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Cheap flights from Massachusetts to Cardiff from £391

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/12. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — CWL
14 Dec — 21 Dec1
1 adult
1 adult, Economy, 0 bags

Find flight deals from Massachusetts to Cardiff

Enter your travel dates to find the best prices.

Cheapest flights from Massachusetts to Cardiff
Explore the most affordable flight options available from Massachusetts to Cardiff. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 14 November 2025.

Wed 31/1217:20BOS - CWL
1 stop11h 45mMultiple Airlines
Thu 8/110:30CWL - BOS
1 stop13h 29mMultiple Airlines
Deal found 13/11£459
Wed 31/1220:50BOS - CWL
1 stop15h 05mMultiple Airlines
Tue 6/110:20CWL - BOS
1 stop32h 10mMultiple Airlines
Deal found 13/11£532
Wed 31/1219:10BOS - CWL
1 stop16h 45mDelta
Wed 7/110:20CWL - BOS
2 stops39h 04mDelta
Deal found 13/11£540
Tue 30/1205:30BOS - CWL
2 stops23h 20mDelta
Thu 8/110:20CWL - BOS
2 stops17h 02mDelta
Deal found 13/11£543
Sun 30/1119:10BOS - CWL
1 stop9h 40mDelta
Sun 7/1210:20CWL - BOS
1 stop13h 35mDelta
Deal found 12/11£551
Sat 15/1121:20BOS - CWL
1 stop18h 35mMultiple Airlines
Mon 17/1123:30CWL - BOS
1 stop19h 25mMultiple Airlines
Deal found 11/11£566
Wed 31/1219:10BOS - CWL
1 stop9h 40mDelta
Tue 6/110:20CWL - BOS
2 stops37h 07mDelta
Deal found 13/11£616
Tue 30/1221:20BOS - CWL
1 stop13h 10mMultiple Airlines
Thu 8/110:30CWL - BOS
1 stop13h 29mMultiple Airlines
Deal found 13/11£619
Tue 30/1212:20BOS - CWL
2 stops16h 30mDelta
Tue 6/110:20CWL - BOS
2 stops37h 07mDelta
Deal found 13/11£619
Mon 29/1219:10BOS - CWL
1 stop9h 40mDelta
Thu 8/110:20CWL - BOS
2 stops17h 02mDelta
Deal found 13/11£633
Sun 28/1220:50BOS - CWL
1 stop32h 00mDelta
Thu 8/110:20CWL - BOS
2 stops17h 02mDelta
Deal found 13/11£635

Cheap flight deals from Massachusetts to Cardiff

Keep the following information in mind while searching for Massachusetts to Cardiff flight deals. Data was last updated 14 November 2025.

Round-trip from

£459

One-way from

£391

Popular in

June

Cheapest in

February

Average price

£614
31/12-8/1
  • 31/12-8/1
  • 2 total stops
  • 25h 14m total
  • Massachusetts to Cardiff
Search Deals
Delta
  • Delta
  • 1/12
  • 2 total stops
  • 15h 48m total
  • Massachusetts to Cardiff
Search Deals
Highest demand for flights based on searches. 16% potential increase in price (£112 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (£27 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

Cheapflights Fare Finder

 
Customise 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, Cheapflights users made 858,174 searches. Data last updated 14 November 2025.
Use the filters below to find and compare flights from Massachusetts to Cardiff that are best for you.

