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Cheap flights from Cardiff to Boston from £268

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 13/5. 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.
Multiple Airlines Logo
22:50 - 21:05
CWL
-
BOS
27h 15m
2 stops
Multiple Airlines Logo
21:15 - 22:20
BOS
-
CWL
20h 05m
1 stop
£498Multiple Airlines
Thu, 16 Apr - Thu, 23 Apr
Multiple Airlines Logo
22:50 - 21:05
CWL
-
BOS
27h 15m
2 stops
Multiple Airlines Logo
23:30 - 22:50
BOS
-
CWL
18h 20m
1 stop
£514Multiple Airlines
Thu, 16 Apr - Mon, 20 Apr
Multiple Airlines Logo
23:50 - 21:05
CWL
-
BOS
26h 15m
2 stops
Multiple Airlines Logo
21:15 - 22:25
BOS
-
CWL
20h 10m
1 stop
£543Multiple Airlines
Wed, 15 Apr - Wed, 22 Apr
KLM Logo
09:45 - 16:25
CWL
-
BOS
11h 40m
1 stop
KLM Logo
16:35 - 09:15
BOS
-
CWL
11h 40m
1 stop
£548KLM
Wed, 15 Apr - Wed, 22 Apr
Virgin Atlantic Logo
09:45 - 23:52
CWL
-
BOS
19h 07m
2 stops
Virgin Atlantic Logo
05:30 - 09:15
BOS
-
CWL
22h 45m
2 stops
£576Virgin Atlantic
Wed, 15 Apr - Wed, 22 Apr
KLM Logo
17:15 - 13:13
CWL
-
BOS
24h 58m
1 stop
KLM Logo
16:35 - 09:15
BOS
-
CWL
11h 40m
1 stop
£577KLM
Thu, 16 Apr - Thu, 23 Apr
Air France Logo
17:15 - 13:13
CWL
-
BOS
24h 58m
1 stop
Air France Logo
20:25 - 16:45
BOS
-
CWL
15h 20m
1 stop
£577Air France
Thu, 16 Apr - Mon, 20 Apr
Multiple Airlines Logo
21:45 - 18:30
CWL
-
BOS
25h 45m
2 stops
Multiple Airlines Logo
20:25 - 22:00
BOS
-
CWL
20h 35m
2 stops
£595Multiple Airlines
Sun, 29 Mar - Sun, 5 Apr
Delta Logo
09:45 - 23:52
CWL
-
BOS
19h 07m
2 stops
Delta Logo
12:30 - 09:15
BOS
-
CWL
15h 45m
2 stops
£610Delta
Thu, 16 Apr - Mon, 20 Apr
Multiple Airlines Logo
22:50 - 20:20
CWL
-
BOS
26h 30m
2 stops
Multiple Airlines Logo
20:50 - 09:15
BOS
-
CWL
31h 25m
3 stops
£614Multiple Airlines
Thu, 16 Apr - Thu, 23 Apr

Air France flights from Cardiff to Boston

Our best Air France deals on Cardiff to Boston flight tickets
Air France
16 Apr
CWL17:15Cardiff Wales
24h 58m
1 stop
BOS13:13Boston Logan Intl
20 Apr
BOS20:25Boston Logan Intl
15h 20m
1 stop
CWL16:45Cardiff Wales
£577
Air France
29 Mar
CWL17:15Cardiff Wales
50h 40m
2 stops
BOS14:55Boston Logan Intl
5 Apr
BOS17:10Boston Logan Intl
18h 35m
2 stops
CWL16:45Cardiff Wales
£796

Delta flights from Cardiff to Boston

Our best Delta deals on Cardiff to Boston flight tickets
Delta
16 Apr
CWL09:45Cardiff Wales
19h 07m
2 stops
BOS23:52Boston Logan Intl
20 Apr
BOS12:30Boston Logan Intl
15h 45m
2 stops
CWL09:15Cardiff Wales
£610
Delta
1 Apr
CWL09:45Cardiff Wales
18h 17m
2 stops
BOS23:02Boston Logan Intl
8 Apr
BOS13:55Boston Logan Intl
14h 20m
2 stops
CWL09:15Cardiff Wales
£792

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 3 March 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 16/4

22:50-21:05

2 stops27h 15m

Boston Logan Intl

Thu 23/4

21:15-22:20

1 stop20h 05m

£498

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Thu 16/4

22:50-21:05

2 stops27h 15m

Boston Logan Intl

Mon 20/4

23:30-22:50

1 stop18h 20m

£514

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Wed 15/4

23:50-21:05

2 stops26h 15m

Boston Logan Intl

Wed 22/4

21:15-22:25

1 stop20h 10m

£543

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Wed 15/4

09:45-16:25

1 stop11h 40m

Boston Logan Intl

Wed 22/4

16:35-09:15

1 stop11h 40m

£548

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Wed 15/4

09:45-23:52

2 stops19h 07m

Boston Logan Intl

Wed 22/4

05:30-09:15

2 stops22h 45m

£576

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Thu 16/4

17:15-13:13

1 stop24h 58m

Boston Logan Intl

Thu 23/4

16:35-09:15

1 stop11h 40m

£577

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Thu 16/4

17:15-13:13

1 stop24h 58m

Boston Logan Intl

Mon 20/4

20:25-16:45

1 stop15h 20m

£577

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Sun 29/3

21:45-18:30

2 stops25h 45m

Boston Logan Intl

Sun 5/4

20:25-22:00

2 stops20h 35m

£595

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Thu 16/4

09:45-23:52

2 stops19h 07m

Boston Logan Intl

Mon 20/4

12:30-09:15

2 stops15h 45m

£610

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Thu 16/4

22:50-20:20

2 stops26h 30m

Boston Logan Intl

Thu 23/4

20:50-09:15

3 stops31h 25m

£614

Flights are sorted by cheapest return flights first.

Showing 1-10 of 15 resultsSorted by cheapest first
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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

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 38% 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 40m

Direct flights

None
The fastest flight from Cardiff to Boston takes 11h 40m
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 11h 40m.

  • 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
1,461 reviews
Search KLM flights
Virgin AtlanticPriceFrom £446Free CancellationRating
7.5
680 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
Brookline
Falmouth
Burlington
Randolph
Braintree
Revere
York Beach
Quincy
Needham
Foxborough
Plymouth
Cape Neddick
Concord
Old Orchard Beach
Sandwich
Everett

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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