£364 Cheap Flights from Denver (DEN) to Cardiff (CWL)

View £364 flight on Sun, 20 Sept 2026Opens in a new window

Flight 1

Popular airlines from Denver International Airport (DEN) to Cardiff International Airport (CWL)

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Cheap Flights from Denver (DEN) to Cardiff (CWL)

Prices were available within the past 7 days and start at £364 for one-way flights and £853 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

KLM
Mon, 7 Sept - Mon, 21 Sept
DEN
Denver
CWL
Cardiff
£853 Return, found 6 days ago
£853
Return
found 6 days ago
Select KLM flight, departing Mon, 7 Sept from Denver to Cardiff, returning Mon, 21 Sept, priced at £853 found 6 days ago
KLM
Mon, 7 Sept - Mon, 21 Sept
DEN
Denver
CWL
Cardiff
£890 Return, found 6 days ago
£890
Return
found 6 days ago
Select KLM flight, departing Mon, 7 Sept from Denver to Cardiff, returning Mon, 21 Sept, priced at £890 found 6 days ago
KLM
Mon, 7 Sept - Mon, 21 Sept
DEN
Denver
CWL
Cardiff
£896 Return, found 6 days ago
£896
Return
found 6 days ago
Select KLM flight, departing Mon, 7 Sept from Denver to Cardiff, returning Mon, 21 Sept, priced at £896 found 6 days ago
KLM
Mon, 7 Sept - Mon, 21 Sept
DEN
Denver
CWL
Cardiff
£931 Return, found 6 days ago
£931
Return
found 6 days ago
Select KLM flight, departing Mon, 7 Sept from Denver to Cardiff, returning Mon, 21 Sept, priced at £931 found 6 days ago
Air France
Mon, 7 Sept - Mon, 21 Sept
DEN
Denver
CWL
Cardiff
£933 Return, found 6 days ago
£933
Return
found 6 days ago
Select Air France flight, departing Mon, 7 Sept from Denver to Cardiff, returning Mon, 21 Sept, priced at £933 found 6 days ago
KLM
Mon, 7 Sept - Mon, 21 Sept
DEN
Denver
CWL
Cardiff
£937 Return, found 6 days ago
£937
Return
found 6 days ago
Select KLM flight, departing Mon, 7 Sept from Denver to Cardiff, returning Mon, 21 Sept, priced at £937 found 6 days ago
Air France
Mon, 7 Sept - Mon, 21 Sept
DEN
Denver
CWL
Cardiff
£954 Return, found 6 days ago
£954
Return
found 6 days ago
Select Air France flight, departing Mon, 7 Sept from Denver to Cardiff, returning Mon, 21 Sept, priced at £954 found 6 days ago
Virgin Atlantic
Mon, 7 Sept - Mon, 21 Sept
DEN
Denver
CWL
Cardiff
£958 Return, found 6 days ago
£958
Return
found 6 days ago
Select Virgin Atlantic flight, departing Mon, 7 Sept from Denver to Cardiff, returning Mon, 21 Sept, priced at £958 found 6 days ago
KLM
Mon, 7 Sept - Mon, 21 Sept
DEN
Denver
CWL
Cardiff
£974 Return, found 6 days ago
£974
Return
found 6 days ago
Select KLM flight, departing Mon, 7 Sept from Denver to Cardiff, returning Mon, 21 Sept, priced at £974 found 6 days ago
Virgin Atlantic
Mon, 7 Sept - Mon, 21 Sept
DEN
Denver
CWL
Cardiff
£974 Return, found 6 days ago
£974
Return
found 6 days ago
Select Virgin Atlantic flight, departing Mon, 7 Sept from Denver to Cardiff, returning Mon, 21 Sept, priced at £974 found 6 days ago

