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Cheap flights from Cardiff to San Francisco from $836

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Cardiff to San Francisco departing on 11/3. 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 Cardiff to San Francisco

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
10:20 am - 11:45 am
CWL
-
SFO
33h 25m
1 stop
Delta Logo
9:00 am - 5:00 pm
SFO
-
CWL
24h 00m
2 stops
$836Delta
Tue, Nov 3 - Wed, Nov 11
Delta Logo
10:20 am - 10:39 pm
CWL
-
SFO
20h 19m
2 stops
Delta Logo
9:00 pm - 5:00 pm
SFO
-
CWL
36h 00m
2 stops
$841Delta
Sat, Nov 7 - Thu, Nov 12
Multiple Airlines Logo
10:10 pm - 9:55 pm
CWL
-
SFO
31h 45m
3 stops
Multiple Airlines Logo
8:10 am - 10:50 pm
SFO
-
CWL
30h 40m
3 stops
$901Multiple Airlines
Mon, Aug 10 - Mon, Aug 17
KLM Logo
5:15 pm - 11:45 am
CWL
-
SFO
26h 30m
1 stop
KLM Logo
1:45 pm - 4:45 pm
SFO
-
CWL
19h 00m
1 stop
$926KLM
Thu, Aug 13 - Wed, Aug 19
Multiple Airlines Logo
9:45 am - 11:45 am
CWL
-
SFO
34h 00m
1 stop
Multiple Airlines Logo
7:00 am - 9:15 am
SFO
-
CWL
18h 15m
2 stops
$933Multiple Airlines
Thu, Aug 13 - Wed, Aug 19
Multiple Airlines Logo
9:45 am - 11:58 pm
CWL
-
SFO
22h 13m
2 stops
Multiple Airlines Logo
7:00 am - 9:15 am
SFO
-
CWL
18h 15m
2 stops
$942Multiple Airlines
Thu, Aug 13 - Wed, Aug 19
Multiple Airlines Logo
10:10 pm - 9:55 pm
CWL
-
SFO
31h 45m
3 stops
Multiple Airlines Logo
5:35 pm - 10:50 pm
SFO
-
CWL
21h 15m
1 stop
$968Multiple Airlines
Mon, Aug 10 - Mon, Aug 17
Multiple Airlines Logo
10:10 pm - 9:55 pm
CWL
-
SFO
31h 45m
3 stops
Multiple Airlines Logo
6:00 am - 10:15 am
SFO
-
CWL
20h 15m
2 stops
$980Multiple Airlines
Mon, Aug 10 - Mon, Aug 17
Air France Logo
5:15 pm - 11:45 am
CWL
-
SFO
26h 30m
1 stop
Air France Logo
1:45 pm - 4:45 pm
SFO
-
CWL
19h 00m
1 stop
$990Air France
Sun, Aug 9 - Sun, Aug 16
Delta Logo
9:45 am - 11:45 am
CWL
-
SFO
34h 00m
1 stop
Delta Logo
1:45 pm - 5:05 pm
SFO
-
CWL
19h 20m
1 stop
$993Delta
Wed, Jul 29 - Fri, Aug 14

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Air France flights from Cardiff to San Francisco

Our best Air France deals on Cardiff to San Francisco flight tickets
Air France
Aug 9
CWL5:15 pmCardiff Wales
26h 30m
1 stop
SFO11:45 amSan Francisco
Aug 16
SFO1:45 pmSan Francisco
19h 00m
1 stop
CWL4:45 pmCardiff Wales
$990
Air France
Aug 9
CWL5:15 pmCardiff Wales
26h 30m
1 stop
SFO11:45 amSan Francisco
Aug 16
SFO1:45 pmSan Francisco
19h 00m
1 stop
CWL4:45 pmCardiff Wales
$1,055
Air France
Aug 10
CWL5:15 pmCardiff Wales
26h 30m
1 stop
SFO11:45 amSan Francisco
Aug 17
SFO1:45 pmSan Francisco
19h 00m
1 stop
CWL4:45 pmCardiff Wales
$1,056

Virgin Atlantic flights from Cardiff to San Francisco

Our best Virgin Atlantic deals on Cardiff to San Francisco flight tickets
Virgin Atlantic
Aug 9
CWL5:15 pmCardiff Wales
30h 58m
2 stops
SFO4:13 pmSan Francisco
Aug 16
SFO8:00 amSan Francisco
24h 45m
2 stops
CWL4:45 pmCardiff Wales
$1,030
Virgin Atlantic
Aug 9
CWL5:15 pmCardiff Wales
38h 42m
2 stops
SFO11:57 pmSan Francisco
Aug 16
SFO6:00 amSan Francisco
26h 45m
2 stops
CWL4:45 pmCardiff Wales
$1,099

momondo Fare Finder

 
Customize your flight search to find flights from Cardiff to San Francisco 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 June 28, 2026.
Use the filters below to find and compare flights from Cardiff to San Francisco that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

