Which airlines fly to Cardiff?

Aer Lingus, KLM and Delta are the most popular airlines that fly from United States to Cardiff on a routine basis, according to our data. You should be able to find flights to Cardiff with these airlines and other airlines flying from United States.

Delta Flights to Cardiff

The most popular airline for flights to Cardiff on momondo is Delta, which operates 8 flights in this direction every week. Most depart out of Amsterdam Schiphol, with the best deal for Delta flights to Cardiff being $793 (round-trip, Boston Logan Intl to Cardiff, momondo searches within the last 72 hours). In 7,968 Delta reviews, it is rated 7.9 by momondo users.

KLM Flights to Cardiff

KLM (7.7/10, 1,396 reviews) is also a popular choice for flights to Cardiff, with deals from as low as $766 from Boston Logan Intl, round-trip. With 7 KLM flights to Cardiff on average each week, prices can vary significantly by origin and availability.

How long does it take to fly to Cardiff?

If you’re flying from a popular airport in United States, such as Los Angeles or Miami, and flying into Cardiff, then you can expect flight times to average 19h and 12h, respectively.

$201 Cheap Flights to Cardiff in 2025/26

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from the United States to Cardiff

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

5:30 am - 7:40 pmBOS-CWL

33h 10m3 stops

10:25 pm - 7:12 pmCWL-BOS

25h 47m3 stops

$512Multiple Airlines

Find Deal

Fri, Nov 21 - Fri, Nov 28

9:00 pm - 10:00 pmJFK-CWL

20h 00m2 stops

10:30 am - 1:05 pmCWL-JFK

31h 35m2 stops

$535Multiple Airlines

Find Deal

Thu, Jan 15 - Thu, Jan 22

8:26 am - 4:55 pmEWR-CWL

28h 29m2 stops

10:20 am - 9:35 amCWL-EWR

27h 15m2 stops

$704Delta

Find Deal

Wed, Mar 11 - Tue, Mar 24

5:30 pm - 4:45 pmEWR-CWL

43h 15m2 stops

10:20 am - 11:03 pmCWL-EWR

16h 43m2 stops

$709Delta

Find Deal

Sat, Mar 14 - Tue, Mar 24

8:50 pm - 4:55 pmBOS-CWL

15h 05m1 stop

5:25 pm - 1:25 pmCWL-BOS

25h 00m1 stop

$738KLM

Find Deal

Fri, Jan 30 - Tue, Feb 3

5:45 pm - 9:50 amJFK-CWL

11h 05m1 stop

10:20 am - 7:20 pmCWL-JFK

14h 00m1 stop

$739KLM

Find Deal

Thu, Jan 15 - Thu, Jan 22

6:05 pm - 9:50 amIAD-CWL

10h 45m1 stop

5:30 pm - 4:05 pmCWL-IAD

27h 35m1 stop

$777Virgin Atlantic

Find Deal

Wed, Nov 12 - Sun, Nov 16

1:45 pm - 4:55 pmLAX-CWL

19h 10m1 stop

5:15 pm - 11:45 amCWL-LAX

26h 30m1 stop

$781Virgin Atlantic

Find Deal

Mon, Nov 10 - Mon, Nov 24

8:45 pm - 4:45 pmBOS-CWL

39h 00m2 stops

9:50 am - 6:25 pmCWL-BOS

13h 35m1 stop

$831Air France

Find Deal

Sun, Mar 29 - Wed, Apr 1

8:45 pm - 4:45 pmBOS-CWL

39h 00m2 stops

9:50 am - 11:38 pmCWL-BOS

18h 48m2 stops

$836Air France

Find Deal

Sun, Mar 29 - Wed, Apr 1

Fly from

Route

Depart

Return

Price

BostonCardiff

BOS - CWL

BOSCWL

Boston Logan Intl

Fri 11/21

5:30 am-7:40 pm

3 stops33h 10m

Cardiff Wales

Fri 11/28

10:25 pm-7:12 pm

3 stops25h 47m

$512

New YorkCardiff

JFK - CWL

JFKCWL

New York John F Kennedy Intl

Thu 1/15

9:00 pm-10:00 pm

2 stops20h 00m

Cardiff Wales

Thu 1/22

10:30 am-1:05 pm

2 stops31h 35m

$535

NewarkCardiff

EWR - CWL

EWRCWL

Newark

Wed 3/11

8:26 am-4:55 pm

2 stops28h 29m

Cardiff Wales

Tue 3/24

10:20 am-9:35 am

2 stops27h 15m

$704

NewarkCardiff

EWR - CWL

EWRCWL

Newark

Sat 3/14

5:30 pm-4:45 pm

2 stops43h 15m

Cardiff Wales

Tue 3/24

10:20 am-11:03 pm

2 stops16h 43m

$709

BostonCardiff

BOS - CWL

BOSCWL

Boston Logan Intl

Fri 1/30

8:50 pm-4:55 pm

1 stop15h 05m

Cardiff Wales

Tue 2/3

5:25 pm-1:25 pm

1 stop25h 00m

$738

New YorkCardiff

JFK - CWL

JFKCWL

New York John F Kennedy Intl

Thu 1/15

5:45 pm-9:50 am

1 stop11h 05m

Cardiff Wales

Thu 1/22

10:20 am-7:20 pm

1 stop14h 00m

$739

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Wed 11/12

6:05 pm-9:50 am

1 stop10h 45m

Cardiff Wales

Sun 11/16

5:30 pm-4:05 pm

1 stop27h 35m

$777

Los AngelesCardiff

LAX - CWL

LAXCWL

Los Angeles

Mon 11/10

1:45 pm-4:55 pm

1 stop19h 10m

Cardiff Wales

Mon 11/24

5:15 pm-11:45 am

1 stop26h 30m

$781

BostonCardiff

BOS - CWL

BOSCWL

Boston Logan Intl

Sun 3/29

8:45 pm-4:45 pm

2 stops39h 00m

Cardiff Wales

Wed 4/1

9:50 am-6:25 pm

1 stop13h 35m

$831

BostonCardiff

BOS - CWL

BOSCWL

Boston Logan Intl

Sun 3/29

8:45 pm-4:45 pm

2 stops39h 00m

Cardiff Wales

Wed 4/1

9:50 am-11:38 pm

2 stops18h 48m

$836

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

Cardiff flights insights and trends

Explore insights for your Cardiff flight to craft the best travel plan

Prices

Other information

What is the cheapest day to depart on your flight to Cardiff?

