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Cheap flights from Cardiff to Boston from £386

This is the cheapest return flight price found by a momondo user in the last 72 hours by searching for a flight from Cardiff to Boston departing on 25/2. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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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
15:55 - 13:35
CWL
-
BOS
26h 40m2 stops
Multiple Airlines Logo
16:25 - 21:30
BOS
-
CWL
24h 05m2 stops
£386Multiple Airlines
Wed, 25 Feb - Wed, 4 Mar
Delta Logo
10:20 - 18:55
CWL
-
BOS
13h 35m1 stop
Delta Logo
13:04 - 09:50
BOS
-
CWL
15h 46m2 stops
£448Delta
Wed, 25 Feb - Wed, 4 Mar
KLM Logo
17:25 - 18:55
CWL
-
BOS
30h 30m1 stop
KLM Logo
13:04 - 09:50
BOS
-
CWL
15h 46m2 stops
£449KLM
Tue, 24 Feb - Tue, 3 Mar
KLM Logo
10:20 - 22:51
CWL
-
BOS
17h 31m2 stops
KLM Logo
13:04 - 09:50
BOS
-
CWL
15h 46m2 stops
£453KLM
Tue, 24 Feb - Tue, 3 Mar
Delta Logo
10:20 - 13:30
CWL
-
BOS
32h 10m1 stop
Delta Logo
17:00 - 09:50
BOS
-
CWL
35h 50m2 stops
£513Delta
Tue, 27 Jan - Sat, 31 Jan
Multiple Airlines Logo
15:55 - 17:50
CWL
-
BOS
30h 55m3 stops
Multiple Airlines Logo
10:15 - 15:35
BOS
-
CWL
24h 20m3 stops
£536Multiple Airlines
Wed, 25 Feb - Wed, 4 Mar
Multiple Airlines Logo
17:25 - 13:35
CWL
-
BOS
25h 10m3 stops
Multiple Airlines Logo
16:25 - 21:30
BOS
-
CWL
24h 05m2 stops
£549Multiple Airlines
Wed, 25 Feb - Wed, 4 Mar
Multiple Airlines Logo
16:45 - 20:55
CWL
-
BOS
57h 10m2 stops
Multiple Airlines Logo
21:15 - 20:55
BOS
-
CWL
18h 40m1 stop
£639Multiple Airlines
Tue, 27 Jan - Sat, 31 Jan
Multiple Airlines Logo
16:45 - 17:50
CWL
-
BOS
30h 05m2 stops
Multiple Airlines Logo
17:35 - 19:10
BOS
-
CWL
20h 35m3 stops
£754Multiple Airlines
Tue, 24 Feb - Tue, 3 Mar
Multiple Airlines Logo
10:20 - 14:35
CWL
-
BOS
33h 15m3 stops
Multiple Airlines Logo
19:50 - 09:50
BOS
-
CWL
33h 00m3 stops
£774Multiple Airlines
Tue, 27 Jan - Sat, 31 Jan

Delta flights from Cardiff to Boston

Our best Delta deals on Cardiff to Boston flight tickets
Delta
25 Feb
CWL10:20Cardiff Wales
13h 35m
1 stop
BOS18:55Boston Logan Intl
4 Mar
BOS13:04Boston Logan Intl
15h 46m
2 stops
CWL09:50Cardiff Wales
£448
Delta
27 Jan
CWL10:20Cardiff Wales
32h 10m
1 stop
BOS13:30Boston Logan Intl
31 Jan
BOS17:00Boston Logan Intl
35h 50m
2 stops
CWL09:50Cardiff Wales
£513

KLM flights from Cardiff to Boston

Our best KLM deals on Cardiff to Boston flight tickets
KLM
24 Feb
CWL17:25Cardiff Wales
30h 30m
1 stop
BOS18:55Boston Logan Intl
3 Mar
BOS13:04Boston Logan Intl
15h 46m
2 stops
CWL09:50Cardiff Wales
£449
KLM
24 Feb
CWL10:20Cardiff Wales
17h 31m
2 stops
BOS22:51Boston Logan Intl
3 Mar
BOS13:04Boston Logan Intl
15h 46m
2 stops
CWL09:50Cardiff Wales
£453
KLM
27 Jan
CWL17:25Cardiff Wales
25h 05m
1 stop
BOS13:30Boston Logan Intl
31 Jan
BOS19:10Boston Logan Intl
16h 40m
1 stop
CWL16:50Cardiff Wales
£1,220

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 11 January 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

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Wed 25/2

15:55-13:35

2 stops26h 40m

Boston Logan Intl

Wed 4/3

16:25-21:30

2 stops24h 05m

£386

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Wed 25/2

10:20-18:55

1 stop13h 35m

Boston Logan Intl

Wed 4/3

13:04-09:50

2 stops15h 46m

£448

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Tue 24/2

17:25-18:55

1 stop30h 30m

Boston Logan Intl

Tue 3/3

13:04-09:50

2 stops15h 46m

£449

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Tue 24/2

10:20-22:51

2 stops17h 31m

Boston Logan Intl

Tue 3/3

13:04-09:50

2 stops15h 46m

£453

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Tue 27/1

10:20-13:30

1 stop32h 10m

Boston Logan Intl

Sat 31/1

17:00-09:50

2 stops35h 50m

£513

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Wed 25/2

15:55-17:50

3 stops30h 55m

Boston Logan Intl

Wed 4/3

10:15-15:35

3 stops24h 20m

£536

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Wed 25/2

17:25-13:35

3 stops25h 10m

Boston Logan Intl

Wed 4/3

16:25-21:30

2 stops24h 05m

£549

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Tue 27/1

16:45-20:55

2 stops57h 10m

Boston Logan Intl

Sat 31/1

21:15-20:55

1 stop18h 40m

£639

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Tue 24/2

16:45-17:50

2 stops30h 05m

Boston Logan Intl

Tue 3/3

17:35-19:10

3 stops20h 35m

£754

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Tue 27/1

10:20-14:35

3 stops33h 15m

Boston Logan Intl

Sat 31/1

19:50-09:50

3 stops33h 00m

£774

Flights are sorted by cheapest return flights first.

Showing 1-10 of 11 resultsSorted by cheapest first
1
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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

What is the cheapest airline that flies from Cardiff Wales to Boston Logan Intl?

British Airways is the most popular carrier operating from Cardiff Wales to Boston Logan Intl

Which airlines fly to Boston?

KLM, Aer Lingus and Virgin Atlantic are the top three most popular airlines that fly to Boston from Cardiff according to our data. KLM is the first choice among our users, with 40% of people opting to fly with this airline when travelling to Boston. Keep in mind that there are 3 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

25h 10m

Direct flights

None
The fastest flight from Cardiff to Boston takes 25h 10m
There are no direct flights from Cardiff to Boston. There are no popular flight routes from Cardiff to Boston.
Search flight deals

  • 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 25h 10m.

  • 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
KLMPriceFrom £406Free CancellationRating
7.7
1,436 reviews
Search KLM flights
Virgin AtlanticPriceFrom £446Free CancellationRating
7.5
678 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
Waltham
Cambridge
Amherst
Falmouth
Burlington
Plymouth
Randolph
Braintree
Revere
York Beach
Needham
Cape Neddick
Old Orchard Beach
Concord
Sandwich
Everett
Hampton
Quincy
Merrimack

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

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.
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