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Cheap flights from Massachusetts to Cardiff from $333

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Massachusetts to Cardiff departing on 8/10. 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
0 bags

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Find the cheapest flights from Massachusetts to Cardiff

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
11:30 pm - 10:50 pm
BOS
-
CWL
18h 20m
1 stop
Multiple Airlines Logo
10:10 pm - 9:05 pm
CWL
-
BOS
51h 55m
2 stops
$768Multiple Airlines
Mon, May 4 - Mon, May 11
Multiple Airlines Logo
11:30 pm - 11:05 pm
BOS
-
CWL
18h 35m
1 stop
Multiple Airlines Logo
10:50 pm - 5:35 pm
CWL
-
BOS
23h 45m
2 stops
$802Multiple Airlines
Tue, May 12 - Thu, May 21
Multiple Airlines Logo
9:15 pm - 10:25 pm
BOS
-
CWL
20h 10m
1 stop
Multiple Airlines Logo
11:30 pm - 5:35 pm
CWL
-
BOS
23h 05m
2 stops
$806Multiple Airlines
Wed, Apr 22 - Wed, May 13
Multiple Airlines Logo
9:15 pm - 11:05 pm
BOS
-
CWL
20h 50m
1 stop
Multiple Airlines Logo
4:15 pm - 9:05 pm
CWL
-
BOS
33h 50m
2 stops
$807Multiple Airlines
Tue, May 5 - Tue, May 12
Multiple Airlines Logo
11:30 pm - 10:25 pm
BOS
-
CWL
17h 55m
1 stop
Multiple Airlines Logo
1:35 pm - 9:05 pm
CWL
-
BOS
36h 30m
2 stops
$852Multiple Airlines
Wed, May 6 - Mon, May 11
KLM Logo
8:00 am - 9:15 am
BDL
-
CWL
20h 15m
2 stops
KLM Logo
5:15 pm - 8:18 pm
CWL
-
BDL
32h 03m
2 stops
$1,035KLM
Sun, Sep 6 - Sun, Sep 13
KLM Logo
4:54 pm - 4:45 pm
BDL
-
CWL
18h 51m
2 stops
KLM Logo
5:15 pm - 6:04 pm
CWL
-
BDL
29h 49m
2 stops
$1,212KLM
Thu, Apr 2 - Sun, Apr 5
KLM Logo
6:59 pm - 4:45 pm
BDL
-
CWL
16h 46m
2 stops
KLM Logo
5:15 pm - 4:06 pm
CWL
-
BDL
27h 51m
2 stops
$1,276KLM
Mon, Jun 1 - Mon, Jun 8
Delta Logo
7:12 pm - 5:05 pm
BDL
-
CWL
16h 53m
2 stops
Delta Logo
9:45 am - 11:56 pm
CWL
-
BDL
19h 11m
2 stops
$5,861Delta
Fri, Apr 3 - Tue, Apr 14
Delta Logo
4:54 pm - 5:05 pm
BDL
-
CWL
19h 11m
2 stops
Delta Logo
9:50 am - 9:22 pm
CWL
-
BDL
16h 32m
2 stops
$7,886Delta
Fri, Apr 3 - Sun, Apr 12

KLM flights from Massachusetts to Cardiff

Our best KLM deals on Massachusetts to Cardiff flight tickets
KLM
Apr 22
BOS4:35 pmBoston Logan Intl
11h 40m
1 stop
CWL9:15 amCardiff Wales
May 13
CWL5:15 pmCardiff Wales
25h 01m
1 stop
BOS1:16 pmBoston Logan Intl
$1,001
KLM
Sep 6
BOS7:00 pmBoston Logan Intl
16h 45m
1 stop
CWL4:45 pmCardiff Wales
Sep 14
CWL9:45 amCardiff Wales
32h 34m
1 stop
BOS1:19 pmBoston Logan Intl
$1,033
KLM
Sep 6
BDL8:00 amHartford Bradley Intl
20h 15m
2 stops
CWL9:15 amCardiff Wales
Sep 13
CWL5:15 pmCardiff Wales
32h 03m
2 stops
BDL8:18 pmHartford Bradley Intl
$1,035

Delta flights from Massachusetts to Cardiff

Our best Delta deals on Massachusetts to Cardiff flight tickets
Delta
Apr 22
BOS12:30 pmBoston Logan Intl
15h 45m
2 stops
CWL9:15 amCardiff Wales
May 13
CWL9:45 amCardiff Wales
11h 40m
1 stop
BOS4:25 pmBoston Logan Intl
$1,005
Delta
Apr 22
BOS12:30 pmBoston Logan Intl
15h 45m
2 stops
CWL9:15 amCardiff Wales
May 13
CWL9:45 amCardiff Wales
18h 44m
2 stops
BOS11:29 pmBoston Logan Intl
$1,015
Delta
Sep 6
BOS1:10 pmBoston Logan Intl
15h 05m
2 stops
CWL9:15 amCardiff Wales
Sep 14
CWL9:45 amCardiff Wales
11h 50m
1 stop
BOS4:35 pmBoston Logan Intl
$1,047

momondo Fare Finder

 
Customize your flight search to find flights from Massachusetts to Cardiff 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 832,500 searches. Data last updated March 24, 2026.
Use the filters below to find and compare flights from Massachusetts to Cardiff that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BostonCardiff

