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$831+ 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 6/1. Fares are subject to change and may not be available on all flights or dates of travel.
CWL — BOS
Jun 7 — Jun 141
Sun 6/7
Sun 6/14
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 8, 2026.

This Mytrip deal was found by Cheapflights users on 5/8. 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 6/110:10 pm
CWL
-
BOS
3 stops29h 29m
Multiple Airlines
Sun 6/76:50 pm
BOS
-
CWL
2 stops34h 25m
Multiple Airlines
Deal found 5/8$831
This TravelUp deal was found by Cheapflights users on 5/7. 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/15:15 pm
CWL
-
BOS
1 stop25h 04m
KLM
Thu 9/107:00 pm
BOS
-
CWL
1 stop9h 15m
KLM
Deal found 5/7$841
This Kiwi.com deal was found by Cheapflights users on 5/7. 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 9/57:30 am
CWL
-
BOS
2 stops14h 05m
Multiple Airlines
Sat 9/1911:35 pm
BOS
-
CWL
1 stop16h 45m
Multiple Airlines
Deal found 5/7$842
This KLM deal was found by Cheapflights users on 5/7. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/319:45 am
CWL
-
BOS
1 stop32h 34m
KLM
Wed 9/97:00 pm
BOS
-
CWL
1 stop16h 45m
KLM
Deal found 5/7$872
This TravelUp deal was found by Cheapflights users on 5/7. 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/85:15 pm
CWL
-
BOS
2 stops34h 21m
Virgin Atlantic
Thu 9/176:00 am
BOS
-
CWL
2 stops22h 15m
Virgin Atlantic
Deal found 5/7$879
This Air France deal was found by Cheapflights users on 5/7. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/99:45 am
CWL
-
BOS
1 stop13h 45m
Air France
Wed 9/168:25 pm
BOS
-
CWL
1 stop15h 20m
Air France
Deal found 5/7$900

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 8, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$831
(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
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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 8, 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

Mon 6/1

11:35 am-9:05 am

1 stop26h 30m

Boston Logan Intl

Sun 6/7

10:05 am-10:15 am

1 stop19h 10m

$886

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Wed 9/2

9:45 am-6:30 pm

1 stop13h 45m

Boston Logan Intl

Thu 9/17

7:00 pm-9:15 am

1 stop9h 15m

$913

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Sat 6/20

11:35 am-10:38 pm

1 stop16h 03m

Boston Logan Intl

Sun 6/28

5:45 am-10:15 am

2 stops23h 30m

$915

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Tue 6/2

11:35 am-10:31 am

1 stop27h 56m

Boston Logan Intl

Tue 6/9

8:25 pm-10:15 am

1 stop32h 50m

$939
Quickest round-trip

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Mon 9/7

9:45 am-4:35 pm

1 stop11h 50m

Boston Logan Intl

Sun 9/13

7:00 pm-9:15 am

1 stop9h 15m

$954

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Thu 9/3

9:45 am-4:35 pm

1 stop11h 50m

Boston Logan Intl

Tue 9/15

7:00 pm-9:15 am

1 stop9h 15m

$954

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Mon 9/7

9:45 am-4:35 pm

1 stop11h 50m

Boston Logan Intl

Sat 9/19

7:00 pm-9:15 am

1 stop9h 15m

$954

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Sun 9/6

9:50 am-1:19 pm

1 stop32h 29m

Boston Logan Intl

Sun 9/13

7:00 pm-9:15 am

1 stop9h 15m

$954

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Fri 6/5

10:45 pm-5:59 pm

2 stops24h 14m

Boston Logan Intl

Fri 6/12

6:35 pm-10:15 am

1 stop10h 40m

$975
Cheapest one-way
Quickest one-way

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Thu 6/18

12:00 pm-8:05 pm

2 stops13h 05m

$1,202

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/6

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 11h 50m. Fly via Delta 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
Medford
Cambridge
Concord
Hampton Beach
Watertown
Brockton
Seekonk
Cranston
Chelsea
Warwick
Peabody
Seabrook
York Beach
Londonderry
Swansea
Old Orchard Beach
Quincy
Waltham
Lowell
Braintree

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