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Cheap flights from San Francisco to Cardiff from £696

This is the cheapest return flight price found by a momondo user in the last 72 hours by searching for a flight from San Francisco to Cardiff departing on 31/5. 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
0 bags
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Find the cheapest flights from San Francisco to Cardiff

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
06:00 - 10:15
SFO
-
CWL
44h 15m
3 stops
Multiple Airlines Logo
23:30 - 12:13
CWL
-
SFO
44h 43m
3 stops
£696Multiple Airlines
Sun, 31 May - Wed, 10 Jun
Multiple Airlines Logo
16:30 - 10:15
SFO
-
CWL
33h 45m
3 stops
Multiple Airlines Logo
23:30 - 21:10
CWL
-
SFO
29h 40m
2 stops
£700Multiple Airlines
Sun, 31 May - Wed, 10 Jun
Multiple Airlines Logo
17:40 - 21:45
SFO
-
CWL
20h 05m
1 stop
Multiple Airlines Logo
11:35 - 21:55
CWL
-
SFO
42h 20m
2 stops
£727Multiple Airlines
Sun, 5 Jul - Tue, 14 Jul
Multiple Airlines Logo
18:05 - 10:15
SFO
-
CWL
32h 10m
2 stops
Multiple Airlines Logo
11:35 - 12:20
CWL
-
SFO
32h 45m
1 stop
£741Multiple Airlines
Tue, 7 Jul - Tue, 14 Jul
Multiple Airlines Logo
18:05 - 10:15
SFO
-
CWL
32h 10m
2 stops
Multiple Airlines Logo
23:30 - 21:10
CWL
-
SFO
29h 40m
2 stops
£774Multiple Airlines
Sun, 31 May - Wed, 10 Jun
Multiple Airlines Logo
13:20 - 10:15
SFO
-
CWL
36h 55m
1 stop
Multiple Airlines Logo
11:35 - 12:20
CWL
-
SFO
32h 45m
1 stop
£779Multiple Airlines
Tue, 7 Jul - Tue, 14 Jul
Multiple Airlines Logo
22:58 - 10:15
SFO
-
CWL
27h 17m
2 stops
Multiple Airlines Logo
11:35 - 12:20
CWL
-
SFO
32h 45m
1 stop
£784Multiple Airlines
Sun, 14 Jun - Sat, 20 Jun
Multiple Airlines Logo
13:20 - 10:15
SFO
-
CWL
36h 55m
1 stop
Multiple Airlines Logo
11:35 - 12:20
CWL
-
SFO
32h 45m
1 stop
£792Multiple Airlines
Thu, 28 May - Thu, 4 Jun
Multiple Airlines Logo
19:30 - 10:15
SFO
-
CWL
30h 45m
3 stops
Multiple Airlines Logo
21:45 - 21:10
CWL
-
SFO
31h 25m
3 stops
£796Multiple Airlines
Sun, 24 May - Sun, 31 May
Multiple Airlines Logo
17:40 - 21:20
SFO
-
CWL
19h 40m
1 stop
Multiple Airlines Logo
21:45 - 12:23
CWL
-
SFO
46h 38m
2 stops
£802Multiple Airlines
Sat, 25 Apr - Sun, 10 May

KLM flights from San Francisco to Cardiff

Our best KLM deals on San Francisco to Cardiff flight tickets
KLM
12 Aug
SFO13:45San Francisco
19h 00m
1 stop
CWL16:45Cardiff Wales
16 Aug
CWL09:50Cardiff Wales
33h 55m
1 stop
SFO11:45San Francisco
£822
KLM
12 Aug
SFO07:00San Francisco
18h 15m
2 stops
CWL09:15Cardiff Wales
16 Aug
CWL17:15Cardiff Wales
26h 30m
1 stop
SFO11:45San Francisco
£825
KLM
25 Apr
SFO13:45San Francisco
35h 30m
1 stop
CWL09:15Cardiff Wales
10 May
CWL17:15Cardiff Wales
26h 30m
1 stop
SFO11:45San Francisco
£938

