$476 Cheap Flights from San Francisco (SFO) to Cardiff (CWL)

View $476 flight on Sun, Jan 18, 2026Opens in a new window

Popular airlines from San Francisco Intl. Airport (SFO) to Cardiff International Airport (CWL)

Cheap Flights from San Francisco to Cardiff (SFO-CWL)

Prices were available within the past 7 days and start at $476 for one-way flights and $775 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Mon, Nov 10 - Wed, Nov 26
SFO
San Francisco
CWL
Cardiff
$775 Roundtrip, found 3 days ago
$775
Roundtrip
found 3 days ago
Select Delta flight, departing Mon, Nov 10 from San Francisco to Cardiff, returning Wed, Nov 26, priced at $775 found 3 days ago
Virgin Atlantic
Tue, Dec 30 - Tue, Jan 13
SFO
San Francisco
CWL
Cardiff
$775 Roundtrip, found 3 days ago
$775
Roundtrip
found 3 days ago
Select Virgin Atlantic flight, departing Tue, Dec 30 from San Francisco to Cardiff, returning Tue, Jan 13, priced at $775 found 3 days ago
Virgin Atlantic
Tue, Dec 9 - Tue, Dec 23
SFO
San Francisco
CWL
Cardiff
$779 Roundtrip, found 3 days ago
$779
Roundtrip
found 3 days ago
Select Virgin Atlantic flight, departing Tue, Dec 9 from San Francisco to Cardiff, returning Tue, Dec 23, priced at $779 found 3 days ago
Delta
Wed, Jan 14 - Mon, Jan 19
SFO
San Francisco
CWL
Cardiff
$784 Roundtrip, found 13 hours ago
$784
Roundtrip
found 13 hours ago
Select Delta flight, departing Wed, Jan 14 from San Francisco to Cardiff, returning Mon, Jan 19, priced at $784 found 13 hours ago
Delta
Sun, Dec 7 - Tue, Dec 16
SFO
San Francisco
CWL
Cardiff
$785 Roundtrip, found 3 days ago
$785
Roundtrip
found 3 days ago
Select Delta flight, departing Sun, Dec 7 from San Francisco to Cardiff, returning Tue, Dec 16, priced at $785 found 3 days ago
Virgin Atlantic
Mon, Jan 26 - Tue, Feb 10
SFO
San Francisco
CWL
Cardiff
$787 Roundtrip, found 3 days ago
$787
Roundtrip
found 3 days ago
Select Virgin Atlantic flight, departing Mon, Jan 26 from San Francisco to Cardiff, returning Tue, Feb 10, priced at $787 found 3 days ago
Virgin Atlantic
Tue, Dec 30 - Fri, Jan 16
SFO
San Francisco
CWL
Cardiff
$792 Roundtrip, found 3 days ago
$792
Roundtrip
found 3 days ago
Select Virgin Atlantic flight, departing Tue, Dec 30 from San Francisco to Cardiff, returning Fri, Jan 16, priced at $792 found 3 days ago
Delta
Wed, Jan 14 - Mon, Jan 19
SFO
San Francisco
CWL
Cardiff
$794 Roundtrip, found 13 hours ago
$794
Roundtrip
found 13 hours ago
Select Delta flight, departing Wed, Jan 14 from San Francisco to Cardiff, returning Mon, Jan 19, priced at $794 found 13 hours ago
KLM
Sun, Nov 9 - Wed, Nov 26
SFO
San Francisco
CWL
Cardiff
$805 Roundtrip, found 3 days ago
$805
Roundtrip
found 3 days ago
Select KLM flight, departing Sun, Nov 9 from San Francisco to Cardiff, returning Wed, Nov 26, priced at $805 found 3 days ago
Air France
Tue, Sep 15 - Sun, Sep 20
SFO
San Francisco
CWL
Cardiff
$922 Roundtrip, found 4 days ago
$922
Roundtrip
found 4 days ago
Select Air France flight, departing Tue, Sep 15 from San Francisco to Cardiff, returning Sun, Sep 20, priced at $922 found 4 days ago

Alternative airports near Cardiff

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Bristol Intl. BRS. Cheapest option available. Average driving time to city center is 1 hour 0 minutes. Flights from $777
BRS
Bristol Intl.
Cheapest
Average driving time to city center1 h 0 min
Flights from $777

Frequently asked questions

How much does a flight from San Francisco Intl. Airport (SFO) to Cardiff Intl. Airport (CWL) cost?
Get a cheap one-way flight from $476 or cheap return flight from $775 from San Francisco Intl. Airport (SFO) to Cardiff Intl. Airport (CWL) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from San Francisco Intl. Airport (SFO) to Cardiff Intl. Airport (CWL)?
The cheapest month to fly from SFO to CWL is November, when demand is low. Off-peak season is often when airlines offer lower prices between these airports.
What is the cheapest airline that flies from San Francisco Intl. Airport (SFO) to Cardiff Intl. Airport (CWL)?
Expedia's filter tool lets you easily compare different airlines, departure times and fares all in one place. Choose your preferences, then sort by "Price (lowest to highest)" to find the carrier with the cheapest SFO to CWL flight.
How many flights per day from San Francisco Intl. Airport (SFO) to Cardiff Intl. Airport (CWL)?
Direct flights from San Francisco Intl. Airport (SFO) to Cardiff Intl. Airport (CWL) aren't available daily, so you'll have to take a flight with a layover. Explore your options with Expedia's filter tool. Enter your dates and select either "1 Stop" or "2+ Stops."
What day of the week has the most flights from SFO to CWL?
Friday is generally the busiest day for flights, while Tuesday is often the quietest.* Just remember that flight schedules can vary depending on a number of factors, such as the carrier and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from San Francisco Intl. Airport (SFO) to Cardiff Intl. Airport (CWL)?
To touch down at Cardiff Intl. Airport (CWL) on time, choose a flight that takes off from San Francisco Intl. Airport (SFO) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this hour.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from San Francisco Intl. Airport (SFO) to Cardiff Intl. Airport (CWL) last-minute?
Last-minute fares from SFO to CWL are typically more expensive. To lock in the cheapest rates, start looking for flights well in advance. That said, if you're flexible with your travel plans, you may land a cheap fare right before your journey.
Is it cheaper to book a SFO to CWL flight and hotel package?
Securing a SFO to CWL flight and hotel package is typically cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your trip all in one place. Pick from our extensive range of accommodations and then add car rentals, flights and activities to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from San Francisco Intl. Airport (SFO) to Cardiff Intl. Airport (CWL)?
If you booked your SFO to CWL flight within the last 24 hours, you may be able to cancel or modify it without any fees. Depending on the airline and the type of fare you purchased, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, visit our Customer Service portal for further details.

Travel information

Origin airport
San Francisco Intl.
Destination airport
Cardiff Intl.
Airlines serving
Delta, KLM, Virgin Atlantic
Roundtrip price
$774
Distance
5270 mi

Book with confidence

San Francisco to Cardiff Flights

The cheapest times to fly from San Francisco to Cardiff

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from San Francisco to Cardiff are during the month of November. You can find some of the cheapest flights from San Francisco to Cardiff with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from San Francisco to Cardiff

Sunday is one of the best days to book for cheap flights from San Francisco to Cardiff: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from San Francisco to Cardiff

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from San Francisco to Cardiff in 2025. You can also book with separate airlines for your outbound and return journeys, from $476 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap San Francisco to Cardiff flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your San Francisco to Cardiff airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

San Francisco to Cardiff Flights

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*Available to One Key members.