How do I get Price Alerts for flights from Boston to Cardiff?

You can take advantage of momondo’s Price Alerts by first searching for your flights to Boston from Cardiff . Flight offers will be shown to you in real-time. From there you can create a Price Alert by using our on-site widget.

How can I save money on flights from Boston to Cardiff with momondo?

Plan your trips smart with the “Price Forecast” feature, which uses flight data to help you pick the best days to fly for the lowest fares. Our “Price Calendar” helps you get the most for your money by showing you when it’s most advantageous to fly. Curate your own travel experiences for less with “Explore” . Expert travel hacks to fuel your next adventure are a click away with “Discover” by momondo. Set up our “Price Alerts” to track fare changes and book when prices are at their lowest point.

How does momondo find its flight prices?

momondo shows deals across 700+ competitors all at once. momondo is active in 30 international markets, so you can have access to a wide range of options from airlines and OTAs alike.

When did momondo last update prices for flights from Boston Logan Intl Airport to Cardiff Wales Airport?

Prices for flights from Boston Logan Intl Airport to Cardiff Wales Airport are refreshed on a daily basis.

How old do you have to be to fly from Boston Logan Intl Airport to Cardiff Wales 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 Boston Logan Intl Airport to Cardiff Wales Airport.

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

The necessary travel and health documents for your Cardiff Wales Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$537 Cheap Flights from Boston to Cardiff in 2026/27

Find the cheapest flights from Boston to Cardiff

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

3:10 pm - 1:00 pmBOS Boston Logan Intl-CWL Cardiff Wales

16h 50m2 stops Toronto Pearson Intl Dublin

8:35 am - 8:20 pmCWL Cardiff Wales-BOS Boston Logan Intl

16h 45m2 stops Dublin Zurich

$537Multiple Airlines

Wed, Nov 11 - Mon, Nov 16

4:10 pm - 1:00 pmBOS Boston Logan Intl-CWL Cardiff Wales

15h 50m2 stops New York John F Kennedy Intl Dublin

8:35 am - 1:55 pmCWL Cardiff Wales-BOS Boston Logan Intl

10h 20m1 stop Dublin

$748Multiple Airlines

Wed, Nov 11 - Mon, Nov 16

9:20 pm - 1:00 pmBOS Boston Logan Intl-CWL Cardiff Wales

10h 40m1 stop Dublin

8:35 am - 1:55 pmCWL Cardiff Wales-BOS Boston Logan Intl

10h 20m1 stop Dublin

$761Multiple Airlines

Wed, Nov 11 - Mon, Nov 16

5:25 pm - 6:55 amBOS Boston Logan Intl-CWL Cardiff Wales

8h 30m1 stop Dublin

2:25 pm - 8:05 pmCWL Cardiff Wales-BOS Boston Logan Intl

9h 40m1 stop Dublin

$811Multiple Airlines

Fri, Oct 23 - Sun, Oct 25

5:25 pm - 11:25 pmBOS Boston Logan Intl-CWL Cardiff Wales

25h 00m1 stop Dublin

11:15 pm - 2:55 pmCWL Cardiff Wales-BOS Boston Logan Intl

20h 40m1 stop Dublin

$845Multiple Airlines

Tue, Oct 13 - Tue, Oct 20

8:50 pm - 11:25 pmBOS Boston Logan Intl-CWL Cardiff Wales

21h 35m2 stops Reykjavik Keflavik Intl Dublin

11:15 pm - 2:55 pmCWL Cardiff Wales-BOS Boston Logan Intl

20h 40m1 stop Dublin

$854Multiple Airlines

Tue, Oct 13 - Tue, Oct 20

5:25 pm - 11:25 pmBOS Boston Logan Intl-CWL Cardiff Wales

25h 00m1 stop Dublin

9:10 pm - 9:15 pmCWL Cardiff Wales-BOS Boston Logan Intl

28h 05m2 stops Malaga Lisbon Humberto Delgado

$879Multiple Airlines

Tue, Oct 13 - Wed, Oct 28

8:50 pm - 11:25 pmBOS Boston Logan Intl-CWL Cardiff Wales

21h 35m2 stops Reykjavik Keflavik Intl Dublin

4:15 pm - 8:20 pmCWL Cardiff Wales-BOS Boston Logan Intl

33h 05m3 stops Malaga Lisbon Humberto Delgado Porto

$910Multiple Airlines

Tue, Oct 13 - Tue, Oct 20

5:25 pm - 6:55 amBOS Boston Logan Intl-CWL Cardiff Wales

8h 30m1 stop Dublin

11:50 pm - 3:40 pmCWL Cardiff Wales-BOS Boston Logan Intl

19h 50m2 stops Dublin Lisbon Humberto Delgado

$919Multiple Airlines

Fri, Oct 23 - Sun, Oct 25

8:50 pm - 11:25 pmBOS Boston Logan Intl-CWL Cardiff Wales

21h 35m2 stops Reykjavik Keflavik Intl Dublin

9:10 pm - 9:15 pmCWL Cardiff Wales-BOS Boston Logan Intl

28h 05m2 stops Malaga Lisbon Humberto Delgado

$922Multiple Airlines

Tue, Oct 13 - Wed, Oct 28

Cheap last minute flights

Enter your travel dates to find the best prices.

