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$675+ Cheap flights from Massachusetts to Cardiff (CWL)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/2. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — CWL
Dec 3 — Dec 101
Wed 12/3
Wed 12/10
1 adult, Economy
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Find flight deals from Massachusetts to Cardiff

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 November 3, 2025.

This KLM deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/27:05 pmBOS - CWL
1 stop9h 45mKLM
Tue 12/95:25 pmCWL - BOS
1 stop30h 30mKLM
Deal found 11/3$675
This Delta deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/21:05 pmBOS - CWL
2 stops15h 45mDelta
Tue 12/910:20 amCWL - BOS
2 stops17h 06mDelta
Deal found 11/3$690
This KLM deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/307:10 pmBOS - CWL
1 stop16h 35mKLM
Sun 12/710:20 amCWL - BOS
1 stop13h 35mKLM
Deal found 11/3$725
This Mytrip deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/21:00 pmBOS - CWL
2 stops21h 30mMultiple Airlines
Tue 12/91:00 pmCWL - BOS
3 stops31h 57mMultiple Airlines
Deal found 11/3$791
This Air France deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/307:10 pmBOS - CWL
1 stop16h 35mMultiple Airlines
Sun 12/710:20 amCWL - BOS
2 stops13h 39mMultiple Airlines
Deal found 11/3$798
This Air France deal was found by Cheapflights users on 11/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/277:10 pmBOS - CWL
1 stop9h 40mMultiple Airlines
Mon 12/110:20 amCWL - BOS
1 stop32h 00mMultiple Airlines
Deal found 11/2$885
This Air France deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/277:10 pmBOS - CWL
1 stop9h 40mKLM
Mon 12/15:15 pmCWL - BOS
1 stop25h 05mKLM
Deal found 11/3$1,262

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 November 3, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$725
(Delta)

Popular in

June

Cheapest in

February

Average price

$808
Provider with most accurate pricing for Boston Logan Intl-Cardiff Wales flight deals.
Search Deals
Provider most trusted by Cheapflights users for Boston Logan Intl-Cardiff Wales flights.
Search Deals
From Massachusetts to Cardiff Wales
Search Deals
Highest demand for flights based on searches. 16% potential increase in price ($192 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($46 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated November 3, 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

Sun 11/30

7:10 pm-4:45 pm

1 stop16h 35m

Cardiff Wales

Sun 12/7

10:20 am-6:55 pm

1 stop13h 35m

$725

BostonCardiff

BOS - CWL

BOSCWL

Boston Logan Intl

Sun 11/30

7:10 pm-4:45 pm

1 stop16h 35m

Cardiff Wales

Sun 12/7

10:20 am-6:59 pm

2 stops13h 39m

$736

BostonCardiff

BOS - CWL

BOSCWL

Boston Logan Intl

Thu 11/27

7:10 pm-4:45 pm

1 stop16h 35m

Cardiff Wales

Mon 12/1

10:20 am-1:20 pm

1 stop32h 00m

$815

HartfordCardiff

BDL - CWL

BDLCWL

Hartford Bradley Intl

Fri 3/27

2:20 pm-9:50 am

2 stops15h 30m

Cardiff Wales

Tue 3/31

9:50 am-9:16 pm

2 stops40h 26m

$1,093

BostonCardiff

BOS - CWL

BOSCWL

Boston Logan Intl

Thu 11/27

7:10 pm-9:50 am

1 stop9h 40m

Cardiff Wales

Mon 12/1

5:15 pm-1:20 pm

1 stop25h 05m

$1,262

BostonCardiff

BOS - CWL

BOSCWL

Boston Logan Intl

Mon 12/22

9:20 pm-7:00 am

1 stop28h 40m

Cardiff Wales

Tue 12/30

10:00 pm-1:50 pm

1 stop20h 50m

$1,401

BostonCardiff

BOS - CWL

BOSCWL

Boston Logan Intl

Thu 11/27

3:05 pm-9:50 am

2 stops13h 45m

Cardiff Wales

Mon 12/1

10:20 am-10:24 pm

2 stops17h 04m

$1,447

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/1

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 round-trip 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 $596). Flying from Massachusetts to Cardiff in June is currently the most expensive (average of $1,060). 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.

What is the cheapest time of day to fly from MA to CWL?

Find hourly flight availability from Massachusetts to Cardiff. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 3, 2025.

It’s typically best to fly out from Massachusetts to Cardiff in the morning. Doing so could potentially save you 54% on the flight price compared to flying at noon, which is usually more expensive.

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?

    Airlines like Delta fly from Massachusetts to Cardiff in about 16h 35m. The time it takes to get you to your destination can typically vary by up to . The distance from Massachusetts to Cardiff is about 3137 mi.

  • 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 vacation 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 $596). Flying from Massachusetts to Cardiff in June is currently the most expensive (average of $1,060). 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

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Top 2 airlines flying from Massachusetts to Cardiff

Discover the top 2 airlines that operate flights from Massachusetts to Cardiff. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated November 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$766Average$977FlexibilityNo cancel feeOn-time75%
DeltaCheapest$793Average$999FlexibilityNo cancel feeOn-timeN/A

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