Find flights
When to book
Airlines
FAQs

Cheap flights from San Francisco Bay Area to Cardiff from £644

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 25/2. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — CWL
3 Sep — 10 Sep1
1 adult

Cheap flight deals from San Francisco Bay Area to Cardiff

Keep the following information in mind while searching for San Francisco Bay Area to Cardiff flight deals. Data was last updated 29 August 2025.

Round-trip from

£644
Delta
  • Delta
  • 25/2-2/3
  • 3 total stops
  • 58h 40m total
  • San Francisco Bay Area to Cardiff
Search Deals

Find flight deals from San Francisco Bay Area to Cardiff

Cheapest flights from San Francisco Bay Area to Cardiff
Explore the most affordable flight options available from San Francisco Bay Area to Cardiff. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 August 2025.

Sat 11/1006:35SJC - CWL
2 stops18h 40mKLM
Sat 18/1017:35CWL - SJC
2 stops32h 44mKLM
Deal found 27/8£694
Mon 29/1213:55SFO - CWL
1 stop19h 00mDelta
Tue 6/110:20CWL - SFO
2 stops20h 27mDelta
Deal found 27/8£782
Mon 29/1213:55SFO - CWL
1 stop19h 00mKLM
Tue 6/117:15CWL - SFO
1 stop26h 35mKLM
Deal found 27/8£981
Wed 10/914:30SJC - CWL
2 stops18h 15mKLM
Sat 13/917:35CWL - SJC
2 stops30h 44mKLM
Deal found 28/8£1,207
Tue 9/914:29SJC - CWL
2 stops18h 16mKLM
Fri 12/909:50CWL - SJC
2 stops21h 51mKLM
Deal found 29/8£1,517
Tue 9/907:00SJC - CWL
2 stops25h 45mDelta
Fri 12/909:50CWL - SJC
2 stops21h 51mDelta
Deal found 27/8£1,518
Sat 11/1005:55SJC - CWL
3 stops20h 40mMultiple Airlines
Sat 18/1017:35CWL - SJC
3 stops33h 46mMultiple Airlines
Deal found 27/8£1,862
Mon 29/1208:49SFO - CWL
3 stops18h 41mMultiple Airlines
Tue 6/112:00CWL - SFO
3 stops35h 00mMultiple Airlines
Deal found 28/8£2,736

Cheapflights Fare Finder

 
Customise your flight search to find flights from San Francisco Bay Area 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 29 August 2025.
Use the filters below to find and compare flights from San Francisco Bay Area to Cardiff that are best for you.

Fly from

San Francisco Bay Area

Fly to

Cardiff

Route

Depart

Return

Price

San FranciscoCardiff

SFO - CWL

SFOCWL

San Francisco

Wed 25/2

00:40-09:50

2 stops25h 10m

Cardiff Wales

Mon 2/3

10:20-11:50

1 stop33h 30m

£644

San JoseCardiff

SJC - CWL

SJCCWL

San Jose

Sat 11/10

06:35-09:15

2 stops18h 40m

Cardiff Wales

Sat 18/10

17:35-18:19

2 stops32h 44m

£694

San FranciscoCardiff

SFO - CWL

SFOCWL

San Francisco

Mon 29/12

13:55-16:55

1 stop19h 00m

Cardiff Wales

Tue 6/1

10:20-22:47

2 stops20h 27m

£782

San FranciscoCardiff

SFO - CWL

SFOCWL

San Francisco

Mon 29/12

13:55-16:55

1 stop19h 00m

Cardiff Wales

Tue 6/1

17:15-11:50

1 stop26h 35m

£981

San JoseCardiff

SJC - CWL

SJCCWL

San Jose

Wed 10/9

14:30-16:45

2 stops18h 15m

Cardiff Wales

Sat 13/9

17:35-16:19

2 stops30h 44m

£1,207

San JoseCardiff

SJC - CWL

SJCCWL

San Jose

Tue 9/9

14:29-16:45

2 stops18h 16m

Cardiff Wales

Fri 12/9

09:50-23:41

2 stops21h 51m

£1,517

San JoseCardiff

SJC - CWL

SJCCWL

San Jose

Tue 9/9

07:00-16:45

2 stops25h 45m

Cardiff Wales

Fri 12/9

09:50-23:41

2 stops21h 51m

£1,518

San JoseCardiff

SJC - CWL

SJCCWL

San Jose

Sat 11/10

05:55-10:35

3 stops20h 40m

Cardiff Wales

Sat 18/10

17:35-19:21

3 stops33h 46m

£1,862

San FranciscoCardiff

SFO - CWL

SFOCWL

San Francisco

Mon 29/12

08:49-11:30

3 stops18h 41m

Cardiff Wales

Tue 6/1

12:00-15:00

3 stops35h 00m

£2,736

Flights are sorted by cheapest return flights first.

Deals found on 28/8

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

Have a flexible travel schedule? Discover the best time to fly to Cardiff from San Francisco Bay Area 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 San Francisco Bay Area to Cardiff
No data available for this route at this time. Please check back soon.

Reviews of airlines servicing Cardiff

Get insights into the airlines that provide service to Cardiff. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Cardiff. Reviews last updated 29 August 2025.
Check out reviews from past customers who have flown with KLM from San Francisco Bay Area to Cardiff to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.8
Good
1,383 reviews
Check prices

Crew

8.4

Boarding

7.8

Entertainment

7.1

Comfort

7.7

Overall

7.8

Food

7.3

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
KLM
7.8
Good
1,383 reviews
KLM
7.8
Good
1,383 reviews
Check prices

Crew

8.4

Boarding

7.8

Entertainment

7.1

Comfort

7.7

Overall

7.8

Food

7.3

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

Related info for your journey

Find useful and relevant information for your journey from San Francisco Bay Area to Cardiff. 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 into for flights to Cardiff from San Francisco Bay Area?

    Cardiff Wales (CWL) is the airport you will fly into if you book a flight from San Francisco Bay Area to Cardiff. It is only a 9.1 mi journey from Cardiff Wales (CWL) to Cardiff’s city center.

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

    There are many flights that can get you from San Francisco Bay Area to Cardiff in 18h 40m. Fly via Delta or KLM to get the fastest option. The distance between San Francisco Bay Area and Cardiff is about 5268 mi. 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 San Francisco Bay Area to Cardiff?

    While some choose either San Francisco - Cardiff Wales or Oakland - Cardiff Wales, San Jose - Cardiff Wales is the most popular route from San Francisco Bay Area to Cardiff.

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

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

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

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

    Yes. Cheapflights offers flight deals from San Francisco Bay Area 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.

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

    Currently, July is the cheapest month in which you can book a flight from San Francisco Bay Area to Cardiff (average of £169). Flying from San Francisco Bay Area to Cardiff in December is currently the most expensive (average of £263). 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 Cardiff?

Book flights to Cardiff if you plan to visit one of these locations
Barry
Bridgend

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top airline flying from San Francisco Bay Area to Cardiff

Discover the top airline that operate flights from San Francisco Bay Area to Cardiff. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 29 August 2025.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest£603Average£610FlexibilityNo cancel feeOn-time75%
Search KLM flights

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 San Francisco Bay Area to Cardiff?

Cheapflights helps you search for flights from San Francisco Bay Area to Cardiff via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

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

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from San Francisco Bay Area to Cardiff for you. Better yet — we are completely free to use.

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

Users can book flights with no change fees policies with our dedicated filters. Book flights from San Francisco Bay Area to Cardiff flexibly with Cheapflights today.

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

Yes, Cheapflights offers price alerts on San Francisco Bay Area to Cardiff 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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.