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Cardiff

$463+ Cheap flights from Boston (BOS) to Cardiff (CWL)

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 5/10. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — CWL
mar. 30 — abr. 61
dom. 3/30
dom. 4/6
1 adult, Economy
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Cheap flight deals from Boston to Cardiff

Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) to Cardiff (CWL). 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 marzo 25, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$812
(KLM)

One-way from

$463
(Delta)

Popular in

July

Cheapest in

February

Average price

$787
Provider with most accurate pricing for Boston Logan Intl-Cardiff Wales flight deals.
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Provider most trusted by Cheapflights users for Boston Logan Intl-Cardiff Wales flights.
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From Boston Logan Intl to Cardiff Wales
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One-way flight from Boston Logan Intl to Cardiff Wales
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Highest demand for flights based on searches. 20% potential increase in price ($259 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($47 potential savings vs. average RT price).
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Average for round-trip flights in March 2025
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Find flight deals from Boston to Cardiff

Cheapest flights from Boston to Cardiff
Explore the most affordable flight options available from Boston to Cardiff. Find the lowest fares from popular airlines and budget airlines, with prices last updated on marzo 25, 2025.

This KLM deal was found by Cheapflights users on 3/24. 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.
mar. 5/136:40 pmBOS - CWL
1 stop17h 05mKLM
lun. 5/195:15 pmCWL - BOS
1 stop30h 05mKLM
Deal found 3/24$812
This Delta deal was found by Cheapflights users on 3/24. 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.
mar. 5/131:00 pmBOS - CWL
2 stops15h 15mDelta
lun. 5/199:50 amCWL - BOS
1 stop11h 35mDelta
Deal found 3/24$824
This Kiwi.com deal was found by Cheapflights users on 3/24. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 7/45:30 pmBOS - CWL
1 stop8h 15mMultiple Airlines
sáb. 7/129:00 amCWL - BOS
2 stops13h 50mMultiple Airlines
Deal found 3/24$1,112
This oojo deal was found by Cheapflights users on 3/24. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 7/45:05 pmBOS - CWL
2 stops42h 45mITA Airways
sáb. 7/129:45 amCWL - BOS
2 stops32h 55mITA Airways
Deal found 3/24$2,009
This Aeromexico deal was found by Cheapflights users on 3/24. 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 Aeromexico is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 6/193:20 pmBOS - CWL
2 stops44h 45mAir France
mar. 7/155:15 pmCWL - BOS
1 stop30h 10mAir France
Deal found 3/24$4,053

Cheapflights Fare Finder

Customize your flight search to find flights from Boston 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 marzo 25, 2025.
Use the filters below to find and compare flights from Boston to Cardiff that are best for you.

Fly from

Boston

Fly to

Cardiff

Route

Depart

Return

Price

BostonCardiff

BOS - CWL

BOSCWL

Boston Logan Intl

mar. 5/13

6:40 pm-4:45 pm

1 stop17h 05m

Cardiff Wales

lun. 5/19

5:15 pm-6:20 pm

1 stop30h 05m

$812

BostonCardiff

BOS - CWL

BOSCWL

Boston Logan Intl

mar. 5/13

1:00 pm-9:15 am

2 stops15h 15m

Cardiff Wales

lun. 5/19

9:50 am-4:25 pm

1 stop11h 35m

$824

BostonCardiff

BOS - CWL

BOSCWL

Boston Logan Intl

vie. 7/4

5:30 pm-6:45 am

1 stop8h 15m

Cardiff Wales

sáb. 7/12

9:00 am-5:50 pm

2 stops13h 50m

$1,112

BostonCardiff

BOS - CWL

BOSCWL

Boston Logan Intl

vie. 7/4

5:05 pm-4:50 pm

2 stops42h 45m

Cardiff Wales

sáb. 7/12

9:45 am-1:40 pm

2 stops32h 55m

$2,009

BostonCardiff

BOS - CWL

BOSCWL

Boston Logan Intl

jue. 6/19

3:20 pm-5:05 pm

2 stops44h 45m

Cardiff Wales

mar. 7/15

5:15 pm-6:25 pm

1 stop30h 10m

$4,053

BostonCardiff

BOS - CWL

BOSCWL

Boston Logan Intl

sáb. 5/10

6:35 pm-9:15 am

1 stop9h 40m

$463

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/23

Compare providers for flights from Boston to Cardiff

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Boston to Cardiff in March.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Boston-Cardiff flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Boston-Cardiff flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Boston-Cardiff flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Boston-Cardiff flights, Cheapflights users trust FlightHub the most. FlightHub 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 Boston-Cardiff 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 Boston to Cardiff

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

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

Currently, February is the cheapest month in which you can book a flight from Boston to Cardiff (average of $773). Flying from Boston to Cardiff in June is currently the most expensive (average of $1,622). 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 BOS to CWL?

Find hourly flight availability from Boston 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 marzo 25, 2025.

A simple way to save on the total cost of your ticket is to fly from Boston to Cardiff at noon. If you’re flexible enough to do this you can expect to save up to 5% on your trip compared to booking a flight in the morning.

Rainfall in Cardiff by month

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

In terms of precipitation, rainfall in Cardiff ranges from 2.0 - 3.5 inches per month. January is typically the wettest month, when rainfall can reach 3.5 in. April is typically the driest time to visit Cardiff when rainfall is around 2.0 in.

Temperature in Cardiff by month

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

If weather is an important factor for your trip to Cardiff, 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 64.4 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 39.2 F).

Reviews of airlines servicing Cardiff

Get insights into the airlines that provide service to Cardiff. 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 Cardiff. Reviews last updated marzo 25, 2025.
Delta
8.0
Very good
7,890 reviews

Entertainment

7.9

Crew

8.5

Comfort

8.0

Boarding

8.2

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,890 reviews
Delta
8.0
Very good
7,890 reviews

Entertainment

7.9

Crew

8.5

Comfort

8.0

Boarding

8.2

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
KLM
7.8
Good
1,318 reviews
Delta
8.0
Very good
7,890 reviews

Entertainment

7.9

Crew

8.5

Comfort

8.0

Boarding

8.2

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Air France
7.4
Good
1,422 reviews
Delta
8.0
Very good
7,890 reviews

Entertainment

7.9

Crew

8.5

Comfort

8.0

Boarding

8.2

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
ITA Airways
6.7
Okay
945 reviews
Delta
8.0
Very good
7,890 reviews

Entertainment

7.9

Crew

8.5

Comfort

8.0

Boarding

8.2

Food

7.3

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

Find useful and relevant information for your journey from Boston to Cardiff. 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 Boston to Cardiff round-trip?

    Our cheapest airline available from Boston to Cardiff is KLM. Our recent data shows that you can find tickets from as low as $812 on this airline. Additional options worth looking into are Delta and ITA Airways, starting at $824 and $2,009 round-trip. You may be able to fly from Boston to Cardiff for 18% less than the average price by searching for these airlines.

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

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

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

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

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

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

    Currently, February is the cheapest month in which you can book a flight from Boston to Cardiff (average of $773). Flying from Boston to Cardiff in June is currently the most expensive (average of $1,622). 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 Boston?

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Top 2 airlines flying from Boston to Cardiff

Discover the top 2 airlines that operate flights from Boston 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 marzo 25, 2025.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$773Average$922FlexibilityNo cancel feeOn-time75%
DeltaCheapest$791Average$992FlexibilityNo cancel feeOn-timeN/A
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