Frequently asked questions

Which airlines fly direct from Denver, CO (DEN-Denver Intl.) to Cardiff (CWL-Cardiff Intl.)?
Enter DEN to CWL and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
How do I find cheap flights from Denver, CO (DEN-Denver Intl.) to Cardiff (CWL-Cardiff Intl.)?
To find a cheap flight from Denver, CO (DEN-Denver Intl.) to Cardiff (CWL-Cardiff Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Denver, CO (DEN-Denver Intl.) to Cardiff (CWL-Cardiff Intl.)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
How many flights per day from Denver, CO (DEN-Denver Intl.) to Cardiff (CWL-Cardiff Intl.)?
There are approximately 22 connecting flights per day from Denver International (DEN) to Cardiff International (CWL). Some common connection points include Hartsfield-Jackson Atlanta International (ATL), Minneapolis - St. Paul International (MSP), and Detroit Metropolitan Wayne County (DTW).
What is the earliest flight from Denver, CO (DEN-Denver Intl.) to Cardiff (CWL-Cardiff Intl.)?
The earliest flight from Denver, CO (DEN-Denver Intl.) to Cardiff (CWL-Cardiff Intl.) typically departs at approximately 12:35 AM local time. This service is operated by Delta and KLM, and it is a seasonal service active in April. An early departure like this can help you maximise your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Denver, CO (DEN-Denver Intl.) to Cardiff (CWL-Cardiff Intl.)?
You'll typically find the most flights from Denver, CO (DEN-Denver Intl.) to Cardiff (CWL-Cardiff Intl.) on a Wednesday, with around 54 flights available. This gives you a good selection for your travel plans. Major airlines on this route include Delta Air Lines and British Airways.
What are the most popular departure times for flights from Denver, CO (DEN-Denver Intl.) to Cardiff (CWL-Cardiff Intl.)?
The most popular departure times for flights from Denver Intl. (DEN) to Cardiff Intl. (CWL) are between 9am and 12pm. About 41% of passengers prefer this time. Many major carriers, including Delta and KLM, offer flights during this window. This timing works well because it allows for a comfortable morning departure, getting you to your destination with plenty of time left in the day.
How long does it take to fly from Denver, CO (DEN-Denver Intl.) to Cardiff (CWL-Cardiff Intl.)?
Flights from DEN to CWL with one stop typically take around 20 hours 20 minutes, covering approximately 4,561 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Denver, CO (DEN-Denver Intl.) to Cardiff (CWL-Cardiff Intl.)?
Select the "Business class" and "First class" filters when looking for DEN to CWL flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a Denver, CO (DEN-Denver Intl.) to Cardiff (CWL-Cardiff Intl.) flight with Expedia?
It's easy to earn miles on a Denver, CO (DEN-Denver Intl.) to Cardiff (CWL-Cardiff Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia. *Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Cardiff from Denver Intl. (DEN)?
If you're planning to travel to Cardiff from Denver Intl. (DEN), you can fly typically into Cardiff Intl. (CWL) Some flights may connect through major hubs like Hartsfield-Jackson Atlanta Intl. (ATL), Minneapolis - St. Paul Intl. (MSP), Detroit Metropolitan Wayne County (DTW) before reaching Cardiff. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Denver, CO (DEN-Denver Intl.) to Cardiff (CWL-Cardiff Intl.) at the last minute?
Typically, booking a last minute flight from Denver, CO (DEN-Denver Intl.) to Cardiff (CWL-Cardiff Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Denver, CO (DEN-Denver Intl.) to Cardiff (CWL-Cardiff Intl.) flight and hotel package?
Securing a Denver, CO (DEN-Denver Intl.) to Cardiff (CWL-Cardiff Intl.) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Denver, CO (DEN-Denver Intl.) to Cardiff (CWL-Cardiff Intl.)?
If you booked your Denver, CO (DEN-Denver Intl.) to Cardiff (CWL-Cardiff Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Denver Intl.
Destination airport
Cardiff Intl.
Return price
£853
Distance
7296 km

Book with confidence

Compare flights from Denver to Cardiff easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from Denver to Cardiff. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to Cardiff Intl. in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Denver Intl. to Cardiff Intl..  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from Denver Intl. (DEN) to Cardiff Intl. (CWL)

The easiest way to view the best deals on flights from Denver to Cardiff today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Denver Intl. to Cardiff Intl. start at just £853 and range up to £974.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near Denver and Cardiff
  • booking your flight during September, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your Denver to Cardiff flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Denver Intl. to Cardiff Intl. for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Compare flights from Denver to Cardiff easily and book with confidence

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*Available to Expedia members.