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$338+ Cheap flights from Cardiff (CWL) to Boston (BOS)

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 5/20. Fares are subject to change and may not be available on all flights or dates of travel.
CWL — BOS
Apr 27 — May 41
Sun 4/27
Sun 5/4
1 adult, Economy
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Cheap flight deals from Cardiff to Boston

Discover tips and strategies to find the most affordable flight options for your journey from Cardiff (CWL) to Boston (BOS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated April 22, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$723
(KLM)

One-way from

$338
(Kiwi.com)

Popular in

July

Cheapest in

March

Average price

$688
Provider with most accurate pricing for Cardiff Wales-Boston Logan Intl flight deals.
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Provider most trusted by Cheapflights users for Cardiff Wales-Boston Logan Intl flights.
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From Cardiff Wales to Boston Logan Intl
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One-way flight from Cardiff Wales to Boston Logan Intl
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Highest demand for flights based on searches. 19% potential increase in price ($197 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($41 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Find flight deals from Cardiff to Boston

Cheapest flights from Cardiff to Boston
Explore the most affordable flight options available from Cardiff to Boston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 22, 2025.

This KLM deal was found by Cheapflights users on 4/22. 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.
Fri 6/65:15 pmCWL - BOS
1 stop25h 15mKLM
Fri 6/134:40 pmBOS - CWL
1 stop11h 30mKLM
Deal found 4/22$723
This Virgin Atlantic deal was found by Cheapflights users on 4/22. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/65:15 pmCWL - BOS
2 stops19h 11mVirgin Atlantic
Fri 6/136:35 pmBOS - CWL
1 stop9h 35mVirgin Atlantic
Deal found 4/22$728
This EaseMyTrip deal was found by Cheapflights users on 4/22. 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 EaseMyTrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/65:15 pmCWL - BOS
2 stops34h 18mMultiple Airlines
Fri 6/136:05 amBOS - CWL
2 stops22h 05mMultiple Airlines
Deal found 4/22$775

Cheapflights Fare Finder

Customize your flight search to find flights from Cardiff to Boston 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 April 22, 2025.
Use the filters below to find and compare flights from Cardiff to Boston that are best for you.

Fly from

Cardiff

Fly to

Boston

Route

Depart

Return

Price

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Fri 6/6

5:15 pm-1:30 pm

1 stop25h 15m

Boston Logan Intl

Fri 6/13

4:40 pm-9:10 am

1 stop11h 30m

$723

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Fri 6/6

5:15 pm-7:26 am

2 stops19h 11m

Boston Logan Intl

Fri 6/13

6:35 pm-9:10 am

1 stop9h 35m

$728

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Fri 6/6

5:15 pm-10:33 pm

2 stops34h 18m

Boston Logan Intl

Fri 6/13

6:05 am-9:10 am

2 stops22h 05m

$775

CardiffBoston

CWL - BOS

CWLBOS

Cardiff Wales

Tue 5/20

4:20 pm-5:50 pm

3 stops30h 30m

$338

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/22

  • Most accurate provider: When it comes to deals on Cardiff-Boston flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Cardiff-Boston flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Cardiff-Boston flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Cardiff-Boston flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Cardiff-Boston flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Cardiff to Boston

Have a flexible travel schedule? Discover the best time to fly to Boston from Cardiff 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 Cardiff to Boston

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

Currently, January is the cheapest month in which you can book a flight from Cardiff to Boston (average of $218). Flying from Cardiff to Boston in July is currently the most expensive (average of $311). 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.

Rainfall in Boston by month

Plan your trip to Boston by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Boston ranges from 3.1 - 4.0 inches per month. March is typically the wettest month, when rainfall can reach 4.0 in. July is typically the driest time to visit Boston when rainfall is around 3.1 in.

Temperature in Boston by month

Plan your trip to Boston by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Boston, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 30.2 F).

Reviews of airlines servicing Boston

Get insights into the airlines that provide service to Boston. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Boston. Reviews last updated April 22, 2025.
KLM
7.8
Good
1,331 reviews

Comfort

7.7

Overall

7.8

Food

7.3

Crew

8.4

Boarding

7.8

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
KLM
7.8
Good
1,331 reviews
KLM
7.8
Good
1,331 reviews

Comfort

7.7

Overall

7.8

Food

7.3

Crew

8.4

Boarding

7.8

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
Virgin Atlantic
7.4
Good
642 reviews
KLM
7.8
Good
1,331 reviews

Comfort

7.7

Overall

7.8

Food

7.3

Crew

8.4

Boarding

7.8

Entertainment

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.

Related info for your journey

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

  • What are the cheapest airlines flying from Cardiff to Boston round-trip?

    Cheapflights users have booked flights from Cardiff to Boston round-trip from $723. Another airline that can offer you cheap pricing is Virgin Atlantic. KLM is priced at 10% lower than the current average price of a flight leaving 3 months from now.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Cardiff to Boston 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 Cardiff to Boston?

    Currently, January is the cheapest month in which you can book a flight from Cardiff to Boston (average of $218). Flying from Cardiff to Boston in July is currently the most expensive (average of $311). 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

Traveling to a place near Cardiff?

Book flights to Cardiff if you plan to visit one of these locations
Marlborough
Warwick
Cambridge
Waltham
Framingham
Chestnut Hill
Seekonk
Randolph
Brockton
Lowell
Woburn
Somerville
York Beach
Saco
Burlington
West Yarmouth
Smithfield
Lincoln
Salem
Chelsea

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