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Cheap flights from San Francisco to Cardiff from £626

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 3/4. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — CWL
15 Feb — 22 Feb1
1 adult
1 adult, Economy, 0 bags

Cheap 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 16 January 2026.

Round-trip from

£729

One-way from

£626
1/3-5/3
  • 1/3-5/3
  • 2 total stops
  • 46h 25m total
  • San Francisco to Cardiff
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Aer Lingus
  • Aer Lingus
  • 3/4
  • 2 total stops
  • 34h 55m total
  • San Francisco to Cardiff
Search Deals

Find 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 16 January 2026.

Sun 1/318:20
SFO
-
CWL
1 stop20h 45m
Multiple Airlines
Thu 5/321:55
CWL
-
SFO
1 stop25h 40m
Multiple Airlines
Deal found 15/1£729
Sun 1/305:45
SFO
-
CWL
2 stops20h 05m
Delta
Thu 5/310:20
CWL
-
SFO
2 stops18h 51m
Delta
Deal found 15/1£831

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 16 January 2026.
Use the filters below to find and compare flights from San Francisco to Cardiff that are best for you.

Fly from

San Francisco

Fly to

Cardiff

Route

Depart

Return

Price

San FranciscoCardiff

SFO - CWL

SFOCWL

San Francisco

Sun 1/3

18:20-23:05

1 stop20h 45m

Cardiff Wales

Thu 5/3

21:55-15:35

1 stop25h 40m

£729

San FranciscoCardiff

SFO - CWL

SFOCWL

San Francisco

Sun 1/3

05:45-09:50

2 stops20h 05m

Cardiff Wales

Thu 5/3

10:20-21:11

2 stops18h 51m

£831

San FranciscoCardiff

SFO - CWL

SFOCWL

San Francisco

Fri 3/4

16:35-11:30

2 stops34h 55m

£626

San FranciscoCardiff

SFO - CWL

SFOCWL

San Francisco

Sat 14/2

16:40-16:00

3 stops39h 20m

£1,025

San FranciscoCardiff

SFO - CWL

SFOCWL

San Francisco

Sat 14/2

13:55-16:50

1 stop18h 55m

£1,210

Flights are sorted by cheapest return flights first.

Deals found on 13/1

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 Delta fly from San Francisco to Cardiff in about 20h 05m. The time it takes to get you to your destination can typically vary by up to . Airlines will cover a distance of 5267 mi.

  • 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.

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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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