How long is the flight from San Francisco to Cardiff?

Airlines like Delta and KLM fly from San Francisco to Cardiff in about 19h 10m. The time it takes to get you to your destination can typically vary by up to 40m. Airlines will cover a distance of 5267 mi. This flight may include one or multiple stops.

In terms of precipitation, rainfall in Cardiff ranges from 50.0 - 90.0 inches per month. January is typically the wettest month, when rainfall can reach 90.0 mm. April is typically the driest time to visit Cardiff when rainfall is around 50.0 mm.

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 18.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 4.0 C).

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.

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 holiday 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.

£758+ Cheap Flights from San Francisco to Cardiff

Cheap flight deals from San Francisco to Cardiff

Enter your travel dates to find the best prices.

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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 5 September 2026.

Mon 26/1018:20 -

1 stop20h 30m

Sat 31/1023:50 -

1 stop23h 45m

Deal found 3/9£761

Tue 8/917:40 -

1 stop21h 45m

Thu 10/922:50 -

2 stops31h 05m

Deal found 4/9£821

Mon 5/1017:35 -

1 stop21h 15m

Fri 9/1007:45 -

2 stops36h 15m

Deal found 4/9£834

Thu 1/1017:35 -

1 stop29h 20m

Thu 8/1020:50 -

2 stops32h 00m

Deal found 3/9£843

Mon 5/1009:30 -

2 stops23h 15m

Fri 9/1009:45 -

2 stops22h 39m

Deal found 4/9£1,000

Find flight deals from San Francisco to Cardiff

Round-trip from	£736

13/2-15/2
2 total stops
27h 35m total
San Francisco to Cardiff

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

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Route

Depart

Return

Price

Cheapest return flight

San FranciscoCardiff

SFO San Francisco - CWL Cardiff Wales

SFOCWL

San Francisco

Wed 10/2

10:00-17:00

2 stops23h 00m

Cardiff Wales

Thu 18/2

10:20-11:45

1 stop33h 25m

£758

San FranciscoCardiff

SFO San Francisco - CWL Cardiff Wales

SFOCWL

San Francisco

Sun 14/2

06:00-09:50

2 stops19h 50m

Cardiff Wales

Thu 18/2

10:20-11:45

1 stop33h 25m

£758

San FranciscoCardiff

SFO San Francisco - CWL Cardiff Wales

SFOCWL

San Francisco

Sun 14/2

06:00-09:50

2 stops19h 50m

Cardiff Wales

Tue 16/2

10:20-16:21

2 stops38h 01m

£765

San FranciscoCardiff

SFO San Francisco - CWL Cardiff Wales

SFOCWL

San Francisco

Sat 13/2

22:45-09:50

2 stops51h 05m

Cardiff Wales

Thu 18/2

10:20-22:39

2 stops20h 19m

£770

Fastest return journey

San FranciscoCardiff

SFO San Francisco - CWL Cardiff Wales

SFOCWL

San Francisco

Mon 1/3

13:50-17:00

1 stop19h 10m

Cardiff Wales

Fri 12/3

17:30-11:45

1 stop26h 15m

£793

Flights are sorted by cheapest return flights first.

Deals found on 4/9

Sorted by cheapest first

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.

SFO-CWL

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.

Related info for your journey

How long is the flight from San Francisco to Cardiff?
Airlines like Delta and KLM fly from San Francisco to Cardiff in about 19h 10m. The time it takes to get you to your destination can typically vary by up to 40m. Airlines will cover a distance of 5267 mi. This flight may include one or multiple stops.
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 holiday 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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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 Cardiff from San Francisco.

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

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Cheap flights from San Francisco to Cardiff from £758

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

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 5 September 2026.

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 5 September 2026.

Best flights from San Francisco to CardiffDiscover carefully curated flight deals from San Francisco to Cardiff that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 5 September 2026.

Discover carefully curated flight deals from San Francisco to Cardiff that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 5 September 2026.

Last-minute flights from San Francisco to CardiffDiscover last-minute flight deals from San Francisco to Cardiff. Data last updated 5 September 2026 and is based on user searches.

Discover last-minute flight deals from San Francisco to Cardiff. Data last updated 5 September 2026 and is based on user searches.

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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

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?

Travelling to a place near Cardiff?

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for San Francisco to Cardiff

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Other flights to Cardiff

Explore flights to Cardiff departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 5 September 2026.

Complete your trip

Complete your trip to Cardiff by adding a car hire and/or hotel booking to your travel itinerary.

Direct flights to Wales

Book a non-stop flight to one of these other cities located in Wales.

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San Francisco and Cardiff flights

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

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

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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 5 September 2026.

Best flights from San Francisco to Cardiff
Discover carefully curated flight deals from San Francisco to Cardiff that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 5 September 2026.

Last-minute flights from San Francisco to Cardiff
Discover last-minute flight deals from San Francisco to Cardiff. Data last updated 5 September 2026 and is based on user searches.