HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Cardiff

Find cheap KLM flights to Cardiff

CMH — CWL
Aug 26 — Sep 21
Wed 8/26
Wed 9/2
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Leverage Cheapflights for Your Next Trip

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 KLM flight deals to Cardiff

Cheapest KLM flights from USA to Cardiff
Explore the most affordable KLM flight options available from USA to Cardiff. Find the lowest fares with prices last updated on July 27, 2026.

This KLM deal was found by Cheapflights users on 7/26. 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.
Sun 8/164:45 pm
BOS
-
CWL
1 stop11h 30m
KLM
Wed 8/269:45 am
CWL
-
BOS
2 stops17h 58m
KLM
Deal found 7/26$1,173
This KLM deal was found by Cheapflights users on 7/26. 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.
Sun 8/91:34 pm
BOS
-
CWL
2 stops14h 41m
KLM
Tue 8/259:45 am
CWL
-
BOS
2 stops17h 58m
KLM
Deal found 7/26$1,177
This KLM deal was found by Cheapflights users on 7/27. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/316:10 pm
IAD
-
CWL
1 stop17h 35m
KLM
Wed 9/99:45 am
CWL
-
IAD
1 stop10h 50m
KLM
Deal found 7/27$1,185

Flights to Cardiff with KLM at a glance

Find detailed information about KLM flights from USA to Cardiff. Explore the options provided by KLM to plan your journey from USA to Cardiff. Data last updated July 27, 2026.

Round-trip from

$1,077

One-way from

$533
KLM
  • KLM
  • 12/1-12/6
  • 3 total stops
  • 43h 15m total
  • USA to Cardiff
Search Deals
KLM
  • KLM
  • 9/8
  • 1 total stop
  • 18h 05m total
  • USA to Cardiff
Search Deals

Cheapflights Insights

Find cheap KLM flights to Cardiff

How long is the flight to Cardiff with KLM?

On average, KLM flights from the United States to Cardiff take 11 hours 31 minutes. Flights to Cardiff from other popular cities in the United States will vary in length. Below are a few examples of popular routes and their flight times.

FAQs about flights to Cardiff with KLM

  • Is KLM the cheapest airline for a flight to Cardiff?

    Flight prices will depend on many factors like date, time and cabin class so it is worth comparing flights before booking. Based on Cheapflights data the cheapest average return price for flights to Cardiff tends to be with KLM.

  • Are there alternative airlines other than KLM that fly to Cardiff?

    Delta is the only alternative to KLM when flying to Cardiff.

Reviews of KLM

See what Cheapflights users have to say about their KLM experience.
KLM
7.8
Good
1,550 reviews
Overview

Comfort

7.7

Crew

8.4

Boarding

7.8

Entertainment

7.2

Food

7.3

Popular KLM flights

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

Other airports near Cardiff Wales

Other Cardiff travelers fly to these airports near Cardiff Wales.
Flights to Swansea Fairwood Comm Airport
Flights to Holyhead Anglesey Airport