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.

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.

$440 Cheap Flights from Cardiff to San Francisco in 2025/26

1 adult

0 bags

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Find the cheapest flights from Cardiff to San Francisco

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

9:45 am - 11:45 am

CWL

SFO

34h 00m1 stop

1:45 pm - 4:45 pm

SFO

CWL

19h 00m1 stop

$783Air France

Mon, Apr 20 - Tue, May 19

10:20 am - 11:25 pm

CWL

SFO

21h 05m2 stops

7:00 am - 9:50 am

SFO

CWL

18h 50m2 stops

$791Delta

Wed, Jan 21 - Wed, Jan 28

9:45 am - 10:34 pm

CWL

SFO

20h 49m2 stops

1:45 pm - 4:45 pm

SFO

CWL

19h 00m1 stop

$805Delta

Mon, Apr 20 - Tue, May 19

5:15 pm - 4:03 pm

CWL

SFO

30h 48m2 stops

6:00 am - 9:15 am

SFO

CWL

43h 15m2 stops

$807Virgin Atlantic

Mon, Apr 20 - Tue, May 19

10:20 am - 11:50 am

CWL

SFO

33h 30m1 stop

1:55 pm - 4:55 pm

SFO

CWL

19h 00m1 stop

$808KLM

Wed, Jan 21 - Wed, Jan 28

10:20 am - 11:50 am

CWL

SFO

33h 30m1 stop

7:00 am - 9:50 am

SFO

CWL

18h 50m2 stops

$825KLM

Thu, Jan 22 - Thu, Jan 29

10:20 am - 11:04 pm

CWL

SFO

20h 44m2 stops

11:40 am - 4:45 pm

SFO

CWL

21h 05m2 stops

$831Delta

Thu, Jan 22 - Thu, Jan 29

5:25 pm - 9:35 am

CWL

SFO

48h 10m2 stops

7:00 am - 9:50 am

SFO

CWL

18h 50m2 stops

$899Multiple Airlines

Thu, Jan 8 - Thu, Jan 22

10:20 am - 11:28 pm

CWL

SFO

45h 08m2 stops

1:55 pm - 4:45 pm

SFO

CWL

18h 50m1 stop

$927Multiple Airlines

Thu, Jan 8 - Thu, Jan 22

5:25 pm - 11:50 am

CWL

SFO

26h 25m1 stop

1:55 pm - 4:45 pm

SFO

CWL

18h 50m1 stop

$959KLM

Thu, Jan 8 - Thu, Jan 22

KLM flights from Cardiff to San Francisco

Our best KLM deals on Cardiff to San Francisco flight tickets

KLM

Jan 22

CWL5:25 pmCardiff Wales

26h 25m

1 stop

SFO11:50 amSan Francisco

Jan 29

SFO1:55 pmSan Francisco

18h 50m

1 stop

CWL4:45 pmCardiff Wales

$800

Find similar

KLM

Jan 21

CWL10:20 amCardiff Wales

33h 30m

1 stop

SFO11:50 amSan Francisco

Jan 28

SFO1:55 pmSan Francisco

19h 00m

1 stop

CWL4:55 pmCardiff Wales

$808

Find similar

KLM

Jan 22

CWL10:20 amCardiff Wales

18h 38m

2 stops

SFO8:58 pmSan Francisco

Jan 29

SFO9:00 amSan Francisco

16h 50m

2 stops

CWL9:50 amCardiff Wales

$813

Find similar

Delta flights from Cardiff to San Francisco

Our best Delta deals on Cardiff to San Francisco flight tickets

Delta

Jan 21

CWL10:20 amCardiff Wales

21h 05m

2 stops

SFO11:25 pmSan Francisco

Jan 28

SFO7:00 amSan Francisco

18h 50m

2 stops

CWL9:50 amCardiff Wales

$791

Find similar

Delta

Apr 20

CWL9:45 amCardiff Wales

20h 49m

2 stops

SFO10:34 pmSan Francisco

May 19

SFO1:45 pmSan Francisco

19h 00m

1 stop

CWL4:45 pmCardiff Wales

$805

