HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Cardiff

$825+ Cheap flights from San Francisco (SFO) to Cardiff (CWL)

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 8/12. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — CWL
Aug 4 — Aug 111
Mon 8/4
Mon 8/11
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from San Francisco to Cardiff 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.

Cheap flight deals from San Francisco to Cardiff

Discover tips and strategies to find the most affordable flight options for your journey from San Francisco (SFO) to Cardiff (CWL). 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 July 30, 2025.

Round-trip from

$825
(KLM)
From San Francisco to Cardiff Wales
Search Deals

Find flight deals from San Francisco to Cardiff

Cheapest flights from San Francisco to Cardiff
Explore the most affordable flight options available from San Francisco to Cardiff. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 30, 2025.

This KLM deal was found by Cheapflights users on 7/30. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/121:45 pmSFO - CWL
1 stop35h 30mKLM
Mon 8/255:15 pmCWL - SFO
1 stop26h 30mKLM
Deal found 7/30$825
This Delta deal was found by Cheapflights users on 7/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/1112:40 amSFO - CWL
2 stops24h 35mDelta
Mon 8/259:50 amCWL - SFO
2 stops21h 43mDelta
Deal found 7/30$970
This Mytrip deal was found by Cheapflights users on 7/30. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/47:10 amSFO - CWL
3 stops28h 05mMultiple Airlines
Wed 9/108:30 pmCWL - SFO
2 stops26h 00mMultiple Airlines
Deal found 7/30$1,133

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated July 30, 2025.
Use the filters below to find and compare flights from San Francisco to Cardiff that are best for you.

Fly from

San Francisco

Fly to

Cardiff

Route

Depart

Return

Price

San FranciscoCardiff

SFO - CWL

SFOCWL

San Francisco

Tue 8/12

1:45 pm-9:15 am

1 stop35h 30m

Cardiff Wales

Mon 8/25

5:15 pm-11:45 am

1 stop26h 30m

$825

San FranciscoCardiff

SFO - CWL

SFOCWL

San Francisco

Mon 8/11

12:40 am-9:15 am

2 stops24h 35m

Cardiff Wales

Mon 8/25

9:50 am-11:33 pm

2 stops21h 43m

$970

San FranciscoCardiff

SFO - CWL

SFOCWL

San Francisco

Thu 9/4

7:10 am-7:15 pm

3 stops28h 05m

Cardiff Wales

Wed 9/10

8:30 pm-2:30 pm

2 stops26h 00m

$1,133

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

Best time to book a flight from San Francisco to Cardiff

Have a flexible travel schedule? Discover the best time to fly to Cardiff from San Francisco 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.

Reviews of airlines servicing Cardiff

Get insights into the airlines that provide service to Cardiff. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Cardiff. Reviews last updated July 30, 2025.
Get a feel of what it's like to fly with Delta and KLM from San Francisco to Cardiff by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,980 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Entertainment

7.9

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,980 reviews
Delta
8.0
Very good
7,980 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Entertainment

7.9

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
KLM
7.8
Good
1,383 reviews
Delta
8.0
Very good
7,980 reviews

Boarding

8.2

Comfort

7.9

Food

7.3

Entertainment

7.9

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

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

  • What are the cheapest airlines flying from San Francisco to Cardiff round-trip?

    According to our current data, KLM ($825), and Delta ($970) offers the cheapest pricing from San Francisco to Cardiff.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from San Francisco to Cardiff 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 San Francisco to Cardiff?

    Currently, February is the cheapest month in which you can book a flight from San Francisco to Cardiff (average of $773). Flying from San Francisco to Cardiff in June is currently the most expensive (average of $1,622). 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 Cardiff?

Book flights to Cardiff if you plan to visit one of these locations
Barry

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.

Alternative routes for San Francisco to Cardiff

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to Manchester flights
San Francisco to Manchester flights
Ontario to Manchester flights
San Jose to Manchester flights
Burbank to Manchester flights
Santa Ana to Manchester flights
San Diego to Manchester flights
Las Vegas to Manchester flights
Sacramento to Manchester flights
Oakland to Manchester flights
Medford to Manchester flights
Long Beach to Manchester flights
Los Angeles to Bristol flights
San Diego to Cardiff flights
San Jose to Bristol flights
San Francisco to Bristol flights
Santa Ana to Bristol flights
Los Angeles to Cardiff flights
San Diego to Bristol flights
Reno to Manchester flights
Santa Ana to Cardiff flights
Santa Barbara to Manchester flights
Oakland to Cardiff flights
Oakland to Bristol flights
Santa Rosa to Manchester flights

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.