HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
San Francisco

$1,107+ Cheap flights from Cardiff (CWL) to San Francisco (SFO)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/18. Fares are subject to change and may not be available on all flights or dates of travel.
CWL — SFO
Nov 28 — Dec 51
Fri 11/28
Fri 12/5
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Cardiff to San Francisco with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Find flight deals from Cardiff to San Francisco

Cheapest flights from Cardiff to San Francisco
Explore the most affordable flight options available from Cardiff to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 29, 2025.

This Netflights deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Netflights is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1810:20 amCWL - SFO
2 stops20h 53mMultiple Airlines
Thu 12/255:55 amSFO - CWL
2 stops26h 50mMultiple Airlines
Deal found 10/27$1,107
This TravelUp deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1810:20 amCWL - SFO
2 stops20h 53mVirgin Atlantic
Thu 12/251:55 pmSFO - CWL
1 stop18h 50mVirgin Atlantic
Deal found 10/27$1,125
This TravelUp deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1210:20 amCWL - SFO
2 stops39h 44mVirgin Atlantic
Fri 12/1911:40 amSFO - CWL
2 stops38h 05mVirgin Atlantic
Deal found 10/28$1,243
This Air France deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/185:25 pmCWL - SFO
1 stop26h 25mKLM
Thu 12/251:55 pmSFO - CWL
1 stop18h 50mKLM
Deal found 10/27$1,264
This Trip.com deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/125:15 pmCWL - SFO
2 stops30h 20mMultiple Airlines
Fri 12/1911:20 amSFO - CWL
3 stops62h 30mMultiple Airlines
Deal found 10/28$1,316
This TravelUp deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/125:25 pmCWL - SFO
1 stop26h 25mKLM
Fri 12/191:55 pmSFO - CWL
1 stop19h 00mKLM
Deal found 10/28$1,387

Cheap flight deals from Cardiff to San Francisco

Discover tips and strategies to find the most affordable flight options for your journey from Cardiff (CWL) to San Francisco (SFO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated October 29, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
1 star

Round-trip from

$1,107
(Netflights)
Provider with most accurate pricing for Cardiff Wales-San Francisco flight deals.
Search Deals
Provider most trusted by Cheapflights users for Cardiff Wales-San Francisco flights.
Search Deals
From Cardiff Wales to San Francisco
Search Deals

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated October 29, 2025.
Use the filters below to find and compare flights from Cardiff to San Francisco that are best for you.

Fly from

Cardiff

Fly to

San Francisco

Route

Depart

Return

Price

CardiffSan Francisco

CWL - SFO

CWLSFO

Cardiff Wales

Thu 12/18

10:20 am-11:13 pm

2 stops20h 53m

San Francisco

Thu 12/25

5:55 am-4:45 pm

2 stops26h 50m

$1,107

CardiffSan Francisco

CWL - SFO

CWLSFO

Cardiff Wales

Thu 3/26

10:20 am-12:50 pm

1 stop33h 30m

San Francisco

Mon 3/30

1:00 pm-4:45 pm

2 stops19h 45m

$1,112

CardiffSan Francisco

CWL - SFO

CWLSFO

Cardiff Wales

Thu 12/18

10:20 am-11:13 pm

2 stops20h 53m

San Francisco

Thu 12/25

1:55 pm-4:45 pm

1 stop18h 50m

$1,125

CardiffSan Francisco

CWL - SFO

CWLSFO

Cardiff Wales

Thu 3/26

5:25 pm-12:50 pm

1 stop26h 25m

San Francisco

Mon 3/30

1:45 pm-4:45 pm

1 stop19h 00m

$1,165

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/27

  • Most accurate provider: When it comes to deals on Cardiff-San Francisco flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Cardiff-San Francisco flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Cardiff-San Francisco flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Cardiff-San Francisco flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Cardiff-San Francisco flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Cardiff to San Francisco

Have a flexible travel schedule? Discover the best time to fly to San Francisco from Cardiff with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Cardiff to San Francisco

What is the cheapest month to book a flight from Cardiff to San Francisco?

Currently, February is the cheapest month in which you can book a flight from Cardiff to San Francisco (average of $587). Flying from Cardiff to San Francisco in June is currently the most expensive (average of $959). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Find useful and relevant information for your journey from Cardiff to San Francisco. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Cardiff to San Francisco?

    A quick flight from Cardiff to San Francisco can take about 33h 30m. Delta provides one of the quickest options available for as low as $1,112. The distance from Cardiff to San Francisco is about 5267 mi.

  • Can I find deals for flights from Cardiff to San Francisco that include hotel bookings?

    Yes. In addition to deals on Cardiff to San Francisco flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Cardiff to San Francisco?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Cardiff to San Francisco.

  • Can I find deals for business class flights from Cardiff to San Francisco?

    Yes. Cheapflights offers flight deals from Cardiff to San Francisco by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Cardiff to San Francisco?

    Currently, February is the cheapest month in which you can book a flight from Cardiff to San Francisco (average of $587). Flying from Cardiff to San Francisco in June is currently the most expensive (average of $959). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
Roseville
South San Francisco
Santa Cruz
Livermore
Turlock
Watsonville
Sunnyvale
Santa Clara
Antioch
Manteca
Vallejo
Hollister
Vacaville
San Bruno
Foster City
Redwood City
Union City
Fairfield
Burlingame
Lodi

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.