WestJet flights from San Francisco to Cardiff

Our best WestJet deals on San Francisco to Cardiff flight tickets
WestJet
14 Jun
SFO13:00San Francisco
37h 15m
2 stops
CWL10:15Cardiff Wales
20 Jun
CWL11:35Cardiff Wales
32h 25m
2 stops
SFO12:00San Francisco
£917
WestJet
6 Jul
SFO18:05San Francisco
56h 10m
2 stops
CWL10:15Cardiff Wales
14 Jul
CWL11:35Cardiff Wales
42h 20m
2 stops
SFO21:55San Francisco
£949
WestJet
9 Jul
SFO18:05San Francisco
32h 10m
2 stops
CWL10:15Cardiff Wales
13 Jul
CWL11:35Cardiff Wales
32h 25m
2 stops
SFO12:00San Francisco
£1,018

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 14 April 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

San FranciscoCardiff

SFO - CWL

SFOCWL

San Francisco

Sun 31/5

06:00-10:15

3 stops44h 15m

Cardiff Wales

Wed 10/6

23:30-12:13

3 stops44h 43m

£696

San FranciscoCardiff

SFO - CWL

SFOCWL

San Francisco

Sun 31/5

16:30-10:15

3 stops33h 45m

Cardiff Wales

Wed 10/6

23:30-21:10

2 stops29h 40m

£700

San FranciscoCardiff

SFO - CWL

SFOCWL

San Francisco

Sun 5/7

17:40-21:45

1 stop20h 05m

Cardiff Wales

Tue 14/7

11:35-21:55

2 stops42h 20m

£727

San FranciscoCardiff

SFO - CWL

SFOCWL

San Francisco

Tue 7/7

18:05-10:15

2 stops32h 10m

Cardiff Wales

Tue 14/7

11:35-12:20

1 stop32h 45m

£741

San FranciscoCardiff

SFO - CWL

SFOCWL

San Francisco

Sun 31/5

18:05-10:15

2 stops32h 10m

Cardiff Wales

Wed 10/6

23:30-21:10

2 stops29h 40m

£774

San FranciscoCardiff

SFO - CWL

SFOCWL

San Francisco

Tue 7/7

13:20-10:15

1 stop36h 55m

Cardiff Wales

Tue 14/7

11:35-12:20

1 stop32h 45m

£779
Fastest return journey

San FranciscoCardiff

SFO - CWL

SFOCWL

San Francisco

Sun 14/6

22:58-10:15

2 stops27h 17m

Cardiff Wales

Sat 20/6

11:35-12:20

1 stop32h 45m

£784

San FranciscoCardiff

SFO - CWL

SFOCWL

San Francisco

Thu 28/5

13:20-10:15

1 stop36h 55m

Cardiff Wales

Thu 4/6

11:35-12:20

1 stop32h 45m

£792

San FranciscoCardiff

SFO - CWL

SFOCWL

San Francisco

Sun 24/5

19:30-10:15

3 stops30h 45m

Cardiff Wales

Sun 31/5

21:45-21:10

3 stops31h 25m

£796

San FranciscoCardiff

SFO - CWL

SFOCWL

San Francisco

Sat 25/4

17:40-21:20

1 stop19h 40m

Cardiff Wales

Sun 10/5

21:45-12:23

2 stops46h 38m

£802

Flights are sorted by cheapest return flights first.

Sorted by cheapest first

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

21h 25m

Direct flights

None
The fastest flight from San Francisco to Cardiff takes 21h 25m
There are no direct flights from San Francisco to Cardiff. There are no popular flight routes from San Francisco to Cardiff.
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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 21h 25m.

  • 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.

Frequently asked questions about flying from San Francisco to Cardiff

  • How do I get Price Alerts for flights from San Francisco to Cardiff?

    Price Alerts will notify you by email when the price for flights to Cardiff from San Francisco decreases. To activate this, select your desired travel dates and search for offers. While browsing through offers you’ll see the Price Alert widget toggle. Click it to turn on notifications.

  • How can I save money on flights from San Francisco to Cardiff with momondo?

    By using tools like our “Price Calendar”, you can see the best days for return flights on your travels. Our “Price Forecast” tool uses AI to predict whether you should purchase or hold off on booking for potentially cheaper prices. Explore shows you all flight options from a city or airport to build your own unique adventure. The Discover blog also provides valuable insights for saving money while booking your experience. After searching you can toggle on “Price Alerts” to track prices for your desired flight and book at the ideal moment.

  • How does momondo find its flight prices?

    We aggregate our prices from over 700+ competitors from airlines to OTAs. We operate in over 30 markets worldwide to show you a wide range of travel options.

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