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Cheap flights from San Francisco to Cardiff from £570

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 14/1. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — CWL
1 Jan — 8 Jan1
1 adult
1 adult, Economy, 0 bags

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 2 December 2025.

Mon 29/1213:55SFO - CWL
1 stop19h 00mKLM
Tue 6/117:25CWL - SFO
2 stops32h 24mKLM
Deal found 30/11£711
Wed 31/1214:05SFO - CWL
2 stops18h 50mKLM
Wed 7/117:25CWL - SFO
1 stop26h 25mKLM
Deal found 2/12£766
Wed 31/1205:50SFO - CWL
2 stops20h 00mDelta
Wed 7/110:20CWL - SFO
2 stops20h 44mDelta
Deal found 2/12£773
Tue 30/1213:55SFO - CWL
1 stop19h 00mKLM
Wed 7/117:25CWL - SFO
2 stops32h 24mKLM
Deal found 30/11£831
Wed 31/1219:25SFO - CWL
3 stops28h 40mMultiple Airlines
Wed 7/115:55CWL - SFO
2 stops31h 05mMultiple Airlines
Deal found 2/12£1,360

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 2 December 2025.

Round-trip from

£570
KLM
  • KLM
  • 23/3-31/3
  • 2 total stops
  • 45h 30m total
  • San Francisco to Cardiff
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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 2 December 2025.
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

Wed 14/1

13:55-16:55

1 stop19h 00m

Cardiff Wales

Wed 21/1

17:25-11:50

1 stop26h 25m

£570

San FranciscoCardiff

SFO - CWL

SFOCWL

San Francisco

Wed 14/1

12:10-16:55

2 stops20h 45m

Cardiff Wales

Wed 21/1

10:20-23:04

2 stops20h 44m

£581

San FranciscoCardiff

SFO - CWL

SFOCWL

San Francisco

Wed 25/2

06:10-16:55

2 stops26h 45m

Cardiff Wales

Sun 1/3

10:20-11:50

1 stop33h 30m

£604

San FranciscoCardiff

SFO - CWL

SFOCWL

San Francisco

Wed 25/2

06:00-16:55

2 stops26h 55m

Cardiff Wales

Sun 1/3

17:30-11:50

1 stop26h 20m

£606

San FranciscoCardiff

SFO - CWL

SFOCWL

San Francisco

Mon 29/12

13:55-16:55

1 stop19h 00m

Cardiff Wales

Tue 6/1

17:25-17:49

2 stops32h 24m

£711

San FranciscoCardiff

SFO - CWL

SFOCWL

San Francisco

Wed 31/12

13:55-16:55

1 stop19h 00m

Cardiff Wales

Wed 7/1

17:25-11:50

1 stop26h 25m

£763

Flights are sorted by cheapest return flights first.

Deals found on 30/11

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 Virgin Atlantic 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 7h 55m. 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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How does Cheapflights help users find flights from San Francisco to Cardiff?

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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