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Cardiff

$338+ 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 5/11. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — CWL
Feb 26 — Mar 51
Wed 2/26
Wed 3/5
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 February 21, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$661
(Mytrip)

One-way from

$338
(Kiwi.com)

Popular in

July

Cheapest in

February

Average price

$774
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. 17% potential increase in price ($219 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($45 potential savings vs. average RT price).
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Average for round-trip flights in February 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 February 21, 2025.

This Mytrip deal was found by Cheapflights users on 2/20. 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.
Sun 4/67:15 pmBOS - CWL
2 stops12h 30mMultiple Airlines
Sun 4/1311:00 amCWL - BOS
2 stops35h 50mMultiple Airlines
Deal found 2/20$661
This Virgin Atlantic deal was found by Cheapflights users on 2/20. 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.
Sun 10/126:45 pmBOS - CWL
1 stop17h 00mVirgin Atlantic
Wed 10/229:50 amCWL - BOS
1 stop11h 40mVirgin Atlantic
Deal found 2/20$780
This Delta deal was found by Cheapflights users on 2/20. 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.
Sun 10/127:25 pmBOS - CWL
2 stops16h 20mDelta
Wed 10/229:50 amCWL - BOS
1 stop11h 40mDelta
Deal found 2/20$785
This KLM deal was found by Cheapflights users on 2/20. 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.
Sat 3/228:05 pmBOS - CWL
1 stop9h 45mKLM
Sat 3/295:25 pmCWL - BOS
1 stop28h 55mKLM
Deal found 2/20$831
This Air France deal was found by Cheapflights users on 2/20. 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 5/154:40 pmBOS - CWL
1 stop19h 05mAir France
Fri 5/239:50 amCWL - BOS
1 stop13h 30mAir France
Deal found 2/20$866
This Gurufare deal was found by Cheapflights users on 2/20. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/29:55 pmBOS - CWL
2 stops29h 25mAer Lingus
Mon 7/712:00 pmCWL - BOS
2 stops37h 10mAer Lingus
Deal found 2/20$1,962

Find flights from Boston to Cardiff within your budget

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 February 21, 2025.

Fly from

Boston

Fly to

Cardiff

Route

Depart

Return

Price

BostonCardiff

BOS - CWL

BOSCWL

Boston Logan Intl

Sun 4/6

7:15 pm-12:45 pm

2 stops12h 30m

Cardiff Wales

Sun 4/13

11:00 am-5:50 pm

2 stops35h 50m

$661

BostonCardiff

BOS - CWL

BOSCWL

Boston Logan Intl

Mon 3/3

7:07 pm-4:55 pm

1 stop16h 48m

Cardiff Wales

Mon 3/17

10:20 am-10:33 pm

2 stops16h 13m

$791

BostonCardiff

BOS - CWL

BOSCWL

Boston Logan Intl

Sat 3/22

8:05 pm-9:50 am

1 stop9h 45m

Cardiff Wales

Sat 3/29

5:25 pm-6:20 pm

1 stop28h 55m

$831

BostonCardiff

BOS - CWL

BOSCWL

Boston Logan Intl

Thu 5/15

4:40 pm-4:45 pm

1 stop19h 05m

Cardiff Wales

Fri 5/23

9:50 am-6:20 pm

1 stop13h 30m

$866

BostonCardiff

BOS - CWL

BOSCWL

Boston Logan Intl

Mon 3/3

7:07 pm-9:55 am

1 stop9h 48m

Cardiff Wales

Mon 3/17

5:25 pm-2:25 pm

1 stop25h 00m

$1,211

BostonCardiff

BOS - CWL

BOSCWL

Boston Logan Intl

Wed 7/2

9:55 pm-8:20 am

2 stops29h 25m

Cardiff Wales

Mon 7/7

12:00 pm-8:10 pm

2 stops37h 10m

$1,962

BostonCardiff

BOS - CWL

BOSCWL

Boston Logan Intl

Sun 5/11

11:35 pm-3:55 pm

3 stops35h 20m

$338

BostonCardiff

BOS - CWL

BOSCWL

Boston Logan Intl

Sun 5/11

6:40 pm-9:15 am

1 stop9h 35m

$462

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

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 February.
ProviderPrice AccuracyTrust Score*
FlightHubPrice 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.

Travel insights for flights from Boston to Cardiff

Get recent, data-driven insights about flights from Boston to Cardiff including ideal travel times, pricing trends, and more.

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 February 21, 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 February 21, 2025.
Delta
8.0
Very good
8,217 reviews

Comfort

8.0

Overall

8.0

Entertainment

7.9

Food

7.3

Crew

8.5

Boarding

8.2

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
8,217 reviews
Delta
8.0
Very good
8,217 reviews

Comfort

8.0

Overall

8.0

Entertainment

7.9

Food

7.3

Crew

8.5

Boarding

8.2

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
1,333 reviews
Delta
8.0
Very good
8,217 reviews

Comfort

8.0

Overall

8.0

Entertainment

7.9

Food

7.3

Crew

8.5

Boarding

8.2

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.

Virgin Atlantic
7.5
Good
654 reviews
Delta
8.0
Very good
8,217 reviews

Comfort

8.0

Overall

8.0

Entertainment

7.9

Food

7.3

Crew

8.5

Boarding

8.2

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
1,449 reviews
Delta
8.0
Very good
8,217 reviews

Comfort

8.0

Overall

8.0

Entertainment

7.9

Food

7.3

Crew

8.5

Boarding

8.2

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 Delta. Our recent data shows that you can find tickets from as low as $791 on this airline. Additional options worth looking into are KLM and Air France, starting at $831 and $866 round-trip. You may be able to fly from Boston to Cardiff for 22% 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.

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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 February 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$774Average$1,092FlexibilityNo cancel feeOn-time75%
DeltaCheapest$791Average$1,023FlexibilityNo cancel feeOn-timeN/A
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