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Cheap flights from Cardiff to Boston from £250

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Cardiff to Boston departing on 29/6. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Find the cheapest flights from Cardiff to Boston

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
11:35 - 19:15
CWL
-
BOS
12h 40m
1 stop
Multiple Airlines Logo
10:05 - 10:15
BOS
-
CWL
19h 10m
1 stop
£486Multiple Airlines
Mon, 20 Jul - Mon, 3 Aug
Multiple Airlines Logo
11:35 - 16:44
CWL
-
BOS
34h 09m
1 stop
Multiple Airlines Logo
20:25 - 10:15
BOS
-
CWL
32h 50m
1 stop
£506Multiple Airlines
Thu, 2 Jul - Thu, 9 Jul
Multiple Airlines Logo
11:35 - 09:05
CWL
-
BOS
26h 30m
1 stop
Multiple Airlines Logo
10:05 - 10:15
BOS
-
CWL
19h 10m
1 stop
£526Multiple Airlines
Mon, 6 Jul - Mon, 13 Jul
Multiple Airlines Logo
11:35 - 10:29
CWL
-
BOS
27h 54m
1 stop
Multiple Airlines Logo
16:45 - 10:15
BOS
-
CWL
36h 30m
2 stops
£529Multiple Airlines
Thu, 2 Jul - Thu, 9 Jul
Multiple Airlines Logo
22:50 - 19:15
CWL
-
BOS
25h 25m
2 stops
Multiple Airlines Logo
10:50 - 22:20
BOS
-
CWL
30h 30m
2 stops
£538Multiple Airlines
Thu, 2 Jul - Thu, 9 Jul
Multiple Airlines Logo
22:50 - 20:55
CWL
-
BOS
27h 05m
3 stops
Multiple Airlines Logo
10:50 - 22:20
BOS
-
CWL
30h 30m
2 stops
£546Multiple Airlines
Thu, 2 Jul - Thu, 9 Jul
Multiple Airlines Logo
11:35 - 21:27
CWL
-
BOS
14h 52m
2 stops
Multiple Airlines Logo
10:05 - 10:15
BOS
-
CWL
19h 10m
1 stop
£555Multiple Airlines
Mon, 20 Jul - Mon, 3 Aug
Multiple Airlines Logo
11:35 - 21:27
CWL
-
BOS
14h 52m
2 stops
Multiple Airlines Logo
10:05 - 10:15
BOS
-
CWL
19h 10m
1 stop
£555Multiple Airlines
Mon, 6 Jul - Mon, 13 Jul
Multiple Airlines Logo
11:35 - 19:15
CWL
-
BOS
12h 40m
1 stop
Multiple Airlines Logo
20:10 - 10:15
BOS
-
CWL
33h 05m
1 stop
£557Multiple Airlines
Tue, 7 Jul - Tue, 14 Jul
Multiple Airlines Logo
22:50 - 20:55
CWL
-
BOS
27h 05m
3 stops
Multiple Airlines Logo
05:45 - 22:20
BOS
-
CWL
35h 35m
3 stops
£558Multiple Airlines
Thu, 2 Jul - Thu, 9 Jul

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KLM flights from Cardiff to Boston

Our best KLM deals on Cardiff to Boston flight tickets
KLM
2 Jul
CWL09:45Cardiff Wales
11h 55m
1 stop
BOS16:40Boston Logan Intl
9 Jul
BOS16:40Boston Logan Intl
11h 35m
1 stop
CWL09:15Cardiff Wales
£644
KLM
21 Jul
CWL17:15Cardiff Wales
25h 03m
1 stop
BOS13:18Boston Logan Intl
26 Aug
BOS16:45Boston Logan Intl
11h 30m
1 stop
CWL09:15Cardiff Wales
£760

WestJet flights from Cardiff to Boston

Our best WestJet deals on Cardiff to Boston flight tickets
WestJet
27 Aug
CWL11:35Cardiff Wales
59h 05m
2 stops
BOS17:40Boston Logan Intl
31 Aug
BOS07:25Boston Logan Intl
21h 50m
2 stops
CWL10:15Cardiff Wales
£899
WestJet
27 Aug
CWL11:35Cardiff Wales
59h 05m
2 stops
BOS17:40Boston Logan Intl
31 Aug
BOS18:30Boston Logan Intl
58h 45m
2 stops
CWL10:15Cardiff Wales
£923
WestJet
27 Aug
CWL11:35Cardiff Wales
59h 05m
2 stops
BOS17:40Boston Logan Intl
31 Aug
BOS18:30Boston Logan Intl
58h 45m
2 stops
CWL10:15Cardiff Wales
£926

momondo Fare Finder

 
Customise 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, momondo users made 279,928 searches. Data last updated 8 June 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 return flight
Fastest return journey

