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Cheap flights from the United States to Cardiff from £352

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 15/5. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — CWL
23 Apr — 30 Apr1
1 adult

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 18 April 2025.

Round-trip from

£552

One-way from

£352

Popular in

August

Cheapest in

October

Average price

£686
17/5-24/5
  • 17/5-24/5
  • 4 total stops
  • 48h 25m total
  • USA to Cardiff
Search Deals
Delta
  • Delta
  • 15/5
  • 1 total stop
  • 9h 40m total
  • USA to Cardiff
Search Deals
Highest demand for flights based on searches. 17% potential increase in price (£128 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease (£36 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 2025
Search Deals

Find flight deals from USA to Cardiff

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 18 April 2025.

Sat 17/516:35BOS - CWL
2 stops13h 00mMultiple Airlines
Sat 24/509:00CWL - BOS
2 stops35h 25mMultiple Airlines
Deal found 17/4£552
Sat 24/510:30JFK - CWL
2 stops19h 05mMultiple Airlines
Sat 31/509:00CWL - JFK
2 stops32h 50mMultiple Airlines
Deal found 17/4£569
Tue 17/619:00JFK - CWL
2 stops35h 30mAer Lingus
Sat 21/612:00CWL - JFK
2 stops34h 15mAer Lingus
Deal found 17/4£604
Mon 2/616:20ORD - CWL
2 stops17h 35mMultiple Airlines
Mon 9/613:10CWL - ORD
2 stops31h 00mMultiple Airlines
Deal found 18/4£609
Fri 18/420:15BOS - CWL
1 stop15h 50mKLM
Thu 1/517:15CWL - BOS
1 stop30h 05mKLM
Deal found 17/4£613
Tue 6/517:25IAD - CWL
1 stop10h 50mKLM
Fri 16/517:15CWL - IAD
1 stop27h 20mKLM
Deal found 17/4£613
Sat 19/418:40BOS - CWL
1 stop17h 05mDelta
Fri 2/509:50CWL - BOS
1 stop11h 35mDelta
Deal found 18/4£614
Wed 20/809:30IAD - CWL
2 stops18h 45mDelta
Wed 27/809:50CWL - IAD
1 stop10h 45mDelta
Deal found 17/4£617
Wed 23/416:50ORD - CWL
1 stop10h 25mVirgin Atlantic
Wed 30/409:50CWL - ORD
1 stop10h 50mVirgin Atlantic
Deal found 17/4£620
Wed 23/412:15ORD - CWL
2 stops15h 00mKLM
Wed 30/409:50CWL - ORD
1 stop10h 50mKLM
Deal found 17/4£621
Wed 20/813:00BWI - CWL
2 stops15h 15mMultiple Airlines
Wed 27/809:50CWL - BWI
2 stops16h 03mMultiple Airlines
Deal found 17/4£624
Wed 1/1018:25JFK - CWL
1 stop17h 20mKLM
Wed 8/1017:15CWL - JFK
1 stop27h 10mKLM
Deal found 16/4£688

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 18 April 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

