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$784+ Cheap flights from Cardiff (CWL) to Boston (BOS)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/2. Fares are subject to change and may not be available on all flights or dates of travel.
CWL — BOS
May 18 — May 251
Mon 5/18
Mon 5/25
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 April 18, 2026.

This Mytrip deal was found by Cheapflights users on 4/18. 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.
Tue 6/211:15 pm
CWL
-
BOS
2 stops23h 20m
Multiple Airlines
Tue 6/96:50 pm
BOS
-
CWL
2 stops34h 25m
Multiple Airlines
Deal found 4/18$784
This Mytrip deal was found by Cheapflights users on 4/16. 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.
Mon 5/1810:10 pm
CWL
-
BOS
2 stops24h 25m
Multiple Airlines
Thu 5/2110:05 am
BOS
-
CWL
2 stops31h 15m
Multiple Airlines
Deal found 4/16$851
This Kiwi.com deal was found by Cheapflights users on 4/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/3011:35 am
CWL
-
BOS
1 stop26h 30m
Multiple Airlines
Sat 6/64:45 pm
BOS
-
CWL
2 stops36h 30m
Multiple Airlines
Deal found 4/15$855
This Kiwi.com deal was found by Cheapflights users on 4/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/264:15 pm
CWL
-
BOS
2 stops33h 50m
Multiple Airlines
Tue 6/211:35 pm
BOS
-
CWL
1 stop18h 30m
Multiple Airlines
Deal found 4/15$895

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 April 18, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$784
(Mytrip)
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
Search Deals

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 April 18, 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

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Tue 6/2

11:15 pm-5:35 pm

2 stops23h 20m

Boston Logan Intl

Tue 6/9

6:50 pm-10:15 am

2 stops34h 25m

$784

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Mon 5/18

10:10 pm-5:35 pm

2 stops24h 25m

Boston Logan Intl

Thu 5/21

10:05 am-10:20 pm

2 stops31h 15m

$851

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Sat 5/30

11:35 am-9:45 am

3 stops27h 10m

Boston Logan Intl

Sat 6/6

6:50 pm-10:15 am

2 stops34h 25m

$939

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Thu 6/4

11:35 am-5:40 pm

2 stops35h 05m

Boston Logan Intl

Mon 6/8

6:30 pm-10:15 am

2 stops58h 45m

$1,281
Quickest round-trip

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Tue 6/30

9:45 am-7:35 pm

2 stops14h 50m

Boston Logan Intl

Sat 7/11

8:25 pm-9:15 am

1 stop31h 50m

$5,223
Cheapest one-way

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Sat 5/30

11:35 am-5:40 pm

2 stops35h 05m

$975
Quickest one-way

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Sat 5/30

9:45 am-4:25 pm

1 stop11h 40m

$1,950

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/15

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.

  • 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.

Traveling to a place near Boston?

Book flights to Boston if you plan to visit one of these locations
Medford
Cambridge
Concord
Hampton Beach
Watertown
Brockton
Seekonk
Cranston
Chelsea
Seabrook
Warwick
Peabody
York Beach
Londonderry
Swansea
Old Orchard Beach
Lincoln
Quincy
Waltham
Lowell

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