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Mon 20/7

11:35-19:15

1 stop12h 40m

Boston Logan Intl

Mon 3/8

10:05-10:15

1 stop19h 10m

£486

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Thu 2/7

11:35-16:44

1 stop34h 09m

Boston Logan Intl

Thu 9/7

20:25-10:15

1 stop32h 50m

£506

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Mon 6/7

11:35-09:05

1 stop26h 30m

Boston Logan Intl

Mon 13/7

10:05-10:15

1 stop19h 10m

£526

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Thu 2/7

11:35-10:29

1 stop27h 54m

Boston Logan Intl

Thu 9/7

16:45-10:15

2 stops36h 30m

£529

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Thu 2/7

22:50-19:15

2 stops25h 25m

Boston Logan Intl

Thu 9/7

10:50-22:20

2 stops30h 30m

£538

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Thu 2/7

22:50-20:55

3 stops27h 05m

Boston Logan Intl

Thu 9/7

10:50-22:20

2 stops30h 30m

£546

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Mon 20/7

11:35-21:27

2 stops14h 52m

Boston Logan Intl

Mon 3/8

10:05-10:15

1 stop19h 10m

£555

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Mon 6/7

11:35-21:27

2 stops14h 52m

Boston Logan Intl

Mon 13/7

10:05-10:15

1 stop19h 10m

£555

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Tue 7/7

11:35-19:15

1 stop12h 40m

Boston Logan Intl

Tue 14/7

20:10-10:15

1 stop33h 05m

£557

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Thu 2/7

22:50-20:55

3 stops27h 05m

Boston Logan Intl

Thu 9/7

05:45-22:20

3 stops35h 35m

£558

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Boston from

How to get the cheapest flight ticket from Cardiff to Boston

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Which airlines fly to Boston?

Aer Lingus, Virgin Atlantic and KLM are the top three most popular airlines that fly to Boston from Cardiff according to our data. Aer Lingus is the first choice among our users, with 41% of people opting to fly with this airline when travelling to Boston. Keep in mind that there are 4 different airlines that fly to Boston on a routine basis, so you have a few additional options to choose from.

When to book flights from Cardiff to Boston

Are you open to changing your travel dates? Check out the ideal times to fly from Cardiff to Boston according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap Cardiff to Boston (CWL to BOS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Cardiff to Boston

Fastest flight time

11h 55m

Direct flights

None
The fastest flight from Cardiff to Boston takes 11h 55m
There are no direct flights from Cardiff to Boston. There are no popular flight routes from Cardiff to Boston.
Search flight deals

Frequently asked questions about flying from Cardiff to Boston

  • How far is Cardiff Wales to Boston Logan Intl by plane?

    The straight-line distance from Cardiff Wales to Boston Logan Intl is 3144.0 mi. A reasonable flight in good conditions will take 11h 55m.

  • When did momondo last update prices for flights from Cardiff Wales Airport to Boston Logan Intl Airport?

    Prices for flights from Cardiff Wales Airport to Boston Logan Intl Airport were last updated today.

  • How many operators does momondo search for flights from Cardiff Wales Airport to Boston Logan Intl Airport?

  • How old do you have to be to fly from Cardiff Wales Airport to Boston Logan Intl Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Cardiff Wales Airport to Boston Logan Intl Airport.

  • What documentation or ID do you need to fly to Boston Logan Intl Airport?

    The required travel and health documents for your Boston Logan Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Boston Logan Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular airline from Cardiff to Boston?

Best airlines flying from Cardiff to Boston

Compare and see reviews for airlines that fly from Cardiff to Boston with momondo
Airline
Rating
Free Cancellation
Price
Virgin AtlanticPriceFrom £449Free CancellationRating
7.5
689 reviews
Search Virgin Atlantic flights

Travelling to a place near Boston?

Book flights to Boston if you plan to visit one of these locations
Salem
Cambridge
Waltham
Braintree
Dedham
Brookline
Plymouth
Burlington
Falmouth
Chelsea
Foxborough
Randolph
York Beach
Needham
Quincy
Wells
Amherst
Concord
Everett
Sandwich

Why use momondo?

Why should I use momondo to find a flight deal from Cardiff to Boston?

Finding the right flight to Boston from Cardiff is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Boston quick and easy, saving you time and money.

Can I find flights from Cardiff to Boston with flexible booking policies on momondo?

momondo does allow users to show only those flights to Boston from Cardiff which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Cardiff to Boston?

momondo helps you find the best flight between Cardiff and Boston by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Cardiff to Boston right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Boston from Cardiff. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your Boston trip

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