Find similar

Delta

Jan 22

CWL10:20 amCardiff Wales

20h 44m

2 stops

SFO11:04 pmSan Francisco

Jan 29

SFO11:40 amSan Francisco

21h 05m

2 stops

CWL4:45 pmCardiff Wales

$831

Find similar

Fly from

Fly to

Route

Depart

Return

Price

CardiffSan Francisco

CWL - SFO

CWLSFO

Cardiff Wales

Mon 4/20

9:45 am-11:45 am

1 stop34h 00m

San Francisco

Tue 5/19

1:45 pm-4:45 pm

1 stop19h 00m

$783

CardiffSan Francisco

CWL - SFO

CWLSFO

Cardiff Wales

Wed 1/21

10:20 am-11:25 pm

2 stops21h 05m

San Francisco

Wed 1/28

7:00 am-9:50 am

2 stops18h 50m

$791

CardiffSan Francisco

CWL - SFO

CWLSFO

Cardiff Wales

Mon 4/20

9:45 am-10:34 pm

2 stops20h 49m

San Francisco

Tue 5/19

1:45 pm-4:45 pm

1 stop19h 00m

$805

CardiffSan Francisco

CWL - SFO

CWLSFO

Cardiff Wales

Mon 4/20

5:15 pm-4:03 pm

2 stops30h 48m

San Francisco

Tue 5/19

6:00 am-9:15 am

2 stops43h 15m

$807

CardiffSan Francisco

CWL - SFO

CWLSFO

Cardiff Wales

Wed 1/21

10:20 am-11:50 am

1 stop33h 30m

San Francisco

Wed 1/28

1:55 pm-4:55 pm

1 stop19h 00m

$808

CardiffSan Francisco

CWL - SFO

CWLSFO

Cardiff Wales

Thu 1/22

10:20 am-11:50 am

1 stop33h 30m

San Francisco

Thu 1/29

7:00 am-9:50 am

2 stops18h 50m

$825

CardiffSan Francisco

CWL - SFO

CWLSFO

Cardiff Wales

Thu 1/22

10:20 am-11:04 pm

2 stops20h 44m

San Francisco

Thu 1/29

11:40 am-4:45 pm

2 stops21h 05m

$831

CardiffSan Francisco

CWL - SFO

CWLSFO

Cardiff Wales

Thu 1/8

5:25 pm-9:35 am

2 stops48h 10m

San Francisco

Thu 1/22

7:00 am-9:50 am

2 stops18h 50m

$899

CardiffSan Francisco

CWL - SFO

CWLSFO

Cardiff Wales

Thu 1/8

10:20 am-11:28 pm

2 stops45h 08m

San Francisco

Thu 1/22

1:55 pm-4:45 pm

1 stop18h 50m

$927

CardiffSan Francisco

CWL - SFO

CWLSFO

Cardiff Wales

Thu 1/8

5:25 pm-11:50 am

1 stop26h 25m

San Francisco

Thu 1/22

1:55 pm-4:45 pm

1 stop18h 50m

$959

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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	21h 05m
Direct flights	None

The fastest flight from Cardiff to San Francisco takes 21h 05m

There are no direct flights from Cardiff to San Francisco. There are no popular flight routes from Cardiff to San Francisco.

Search flight deals

How far is Cardiff Wales to San Francisco by plane?
San Francisco is 5259.0 mi away from Cardiff Wales. By plane, this route typically takes 18h 38m.
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.

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.

Santa Cruz

Carmel-by-the-Sea

Modesto

Sonoma

Bodega Bay

Roseville

Hayward

Big Sur

Calistoga

Santa Clara

Walnut Creek

Berkeley

Daly City

Fremont

Half Moon Bay

Vallejo

Salinas

Livermore

Turlock

Sunnyvale

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.