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Cheap flights from Cardiff to San Francisco Bay Area from £431

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 30/10. Fares are subject to change and may not be available on all flights or dates of travel.
CWL — SFO
16 Oct — 23 Oct1
1 adult
1 adult, Economy

Cheap flight deals from Cardiff to San Francisco Bay Area

Keep the following information in mind while searching for Cardiff to San Francisco Bay Area flight deals. Data was last updated 16 September 2025.

Round-trip from

£431
30/10-6/11
  • 30/10-6/11
  • 5 total stops
  • 53h 25m total
  • Cardiff to San Francisco Bay Area
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Find flight deals from Cardiff to San Francisco Bay Area

Cheapest flights from Cardiff to San Francisco Bay Area
Explore the most affordable flight options available from Cardiff to San Francisco Bay Area. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 16 September 2025.

Thu 30/1014:30CWL - SFO
2 stops32h 05mMultiple Airlines
Thu 6/1116:40SFO - CWL
3 stops21h 20mMultiple Airlines
Deal found 15/9£431
Thu 30/1017:25CWL - SFO
1 stop26h 25mKLM
Thu 6/1113:55SFO - CWL
1 stop18h 50mKLM
Deal found 15/9£487
Tue 23/909:50CWL - SFO
2 stops19h 58mDelta
Tue 7/1013:45SFO - CWL
1 stop19h 00mDelta
Deal found 14/9£491
Thu 2/1017:15CWL - SFO
1 stop26h 30mKLM
Sat 11/1015:23SFO - CWL
2 stops17h 22mKLM
Deal found 14/9£498
Thu 30/1010:20CWL - SFO
2 stops19h 15mDelta
Wed 5/1100:35SFO - CWL
2 stops25h 15mDelta
Deal found 15/9£610
Wed 24/909:50CWL - SJC
2 stops20h 21mDelta
Wed 8/1013:20SJC - CWL
2 stops19h 25mDelta
Deal found 14/9£676
Tue 23/909:50CWL - SJC
2 stops20h 21mDelta
Tue 7/1006:35SJC - CWL
2 stops18h 40mDelta
Deal found 14/9£685
Thu 2/1012:00CWL - SFO
3 stops29h 24mMultiple Airlines
Sat 11/1022:53SFO - CWL
3 stops28h 37mMultiple Airlines
Deal found 14/9£861
Mon 22/909:50CWL - SJC
2 stops18h 54mDelta
Mon 6/1014:21SJC - CWL
2 stops18h 24mDelta
Deal found 14/9£964
Mon 22/909:50CWL - SFO
2 stops19h 37mDelta
Mon 6/1005:45SFO - CWL
2 stops19h 30mDelta
Deal found 14/9£964
Thu 2/1009:50CWL - SFO
2 stops21h 48mDelta
Fri 10/1000:35SFO - CWL
2 stops24h 40mDelta
Deal found 14/9£2,999

Cheapflights Fare Finder

 
Customise your flight search to find flights from Cardiff to San Francisco Bay Area 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 September 2025.
Use the filters below to find and compare flights from Cardiff to San Francisco Bay Area that are best for you.

Fly from

Cardiff

Fly to

San Francisco Bay Area

Route

Depart

Return

Price

CardiffSan Francisco

CWL - SFO

CWLSFO

Cardiff Wales

Thu 30/10

14:30-15:35

2 stops32h 05m

San Francisco

Thu 6/11

16:40-22:00

3 stops21h 20m

£431

CardiffSan Francisco

CWL - SFO

CWLSFO

Cardiff Wales

Thu 30/10

17:25-12:50

1 stop26h 25m

San Francisco

Thu 6/11

13:55-16:45

1 stop18h 50m

£487

CardiffSan Francisco

CWL - SFO

CWLSFO

Cardiff Wales

Thu 30/10

17:25-21:06

2 stops34h 41m

San Francisco

Thu 6/11

13:25-09:50

2 stops60h 25m

£487

CardiffSan Francisco

CWL - SFO

CWLSFO

Cardiff Wales

Thu 2/10

09:50-23:59

2 stops22h 09m

San Francisco

Sat 11/10

07:05-09:15

2 stops18h 10m

£491

CardiffSan Francisco

CWL - SFO

CWLSFO

Cardiff Wales

Thu 2/10

17:15-11:45

1 stop26h 30m

San Francisco

Sat 11/10

15:23-16:45

2 stops17h 22m

£498

CardiffSan Francisco

CWL - SFO

CWLSFO

Cardiff Wales

Fri 6/3

17:25-11:50

1 stop26h 25m

San Francisco

Tue 10/3

14:55-16:55

1 stop19h 00m

£523

CardiffSan Francisco

CWL - SFO

CWLSFO

Cardiff Wales

Thu 30/10

10:20-22:35

2 stops19h 15m

San Francisco

Wed 5/11

00:35-09:50

2 stops25h 15m

£610

Flights are sorted by cheapest return flights first.

Deals found on 15/9

Best time to book a flight from Cardiff to San Francisco Bay Area

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

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

Currently, February is the cheapest month in which you can book a flight from Cardiff to San Francisco Bay Area (average of £538). Flying from Cardiff to San Francisco Bay Area in July is currently the most expensive (average of £803). 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 Bay Area. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Cardiff to San Francisco Bay Area?

    For a flight from Cardiff to San Francisco Bay Area, you will be flying from Cardiff Wales. Cardiff Wales (CWL) is just 9.1 mi from the center of the city.

  • How long is the flight from Cardiff to San Francisco Bay Area?

    For as low as £491, KLM can have you in San Francisco Bay Area from Cardiff in 22h 09m. There are 5267 mi between Cardiff and San Francisco Bay Area. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • What are the most popular routes from Cardiff to San Francisco Bay Area?

    Most travelers choose Cardiff Wales - San Francisco, Cardiff Wales - San Jose or Cardiff Wales - Oakland when deciding on the best route from Cardiff to San Francisco Bay Area.

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

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

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

    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 Bay Area.

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

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

    Currently, February is the cheapest month in which you can book a flight from Cardiff to San Francisco Bay Area (average of £538). Flying from Cardiff to San Francisco Bay Area in July is currently the most expensive (average of £803). 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

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Fly with Cheapflights

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

Cheapflights makes it easy to find Cardiff to San Francisco Bay Area 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 Bay Area?

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

Cheapflights does show flights with no change fees to all users. To see these options for flights from Cardiff to San Francisco Bay Area, users can toggle the no change fees filter when performing a flight search.

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

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