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Cheap flights from San Francisco to Cardiff from $456

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 10/24. 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 round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
5:40 pm - 10:50 pm
SFO
-
CWL
21h 10m
1 stop
Multiple Airlines Logo
11:35 am - 12:00 pm
CWL
-
SFO
32h 25m
2 stops
$862Multiple Airlines
Tue, Aug 18 - Tue, Aug 25
Multiple Airlines Logo
1:20 pm - 10:15 am
SFO
-
CWL
36h 55m
1 stop
Multiple Airlines Logo
11:35 am - 12:20 pm
CWL
-
SFO
32h 45m
1 stop
$943Multiple Airlines
Tue, Aug 18 - Tue, Aug 25
Multiple Airlines Logo
6:00 am - 10:15 am
SFO
-
CWL
44h 15m
3 stops
Multiple Airlines Logo
11:35 am - 10:20 am
CWL
-
SFO
30h 45m
2 stops
$1,011Multiple Airlines
Tue, Aug 18 - Tue, Aug 25
Multiple Airlines Logo
5:40 pm - 9:45 pm
SFO
-
CWL
20h 05m
1 stop
Multiple Airlines Logo
11:35 am - 9:55 pm
CWL
-
SFO
42h 20m
2 stops
$1,040Multiple Airlines
Sun, Jun 28 - Thu, Jul 9
KLM Logo
3:37 pm - 4:45 pm
SFO
-
CWL
17h 08m
2 stops
KLM Logo
9:45 am - 9:47 pm
CWL
-
SFO
20h 02m
2 stops
$1,044KLM
Tue, Aug 18 - Tue, Aug 25
WestJet Logo
6:00 am - 10:15 am
SFO
-
CWL
44h 15m
3 stops
WestJet Logo
11:35 am - 12:00 pm
CWL
-
SFO
32h 25m
3 stops
$1,074WestJet
Tue, Aug 18 - Tue, Aug 25
Multiple Airlines Logo
3:49 pm - 10:15 am
SFO
-
CWL
34h 26m
2 stops
Multiple Airlines Logo
11:35 am - 12:20 pm
CWL
-
SFO
32h 45m
1 stop
$1,102Multiple Airlines
Sat, Jun 27 - Thu, Jul 9
Virgin Atlantic Logo
1:45 pm - 6:00 pm
SFO
-
CWL
20h 15m
1 stop
Virgin Atlantic Logo
5:30 pm - 12:45 pm
CWL
-
SFO
26h 15m
1 stop
$1,108Virgin Atlantic
Sat, Oct 24 - Sat, Oct 31
Virgin Atlantic Logo
6:15 am - 10:50 am
SFO
-
CWL
20h 35m
2 stops
Virgin Atlantic Logo
5:30 pm - 11:45 am
CWL
-
SFO
26h 15m
1 stop
$1,113Virgin Atlantic
Sat, Oct 24 - Sun, Nov 1
Virgin Atlantic Logo
11:30 am - 6:00 pm
SFO
-
CWL
22h 30m
2 stops
Virgin Atlantic Logo
5:30 pm - 5:21 pm
CWL
-
SFO
30h 51m
2 stops
$1,122Virgin Atlantic
Sat, Oct 24 - Sat, Oct 31

WestJet flights from San Francisco to Cardiff

Our best WestJet deals on San Francisco to Cardiff flight tickets
WestJet
Aug 18
SFO6:00 amSan Francisco
44h 15m
3 stops
CWL10:15 amCardiff Wales
Aug 25
CWL11:35 amCardiff Wales
32h 25m
3 stops
SFO12:00 pmSan Francisco
$1,074
WestJet
Jun 20
SFO6:05 pmSan Francisco
32h 10m
2 stops
CWL10:15 amCardiff Wales
Jun 27
CWL11:35 amCardiff Wales
32h 25m
2 stops
SFO12:00 pmSan Francisco
$1,318
WestJet
Aug 23
SFO6:00 amSan Francisco
44h 15m
2 stops
CWL10:15 amCardiff Wales
Aug 27
CWL11:35 amCardiff Wales
37h 05m
2 stops
SFO4:40 pmSan Francisco
$1,342

