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$558+ Cheap flights from Cardiff (CWL) to Boston (BOS)

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 5/23. Fares are subject to change and may not be available on all flights or dates of travel.
CWL — BOS
Jun 1 — Jun 81
Mon 6/1
Mon 6/8
1 adult, Economy
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Cheap flight deals from Cardiff to Boston

Cheapest flights from Cardiff to Boston
Explore the most affordable flight options available from Cardiff to Boston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 2, 2026.

This Mytrip deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/1110:50 pm
CWL
-
BOS
3 stops27h 05m
Multiple Airlines
Thu 6/187:00 pm
BOS
-
CWL
2 stops34h 15m
Multiple Airlines
Deal found 4/29$990
This WestJet deal was found by Cheapflights users on 5/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure WestJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/1511:35 am
CWL
-
BOS
2 stops59h 05m
WestJet
Mon 6/226:30 pm
BOS
-
CWL
2 stops58h 45m
WestJet
Deal found 5/1$1,331
This WestJet deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure WestJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/2811:35 am
CWL
-
BOS
2 stops35h 05m
WestJet
Mon 6/16:30 pm
BOS
-
CWL
2 stops58h 45m
WestJet
Deal found 4/29$1,489

Find flight deals from Cardiff to Boston

Discover tips and strategies to find the most affordable flight options for your journey from Cardiff (CWL) to Boston (BOS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated May 2, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$990
(Mytrip)

One-way from

$558
(Kiwi.com)
Provider with most accurate pricing for Cardiff Wales-Boston Logan Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Cardiff Wales-Boston Logan Intl flights.
Search Deals
From Cardiff Wales to Boston Logan Intl
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One-way flight from Cardiff Wales to Boston Logan Intl
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Cardiff to Boston 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 2,558,603 searches. Data last updated May 2, 2026.
Use the filters below to find and compare flights from Cardiff to Boston that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Thu 6/11

10:50 pm-8:55 pm

3 stops27h 05m

Boston Logan Intl

Thu 6/18

5:45 am-10:20 pm

3 stops35h 35m

$1,015

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Mon 6/15

11:35 am-5:40 pm

2 stops59h 05m

Boston Logan Intl

Mon 6/22

6:30 pm-10:15 am

2 stops58h 45m

$1,331

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Thu 5/28

11:35 am-5:40 pm

2 stops35h 05m

Boston Logan Intl

Mon 6/1

6:30 pm-10:15 am

2 stops58h 45m

$1,489
Cheapest one-way

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Sat 5/23

7:30 am-2:40 pm

3 stops36h 10m

$558

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Sat 8/15

7:30 am-9:05 am

2 stops30h 35m

$627
Quickest one-way

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Mon 6/15

5:15 pm-4:35 pm

1 stop28h 20m

$1,885

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

Sorted by cheapest first
  • Most accurate provider: When it comes to deals on Cardiff-Boston flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Cardiff-Boston flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Cardiff-Boston flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Cardiff-Boston flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Cardiff-Boston flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Cardiff to Boston

Have a flexible travel schedule? Discover the best time to fly to Boston from Cardiff with our price prediction graph.
Estimated round-trip 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.

Related info for your journey

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

  • How long is the flight from Cardiff to Boston?

    There are many flights that can get you from Cardiff to Boston in 59h 05m. Fly via WestJet to get the fastest option. The distance between Cardiff and Boston is about 3137 mi.

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

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

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

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

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

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

See more FAQs

Traveling to a place near Boston?

Book flights to Boston if you plan to visit one of these locations
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Hampton Beach
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Cranston
Chelsea
Warwick
Peabody
Seabrook
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Londonderry
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Quincy
Waltham
Lowell
Braintree

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