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Cheap flights from Cardiff to San Francisco Bay Area from £617

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/12. Fares are subject to change and may not be available on all flights or dates of travel.
CWL — SFO
20 Nov — 27 Nov1
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 21 October 2025.

Round-trip from

£617
Delta
  • Delta
  • 4/12-11/12
  • 4 total stops
  • 39h 43m total
  • Cardiff to San Francisco Bay Area
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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 21 October 2025.

Thu 4/1210:20CWL - SFO
2 stops20h 53mDelta
Thu 11/1207:00SFO - CWL
2 stops18h 50mDelta
Deal found 19/10£617
Thu 4/1210:20CWL - SFO
1 stop33h 30mVirgin Atlantic
Thu 11/1205:50SFO - CWL
2 stops44h 00mVirgin Atlantic
Deal found 19/10£621
Thu 4/1210:20CWL - SFO
1 stop33h 30mMultiple Airlines
Thu 11/1213:55SFO - CWL
1 stop18h 50mMultiple Airlines
Deal found 19/10£647

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 21 October 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 4/12

10:20-23:13

2 stops20h 53m

San Francisco

Thu 11/12

07:00-09:50

2 stops18h 50m

£617

CardiffSan Francisco

CWL - SFO

CWLSFO

Cardiff Wales

Thu 4/12

10:20-11:50

1 stop33h 30m

San Francisco

Thu 11/12

05:50-09:50

2 stops44h 00m

£621

CardiffSan Francisco

CWL - SFO

CWLSFO

Cardiff Wales

Thu 4/12

10:20-11:50

1 stop33h 30m

San Francisco

Thu 11/12

13:55-16:45

1 stop18h 50m

£647

CardiffSan Francisco

CWL - SFO

CWLSFO

Cardiff Wales

Thu 26/3

10:20-12:50

1 stop33h 30m

San Francisco

Mon 30/3

15:00-16:45

2 stops17h 45m

£835

CardiffSan Francisco

CWL - SFO

CWLSFO

Cardiff Wales

Thu 26/3

10:20-12:50

1 stop33h 30m

San Francisco

Mon 30/3

13:45-16:45

1 stop19h 00m

£836

CardiffSan Jose

CWL - SJC

CWLSJC

Cardiff Wales

Fri 27/3

10:20-21:32

2 stops42h 12m

San Jose

Mon 30/3

15:45-16:45

2 stops41h 00m

£1,045

CardiffOakland

CWL - OAK

CWLOAK

Cardiff Wales

Thu 26/3

10:20-23:53

2 stops44h 33m

Oakland

Mon 30/3

17:05-09:15

2 stops56h 10m

£1,396

Flights are sorted by cheapest return flights first.

Deals found on 19/10

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 £437). Flying from Cardiff to San Francisco Bay Area in June is currently the most expensive (average of £715). 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 £617, Delta can have you in San Francisco Bay Area from Cardiff in 20h 53m. 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 £437). Flying from Cardiff to San Francisco Bay Area in June is currently the most expensive (average of £715). 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?

Cheapflights simply makes it quick and affordable to book flights from Cardiff to San Francisco Bay Area by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

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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