How long is the flight from San Francisco to Cardiff?

For as low as $926, KLM can have you in Cardiff from San Francisco in 19h. The distance between San Francisco and Cardiff is about 5267 mi.

In terms of precipitation, rainfall in Cardiff ranges from 2.0 - 3.5 inches per month. January is typically the wettest month, when rainfall can reach 3.5 in. April is typically the driest time to visit Cardiff when rainfall is around 2.0 in.

If weather is an important factor for your trip to Cardiff, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 64.4 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 39.2 F).

What is the cheapest time of day to fly from SFO to CWL?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from San Francisco to Cardiff as you normally would.

Most accurate provider : When it comes to deals on San Francisco-Cardiff flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Francisco-Cardiff flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San Francisco-Cardiff flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on San Francisco-Cardiff flights, Cheapflights users trust Expedia the most. Expedia has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for San Francisco-Cardiff flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 vacation 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.

$926+ Flights from San Francisco to Cardiff

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1. Tell us where you want to go

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Cheap flight deals from San Francisco to Cardiff

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 diciembre 12, 2025.

lun. 12/291:55 pmSFO - CWL

1 stop19h 00mKLM

mar. 1/65:25 pmCWL - SFO

2 stops32h 24mKLM

Deal found 12/10

$926

Best flights from San Francisco to Cardiff
Discover carefully curated flight deals from San Francisco to Cardiff that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated diciembre 12, 2025.

lun. 12/291:55 pmSFO - CWL

1 stop19h 00mKLM

mar. 1/65:25 pmCWL - SFO

2 stops32h 24mKLM

Deal found 12/10

$926

lun. 1/58:40 pmSFO - CWL

2 stops51h 25mAer Lingus

sáb. 1/1012:00 pmCWL - SFO

2 stops35h 00mAer Lingus

Deal found 12/11

$1,720

lun. 1/53:40 pmSFO - CWL

2 stops17h 15mKLM

sáb. 1/1010:20 amCWL - SFO

1 stop33h 30mKLM

Deal found 12/10

$1,983

Last-minute flights from San Francisco to Cardiff
Discover last-minute flight deals from San Francisco to Cardiff. Data last updated diciembre 12, 2025 and is based on user searches.

lun. 12/291:55 pmSFO - CWL

1 stop19h 00mKLM

mar. 1/65:25 pmCWL - SFO

2 stops32h 24mKLM

Deal found 12/10

$926

lun. 1/58:40 pmSFO - CWL

2 stops51h 25mAer Lingus

sáb. 1/1012:00 pmCWL - SFO

2 stops35h 00mAer Lingus

Deal found 12/11

$1,720

lun. 1/53:40 pmSFO - CWL

2 stops17h 15mKLM

sáb. 1/1010:20 amCWL - SFO

1 stop33h 30mKLM

Deal found 12/10

$1,983

Find flight deals from San Francisco to Cardiff

Most accurate provider	FlightHub 3 stars
Most trusted provider	Expedia 3 stars
Round-trip from	$926 (KLM)

Provider with most accurate pricing for San Francisco-Cardiff Wales flight deals.

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Provider most trusted by Cheapflights users for San Francisco-Cardiff Wales flights.

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From San Francisco to Cardiff Wales

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Cheapflights Fare Finder

Use the filters below to find and compare flights from San Francisco to Cardiff that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

San FranciscoCardiff

SFO - CWL

SFOCWL

San Francisco

lun. 12/29

1:55 pm-4:55 pm

1 stop19h 00m

Cardiff Wales

mar. 1/6

5:25 pm-5:49 pm

2 stops32h 24m

$926

San FranciscoCardiff

SFO - CWL

SFOCWL

San Francisco

lun. 1/5

8:40 pm-8:05 am

2 stops51h 25m

Cardiff Wales

sáb. 1/10

12:00 pm-3:00 pm

2 stops35h 00m

$1,720

San FranciscoCardiff

SFO - CWL

SFOCWL

San Francisco

lun. 1/5

3:40 pm-4:55 pm

2 stops17h 15m

Cardiff Wales

sáb. 1/10

10:20 am-11:50 am

1 stop33h 30m

$1,983

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/10

Compare providers for flights from San Francisco to Cardiff

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from San Francisco to Cardiff in December.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy2 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on San Francisco-Cardiff flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Francisco-Cardiff flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San Francisco-Cardiff flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on San Francisco-Cardiff flights, Cheapflights users trust Expedia the most. Expedia has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for San Francisco-Cardiff flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 round-trip 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

How long is the flight from San Francisco to Cardiff?
For as low as $926, KLM can have you in Cardiff from San Francisco in 19h. The distance between San Francisco and Cardiff is about 5267 mi.
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 vacation 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.

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$926+ Cheap flights from San Francisco (SFO) to Cardiff (CWL)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/29. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from San Francisco to Cardiff with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from San Francisco to Cardiff

Cheapest flights from San Francisco to CardiffExplore 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 diciembre 12, 2025.

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 diciembre 12, 2025.

Find flight deals from San Francisco to Cardiff

Most accurate provider

Most trusted provider

Round-trip from

Cheapflights Fare Finder

Use the filters below to find and compare flights from San Francisco to Cardiff that are best for you.

Compare providers for flights from San Francisco to Cardiff

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from San Francisco to Cardiff in December.

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.

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?

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

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

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

Traveling to a place near Cardiff?

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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 diciembre 12, 2025.