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Cheap flights from Cardiff to Boston from £587

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 17/6. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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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
23:30 - 09:50
CWL
-
BOS
39h 20m
3 stops
Multiple Airlines Logo
05:45 - 10:15
BOS
-
CWL
23h 30m
2 stops
£587Multiple Airlines
Wed, 17 Jun - Sun, 21 Jun
Multiple Airlines Logo
22:50 - 14:41
CWL
-
BOS
44h 51m
2 stops
Multiple Airlines Logo
23:30 - 22:20
BOS
-
CWL
17h 50m
1 stop
£590Multiple Airlines
Thu, 21 May - Thu, 28 May
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
£601Multiple Airlines
Mon, 15 Jun - Mon, 24 Aug
Multiple Airlines Logo
23:30 - 17:35
CWL
-
BOS
23h 05m
2 stops
Multiple Airlines Logo
05:45 - 10:15
BOS
-
CWL
23h 30m
2 stops
£607Multiple Airlines
Wed, 17 Jun - Sun, 21 Jun
Multiple Airlines Logo
22:10 - 22:39
CWL
-
BOS
29h 29m
3 stops
Multiple Airlines Logo
05:45 - 10:15
BOS
-
CWL
23h 30m
3 stops
£638Multiple Airlines
Mon, 15 Jun - Mon, 24 Aug
Multiple Airlines Logo
11:35 - 21:27
CWL
-
BOS
14h 52m
2 stops
Multiple Airlines Logo
05:45 - 10:15
BOS
-
CWL
23h 30m
3 stops
£654Multiple Airlines
Mon, 15 Jun - Mon, 24 Aug
Multiple Airlines Logo
23:15 - 09:05
CWL
-
BOS
38h 50m
2 stops
Multiple Airlines Logo
23:35 - 23:05
BOS
-
CWL
18h 30m
1 stop
£661Multiple Airlines
Tue, 9 Jun - Tue, 16 Jun
Multiple Airlines Logo
23:30 - 17:35
CWL
-
BOS
23h 05m
2 stops
Multiple Airlines Logo
10:05 - 10:15
BOS
-
CWL
19h 10m
1 stop
£672Multiple Airlines
Wed, 17 Jun - Sun, 21 Jun
Multiple Airlines Logo
11:35 - 09:45
CWL
-
BOS
27h 10m
2 stops
Multiple Airlines Logo
18:30 - 10:15
BOS
-
CWL
34h 45m
2 stops
£687Multiple Airlines
Tue, 9 Jun - Tue, 16 Jun
Multiple Airlines Logo
23:15 - 22:39
CWL
-
BOS
28h 24m
3 stops
Multiple Airlines Logo
18:30 - 10:15
BOS
-
CWL
34h 45m
2 stops
£689Multiple Airlines
Tue, 9 Jun - Tue, 16 Jun

KLM flights from Cardiff to Boston

Our best KLM deals on Cardiff to Boston flight tickets
KLM
21 May
CWL09:45Cardiff Wales
11h 40m
1 stop
BOS16:25Boston Logan Intl
28 May
BOS16:35Boston Logan Intl
19h 10m
1 stop
CWL16:45Cardiff Wales
£765
KLM
21 May
CWL09:45Cardiff Wales
14h 50m
2 stops
BOS19:35Boston Logan Intl
28 May
BOS13:29Boston Logan Intl
14h 46m
2 stops
CWL09:15Cardiff Wales
£819
KLM
23 May
CWL17:35Cardiff Wales
27h 50m
1 stop
BOS16:25Boston Logan Intl
30 May
BOS20:25Boston Logan Intl
31h 50m
1 stop
CWL09:15Cardiff Wales
£828

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 27 April 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

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Wed 17/6

23:30-09:50

3 stops39h 20m

Boston Logan Intl

Sun 21/6

05:45-10:15

2 stops23h 30m

£587

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Thu 21/5

22:50-14:41

2 stops44h 51m

Boston Logan Intl

Thu 28/5

23:30-22:20

1 stop17h 50m

£590

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Mon 15/6

11:35-09:05

1 stop26h 30m

Boston Logan Intl

Mon 24/8

10:05-10:15

1 stop19h 10m

£601

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Wed 17/6

23:30-17:35

2 stops23h 05m

Boston Logan Intl

Sun 21/6

05:45-10:15

2 stops23h 30m

£607

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Mon 15/6

22:10-22:39

3 stops29h 29m

Boston Logan Intl

Mon 24/8

05:45-10:15

3 stops23h 30m

£638
Fastest return journey

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Mon 15/6

11:35-21:27

2 stops14h 52m

Boston Logan Intl

Mon 24/8

05:45-10:15

3 stops23h 30m

£654

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Tue 9/6

23:15-09:05

2 stops38h 50m

Boston Logan Intl

Tue 16/6

23:35-23:05

1 stop18h 30m

£661

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Wed 17/6

23:30-17:35

2 stops23h 05m

Boston Logan Intl

Sun 21/6

10:05-10:15

1 stop19h 10m

£672

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Tue 9/6

11:35-09:45

2 stops27h 10m

Boston Logan Intl

Tue 16/6

18:30-10:15

2 stops34h 45m

£687

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Tue 9/6

23:15-22:39

3 stops28h 24m

Boston Logan Intl

Tue 16/6

18:30-10:15

2 stops34h 45m

£689

Flights are sorted by cheapest return flights first.

Showing 1-10 of 13 resultsSorted by cheapest first
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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

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

WestJet and Delta are the most popular carriers 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 35% 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

39h 20m

Direct flights

None
The fastest flight from Cardiff to Boston takes 39h 20m
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 39h 20m.

  • 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 £402Free CancellationRating
7.8
1,508 reviews
Search KLM flights
Virgin AtlanticPriceFrom £442Free CancellationRating
7.4
688 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
Dedham
Amherst
Brookline
Falmouth
Burlington
Chelsea
Foxborough
Randolph
Braintree
York Beach
Needham
Quincy
Concord
Everett
Plymouth
Cape Neddick
Hampton

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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