFO
-
CWL
1 stop20h 20m
Multiple Airlines
Mon 7/910:25
CWL
-
SFO
2 stops37h 55m
Multiple Airlines
Deal found 26/2£684
Wed 25/307:00
SFO
-
CWL
2 stops19h 50m
Air Europa
Sun 29/317:15
CWL
-
SFO
1 stop26h 30m
Air Europa
Deal found 25/2£692
Fri 11/921:00
SFO
-
CWL
2 stops35h 45m
Multiple Airlines
Sun 20/917:15
CWL
-
SFO
1 stop26h 30m
Multiple Airlines
Deal found 26/2£715
Fri 8/523:55
SFO
-
CWL
2 stops25h 20m
Air Europa
Fri 22/517:15
CWL
-
SFO
1 stop26h 30m
Air Europa
Deal found 24/2£736
Sun 12/413:45
SFO
-
CWL
1 stop35h 30m
KLM
Sun 19/409:50
CWL
-
SFO
1 stop33h 55m
KLM
Deal found 25/2£737
Thu 13/813:45
SFO
-
CWL
1 stop35h 30m
KLM
Sun 16/809:50
CWL
-
SFO
1 stop33h 55m
KLM
Deal found 25/2£738

Find flight deals from San Francisco to Cardiff

Discover tips and strategies to find the most affordable flight options for your journey from San Francisco (SFO) to Cardiff (CWL). 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 1 March 2026.

Round-trip from

£608

One-way from

£251
KLM
  • KLM
  • 21/4-28/4
  • 2 total stops
  • 45h 30m total
  • San Francisco to Cardiff
Search Deals
WestJet
  • WestJet
  • 20/6
  • 2 total stops
  • 32h 10m total
  • San Francisco to Cardiff
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from San Francisco to Cardiff 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 1 March 2026.
Use the filters below to find and compare flights from San Francisco to Cardiff that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

San FranciscoCardiff

SFO - CWL

SFOCWL

San Francisco

Tue 21/4

13:45-16:45

1 stop19h 00m

Cardiff Wales

Tue 28/4

17:15-11:45

1 stop26h 30m

£608

San FranciscoCardiff

SFO - CWL

SFOCWL

San Francisco

Tue 21/4

10:32-16:45

2 stops22h 13m

Cardiff Wales

Tue 28/4

09:45-23:37

2 stops21h 52m

£620

San FranciscoCardiff

SFO - CWL

SFOCWL

San Francisco

Wed 25/3

07:00-09:50

2 stops19h 50m

Cardiff Wales

Sun 29/3

17:15-11:45

1 stop26h 30m

£692

San FranciscoCardiff

SFO - CWL

SFOCWL

San Francisco

Sun 12/4

13:45-09:15

1 stop35h 30m

Cardiff Wales

Sun 19/4

09:50-11:45

1 stop33h 55m

£737

San FranciscoCardiff

SFO - CWL

SFOCWL

San Francisco

Thu 13/8

13:45-09:15

1 stop35h 30m

Cardiff Wales

Sun 16/8

09:50-11:45

1 stop33h 55m

£738

San FranciscoCardiff

SFO - CWL

SFOCWL

San Francisco

Wed 12/8

17:00-16:45

2 stops15h 45m

Cardiff Wales

Sun 16/8

17:15-11:45

1 stop26h 30m

£742

San FranciscoCardiff

SFO - CWL

SFOCWL

San Francisco

Wed 25/3

14:55-16:55

1 stop19h 00m

Cardiff Wales

Sun 29/3

17:15-11:45

1 stop26h 30m

£753

San FranciscoCardiff

SFO - CWL

SFOCWL

San Francisco

Fri 8/5

13:45-17:05

1 stop19h 20m

Cardiff Wales

Fri 22/5

17:15-11:45

1 stop26h 30m

£755

San FranciscoCardiff

SFO - CWL

SFOCWL

San Francisco

Sun 31/5

13:20-10:15

1 stop36h 55m

Cardiff Wales

Mon 7/9

11:35-12:20

1 stop32h 45m

£763

San FranciscoCardiff

SFO - CWL

SFOCWL

San Francisco

Fri 29/5

10:29-17:05

2 stops22h 36m

Cardiff Wales

Wed 9/9

09:45-23:07

2 stops21h 22m

£795

Flights are sorted by cheapest return flights first.

Deals found on 25/2

Showing 1-10 of 14 resultsSorted by cheapest first
1
2

Best time to book a flight from San Francisco to Cardiff

Have a flexible travel schedule? Discover the best time to fly to Cardiff from San Francisco 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 San Francisco to Cardiff. 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 San Francisco to Cardiff?

    Airlines like KLM, Delta, and Air Europa fly from San Francisco to Cardiff in about 19h. The time it takes to get you to your destination can typically vary by up to 3h 13m. Airlines will cover a distance of 5267 mi. This flight may include one or multiple stops.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from San Francisco to Cardiff 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 Cardiff?

Book flights to Cardiff if you plan to visit one of these locations
Barry
Bridgend

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When you search for this flight from San Francisco to Cardiff, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

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

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Cardiff from San Francisco.

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

Users can book flights with no change fees policies with our dedicated filters. Book flights from San Francisco to Cardiff flexibly with Cheapflights today.

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

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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