BostonCardiff

BOS - CWL

BOSCWL

Boston Logan Intl

Sat 17/5

16:35-10:35

2 stops13h 00m

Cardiff Wales

Sat 24/5

09:00-15:25

2 stops35h 25m

£552

New YorkCardiff

JFK - CWL

JFKCWL

New York John F Kennedy Intl

Sat 24/5

10:30-10:35

2 stops19h 05m

Cardiff Wales

Sat 31/5

09:00-12:50

2 stops32h 50m

£569

New YorkCardiff

JFK - CWL

JFKCWL

New York John F Kennedy Intl

Tue 17/6

19:00-11:30

2 stops35h 30m

Cardiff Wales

Sat 21/6

12:00-17:15

2 stops34h 15m

£604

BostonCardiff

BOS - CWL

BOSCWL

Boston Logan Intl

Tue 13/5

20:15-16:45

1 stop15h 30m

Cardiff Wales

Mon 19/5

09:50-16:25

1 stop11h 35m

£613

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Tue 6/5

17:25-09:15

1 stop10h 50m

Cardiff Wales

Fri 16/5

17:15-15:35

1 stop27h 20m

£613

Washington, D.C.Cardiff

IAD - CWL

IADCWL

Washington, D.C. Dulles Intl

Wed 20/8

09:30-09:15

2 stops18h 45m

Cardiff Wales

Wed 27/8

09:50-15:35

1 stop10h 45m

£617

BaltimoreCardiff

BWI - CWL

BWICWL

Baltimore/Washington

Wed 20/8

13:00-09:15

2 stops15h 15m

Cardiff Wales

Wed 27/8

09:50-20:53

2 stops16h 03m

£624

BostonCardiff

BOS - CWL

BOSCWL

Boston Logan Intl

Sat 17/5

18:35-09:15

1 stop9h 40m

Cardiff Wales

Sat 24/5

17:35-16:25

1 stop27h 50m

£666

New YorkCardiff

JFK - CWL

JFKCWL

New York John F Kennedy Intl

Wed 1/10

18:25-16:45

1 stop17h 20m

Cardiff Wales

Wed 8/10

17:15-15:25

1 stop27h 10m

£688

New YorkCardiff

JFK - CWL

JFKCWL

New York John F Kennedy Intl

Wed 1/10

10:30-09:15

2 stops17h 45m

Cardiff Wales

Wed 8/10

09:50-22:50

1 stop18h 00m

£691

Flights are sorted by cheapest return flights first.

Deals found on 17/4

Showing 1-10 of 43 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, July is the cheapest month in which you can book a flight from USA to Cardiff (average of £169). Flying from USA to Cardiff in December is currently the most expensive (average of £263). 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 18 April 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from USA to Cardiff as you normally would.

Rainfall in Cardiff by month

Plan your trip to Cardiff by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Cardiff ranges from 50.0 - 90.0 inches per month. January is typically the wettest month, when rainfall can reach 90.0 mm. April is typically the driest time to visit Cardiff when rainfall is around 50.0 mm.

Temperature in Cardiff by month

Plan your trip to Cardiff by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Cardiff, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 18.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 4.0 C).

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 18 April 2025.
Get a feel of what it's like to fly with Delta, KLM and Virgin Atlantic from USA to Cardiff by reading reviews from past customers. 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.
Delta
8.0
Very Good
7,917 reviews
Check prices

Comfort

7.9

Overall

8.0

Food

7.3

Crew

8.5

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very Good
7,917 reviews
Delta
8.0
Very Good
7,917 reviews
Check prices

Comfort

7.9

Overall

8.0

Food

7.3

Crew

8.5

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
KLM
7.8
Good
1,329 reviews
Delta
8.0
Very Good
7,917 reviews
Check prices

Comfort

7.9

Overall

8.0

Food

7.3

Crew

8.5

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Virgin Atlantic
7.4
Good
642 reviews
Delta
8.0
Very Good
7,917 reviews
Check prices

Comfort

7.9

Overall

8.0

Food

7.3

Crew

8.5

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Aer Lingus
7.0
Good
1,063 reviews
Delta
8.0
Very Good
7,917 reviews
Check prices

Comfort

7.9

Overall

8.0

Food

7.3

Crew

8.5

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
ITA Airways
6.7
Okay
964 reviews
Delta
8.0
Very Good
7,917 reviews
Check prices

Comfort

7.9

Overall

8.0

Food

7.3

Crew

8.5

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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.

  • 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 £352 on Delta. Other airlines that offer cheap prices include KLM from £411 and Virgin Atlantic from £1,639 one-way.

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

    Most travelers choose Chicago O'Hare 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, July is the cheapest month in which you can book a flight from USA to Cardiff (average of £169). Flying from USA to Cardiff in December is currently the most expensive (average of £263). 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 the United States?

Book flights to the United States if you plan to visit one of these locations
Barry
Bridgend

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Alternative routes for USA to Cardiff

See prices for flight routes from nearby airports that may be better suited for you.
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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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