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Cheap flights from the United States to Cardiff from $338

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from the United States to Cardiff departing on 6/20. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from the United States to Cardiff

Recent round-trip flight deals from the United States to Cardiff

Enter your travel dates to find the best prices.
Multiple Airlines Logo
10:35 am - 10:15 am
BOS
-
CWL
18h 40m
2 stops
Multiple Airlines Logo
11:30 pm - 10:38 pm
CWL
-
BOS
28h 08m
3 stops
$763Multiple Airlines
Wed, Jun 10 - Wed, Jun 17
Multiple Airlines Logo
11:55 pm - 10:25 pm
JFK
-
CWL
17h 30m
1 stop
Multiple Airlines Logo
7:30 am - 1:40 pm
CWL
-
JFK
11h 10m
1 stop
$783Multiple Airlines
Wed, Aug 19 - Sat, Aug 29
Multiple Airlines Logo
6:50 pm - 10:15 am
BOS
-
CWL
34h 25m
2 stops
Multiple Airlines Logo
11:30 pm - 10:38 pm
CWL
-
BOS
28h 08m
3 stops
$798Multiple Airlines
Sat, Jun 6 - Wed, Jun 17
Virgin Atlantic Logo
1:50 pm - 4:45 pm
LAX
-
CWL
18h 55m
1 stop
Virgin Atlantic Logo
5:15 pm - 11:50 am
CWL
-
LAX
26h 35m
1 stop
$1,023Virgin Atlantic
Tue, Aug 4 - Tue, Aug 25
Virgin Atlantic Logo
12:31 pm - 4:45 pm
LAX
-
CWL
20h 14m
2 stops
Virgin Atlantic Logo
9:45 am - 12:37 am
CWL
-
LAX
22h 52m
2 stops
$1,037Virgin Atlantic
Tue, Aug 4 - Tue, Aug 25
Delta Logo
2:20 pm - 9:15 am
CLT
-
CWL
13h 55m
2 stops
Delta Logo
9:45 am - 8:23 pm
CWL
-
CLT
15h 38m
2 stops
$1,049Delta
Wed, Sep 9 - Tue, Sep 22
Delta Logo
9:40 am - 9:15 am
CLT
-
CWL
18h 35m
2 stops
Delta Logo
9:45 am - 11:37 pm
CWL
-
CLT
18h 52m
2 stops
$1,098Delta
Fri, Aug 21 - Tue, Aug 25
WestJet Logo
11:55 am - 10:15 am
TPA
-
CWL
17h 20m
1 stop
WestJet Logo
11:35 am - 11:05 am
CWL
-
TPA
28h 30m
1 stop
$1,126WestJet
Fri, Jul 3 - Thu, Jul 23
WestJet Logo
7:35 pm - 10:15 am
SEA
-
CWL
30h 40m
2 stops
WestJet Logo
11:35 am - 9:40 am
CWL
-
SEA
54h 05m
2 stops
$1,287WestJet
Thu, Jun 18 - Thu, Jun 25
KLM Logo
5:40 pm - 9:15 am
SEA
-
CWL
31h 35m
1 stop
KLM Logo
5:15 pm - 11:33 am
CWL
-
SEA
26h 18m
1 stop
$1,525KLM
Sat, May 30 - Tue, Jun 30

Virgin Atlantic flights from United States to Cardiff

Our best Virgin Atlantic deals on United States to Cardiff flight tickets
Virgin Atlantic
Aug 4
LAX1:50 pmLos Angeles
18h 55m
1 stop
CWL4:45 pmCardiff Wales
Aug 25
CWL5:15 pmCardiff Wales
26h 35m
1 stop
LAX11:50 amLos Angeles
$1,023
Virgin Atlantic
Aug 4
LAX12:31 pmLos Angeles
20h 14m
2 stops
CWL4:45 pmCardiff Wales
Aug 25
CWL9:45 amCardiff Wales
22h 52m
2 stops
LAX12:37 amLos Angeles
$1,037
Virgin Atlantic
Aug 14
IAD5:40 pmWashington, D.C. Dulles Intl
10h 35m
1 stop
CWL9:15 amCardiff Wales
Aug 24
CWL9:45 amCardiff Wales
10h 50m
1 stop
IAD3:35 pmWashington, D.C. Dulles Intl
$1,198

Delta flights from United States to Cardiff

Our best Delta deals on United States to Cardiff flight tickets
Delta
Sep 21
ORD4:50 pmChicago O'Hare Intl
10h 25m
1 stop
CWL9:15 amCardiff Wales
Sep 30
CWL9:45 amCardiff Wales
10h 45m
1 stop
ORD2:30 pmChicago O'Hare Intl
$1,024
Delta
Sep 21
ORD10:35 amChicago O'Hare Intl
24h 10m
2 stops
CWL4:45 pmCardiff Wales
Sep 30
CWL9:45 amCardiff Wales
10h 45m
1 stop
ORD2:30 pmChicago O'Hare Intl
$1,028
Delta
Sep 16
ORD7:10 amChicago O'Hare Intl
20h 05m
2 stops
CWL9:15 amCardiff Wales
Sep 30
CWL9:45 amCardiff Wales
20h 12m
2 stops
ORD11:57 pmChicago O'Hare Intl
$1,038

momondo Fare Finder

 
Customize your flight search to find flights from United States 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, momondo users made 832,500 searches. Data last updated May 8, 2026.
Use the filters below to find and compare flights from the United States to Cardiff that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BostonCardiff