The cheapest day to depart on your flight to Cardiff is on a Thursday when prices can be found for as low as $905. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $1,575. These prices are subject to change though, so be sure to set up a Price Alert for flights to Cardiff.

What is the cheapest time of day to depart on your flight to Cardiff?

Flying to Cardiff from United States in the evening is the least expensive time of day to depart. momondo users have found prices as low as $882 when looking at flights departing in the evening. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $1,048 on average. Flights to Cardiff from United States in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

Cheapest flights to Cardiff Wales

Find the cheapest flights to Cardiff Wales from your nearest city or airport

Find flights from Los Angeles to Southampton

CHEAPEST MONTH TO FLY TO CARDIFF FROM LOS ANGELES	September	33% cheaper	Flying from Los Angeles to Cardiff costs on average just $790 in September
MOST EXPENSIVE MONTH TO FLY TO CARDIFF FROM LOS ANGELES	June	113% more expensive	It costs about $2,494 for flights to Cardiff from Los Angeles in June
MOST POPULAR MONTH TO FLY TO CARDIFF FROM LOS ANGELES	April	800% more users visited	More momondo users searched in flights to Cardiff from Los Angeles in April than any other month

Cheap Cardiff flight deals and tips

Summary info about Cardiff flight prices, duration and airlines

Best One-Way Price	$201
Best Round-Trip Price	$512
Fastest flight time	8h 50m
Popular in	January

The best one-way flight price to Cardiff from United States in the last 72 hours is $201 (New York John F Kennedy Intl to Cardiff Wales).

Search Deals

The best round-trip flight price to Cardiff from United States in the last 72 hours is $512 (Boston Logan Intl to Cardiff Wales).

Search Deals

The fastest flight to Cardiff from United States takes 8h 50m (Newark to Cardiff Wales).

Search Deals

January has the highest demand for flights to Cardiff, with a 5% price increase on average.

Search Deals

Frequently asked questions about flying to Cardiff

What is the cheapest month to fly to Cardiff?

The month of December is, on average, the cheapest month to fly to Cardiff from United States, with most prices found around $753. If you aren’t able to travel to Cardiff during the month of December, then flying in April is also cheap. Prices for this month can be found on momondo for an average of $793.

Is there an alternative airport near Cardiff?

Those flying to Cardiff could potentially find better pricing at Bristol Airport (21 mi from Cardiff city center), Swansea Fairwood Comm Airport (39 mi from Cardiff city center), Gloucestershire Airport (52 mi from Cardiff city center), Exeter Airport (52 mi from Cardiff city center) or Brize Norton Airport (71 mi from Cardiff city center) depending on the month and departure airport.

Is there a cheaper alternative to flying into Cardiff?

With an average price of $143 per person, Bristol Airport is the cheapest airport to fly into when planning your trip to Cardiff. This price can fluctuate based on where you are flying from. momondo’s Airport-to-Airport Pricing Tool can help users find the best prices.

What is the absolute cheapest flight to Cardiff?

In the past two weeks, users have booked deals to Cardiff for $20/person, which is 87% cheaper than the average flight to Cardiff. To find the cheapest price to Cardiff from your area, use momondo’s Airport-to-Airport Pricing Tool.

When did momondo last update prices for flights to Cardiff Wales Airport?

Prices for flights to Cardiff Wales Airport are updated daily.

How many operators does momondo search for flights to Cardiff Wales Airport?

The number of operators available for flights to Cardiff Wales Airport is 3 as of October 2025.

How old do you have to be to fly to Cardiff Wales Airport?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel to Cardiff Wales Airport.

What documentation or ID do you need to fly to Cardiff Wales Airport?

The travel and health documents you'll need for your trip to Cardiff Wales Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Cardiff Wales Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Why use momondo?

Why should I use momondo to find a flight deal to Cardiff?

It is quick and easy to find flights to Cardiff on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Cardiff that suits you.

Can I find flights to Cardiff with flexible booking policies on momondo?

All flight searches to Cardiff on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights to Cardiff?

momondo provides multiple filters to help you find the best flight to Cardiff. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight to Cardiff right now. Can momondo alert me if prices change?

Yes. momondo can track flight prices for Cardiff and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.