KLM flights from San Francisco to Cardiff

Our best KLM deals on San Francisco to Cardiff flight tickets
KLM
Aug 18
SFO3:37 pmSan Francisco
17h 08m
2 stops
CWL4:45 pmCardiff Wales
Aug 25
CWL9:45 amCardiff Wales
20h 02m
2 stops
SFO9:47 pmSan Francisco
$1,044
KLM
Jun 26
SFO1:45 pmSan Francisco
35h 30m
1 stop
CWL9:15 amCardiff Wales
Jul 7
CWL5:15 pmCardiff Wales
26h 30m
1 stop
SFO11:45 amSan Francisco
$1,498
KLM
Jun 26
SFO1:45 pmSan Francisco
35h 30m
1 stop
CWL9:15 amCardiff Wales
Jul 8
CWL9:45 amCardiff Wales
19h 12m
2 stops
SFO8:57 pmSan Francisco
$1,508

momondo Fare Finder

 
Customize 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 832,500 searches. Data last updated May 26, 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 round-trip

San FranciscoCardiff

SFO - CWL

SFOCWL

San Francisco

Tue 8/18

5:40 pm-10:50 pm

1 stop21h 10m

Cardiff Wales

Tue 8/25

11:35 am-12:00 pm

2 stops32h 25m

$862

San FranciscoCardiff

SFO - CWL

SFOCWL

San Francisco

Tue 8/18

1:20 pm-10:15 am

1 stop36h 55m

Cardiff Wales

Tue 8/25

11:35 am-12:20 pm

1 stop32h 45m

$943

San FranciscoCardiff

SFO - CWL

SFOCWL

San Francisco

Tue 8/18

6:00 am-10:15 am

3 stops44h 15m

Cardiff Wales

Tue 8/25

11:35 am-10:20 am

2 stops30h 45m

$1,011

San FranciscoCardiff

SFO - CWL

SFOCWL

San Francisco

Sun 6/28

5:40 pm-9:45 pm

1 stop20h 05m

Cardiff Wales

Thu 7/9

11:35 am-9:55 pm

2 stops42h 20m

$1,040
Quickest round-trip

San FranciscoCardiff

SFO - CWL

SFOCWL

San Francisco

Tue 8/18

3:37 pm-4:45 pm

2 stops17h 08m

Cardiff Wales

Tue 8/25

9:45 am-9:47 pm

2 stops20h 02m

$1,044

San FranciscoCardiff

SFO - CWL

SFOCWL

San Francisco

Tue 8/18

6:00 am-10:15 am

3 stops44h 15m

Cardiff Wales

Tue 8/25

11:35 am-12:00 pm

3 stops32h 25m

$1,074

San FranciscoCardiff

SFO - CWL

SFOCWL

San Francisco

Sat 6/27

3:49 pm-10:15 am

2 stops34h 26m

Cardiff Wales

Thu 7/9

11:35 am-12:20 pm

1 stop32h 45m

$1,102

San FranciscoCardiff

SFO - CWL

SFOCWL

San Francisco

Sat 10/24

1:45 pm-6:00 pm

1 stop20h 15m

Cardiff Wales

Sat 10/31

5:30 pm-12:45 pm

1 stop26h 15m

$1,108

San FranciscoCardiff

SFO - CWL

SFOCWL

San Francisco

Sat 10/24

6:15 am-10:50 am

2 stops20h 35m

Cardiff Wales

Sun 11/1

5:30 pm-11:45 am

1 stop26h 15m

$1,113

San FranciscoCardiff

SFO - CWL

SFOCWL

San Francisco

Sat 10/24

11:30 am-6:00 pm

2 stops22h 30m

Cardiff Wales

Sat 10/31

5:30 pm-5:21 pm

2 stops30h 51m

$1,122

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first
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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

Can stopping save me money on San Francisco to Cardiff flights?

You could potentially save up to 9% on your flight if you consider stops on a San Francisco to Cardiff flight.

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 round-trip 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 15m

Direct flights

None
The fastest flight from San Francisco to Cardiff takes 20h 15m
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 20h 15m.

  • 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 are updated daily.

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, 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 travel and health documents required for your trip to Cardiff Wales Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Cardiff Wales Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from San Francisco to Cardiff for you.

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

All flight searches from San Francisco to Cardiff on momondo can be filtered to show those which offer flexible booking policies.

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

momondo provides multiple filters to help you find the best flight to Cardiff from San Francisco. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

If you are not ready to book a flight from San Francisco to Cardiff now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Cardiff and let you know when they change.

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Cabin classes currently available on flights to Cardiff

List of cabin classes available on flights landing in Cardiff. Availability may vary depending on flight origin and airline.
First Class to Cardiff
Business Class to Cardiff