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Cheap flights from the United States to Cardiff from £252

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 23/1. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — CWL
6 Dec — 13 Dec1
1 adult
1 adult, Economy, 0 bags

Find flight deals from USA to Cardiff

Enter your travel dates to find the best prices.

Cheapest flights from USA to Cardiff
Explore the most affordable flight options available from USA to Cardiff. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 6 November 2025.

Tue 2/1218:05JFK - CWL
2 stops16h 25mMultiple Airlines
Fri 12/1216:05CWL - JFK
2 stops30h 45mMultiple Airlines
Deal found 5/11£440
Tue 2/1219:05BOS - CWL
1 stop9h 45mKLM
Tue 9/1217:25CWL - BOS
1 stop30h 30mKLM
Deal found 3/11£518
Tue 2/1217:45JFK - CWL
1 stop11h 05mKLM
Fri 12/1210:20CWL - JFK
1 stop10h 25mKLM
Deal found 5/11£518
Tue 2/1219:05BOS - CWL
1 stop9h 45mDelta
Tue 9/1210:20CWL - BOS
2 stops20h 07mDelta
Deal found 3/11£526
Sun 30/1119:10BOS - CWL
1 stop16h 35mKLM
Sun 7/1210:20CWL - BOS
1 stop13h 35mKLM
Deal found 3/11£556
Thu 6/1118:05IAD - CWL
1 stop10h 45mMultiple Airlines
Wed 19/1110:20CWL - IAD
2 stops13h 48mMultiple Airlines
Deal found 4/11£587
Thu 6/1118:05IAD - CWL
1 stop10h 45mKLM
Wed 19/1117:25CWL - IAD
1 stop27h 40mKLM
Deal found 4/11£595
Tue 2/1213:00BOS - CWL
2 stops21h 30mMultiple Airlines
Tue 9/1213:00CWL - BOS
3 stops31h 57mMultiple Airlines
Deal found 3/11£607
Sun 30/1119:10BOS - CWL
1 stop16h 35mMultiple Airlines
Sun 7/1210:20CWL - BOS
2 stops13h 39mMultiple Airlines
Deal found 3/11£612
Fri 5/1212:37PHL - CWL
2 stops16h 13mMultiple Airlines
Fri 12/1210:20CWL - PHL
2 stops19h 31mMultiple Airlines
Deal found 5/11£616
Mon 17/1121:20JFK - CWL
1 stop14h 35mVirgin Atlantic
Wed 19/1110:20CWL - JFK
2 stops19h 48mVirgin Atlantic
Deal found 4/11£622
Thu 27/1116:45JFK - CWL
1 stop12h 05mKLM
Mon 1/1210:20CWL - JFK
1 stop30h 10mKLM
Deal found 4/11£625

Cheap flight deals from USA to Cardiff

Keep the following information in mind while searching for USA to Cardiff flight deals. Data was last updated 6 November 2025.

Round-trip from

£440

One-way from

£252

Popular in

January

Cheapest in

December

Average price

£769
2/12-12/12
  • 2/12-12/12
  • 4 total stops
  • 47h 10m total
  • USA to Cardiff
Search Deals
23/1
  • 23/1
  • 1 total stop
  • 20h 55m total
  • USA to Cardiff
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (£32 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 8% potential price decrease (£48 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from USA 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, Cheapflights users made 858,174 searches. Data last updated 6 November 2025.
Use the filters below to find and compare flights from the United States to Cardiff that are best for you.

