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Cheap flights from the United States to Cardiff from £249

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 29/1. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — CWL
27 Dec — 3 Jan1
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 27 November 2025.

Wed 31/1219:10BOS - CWL
1 stop9h 40mDelta
Thu 8/110:20CWL - BOS
2 stops34h 33mDelta
Deal found 26/11£495
Tue 30/1220:00BOS - CWL
2 stops32h 50mDelta
Thu 8/110:20CWL - BOS
2 stops37h 10mDelta
Deal found 26/11£504
Wed 31/1219:10BOS - CWL
1 stop9h 40mMultiple Airlines
Tue 6/110:20CWL - BOS
1 stop32h 10mMultiple Airlines
Deal found 26/11£507
Tue 30/1217:20BOS - CWL
1 stop8h 40mMultiple Airlines
Thu 8/110:30CWL - BOS
2 stops17h 26mMultiple Airlines
Deal found 26/11£511
Mon 29/1220:50BOS - CWL
1 stop32h 00mDelta
Thu 8/110:20CWL - BOS
2 stops41h 01mDelta
Deal found 26/11£583
Wed 31/1220:50BOS - CWL
1 stop15h 05mDelta
Wed 7/110:20CWL - BOS
1 stop13h 35mDelta
Deal found 26/11£608
Tue 30/1220:00BOS - CWL
2 stops32h 50mDelta
Wed 7/110:20CWL - BOS
1 stop13h 35mDelta
Deal found 26/11£620
Sun 14/1219:25JFK - CWL
2 stops22h 40mMultiple Airlines
Sun 28/1221:20CWL - JFK
3 stops20h 05mMultiple Airlines
Deal found 26/11£685
Mon 29/1220:50BOS - CWL
1 stop32h 00mDelta
Wed 7/110:20CWL - BOS
1 stop13h 35mDelta
Deal found 26/11£695
Tue 30/1219:10BOS - CWL
1 stop9h 40mKLM
Tue 6/117:25CWL - BOS
1 stop30h 30mKLM
Deal found 26/11£698
Tue 16/1218:05JFK - CWL
2 stops19h 40mMultiple Airlines
Sun 28/1221:20CWL - JFK
3 stops20h 05mMultiple Airlines
Deal found 26/11£779
Mon 15/1218:05JFK - CWL
2 stops40h 25mMultiple Airlines
Wed 31/1207:55CWL - JFK
1 stop13h 55mMultiple Airlines
Deal found 26/11£876

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 27 November 2025.

Round-trip from

£314

One-way from

£249

Popular in

January

Cheapest in

December

Average price

£760
8/1-12/1
  • 8/1-12/1
  • 2 total stops
  • 38h 25m total
  • USA to Cardiff
Search Deals
29/1
  • 29/1
  • 2 total stops
  • 39h 45m total
  • USA to Cardiff
Search Deals
Highest demand for flights based on searches. 4% potential increase in price (£31 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 8% potential price decrease (£47 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 27 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

LGA - CWL

LGACWL

New York LaGuardia

Fri 9/1

15:30-19:40

2 stops23h 10m

Cardiff Wales

Fri 16/1

22:25-19:03

2 stops25h 38m

£395

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Fri 9/1

19:40-19:40

2 stops19h 00m

Cardiff Wales

Fri 16/1

22:25-18:30

2 stops25h 05m

£430

New YorkCardiff

JFK - CWL

JFKCWL

New York John F Kennedy Intl

Fri 9/1

21:00-19:40

1 stop17h 40m

Cardiff Wales

Fri 16/1

17:15-13:55

2 stops25h 40m

£433

BostonCardiff

BOS - CWL

BOSCWL

Boston Logan Intl

Wed 31/12

19:10-09:50

1 stop9h 40m

Cardiff Wales

Thu 8/1

10:20-15:53

2 stops34h 33m

£495

BostonCardiff

BOS - CWL

BOSCWL

Boston Logan Intl

Tue 30/12

20:00-09:50

2 stops32h 50m

Cardiff Wales

Thu 8/1

10:20-18:30

2 stops37h 10m

£504

New YorkCardiff

JFK - CWL

JFKCWL

New York John F Kennedy Intl

Wed 8/4

19:35-16:45

1 stop16h 10m

Cardiff Wales

Thu 16/4

09:45-17:05

1 stop12h 20m

£505

New YorkCardiff

JFK - CWL

JFKCWL

New York John F Kennedy Intl

Wed 8/4

11:13-09:15

2 stops17h 02m

Cardiff Wales

Thu 16/4

09:45-21:42

2 stops16h 57m

£516

BostonCardiff

BOS - CWL

BOSCWL

Boston Logan Intl

Wed 4/2

20:50-09:50

1 stop32h 00m

Cardiff Wales

Sun 8/2

10:15-18:55

1 stop13h 40m

£532

New YorkCardiff

JFK - CWL

JFKCWL

New York John F Kennedy Intl

Fri 16/1

17:45-09:50

1 stop11h 05m

Cardiff Wales

Tue 20/1

10:20-11:40

1 stop30h 20m

£532

MinneapolisCardiff

MSP - CWL

MSPCWL

Minneapolis St Paul

Sat 10/1

12:00-20:55

3 stops26h 55m

Cardiff Wales

Sat 17/1

20:05-21:19

2 stops31h 14m

£533

Flights are sorted by cheapest return flights first.

Deals found on 25/11

Showing 1-10 of 47 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 £408). Flying from USA to Cardiff in June is currently the most expensive (average of £803). 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 27 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 24% 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 27 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
1,423 reviews
Check prices

Boarding

7.8

Entertainment

7.1

Food

7.2

Crew

8.4

Overall

7.7

Comfort

7.6

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
1,423 reviews
KLM
7.7
Good
1,423 reviews
Check prices

Boarding

7.8

Entertainment

7.1

Food

7.2

Crew

8.4

Overall

7.7

Comfort

7.6

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 40m. Fly via Delta, KLM, 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 cheapest airlines to fly from USA to Cardiff one-way?

    One-way options have recently been found by users for as low as £336 on Virgin Atlantic. Other airlines that offer cheap prices include Delta from £351 and Aer Lingus from £399 one-way.

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

    Most travelers choose Boston Logan Intl - Cardiff Wales, New York John F Kennedy 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 £408). Flying from USA to Cardiff in June is currently the most expensive (average of £803). 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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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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