How long is the flight from San Francisco to Cardiff?

Airlines like 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 . Airlines will cover a distance of 5267 mi.

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.

£799+ Cheap Flights from San Francisco to Cardiff

Cheap flight deals from San Francisco to 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 20 October 2026.

Tue 27/1014:05 -

2 stops19h 55m

Tue 3/1117:30 -

1 stop26h 15m

Deal found 19/10£871

Mon 23/1114:05 -

2 stops18h 55m

Sun 6/1210:20 -

1 stop33h 25m

Deal found 17/10£899

Tue 27/1008:55 -

2 stops17h 55m

Tue 3/1117:30 -

2 stops30h 37m

Deal found 19/10£929

Tue 27/1014:50 -

2 stops22h 55m

Tue 3/1117:30 -

3 stops34h 40m

Deal found 19/10£1,305

Find flight deals from San Francisco to Cardiff

Round-trip from	£798

KLM
1/3-12/3
2 total stops
45h 25m total
San Francisco to Cardiff

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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

£799

San FranciscoCardiff

SFO San Francisco - CWL Cardiff Wales

SFOCWL

San Francisco

Mon 23/11

14:05-17:00

2 stops18h 55m

Cardiff Wales

Sun 6/12

10:20-11:45

1 stop33h 25m

£899

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Deals found on 19/10

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Best time to book a flight from San Francisco to Cardiff

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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 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 . Airlines will cover a distance of 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 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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Cheap flights from San Francisco to Cardiff from £799

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/3. 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 20 October 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 20 October 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 20 October 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 20 October 2026.

Last-minute flights from San Francisco to CardiffDiscover last-minute flight deals from San Francisco to Cardiff. Data last updated 20 October 2026 and is based on user searches.

Discover last-minute flight deals from San Francisco to Cardiff. Data last updated 20 October 2026 and is based on user searches.

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Best time to book a flight from San Francisco to Cardiff

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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 20 October 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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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 20 October 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 20 October 2026.

Last-minute flights from San Francisco to Cardiff
Discover last-minute flight deals from San Francisco to Cardiff. Data last updated 20 October 2026 and is based on user searches.