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Cheap flights from Massachusetts to Cardiff from $359

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 8/23. 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

Find the cheapest flights from Massachusetts to Cardiff

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
8:50 pm - 10:50 pmBOS  Boston Logan Intl-CWL Cardiff Wales
21h 00m2 stops Reykjavik Keflavik Intl Dublin
Multiple Airlines Logo
11:15 pm - 6:50 pmCWL  Cardiff Wales-BOS Boston Logan Intl
24h 35m2 stops Dublin Reykjavik Keflavik Intl
$731Multiple Airlines
Mon, Sep 21 - Tue, Oct 6
Multiple Airlines Logo
8:05 pm - 10:50 pmBOS  Boston Logan Intl-CWL Cardiff Wales
21h 45m2 stops Munich Franz Josef Strauss Dublin
Multiple Airlines Logo
10:45 pm - 2:41 pmCWL  Cardiff Wales-BOS Boston Logan Intl
20h 56m2 stops Dublin Montreal Pierre Elliott Trudeau Intl
$760Multiple Airlines
Mon, Sep 7 - Fri, Sep 18
Multiple Airlines Logo
5:25 pm - 11:25 pmBOS  Boston Logan Intl-CWL Cardiff Wales
25h 00m1 stop Dublin
Multiple Airlines Logo
9:45 pm - 9:05 pmCWL  Cardiff Wales-BOS Boston Logan Intl
28h 20m2 stops Alicante Barcelona-El Prat
$767Multiple Airlines
Tue, Sep 15 - Tue, Sep 29
Multiple Airlines Logo
5:25 pm - 10:50 pmBOS  Boston Logan Intl-CWL Cardiff Wales
24h 25m1 stop Dublin
Multiple Airlines Logo
9:45 pm - 9:05 pmCWL  Cardiff Wales-BOS Boston Logan Intl
28h 20m2 stops Alicante Barcelona-El Prat
$769Multiple Airlines
Mon, Sep 21 - Tue, Oct 6
Multiple Airlines Logo
5:25 pm - 10:50 pmBOS  Boston Logan Intl-CWL Cardiff Wales
24h 25m1 stop Dublin
Multiple Airlines Logo
9:45 pm - 9:05 pmCWL  Cardiff Wales-BOS Boston Logan Intl
28h 20m2 stops Alicante Barcelona-El Prat
$773Multiple Airlines
Mon, Sep 21 - Tue, Oct 6
Multiple Airlines Logo
5:25 pm - 10:50 pmBOS  Boston Logan Intl-CWL Cardiff Wales
24h 25m1 stop Dublin
Multiple Airlines Logo
9:45 pm - 9:05 pmCWL  Cardiff Wales-BOS Boston Logan Intl
28h 20m2 stops Alicante Barcelona-El Prat
$776Multiple Airlines
Mon, Sep 21 - Tue, Oct 6
Multiple Airlines Logo
8:05 pm - 10:50 pmBOS  Boston Logan Intl-CWL Cardiff Wales
21h 45m2 stops Munich Franz Josef Strauss Dublin
Multiple Airlines Logo
10:45 pm - 2:41 pmCWL  Cardiff Wales-BOS Boston Logan Intl
20h 56m2 stops Dublin Montreal Pierre Elliott Trudeau Intl
$781Multiple Airlines
Mon, Sep 7 - Fri, Sep 18
Multiple Airlines Logo
9:40 pm - 9:45 pmBOS  Boston Logan Intl-CWL Cardiff Wales
19h 05m2 stops Zurich Dublin
Multiple Airlines Logo
10:10 pm - 4:10 pmCWL  Cardiff Wales-BOS Boston Logan Intl
23h 00m2 stops Dublin Toronto Pearson Intl
$792Multiple Airlines
Sun, Sep 27 - Mon, Oct 12
Multiple Airlines Logo
5:45 pm - 11:25 pmBOS  Boston Logan Intl-CWL Cardiff Wales
24h 40m2 stops Frankfurt am Main Dublin
Multiple Airlines Logo
10:10 pm - 2:41 pmCWL  Cardiff Wales-BOS Boston Logan Intl
21h 31m2 stops Dublin Montreal Pierre Elliott Trudeau Intl
$806Multiple Airlines
Tue, Sep 1 - Mon, Sep 7
Multiple Airlines Logo
8:50 pm - 10:50 pmBOS  Boston Logan Intl-CWL Cardiff Wales
21h 00m3 stops Reykjavik Keflavik Intl London Heathrow Dublin
Multiple Airlines Logo
11:15 pm - 12:30 pmCWL  Cardiff Wales-BOS Boston Logan Intl
42h 15m3 stops Dublin Marseille London Heathrow
$808Multiple Airlines
Mon, Sep 21 - Tue, Oct 6

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KLM flights from Massachusetts to Cardiff