CardiffSan Francisco

CWL - SFO

CWLSFO

Cardiff Wales

Tue 11/3

10:20 am-11:45 am

1 stop33h 25m

San Francisco

Wed 11/11

9:00 am-5:00 pm

2 stops24h 00m

$836

CardiffSan Francisco

CWL - SFO

CWLSFO

Cardiff Wales

Sat 11/7

10:20 am-10:39 pm

2 stops20h 19m

San Francisco

Thu 11/12

9:00 pm-5:00 pm

2 stops36h 00m

$841

CardiffSan Francisco

CWL - SFO

CWLSFO

Cardiff Wales

Mon 8/10

10:10 pm-9:55 pm

3 stops31h 45m

San Francisco

Mon 8/17

8:10 am-10:50 pm

3 stops30h 40m

$901

CardiffSan Francisco

CWL - SFO

CWLSFO

Cardiff Wales

Thu 8/13

5:15 pm-11:45 am

1 stop26h 30m

San Francisco

Wed 8/19

1:45 pm-4:45 pm

1 stop19h 00m

$926

CardiffSan Francisco

CWL - SFO

CWLSFO

Cardiff Wales

Thu 8/13

9:45 am-11:45 am

1 stop34h 00m

San Francisco

Wed 8/19

7:00 am-9:15 am

2 stops18h 15m

$933
Quickest round-trip

CardiffSan Francisco

CWL - SFO

CWLSFO

Cardiff Wales

Thu 8/13

9:45 am-11:58 pm

2 stops22h 13m

San Francisco

Wed 8/19

7:00 am-9:15 am

2 stops18h 15m

$942

CardiffSan Francisco

CWL - SFO

CWLSFO

Cardiff Wales

Mon 8/10

10:10 pm-9:55 pm

3 stops31h 45m

San Francisco

Mon 8/17

5:35 pm-10:50 pm

1 stop21h 15m

$968

CardiffSan Francisco

CWL - SFO

CWLSFO

Cardiff Wales

Mon 8/10

10:10 pm-9:55 pm

3 stops31h 45m

San Francisco

Mon 8/17

6:00 am-10:15 am

2 stops20h 15m

$980

CardiffSan Francisco

CWL - SFO

CWLSFO

Cardiff Wales

Sun 8/9

5:15 pm-11:45 am

1 stop26h 30m

San Francisco

Sun 8/16

1:45 pm-4:45 pm

1 stop19h 00m

$990

CardiffSan Francisco

CWL - SFO

CWLSFO

Cardiff Wales

Wed 7/29

9:45 am-11:45 am

1 stop34h 00m

San Francisco

Fri 8/14

1:45 pm-5:05 pm

1 stop19h 20m

$993

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 15 resultsSorted by cheapest first
1
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When to book flights from Cardiff to San Francisco

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

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

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

Fastest flight time

26h 30m

Direct flights

None
The fastest flight from Cardiff to San Francisco takes 26h 30m
There are no direct flights from Cardiff to San Francisco. There are no popular flight routes from Cardiff to San Francisco.
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Frequently asked questions about flying from Cardiff to San Francisco

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

    San Francisco is 5259.3 mi away from Cardiff Wales. By plane, this route typically takes 26h 30m.

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

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

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Cardiff Wales Airport to San Francisco Airport.

  • What documentation or ID do you need to fly to San Francisco Airport?

    The necessary travel and health documents for your San Francisco Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Frequently asked questions about flying from Cardiff to San Francisco

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

    Price Alerts will notify you by email when the price for flights to San Francisco from Cardiff 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 Cardiff to San Francisco with momondo?

    Plan your trips smart with the “Price Forecast” feature, which uses flight data to help you pick the best days to fly for the lowest fares. Our “Price Calendar” helps you get the most for your money by showing you when it’s most advantageous to fly. Curate your own travel experiences for less with “Explore”. Expert travel hacks to fuel your next adventure are a click away with “Discover” by momondo. Set up our “Price Alerts” to track fare changes and book when prices are at their lowest point.

  • 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.

Traveling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
Santa Cruz
Carmel-by-the-Sea
Modesto
Bodega Bay
South San Francisco
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Fremont
Hayward
Roseville
Walnut Creek
Santa Clara
Berkeley
Vallejo
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Sunnyvale
Big Sur
Burlingame
Daly City
Milpitas
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Why use momondo?

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

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 Cardiff to San Francisco for you.

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

Flights from Cardiff to San Francisco with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

Once you have performed a search for Cardiff to San Francisco flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Yes momondo offers price alerts on flights to San Francisco from Cardiff. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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