Fly from

Massachusetts

Fly to

Cardiff

Route

Depart

Return

Price

BostonCardiff

BOS - CWL

BOSCWL

Boston Logan Intl

Sat 28/2

21:15-20:55

1 stop18h 40m

Cardiff Wales

Fri 6/3

12:20-18:59

1 stop11h 39m

£496

BostonCardiff

BOS - CWL

BOSCWL

Boston Logan Intl

Wed 31/12

19:10-16:55

1 stop16h 45m

Cardiff Wales

Wed 7/1

10:20-20:24

2 stops39h 04m

£540

BostonCardiff

BOS - CWL

BOSCWL

Boston Logan Intl

Wed 31/12

20:50-09:50

1 stop32h 00m

Cardiff Wales

Thu 8/1

10:20-22:22

2 stops17h 02m

£540

BostonCardiff

BOS - CWL

BOSCWL

Boston Logan Intl

Tue 30/12

05:30-09:50

2 stops23h 20m

Cardiff Wales

Wed 7/1

10:20-20:24

2 stops39h 04m

£543

BostonCardiff

BOS - CWL

BOSCWL

Boston Logan Intl

Tue 30/12

05:30-09:50

2 stops23h 20m

Cardiff Wales

Thu 8/1

10:20-22:22

2 stops17h 02m

£543

BostonCardiff

BOS - CWL

BOSCWL

Boston Logan Intl

Tue 30/12

21:20-15:30

1 stop13h 10m

Cardiff Wales

Thu 8/1

10:30-22:56

2 stops17h 26m

£551

BostonCardiff

BOS - CWL

BOSCWL

Boston Logan Intl

Sun 30/11

19:10-09:50

1 stop9h 40m

Cardiff Wales

Sun 7/12

10:20-18:55

1 stop13h 35m

£551

BostonCardiff

BOS - CWL

BOSCWL

Boston Logan Intl

Wed 31/12

09:30-09:50

2 stops19h 20m

Cardiff Wales

Tue 6/1

10:20-18:27

2 stops37h 07m

£619

BostonCardiff

BOS - CWL

BOSCWL

Boston Logan Intl

Sat 28/2

11:50-09:50

2 stops17h 00m

Cardiff Wales

Fri 6/3

10:20-18:55

1 stop13h 35m

£621

BostonCardiff

BOS - CWL

BOSCWL

Boston Logan Intl

Sun 29/3

18:40-09:15

1 stop9h 35m

Cardiff Wales

Wed 1/4

09:50-13:35

1 stop32h 45m

£628

Flights are sorted by cheapest return flights first.

Deals found on 11/11

Showing 1-10 of 12 results
1
2

Best time to book a flight from Massachusetts to Cardiff

Have a flexible travel schedule? Discover the best time to fly to Cardiff from Massachusetts with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Massachusetts to Cardiff

What is the cheapest month to book a flight from Massachusetts to Cardiff?

Currently, October is the cheapest month in which you can book a flight from Massachusetts to Cardiff (average of £453). Flying from Massachusetts to Cardiff in June is currently the most expensive (average of £806). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Find useful and relevant information for your journey from Massachusetts to Cardiff. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Cardiff from Massachusetts?

    Cardiff Wales (CWL), located 9.1 mi from the city center, is the airport you fly into when you book flights from Massachusetts to Cardiff.

  • How long is the flight from Massachusetts to Cardiff?

    There are many flights that can get you from Massachusetts to Cardiff in 16h 45m. Fly via Delta to get the fastest option. There are 3137 mi between Massachusetts and Cardiff.

  • What are the most popular routes from Massachusetts to Cardiff?

    While some choose either Hartford Bradley Intl - Cardiff Wales or Provincetown - Cardiff Wales, Boston Logan Intl - Cardiff Wales is the most popular route from Massachusetts to Cardiff.

  • Can I find deals for flights from Massachusetts to Cardiff that include hotel bookings?

    Yes. In addition to deals on Massachusetts to Cardiff flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Massachusetts to Cardiff?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Massachusetts to Cardiff.

  • Can I find deals for business class flights from Massachusetts to Cardiff?

    Yes. Cheapflights offers flight deals from Massachusetts to Cardiff by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Massachusetts to Cardiff?

    Currently, October is the cheapest month in which you can book a flight from Massachusetts to Cardiff (average of £453). Flying from Massachusetts to Cardiff in June is currently the most expensive (average of £806). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near Cardiff?

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

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Alternative routes for Massachusetts to Cardiff

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How does Cheapflights help users find flights from Massachusetts to Cardiff?

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Can Cheapflights find flights from Massachusetts to Cardiff with no change fees?

Need flexible booking options for your flight to Cardiff from Massachusetts? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

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Not ready to book yet? You can track prices for flights from Massachusetts to Cardiff on Cheapflights with our Price Alert feature and get notified when better prices are available.

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