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Cheap flights from Cardiff to Boston from £608

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 22/7. 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.
KLM Logo
17:15 - 13:18
CWL
-
BOS
25h 03m
1 stop
KLM Logo
16:40 - 16:45
BOS
-
CWL
19h 05m
1 stop
£608KLM
Wed, 22 Jul - Wed, 29 Jul
British Airways Logo
12:00 - 12:40
CWL
-
BOS
29h 40m
2 stops
British Airways Logo
21:50 - 11:30
BOS
-
CWL
32h 40m
2 stops
£625British Airways
Wed, 5 Aug - Wed, 12 Aug
KLM Logo
17:15 - 13:18
CWL
-
BOS
25h 03m
1 stop
KLM Logo
21:20 - 16:45
BOS
-
CWL
38h 25m
2 stops
£626KLM
Wed, 22 Jul - Wed, 29 Jul
British Airways Logo
12:00 - 12:40
CWL
-
BOS
53h 40m
2 stops
British Airways Logo
21:50 - 11:30
BOS
-
CWL
32h 40m
2 stops
£647British Airways
Wed, 5 Aug - Wed, 12 Aug
Air France Logo
09:45 - 16:37
CWL
-
BOS
11h 52m
1 stop
Air France Logo
16:45 - 16:45
BOS
-
CWL
19h 00m
1 stop
£653Air France
Wed, 5 Aug - Wed, 12 Aug
Multiple Airlines Logo
23:15 - 18:35
CWL
-
BOS
24h 20m
3 stops
Multiple Airlines Logo
20:50 - 22:25
BOS
-
CWL
20h 35m
2 stops
£656Multiple Airlines
Wed, 22 Jul - Wed, 29 Jul
Multiple Airlines Logo
23:15 - 18:35
CWL
-
BOS
24h 20m
2 stops
Multiple Airlines Logo
17:25 - 22:25
BOS
-
CWL
24h 00m
1 stop
£657Multiple Airlines
Wed, 5 Aug - Wed, 12 Aug
Air France Logo
09:45 - 16:37
CWL
-
BOS
11h 52m
1 stop
Air France Logo
16:45 - 16:45
BOS
-
CWL
19h 00m
1 stop
£658Air France
Wed, 5 Aug - Wed, 12 Aug
KLM Logo
09:45 - 16:37
CWL
-
BOS
11h 52m
1 stop
KLM Logo
13:34 - 09:15
BOS
-
CWL
14h 41m
2 stops
£661KLM
Wed, 5 Aug - Wed, 12 Aug
Multiple Airlines Logo
23:15 - 18:35
CWL
-
BOS
24h 20m
3 stops
Multiple Airlines Logo
11:10 - 10:15
BOS
-
CWL
18h 05m
1 stop
£663Multiple Airlines
Wed, 22 Jul - Wed, 29 Jul

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WestJet flights from Cardiff to Boston

Our best WestJet deals on Cardiff to Boston flight tickets
WestJet
5 Sept
CWL11:35Cardiff Wales
39h 45m
2 stops
BOS22:20Boston Logan Intl
9 Sept
BOS18:30Boston Logan Intl
58h 45m
2 stops
CWL10:15Cardiff Wales
£955
WestJet
5 Sept
CWL11:35Cardiff Wales
39h 45m
2 stops
BOS22:20Boston Logan Intl
9 Sept
BOS18:30Boston Logan Intl
58h 45m
2 stops
CWL10:15Cardiff Wales
£956
WestJet
5 Sept
CWL11:35Cardiff Wales
39h 45m
2 stops
BOS22:20Boston Logan Intl
9 Sept
BOS18:30Boston Logan Intl
58h 45m
2 stops
CWL10:15Cardiff Wales
£1,079

British Airways flights from Cardiff to Boston

Our best British Airways deals on Cardiff to Boston flight tickets
British Airways
5 Aug
CWL12:00Cardiff Wales
29h 40m
2 stops
BOS12:40Boston Logan Intl
12 Aug
BOS21:50Boston Logan Intl
32h 40m
2 stops
CWL11:30Cardiff Wales
£625
British Airways
5 Aug
CWL12:00Cardiff Wales
53h 40m
2 stops
BOS12:40Boston Logan Intl
12 Aug
BOS21:50Boston Logan Intl
32h 40m
2 stops
CWL11:30Cardiff Wales
£647

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 24 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

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Wed 22/7

17:15-13:18

1 stop25h 03m

Boston Logan Intl

Wed 29/7

16:40-16:45

1 stop19h 05m

£608

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Wed 5/8

12:00-12:40

2 stops29h 40m

Boston Logan Intl

Wed 12/8

21:50-11:30

2 stops32h 40m

£625

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Wed 22/7

17:15-13:18

1 stop25h 03m

Boston Logan Intl

Wed 29/7

21:20-16:45

2 stops38h 25m

£626

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Wed 5/8

12:00-12:40

2 stops53h 40m

Boston Logan Intl

Wed 12/8

21:50-11:30

2 stops32h 40m

£647

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Wed 5/8

09:45-16:37

1 stop11h 52m

Boston Logan Intl

Wed 12/8

16:45-16:45

1 stop19h 00m

£653

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Wed 22/7

23:15-18:35

3 stops24h 20m

Boston Logan Intl

Wed 29/7

20:50-22:25

2 stops20h 35m

£656

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Wed 5/8

23:15-18:35

2 stops24h 20m

Boston Logan Intl

Wed 12/8

17:25-22:25

1 stop24h 00m

£657

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Wed 5/8

09:45-16:37

1 stop11h 52m

Boston Logan Intl

Wed 12/8

16:45-16:45

1 stop19h 00m

£658
Fastest return journey

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Wed 5/8

09:45-16:37

1 stop11h 52m

Boston Logan Intl

Wed 12/8

13:34-09:15

2 stops14h 41m

£661

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Wed 22/7

23:15-18:35

3 stops24h 20m

Boston Logan Intl

Wed 29/7

11:10-10:15

1 stop18h 05m

£663

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

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 43% 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

25h 03m

Direct flights

None
The fastest flight from Cardiff to Boston takes 25h 03m
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 25h 03m.

  • 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 £454Free CancellationRating
7.5
690 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
Braintree
Dedham
Cambridge
Plymouth
Brookline
Foxborough
Burlington
Falmouth
Chelsea
Randolph
York Beach
Needham
Quincy
Wells
Amherst
Everett
Sandwich
Cape Neddick

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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