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Cheap flights from Cardiff to San Francisco from £311

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 19/1. Fares are subject to change and may not be available on all flights or dates of travel.
CWL — SFO
1 Feb — 8 Feb1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Cardiff to San Francisco

Enter your travel dates to find the best prices.

Cheapest flights from Cardiff to San Francisco
Explore the most affordable flight options available from Cardiff to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 2 January 2026.

Thu 7/522:25CWL - SFO
2 stops30h 59mMultiple Airlines
Wed 13/517:35SFO - CWL
1 stop20h 25mMultiple Airlines
Deal found 2/1£521
Thu 7/522:25CWL - SFO
2 stops30h 59mMultiple Airlines
Tue 12/517:35SFO - CWL
1 stop21h 50mMultiple Airlines
Deal found 2/1£526
Sat 14/210:20CWL - SFO
2 stops21h 05mDelta
Sat 21/205:45SFO - CWL
2 stops20h 05mDelta
Deal found 31/12£529
Wed 6/517:15CWL - SFO
1 stop26h 30mAir France
Wed 13/513:45SFO - CWL
1 stop19h 00mAir France
Deal found 2/1£535
Wed 6/509:45CWL - SFO
2 stops22h 14mMultiple Airlines
Thu 14/507:30SFO - CWL
2 stops17h 45mMultiple Airlines
Deal found 2/1£540
Sun 15/221:00CWL - SFO
1 stop24h 25mMultiple Airlines
Sun 22/213:55SFO - CWL
1 stop18h 50mMultiple Airlines
Deal found 1/1£542
Wed 6/517:15CWL - SFO
1 stop26h 30mAir France
Fri 15/513:45SFO - CWL
1 stop19h 20mAir France
Deal found 2/1£549
Tue 5/509:45CWL - SFO
1 stop34h 00mDelta
Wed 13/507:00SFO - CWL
2 stops25h 45mDelta
Deal found 2/1£566
Tue 5/509:45CWL - SFO
1 stop34h 00mDelta
Sat 16/513:45SFO - CWL
1 stop35h 30mDelta
Deal found 2/1£578
Mon 16/212:00CWL - SFO
2 stops35h 00mBritish Airways
Mon 23/220:40SFO - CWL
2 stops51h 25mBritish Airways
Deal found 2/1£595

Find flight deals from Cardiff to San Francisco

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

Round-trip from

£521

One-way from

£311
7/5-13/5
  • 7/5-13/5
  • 3 total stops
  • 51h 24m total
  • Cardiff to San Francisco
Search Deals
19/1
  • 19/1
  • 3 total stops
  • 47h 00m total
  • Cardiff to San Francisco
Search Deals

Cheapflights Fare Finder

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

Fly from

Cardiff

Fly to

San Francisco

Route

Depart

Return

Price

CardiffSan Francisco

CWL - SFO

CWLSFO

Cardiff Wales

Sun 15/2

10:15-23:25

2 stops21h 10m

San Francisco

Sun 22/2

09:55-16:45

2 stops22h 50m

£529

CardiffSan Francisco

CWL - SFO

CWLSFO

Cardiff Wales

Sat 14/2

10:20-23:25

2 stops21h 05m

San Francisco

Sat 21/2

05:45-09:50

2 stops20h 05m

£529

CardiffSan Francisco

CWL - SFO

CWLSFO

Cardiff Wales

Fri 8/5

17:15-11:45

1 stop26h 30m

San Francisco

Wed 13/5

13:45-16:45

1 stop19h 00m

£535

CardiffSan Francisco

CWL - SFO

CWLSFO

Cardiff Wales

Thu 7/5

17:15-11:45

1 stop26h 30m

San Francisco

Fri 15/5

07:30-09:15

2 stops17h 45m

£535

CardiffSan Francisco

CWL - SFO

CWLSFO

Cardiff Wales

Thu 7/5

09:45-11:45

1 stop34h 00m

San Francisco

Wed 13/5

13:45-16:45

1 stop19h 00m

£535

CardiffSan Francisco

CWL - SFO

CWLSFO

Cardiff Wales

Fri 8/5

09:45-11:45

1 stop34h 00m

San Francisco

Thu 14/5

13:05-16:45

2 stops19h 40m

£535

CardiffSan Francisco

CWL - SFO

CWLSFO

Cardiff Wales

Fri 8/5

17:15-11:45

1 stop26h 30m

San Francisco

Thu 14/5

13:45-09:15

1 stop35h 30m

£535

CardiffSan Francisco

CWL - SFO

CWLSFO

Cardiff Wales

Fri 8/5

17:15-11:45

1 stop26h 30m

San Francisco

Wed 13/5

07:30-09:15

2 stops17h 45m

£535

CardiffSan Francisco

CWL - SFO

CWLSFO

Cardiff Wales

Sun 15/2

21:00-13:25

1 stop24h 25m

San Francisco

Sun 22/2

13:55-16:45

1 stop18h 50m

£542

CardiffSan Francisco

CWL - SFO

CWLSFO

Cardiff Wales

Mon 19/1

23:30-14:30

3 stops47h 00m

£311

Flights are sorted by cheapest return flights first.

Deals found on 30/12

Best time to book a flight from Cardiff to San Francisco

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

Cheapflights Insights

Everything you need to know about your flight from Cardiff to San Francisco

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

Currently, February is the cheapest month in which you can book a flight from Cardiff to San Francisco (average of £424). Flying from Cardiff to San Francisco in June is currently the most expensive (average of £712). 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.

Related info for your journey

Find useful and relevant information for your journey from Cardiff to San Francisco. 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 Francisco?

    There are many flights that can get you from Cardiff to San Francisco in 21h 10m. Fly via Delta or Air France to get the fastest option. There are 5267 mi between Cardiff and San Francisco. Both multi-stop and direct flights can be found to your destination and back.

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

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

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

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

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

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

    Currently, February is the cheapest month in which you can book a flight from Cardiff to San Francisco (average of £424). Flying from Cardiff to San Francisco in June is currently the most expensive (average of £712). 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 Francisco?

Book flights to San Francisco if you plan to visit one of these locations
Santa Cruz
Newark
San Bruno
Bodega Bay
South San Francisco
Sunnyvale
Pacific Grove

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Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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

Cheapflights makes it easy to find Cardiff to San Francisco flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

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

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 San Francisco from Cardiff.

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

Certainly. Search results for flights to San Francisco from Cardiff shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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

Yes, Cheapflights offers price alerts on Cardiff to San Francisco flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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