9:15 pm - 10:50 pmBOS Boston Logan Intl-CWL Cardiff Wales

20h 35m1 stop Dublin

11:50 pm - 6:35 pmCWL Cardiff Wales-BOS Boston Logan Intl

23h 45m2 stops Dublin Toronto Pearson Intl

$828Multiple Airlines

Mon, Sep 21 - Wed, Sep 23

11:00 pm - 10:50 pmBOS Boston Logan Intl-CWL Cardiff Wales

18h 50m2 stops Reykjavik Keflavik Intl Dublin

11:15 pm - 2:55 pmCWL Cardiff Wales-BOS Boston Logan Intl

20h 40m1 stop Dublin

$903Multiple Airlines

Mon, Sep 21 - Tue, Oct 6

7:00 pm - 4:45 pmBOS Boston Logan Intl-CWL Cardiff Wales

16h 45m1 stop Amsterdam Schiphol

9:45 am - 1:15 pmCWL Cardiff Wales-BOS Boston Logan Intl

32h 30m1 stop Amsterdam Schiphol

$955Delta

Mon, Sep 21 - Tue, Oct 6

9:00 pm - 4:45 pmBOS Boston Logan Intl-CWL Cardiff Wales

38h 45m2 stops New York LaGuardia Amsterdam Schiphol

9:45 am - 11:20 pmCWL Cardiff Wales-BOS Boston Logan Intl

18h 35m2 stops Amsterdam Schiphol New York John F Kennedy Intl

$960Delta

Mon, Sep 21 - Tue, Oct 6

10:45 pm - 10:50 pmBOS Boston Logan Intl-CWL Cardiff Wales

19h 05m2 stops Lisbon Humberto Delgado Dublin

11:50 pm - 6:04 pmCWL Cardiff Wales-BOS Boston Logan Intl

23h 14m2 stops Dublin Toronto Pearson Intl

$986Multiple Airlines

Mon, Sep 21 - Wed, Sep 23

11:15 pm - 10:50 pmBOS Boston Logan Intl-CWL Cardiff Wales

18h 35m3 stops Porto Lisbon Humberto Delgado Dublin

11:50 pm - 6:04 pmCWL Cardiff Wales-BOS Boston Logan Intl

23h 14m2 stops Dublin Toronto Pearson Intl

$1,002Multiple Airlines

Mon, Sep 21 - Wed, Sep 23

11:15 pm - 10:50 pmBOS Boston Logan Intl-CWL Cardiff Wales

18h 35m3 stops Porto Lisbon Humberto Delgado Dublin

11:50 pm - 9:50 amCWL Cardiff Wales-BOS Boston Logan Intl

39h 00m3 stops Dublin Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl

$1,051Multiple Airlines

Mon, Sep 21 - Wed, Sep 23

5:25 pm - 9:15 amBOS Boston Logan Intl-CWL Cardiff Wales

34h 50m2 stops Dublin Amsterdam Schiphol

12:00 pm - 2:55 pmCWL Cardiff Wales-BOS Boston Logan Intl

31h 55m3 stops Belfast City Birmingham Dublin

$1,125Multiple Airlines

Mon, Sep 21 - Tue, Oct 6

11:00 pm - 11:30 amBOS Boston Logan Intl-CWL Cardiff Wales

31h 30m3 stops Reykjavik Keflavik Intl Edinburgh Turnhouse Belfast City

5:15 pm - 8:20 pmCWL Cardiff Wales-BOS Boston Logan Intl

32h 05m3 stops Amsterdam Schiphol Barcelona-El Prat Lisbon Humberto Delgado

$1,336Multiple Airlines

Mon, Sep 21 - Tue, Oct 6

7:00 pm - 9:15 amBOS Boston Logan Intl-CWL Cardiff Wales

9h 15m1 stop Amsterdam Schiphol

9:45 am - 6:30 pmCWL Cardiff Wales-BOS Boston Logan Intl

13h 45m1 stop Amsterdam Schiphol

$1,348Multiple Airlines

Mon, Sep 21 - Wed, Sep 23

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

KLM flights from Boston to Cardiff

Our best KLM deals on Boston to Cardiff flight tickets

KLM

Nov 16

BOS7:25 pmBoston Logan Intl

9h 20m

1 stop

CWL9:45 amCardiff Wales

Nov 23

CWL5:30 pmCardiff Wales

25h 43m

1 stop

BOS2:13 pmBoston Logan Intl

$956

KLM

Nov 16

BOS1:37 pmBoston Logan Intl

15h 08m

2 stops

CWL9:45 amCardiff Wales

Nov 23

CWL5:30 pmCardiff Wales

25h 43m

1 stop

BOS2:13 pmBoston Logan Intl

$961

KLM