BOS - CWL

BOSCWL

Boston Logan Intl

Wed 6/10

10:35 am-10:15 am

2 stops18h 40m

Cardiff Wales

Wed 6/17

11:30 pm-10:38 pm

3 stops28h 08m

$763
Quickest round-trip

New YorkCardiff

JFK - CWL

JFKCWL

New York John F Kennedy Intl

Wed 8/19

11:55 pm-10:25 pm

1 stop17h 30m

Cardiff Wales

Sat 8/29

7:30 am-1:40 pm

1 stop11h 10m

$783

BostonCardiff

BOS - CWL

BOSCWL

Boston Logan Intl

Sat 6/6

6:50 pm-10:15 am

2 stops34h 25m

Cardiff Wales

Wed 6/17

11:30 pm-10:38 pm

3 stops28h 08m

$798

Los AngelesCardiff

LAX - CWL

LAXCWL

Los Angeles

Tue 8/4

1:50 pm-4:45 pm

1 stop18h 55m

Cardiff Wales

Tue 8/25

5:15 pm-11:50 am

1 stop26h 35m

$1,023

Los AngelesCardiff

LAX - CWL

LAXCWL

Los Angeles

Tue 8/4

12:31 pm-4:45 pm

2 stops20h 14m

Cardiff Wales

Tue 8/25

9:45 am-12:37 am

2 stops22h 52m

$1,037

CharlotteCardiff

CLT - CWL

CLTCWL

Charlotte Douglas

Wed 9/9

2:20 pm-9:15 am

2 stops13h 55m

Cardiff Wales

Tue 9/22

9:45 am-8:23 pm

2 stops15h 38m

$1,049

CharlotteCardiff

CLT - CWL

CLTCWL

Charlotte Douglas

Fri 8/21

9:40 am-9:15 am

2 stops18h 35m

Cardiff Wales

Tue 8/25

9:45 am-11:37 pm

2 stops18h 52m

$1,098

TampaCardiff

TPA - CWL

TPACWL

Tampa

Fri 7/3

11:55 am-10:15 am

1 stop17h 20m

Cardiff Wales

Thu 7/23

11:35 am-11:05 am

1 stop28h 30m

$1,126

SeattleCardiff

SEA - CWL

SEACWL

Seattle/Tacoma Intl

Thu 6/18

7:35 pm-10:15 am

2 stops30h 40m

Cardiff Wales

Thu 6/25

11:35 am-9:40 am

2 stops54h 05m

$1,287

SeattleCardiff

SEA - CWL

SEACWL

Seattle/Tacoma Intl

Sat 5/30

5:40 pm-9:15 am

1 stop31h 35m

Cardiff Wales

Tue 6/30

5:15 pm-11:33 am

1 stop26h 18m

$1,525

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Cardiff from

How to get the cheapest flight ticket from United States to Cardiff

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Cardiff?

The month of August is, on average, the cheapest month to fly to Cardiff from United States, with most prices found around $566. If you aren’t able to travel to Cardiff during the month of August, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $644.

Can stopping save me money on United States to Cardiff flights?

You could potentially save up to 33% on your flight if you consider stops on a United States to Cardiff flight.

Cheap United States to Cardiff flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from United States to Cardiff

Fastest flight time

9h 00m

Direct flights

None
The fastest flight from United States to Cardiff takes 9h 00m
There are no direct flights from United States to Cardiff. There are no popular flight routes from United States to Cardiff.
Search flight deals

Frequently asked questions about flying from the United States to Cardiff

  • When did momondo last update prices for flights from United States to Cardiff Wales Airport?

    Prices for flights from United States to Cardiff Wales Airport are updated daily.

  • How many operators does momondo search for flights from United States to Cardiff Wales Airport?

  • How old do you have to be to fly from United States 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 from United States to Cardiff Wales Airport.

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

    The travel and health documents required for your trip to Cardiff Wales Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Cardiff Wales Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from United States to Cardiff

Compare and see reviews for airlines that fly from United States to Cardiff with momondo
Airline
Rating
Free Cancellation
Price
KLMPriceFrom $644Free CancellationRating
7.8
1,511 reviews
Search KLM flights
DeltaPriceFrom $808Free CancellationRating
7.9
8,456 reviews
Search Delta flights

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from United States to Cardiff for you.

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

momondo does allow users to show only those flights to Cardiff from United States which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from United States to Cardiff?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Cardiff from United States.

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

If you are not ready to book a flight from United States to Cardiff now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Cardiff and let you know when they change.

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Airlines are sorted and displayed according to clicks in the past 7 days on momondo
Aer Lingus
KLM
Delta