Our best KLM deals on Massachusetts to Cardiff flight tickets
KLM
Nov 16
BOS7:25 pmBoston Logan Intl
9h 25m
1 stop
CWL9:50 amCardiff Wales
Nov 23
CWL5:30 pmCardiff Wales
25h 43m
1 stop
BOS2:13 pmBoston Logan Intl
$1,104
KLM
Nov 16
BOS7:25 pmBoston Logan Intl
9h 25m
1 stop
CWL9:50 amCardiff Wales
Nov 23
CWL5:30 pmCardiff Wales
25h 43m
1 stop
BOS2:13 pmBoston Logan Intl
$1,105
KLM
Nov 16
BOS1:35 pmBoston Logan Intl
15h 15m
2 stops
CWL9:50 amCardiff Wales
Nov 23
CWL5:30 pmCardiff Wales
25h 43m
1 stop
BOS2:13 pmBoston Logan Intl
$1,108

Delta flights from Massachusetts to Cardiff

Our best Delta deals on Massachusetts to Cardiff flight tickets
Delta
Aug 12
BOS4:45 pmBoston Logan Intl
19h 00m
1 stop
CWL4:45 pmCardiff Wales
Aug 21
CWL9:45 amCardiff Wales
13h 45m
1 stop
BOS6:30 pmBoston Logan Intl
$1,184
Delta
Aug 12
BOS3:14 pmBoston Logan Intl
20h 31m
2 stops
CWL4:45 pmCardiff Wales
Aug 21
CWL9:45 amCardiff Wales
11h 52m
1 stop
BOS4:37 pmBoston Logan Intl
$1,188
Delta
Aug 12
BOS6:00 pmBoston Logan Intl
17h 45m
2 stops
CWL4:45 pmCardiff Wales
Aug 21
CWL9:45 amCardiff Wales
18h 56m
2 stops
BOS11:41 pmBoston Logan Intl
$1,198

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 August 7, 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 Boston Logan Intl - CWL Cardiff Wales

BOSCWL

Boston Logan Intl

Mon 9/21

8:50 pm-10:50 pm

2 stops21h 00m

Cardiff Wales

Tue 10/6

11:15 pm-6:50 pm

2 stops24h 35m

$731

BostonCardiff

BOS Boston Logan Intl - CWL Cardiff Wales

BOSCWL

Boston Logan Intl

Mon 9/7

8:05 pm-10:50 pm

2 stops21h 45m

Cardiff Wales

Fri 9/18

10:45 pm-2:41 pm

2 stops20h 56m

$760

BostonCardiff

BOS Boston Logan Intl - CWL Cardiff Wales

BOSCWL

Boston Logan Intl

Tue 9/15

5:25 pm-11:25 pm

1 stop25h 00m

Cardiff Wales

Tue 9/29

9:45 pm-9:05 pm

2 stops28h 20m

$767

BostonCardiff

BOS Boston Logan Intl - CWL Cardiff Wales

BOSCWL

Boston Logan Intl

Mon 9/21

5:25 pm-10:50 pm

1 stop24h 25m

Cardiff Wales

Tue 10/6

9:45 pm-9:05 pm

2 stops28h 20m

$769

BostonCardiff

BOS Boston Logan Intl - CWL Cardiff Wales

BOSCWL

Boston Logan Intl

Mon 9/21

5:25 pm-10:50 pm

1 stop24h 25m

Cardiff Wales

Tue 10/6

9:45 pm-9:05 pm

2 stops28h 20m

$773

BostonCardiff

BOS Boston Logan Intl - CWL Cardiff Wales

BOSCWL

Boston Logan Intl

Mon 9/21

5:25 pm-10:50 pm

1 stop24h 25m

Cardiff Wales

Tue 10/6

9:45 pm-9:05 pm

2 stops28h 20m

$776

BostonCardiff

BOS Boston Logan Intl - CWL Cardiff Wales

BOSCWL

Boston Logan Intl

Mon 9/7

8:05 pm-10:50 pm

2 stops21h 45m

Cardiff Wales

Fri 9/18

10:45 pm-2:41 pm

2 stops20h 56m

$781
Quickest round-trip

BostonCardiff

BOS Boston Logan Intl - CWL Cardiff Wales

BOSCWL

Boston Logan Intl

Sun 9/27

9:40 pm-9:45 pm

2 stops19h 05m

Cardiff Wales

Mon 10/12

10:10 pm-4:10 pm

2 stops23h 00m

$792

BostonCardiff

BOS Boston Logan Intl - CWL Cardiff Wales

BOSCWL

Boston Logan Intl

Tue 9/1

5:45 pm-11:25 pm

2 stops24h 40m

Cardiff Wales

Mon 9/7

10:10 pm-2:41 pm

2 stops21h 31m

$806

BostonCardiff

BOS Boston Logan Intl - CWL Cardiff Wales

BOSCWL

Boston Logan Intl

Mon 9/21

8:50 pm-10:50 pm

3 stops21h 00m

Cardiff Wales

Tue 10/6

11:15 pm-12:30 pm

3 stops42h 15m

$808

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 airline that flies from Massachusetts to Cardiff Wales?

Delta is the most popular carrier operating from Massachusetts to Cardiff Wales

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

9h 25m

Direct flights

None
The fastest flight from Massachusetts to Cardiff takes 9h 25m
There are no direct flights from Massachusetts to Cardiff. There are no popular flight routes from Massachusetts to Cardiff.
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Frequently asked questions about flying from Massachusetts to Cardiff

  • 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 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.

Traveling to a place near Cardiff?

Book flights to Cardiff if you plan to visit one of these locations
Bridgend

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.

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