BOS - CWL

BOSCWL

Boston Logan Intl

Mon 5/4

11:30 pm-10:50 pm

1 stop18h 20m

Cardiff Wales

Mon 5/11

10:10 pm-9:05 pm

2 stops51h 55m

$768

BostonCardiff

BOS - CWL

BOSCWL

Boston Logan Intl

Tue 5/12

11:30 pm-11:05 pm

1 stop18h 35m

Cardiff Wales

Thu 5/21

10:50 pm-5:35 pm

2 stops23h 45m

$802

BostonCardiff

BOS - CWL

BOSCWL

Boston Logan Intl

Wed 4/22

9:15 pm-10:25 pm

1 stop20h 10m

Cardiff Wales

Wed 5/13

11:30 pm-5:35 pm

2 stops23h 05m

$806

BostonCardiff

BOS - CWL

BOSCWL

Boston Logan Intl

Tue 5/5

9:15 pm-11:05 pm

1 stop20h 50m

Cardiff Wales

Tue 5/12

4:15 pm-9:05 pm

2 stops33h 50m

$807

BostonCardiff

BOS - CWL

BOSCWL

Boston Logan Intl

Wed 5/6

11:30 pm-10:25 pm

1 stop17h 55m

Cardiff Wales

Mon 5/11

1:35 pm-9:05 pm

2 stops36h 30m

$852

HartfordCardiff

BDL - CWL

BDLCWL

Hartford Bradley Intl

Sun 9/6

8:00 am-9:15 am

2 stops20h 15m

Cardiff Wales

Sun 9/13

5:15 pm-8:18 pm

2 stops32h 03m

$1,035

HartfordCardiff

BDL - CWL

BDLCWL

Hartford Bradley Intl

Thu 4/2

4:54 pm-4:45 pm

2 stops18h 51m

Cardiff Wales

Sun 4/5

5:15 pm-6:04 pm

2 stops29h 49m

$1,212

HartfordCardiff

BDL - CWL

BDLCWL

Hartford Bradley Intl

Mon 6/1

6:59 pm-4:45 pm

2 stops16h 46m

Cardiff Wales

Mon 6/8

5:15 pm-4:06 pm

2 stops27h 51m

$1,276

HartfordCardiff

BDL - CWL

BDLCWL

Hartford Bradley Intl

Fri 4/3

7:12 pm-5:05 pm

2 stops16h 53m

Cardiff Wales

Tue 4/14

9:45 am-11:56 pm

2 stops19h 11m

$5,861
Quickest round-trip

HartfordCardiff

BDL - CWL

BDLCWL

Hartford Bradley Intl

Fri 4/3

4:54 pm-5:05 pm

2 stops19h 11m

Cardiff Wales

Sun 4/12

9:50 am-9:22 pm

2 stops16h 32m

$7,886

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 16 resultsSorted by cheapest first
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See travel insights to Cardiff from

How to get the cheapest flight ticket from Massachusetts to Cardiff

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 month to fly to Cardiff?

The month of February is, on average, the cheapest month to fly to Cardiff from Massachusetts, with most prices found around $687. If you aren’t able to travel to Cardiff during the month of February, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $735.

Cheap Massachusetts to Cardiff flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Massachusetts to Cardiff

Fastest flight time

10h 40m

Direct flights

None
The fastest flight from Massachusetts to Cardiff takes 10h 40m
There are no direct flights from Massachusetts to Cardiff. There are no popular flight routes from Massachusetts to Cardiff.
Search flight deals

  • When did momondo last update prices for flights from Massachusetts to Cardiff Wales Airport?

    Prices for flights from Massachusetts to Cardiff Wales Airport are updated daily.

  • How many operators does momondo search for flights from Massachusetts to Cardiff Wales Airport?

  • How old do you have to be to fly from Massachusetts to Cardiff Wales Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Massachusetts to Cardiff Wales Airport.

  • What documentation or ID do you need to fly to Cardiff Wales Airport?

    The required travel and health documents for your Cardiff Wales 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 Cardiff Wales Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Massachusetts to Cardiff

Compare and see reviews for airlines that fly from Massachusetts to Cardiff with momondo
Airline
Rating
Free Cancellation
Price
KLMPriceFrom $644Free CancellationRating
7.8
1,477 reviews
Search KLM flights
DeltaPriceFrom $808Free CancellationRating
7.9
8,323 reviews
Search Delta flights

Why use momondo?

Why should I use momondo to find a flight deal from Massachusetts to Cardiff?

It is quick and easy to find Massachusetts to Cardiff flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Cardiff that suits you.

Can I find flights from Massachusetts to Cardiff with flexible booking policies on momondo?

All flight searches from Massachusetts to Cardiff on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Massachusetts to Cardiff?

Once you have performed a search for Massachusetts to Cardiff flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Massachusetts to Cardiff right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Massachusetts to Cardiff flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

An easier way to manage your Cardiff trip

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Fly your favorite airline to Cardiff

Airlines are sorted and displayed according to clicks in the past 7 days on momondo
Aer Lingus
KLM
Delta