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Cheap flights from Cardiff to Boston from £474

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 11/6. 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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Cheap return flights

Enter your travel dates to find the best prices.
Virgin Atlantic Logo
17:25 - 14:20
CWL
-
BOS
24h 55m
1 stop
Virgin Atlantic Logo
09:05 - 09:50
BOS
-
CWL
20h 45m
2 stops
£478Virgin Atlantic
Thu, 12 Mar - Mon, 16 Mar
Virgin Atlantic Logo
10:20 - 07:15
CWL
-
BOS
24h 55m
2 stops
Virgin Atlantic Logo
13:55 - 09:50
BOS
-
CWL
15h 55m
2 stops
£483Virgin Atlantic
Thu, 12 Mar - Mon, 16 Mar
Multiple Airlines Logo
19:35 - 20:55
CWL
-
BOS
30h 20m
2 stops
Multiple Airlines Logo
18:10 - 10:05
BOS
-
CWL
11h 55m
1 stop
£535Multiple Airlines
Wed, 4 Mar - Wed, 11 Mar
KLM Logo
10:20 - 22:51
CWL
-
BOS
17h 31m
2 stops
KLM Logo
13:55 - 09:50
BOS
-
CWL
15h 55m
2 stops
£562KLM
Wed, 4 Mar - Wed, 11 Mar
Multiple Airlines Logo
17:25 - 13:20
CWL
-
BOS
24h 55m
1 stop
Multiple Airlines Logo
20:10 - 09:50
BOS
-
CWL
9h 40m
1 stop
£595Multiple Airlines
Wed, 4 Mar - Wed, 11 Mar
Multiple Airlines Logo
10:20 - 22:37
CWL
-
BOS
41h 17m
3 stops
Multiple Airlines Logo
20:50 - 08:05
BOS
-
CWL
31h 15m
3 stops
£790Multiple Airlines
Wed, 4 Mar - Wed, 11 Mar
Multiple Airlines Logo
10:20 - 22:37
CWL
-
BOS
41h 17m
3 stops
Multiple Airlines Logo
13:55 - 09:50
BOS
-
CWL
15h 55m
2 stops
£814Multiple Airlines
Wed, 4 Mar - Wed, 11 Mar

Virgin Atlantic flights from Cardiff to Boston

Our best Virgin Atlantic deals on Cardiff to Boston flight tickets
Virgin Atlantic
12 Mar
CWL17:25Cardiff Wales
24h 55m
1 stop
BOS14:20Boston Logan Intl
16 Mar
BOS09:05Boston Logan Intl
20h 45m
2 stops
CWL09:50Cardiff Wales
£478
Virgin Atlantic
12 Mar
CWL10:20Cardiff Wales
24h 55m
2 stops
BOS07:15Boston Logan Intl
16 Mar
BOS13:55Boston Logan Intl
15h 55m
2 stops
CWL09:50Cardiff Wales
£483

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 18 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

Thu 12/3

17:25-14:20

1 stop24h 55m

Boston Logan Intl

Mon 16/3

09:05-09:50

2 stops20h 45m

£478

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Thu 12/3

10:20-07:15

2 stops24h 55m

Boston Logan Intl

Mon 16/3

13:55-09:50

2 stops15h 55m

£483

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Wed 4/3

19:35-20:55

2 stops30h 20m

Boston Logan Intl

Wed 11/3

18:10-10:05

1 stop11h 55m

£535

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Wed 4/3

10:20-22:51

2 stops17h 31m

Boston Logan Intl

Wed 11/3

13:55-09:50

2 stops15h 55m

£562

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Wed 4/3

17:25-13:20

1 stop24h 55m

Boston Logan Intl

Wed 11/3

20:10-09:50

1 stop9h 40m

£595

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Wed 4/3

10:20-22:37

3 stops41h 17m

Boston Logan Intl

Wed 11/3

20:50-08:05

3 stops31h 15m

£790

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Wed 4/3

10:20-22:37

3 stops41h 17m

Boston Logan Intl

Wed 11/3

13:55-09:50

2 stops15h 55m

£814

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Thu 11/6

11:35-06:09

2 stops23h 34m

£474

Flights are sorted by cheapest return flights first.

Sorted by cheapest first

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 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

27h 30m

Direct flights

None
The fastest flight from Cardiff to Boston takes 27h 30m
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 27h 30m.

  • 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 £407Free CancellationRating
7.7
1,441 reviews
Search KLM flights
Virgin AtlanticPriceFrom £447Free 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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