Fly from

USA

Fly to

Cardiff

Route

Depart

Return

Price

New YorkCardiff

JFK - CWL

JFKCWL

New York John F Kennedy Intl

Tue 2/12

18:05-15:30

2 stops16h 25m

Cardiff Wales

Fri 12/12

16:05-17:50

2 stops30h 45m

£440

New YorkCardiff

JFK - CWL

JFKCWL

New York John F Kennedy Intl

Fri 6/2

17:00-19:35

2 stops21h 35m

Cardiff Wales

Mon 16/2

16:40-19:15

2 stops31h 35m

£479

BostonCardiff

BOS - CWL

BOSCWL

Boston Logan Intl

Tue 2/12

19:05-09:50

1 stop9h 45m

Cardiff Wales

Tue 9/12

17:25-18:55

1 stop30h 30m

£518

New YorkCardiff

JFK - CWL

JFKCWL

New York John F Kennedy Intl

Tue 2/12

17:45-09:50

1 stop11h 05m

Cardiff Wales

Fri 12/12

10:20-15:45

1 stop10h 25m

£518

BostonCardiff

BOS - CWL

BOSCWL

Boston Logan Intl

Wed 25/2

19:10-09:50

1 stop9h 40m

Cardiff Wales

Mon 2/3

17:15-13:20

1 stop25h 05m

£524

BostonCardiff

BOS - CWL

BOSCWL

Boston Logan Intl

Tue 2/12

19:05-09:50

1 stop9h 45m

Cardiff Wales

Tue 9/12

10:20-01:27

2 stops20h 07m

£526

BostonCardiff

BOS - CWL

BOSCWL

Boston Logan Intl

Wed 25/2

12:50-09:50

2 stops16h 00m

Cardiff Wales

Mon 2/3

17:15-13:20

1 stop25h 05m

£528

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Fri 27/2

19:40-19:40

2 stops19h 00m

Cardiff Wales

Fri 6/3

22:25-18:30

2 stops25h 05m

£534

BostonCardiff

BOS - CWL

BOSCWL

Boston Logan Intl

Sun 30/11

19:10-16:45

1 stop16h 35m

Cardiff Wales

Sun 7/12

10:20-18:55

1 stop13h 35m

£556

BostonCardiff

BOS - CWL

BOSCWL

Boston Logan Intl

Fri 20/2

19:10-16:55

1 stop16h 45m

Cardiff Wales

Mon 23/2

10:20-13:25

1 stop32h 05m

£562

Flights are sorted by cheapest return flights first.

Deals found on 3/11

Showing 1-10 of 38 results
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Best time to book a flight from USA to Cardiff

Have a flexible travel schedule? Discover the best time to fly to Cardiff from USA with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from the United States to Cardiff

What is the cheapest month to book a flight from USA to Cardiff?

Currently, August is the cheapest month in which you can book a flight from USA to Cardiff (average of £413). Flying from USA to Cardiff in June is currently the most expensive (average of £813). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from US to CWL?

Find hourly flight availability from USA to Cardiff. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 6 November 2025.

When flying from USA to Cardiff, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 25% versus a flight at midday.

Reviews of airlines servicing Cardiff

Get insights into the airlines that provide service to Cardiff. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Cardiff. Reviews last updated 6 November 2025.
Read reviews from past customers who have flown with KLM from the United States to Cardiff. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.7
Good
1,405 reviews
Check prices

Entertainment

7.1

Boarding

7.8

Overall

7.7

Crew

8.4

Food

7.3

Comfort

7.7

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
KLM
7.7
Good
1,405 reviews
KLM
7.7
Good
1,405 reviews
Check prices

Entertainment

7.1

Boarding

7.8

Overall

7.7

Crew

8.4

Food

7.3

Comfort

7.7

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.

Related info for your journey

Find useful and relevant information for your journey from USA to Cardiff. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Cardiff from United States?

    If you book a flight to Cardiff from United States, you will be flying to Cardiff Wales, which is the city’s only airport. Cardiff Wales (CWL) is located 9.1 mi from the center of Cardiff.

  • How long is the flight from USA to Cardiff?

    There are many flights that can get you from USA to Cardiff in 9h 45m. Fly via KLM, Delta, or Virgin Atlantic to get the fastest option. Airlines will cover a distance of 3137 mi. This flight may include one or multiple stops.

  • What are the most popular routes from USA to Cardiff?

    Most travelers choose New York John F Kennedy Intl - Cardiff Wales, Boston Logan Intl - Cardiff Wales or Newark - Cardiff Wales when deciding on the best route from USA to Cardiff.

  • Can I find deals for flights from USA to Cardiff that include hotel bookings?

    Yes. In addition to deals on USA to Cardiff flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from USA to Cardiff?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from USA to Cardiff.

  • Can I find deals for business class flights from USA to Cardiff?

    Yes. Cheapflights offers flight deals from USA to Cardiff by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from USA to Cardiff?

    Currently, August is the cheapest month in which you can book a flight from USA to Cardiff (average of £413). Flying from USA to Cardiff in June is currently the most expensive (average of £813). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near Cardiff?

Book flights to Cardiff if you plan to visit one of these locations
Barry
Bridgend

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How does Cheapflights help users find flights from USA to Cardiff?

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Can Cheapflights find flights from USA to Cardiff with no change fees?

Yes, we can. To see specific flights from USA to Cardiff with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from USA to Cardiff become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Cardiff from USA today and book when prices fit your budget.

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