Oct 7

BOS1:35 pmBoston Logan Intl

14h 40m

2 stops

CWL9:15 amCardiff Wales

Oct 15

CWL9:50 amCardiff Wales

18h 18m

2 stops

BOS11:08 pmBoston Logan Intl

$971

Delta flights from Boston to Cardiff

Our best Delta deals on Boston to Cardiff flight tickets

Delta

Sep 21

BOS7:00 pmBoston Logan Intl

16h 45m

1 stop

CWL4:45 pmCardiff Wales

Oct 6

CWL9:45 amCardiff Wales

32h 30m

1 stop

BOS1:15 pmBoston Logan Intl

$955

Delta

Oct 13

BOS6:55 pmBoston Logan Intl

16h 50m

1 stop

CWL4:45 pmCardiff Wales

Oct 28

CWL10:20 amCardiff Wales

13h 41m

1 stop

BOS8:01 pmBoston Logan Intl

$957

Delta

Oct 7

BOS12:10 pmBoston Logan Intl

16h 05m

2 stops

CWL9:15 amCardiff Wales

Oct 15

CWL9:50 amCardiff Wales

11h 46m

1 stop

BOS4:36 pmBoston Logan Intl

$960

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BostonCardiff

BOS Boston Logan Intl - CWL Cardiff Wales

BOSCWL

Boston Logan Intl

Wed 11/11

3:10 pm-1:00 pm

2 stops16h 50m

Cardiff Wales

Mon 11/16

8:35 am-8:20 pm

2 stops16h 45m

$537

BostonCardiff

BOS Boston Logan Intl - CWL Cardiff Wales

BOSCWL

Boston Logan Intl

Wed 11/11

4:10 pm-1:00 pm

2 stops15h 50m

Cardiff Wales

Mon 11/16

8:35 am-1:55 pm

1 stop10h 20m

$748

BostonCardiff

BOS Boston Logan Intl - CWL Cardiff Wales

BOSCWL

Boston Logan Intl

Wed 11/11

9:20 pm-1:00 pm

1 stop10h 40m

Cardiff Wales

Mon 11/16

8:35 am-1:55 pm

1 stop10h 20m

$761

Quickest round-trip

BostonCardiff

BOS Boston Logan Intl - CWL Cardiff Wales

BOSCWL

Boston Logan Intl

Fri 10/23

5:25 pm-6:55 am

1 stop8h 30m

Cardiff Wales

Sun 10/25

2:25 pm-8:05 pm

1 stop9h 40m

$811

BostonCardiff

BOS Boston Logan Intl - CWL Cardiff Wales

BOSCWL

Boston Logan Intl

Tue 10/13

5:25 pm-11:25 pm

1 stop25h 00m

Cardiff Wales

Tue 10/20

11:15 pm-2:55 pm

1 stop20h 40m

$845

BostonCardiff

BOS Boston Logan Intl - CWL Cardiff Wales

BOSCWL

Boston Logan Intl

Tue 10/13

8:50 pm-11:25 pm

2 stops21h 35m

Cardiff Wales

Tue 10/20

11:15 pm-2:55 pm

1 stop20h 40m

$854

BostonCardiff

BOS Boston Logan Intl - CWL Cardiff Wales

BOSCWL

Boston Logan Intl

Tue 10/13

5:25 pm-11:25 pm

1 stop25h 00m

Cardiff Wales

Wed 10/28

9:10 pm-9:15 pm

2 stops28h 05m

$879

BostonCardiff

BOS Boston Logan Intl - CWL Cardiff Wales

BOSCWL

Boston Logan Intl

Tue 10/13

8:50 pm-11:25 pm

2 stops21h 35m

Cardiff Wales

Tue 10/20

4:15 pm-8:20 pm

3 stops33h 05m

$910

BostonCardiff

BOS Boston Logan Intl - CWL Cardiff Wales

BOSCWL

Boston Logan Intl

Fri 10/23

5:25 pm-6:55 am

1 stop8h 30m

Cardiff Wales

Sun 10/25

11:50 pm-3:40 pm

2 stops19h 50m

$919

BostonCardiff

BOS Boston Logan Intl - CWL Cardiff Wales

BOSCWL

Boston Logan Intl

Tue 10/13

8:50 pm-11:25 pm

2 stops21h 35m

Cardiff Wales

Wed 10/28

9:10 pm-9:15 pm

2 stops28h 05m

$922

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

When to book flights from Boston to Cardiff

Are you open to changing your travel dates? Check out the ideal times to fly from Boston to Cardiff according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Boston to Cardiff (BOS to CWL) flight deals and tips

