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Cheap flights from San Francisco to Cardiff from £209

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from San Francisco to Cardiff departing on 24/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from San Francisco to Cardiff

Cheap return flights

Enter your travel dates to find the best prices.
WestJet Logo
06:00 - 10:15-
20h 15m
WestJet Logo
11:35 - 16:40-
61h 05m
£1,252WestJet
Mon, 17 Aug - Thu, 20 Aug
WestJet Logo
18:05 - 10:15-
32h 10m
WestJet Logo
11:35 - 12:00-
56h 25m
£1,472WestJet
Sat, 15 Aug - Tue, 18 Aug

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WestJet flights from San Francisco to Cardiff

Our best WestJet deals on San Francisco to Cardiff flight tickets
WestJet
17 Aug
SFO06:00San Francisco
20h 15m
2 stops
CWL10:15Cardiff Wales
20 Aug
CWL11:35Cardiff Wales
61h 05m
2 stops
SFO16:40San Francisco
£1,252
WestJet
15 Aug
SFO18:05San Francisco
32h 10m
2 stops
CWL10:15Cardiff Wales
18 Aug
CWL11:35Cardiff Wales
56h 25m
2 stops
SFO12:00San Francisco
£1,472
WestJet
14 Aug
SFO06:00San Francisco
20h 15m
2 stops
CWL10:15Cardiff Wales
17 Aug
CWL11:35Cardiff Wales
56h 25m
2 stops
SFO12:00San Francisco
£1,630

momondo Fare Finder

 
Customise your flight search to find flights from San Francisco 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, momondo users made 279,928 searches. Data last updated 5 August 2026.
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

Cheapest return flight
Fastest return journey

San FranciscoCardiff

SFO - CWL

SFOCWL

San Francisco

Mon 17/8

06:00-10:15

2 stops20h 15m

Cardiff Wales

Thu 20/8

11:35-16:40

2 stops61h 05m

£1,252

San FranciscoCardiff

SFO - CWL

SFOCWL

San Francisco

Sat 15/8

18:05-10:15

2 stops32h 10m

Cardiff Wales

Tue 18/8

11:35-12:00

2 stops56h 25m

£1,472
Cheapest one-way

San FranciscoCardiff

SFO - CWL

SFOCWL

San Francisco

Sat 24/10

13:00-09:10

2 stops36h 10m

£209

San FranciscoCardiff

SFO - CWL

SFOCWL

San Francisco

Sat 24/10

07:10-14:55

3 stops23h 45m

£264

San FranciscoCardiff

SFO - CWL

SFOCWL

San Francisco

Sat 24/10

17:40-09:10

1 stop31h 30m

£307
Fastest single journey

San FranciscoCardiff

SFO - CWL

SFOCWL

San Francisco

Sat 24/10

13:45-10:50

1 stop13h 05m

£434

San FranciscoCardiff

SFO - CWL

SFOCWL

San Francisco

Sat 24/10

13:00-16:15

3 stops43h 15m

£2,027

San FranciscoCardiff

SFO - CWL

SFOCWL

San Francisco

Sat 24/10

21:35-11:30

2 stops30h 55m

£2,770

San FranciscoCardiff

SFO - CWL

SFOCWL

San Francisco

Sat 24/10

13:45-10:50

1 stop13h 05m

£3,384

Flights are sorted by cheapest return flights first.

Sorted by cheapest first

See travel insights to Cardiff from

How to get the cheapest flight ticket from San Francisco to Cardiff

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from San Francisco to Cardiff Wales?

KLM, Delta, and Aer Lingus are the most popular carriers operating from San Francisco to Cardiff Wales

When to book flights from San Francisco to Cardiff

Are you open to changing your travel dates? Check out the ideal times to fly from San Francisco to Cardiff according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap San Francisco to Cardiff (SFO to CWL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from San Francisco to Cardiff

Fastest flight time

20h 05m

Direct flights

None
The fastest flight from San Francisco to Cardiff takes 20h 05m
There are no direct flights from San Francisco to Cardiff. There are no popular flight routes from San Francisco to Cardiff.
Search flight deals

Frequently asked questions about flying from San Francisco to Cardiff

  • How far is San Francisco to Cardiff Wales by plane?

    San Francisco and Cardiff Wales are 5259.3 mi apart from one another. A reasonable flight in good conditions will take 20h 05m.

  • When did momondo last update prices for flights from San Francisco Airport to Cardiff Wales Airport?

    Prices for flights from San Francisco Airport to Cardiff Wales Airport refresh daily.

  • How old do you have to be to fly from San Francisco Airport to Cardiff Wales Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from San Francisco Airport to Cardiff Wales Airport.

  • What documentation or ID do you need to fly to Cardiff Wales Airport?

    The required travel and health documents for your Cardiff Wales Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Cardiff Wales Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Travelling to a place near Cardiff?

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

Why use momondo?

Why should I use momondo to find a flight deal from San Francisco to Cardiff?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Cardiff from San Francisco.

Can I find flights from San Francisco to Cardiff with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Cardiff from San Francisco with this policy.

How can momondo help me find flights from San Francisco to Cardiff?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Cardiff from San Francisco.

I’m not ready to book a flight from San Francisco to Cardiff right now. Can momondo alert me if prices change?

Yes. momondo can track prices for San Francisco to Cardiff flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

An easier way to manage your Cardiff trip

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Find better results for your trip to the United Kingdom

Airports servicing Wales

Holyhead Anglesey Airport