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

Best Price Found	$537
Fastest flight time	8h 30m
Direct flights	None

The best flight deal from Boston to Cardiff found on momondo in the last 72 hours is $537

The fastest flight from Boston to Cardiff takes 8h 30m

There are no direct flights from Boston to Cardiff. There are no popular flight routes from Boston to Cardiff.

Search flight deals

Frequently asked questions about flying from Boston to Cardiff

How far is Boston Logan Intl to Cardiff Wales by plane?
There are 3144.0 mi between Boston Logan Intl and Cardiff Wales. By plane, this route typically takes 8h 30m.
When did momondo last update prices for flights from Boston Logan Intl Airport to Cardiff Wales Airport?
Prices for flights from Boston Logan Intl Airport to Cardiff Wales Airport are refreshed on a daily basis.
How old do you have to be to fly from Boston Logan Intl Airport to Cardiff Wales 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 Boston Logan Intl Airport to Cardiff Wales Airport.
What documentation or ID do you need to fly to Cardiff Wales Airport?
The necessary travel and health documents for your Cardiff Wales Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Frequently asked questions about flying from Boston to Cardiff

How do I get Price Alerts for flights from Boston to Cardiff?
You can take advantage of momondo’s Price Alerts by first searching for your flights to Boston from Cardiff. Flight offers will be shown to you in real-time. From there you can create a Price Alert by using our on-site widget.
How can I save money on flights from Boston to Cardiff with momondo?
Plan your trips smart with the “Price Forecast” feature, which uses flight data to help you pick the best days to fly for the lowest fares. Our “Price Calendar” helps you get the most for your money by showing you when it’s most advantageous to fly. Curate your own travel experiences for less with “Explore”. Expert travel hacks to fuel your next adventure are a click away with “Discover” by momondo. Set up our “Price Alerts” to track fare changes and book when prices are at their lowest point.
How does momondo find its flight prices?
momondo shows deals across 700+ competitors all at once. momondo is active in 30 international markets, so you can have access to a wide range of options from airlines and OTAs alike.

Bridgend

Why use momondo?

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

Finding the right flight to Cardiff from Boston 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 Cardiff quick and easy, saving you time and money.

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

Yes. momondo allows you to filter the results for Boston to Cardiff flights to just show those with flexible booking policies.

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

momondo helps you find the best flight between Boston and Cardiff 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 Boston to Cardiff right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Boston to Cardiff flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

An easier way to manage your Cardiff trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Start using Trips

Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

1 adult

Sat 10/17

Sat 10/24

Email me momondo's favorite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United Kingdom

Airlines

Cabin classes

Other United Kingdom destinations

Other flights from Boston

Complete your trip

Feeling lucky

Fly your favorite airline to Cardiff

Aer Lingus

Cheap flights from Boston to Cardiff from $537

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Boston to Cardiff departing on 11/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Find the cheapest flights from Boston to Cardiff

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

KLM flights from Boston to Cardiff

Our best KLM deals on Boston to Cardiff flight tickets

Delta flights from Boston to Cardiff

Our best Delta deals on Boston to Cardiff flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from Boston to Cardiff that are best for you.

When to book flights from Boston to Cardiff

Cheap Boston to Cardiff (BOS to CWL) flight deals and tips

Best Price Found

Fastest flight time

Direct flights

Frequently asked questions about flying from Boston to Cardiff

Frequently asked questions about flying from Boston to Cardiff

Traveling to a place near Cardiff?

Why use momondo?

An easier way to manage your Cardiff trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United Kingdom

Fly your favorite airline to Cardiff

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

Cabin classes currently available on flights to Cardiff

List of cabin classes available on flights landing in Cardiff. Availability may vary depending on flight origin and airline.

Popular cities in the United Kingdom

Popular flights according to clicks in the last 7 days on momondo

Fly to other destinations from Boston

According to popular flight searches on momondo this year

Complete your trip to Cardiff

Explore popular destinations other users love

According to popular flight searches on momondo this year