CWL - BOS

£405 Find Cheap Flights from Cardiff to Boston

This is the cheapest return flight price found by a KAYAK user in the last 72 hours by searching for a flight from Cardiff to Boston departing on 14/9. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Boston

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Cardiff to Boston, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Cardiff to Boston, as well as popular online travel agencies
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Cheap Flights from Cardiff to Boston (CWL-BOS)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Cardiff to Boston that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Cardiff to Boston

Sun, 14 Sep - Sun, 21 Sep
 Logo
11:00 - 18:45CWL-BOS
12h 45m1 stop
 Logo
21:25 - 12:45BOS-CWL
10h 20m1 stop
Sun, 14 Sep - Sun, 21 Sep
Virgin Atlantic Logo
09:50 - 13:40CWL-BOS
32h 50m1 stop
Virgin Atlantic Logo
20:50 - 16:45BOS-CWL
38h 55m2 stops
£483Virgin Atlantic
Find Deal
Sat, 13 Sep - Sat, 20 Sep
 Logo
09:00 - 22:00CWL-BOS
18h 00m2 stops
 Logo
20:50 - 09:15BOS-CWL
31h 25m3 stops
Sun, 14 Sep - Sun, 21 Sep
Delta Logo
09:50 - 16:30CWL-BOS
11h 40m1 stop
Delta Logo
20:50 - 16:45BOS-CWL
14h 55m2 stops
£506Delta
Find Deal
Sun, 14 Sep - Sun, 21 Sep
KLM Logo
17:15 - 16:30CWL-BOS
28h 15m1 stop
KLM Logo
18:45 - 09:15BOS-CWL
9h 30m1 stop
£509KLM
Find Deal
Sun, 14 Sep - Sun, 21 Sep
Delta Logo
09:50 - 22:30CWL-BOS
17h 40m2 stops
Delta Logo
20:50 - 16:45BOS-CWL
14h 55m2 stops
£509Delta
Find Deal
Sun, 31 Aug - Sun, 7 Sep
Delta Logo
09:50 - 16:35CWL-BOS
11h 45m1 stop
Delta Logo
20:51 - 16:45BOS-CWL
14h 54m2 stops
£514Delta
Find Deal
Sat, 13 Sep - Sat, 20 Sep
 Logo
17:35 - 14:40CWL-BOS
26h 05m2 stops
 Logo
17:30 - 10:35BOS-CWL
12h 05m1 stop
Sun, 31 Aug - Sun, 7 Sep
Delta Logo
09:50 - 23:21CWL-BOS
18h 31m2 stops
Delta Logo
20:51 - 16:45BOS-CWL
14h 54m2 stops
£531Delta
Find Deal
Sun, 14 Sep - Sun, 21 Sep
Aer Lingus Logo
12:00 - 18:45CWL-BOS
35h 45m3 stops
Aer Lingus Logo
21:25 - 11:30BOS-CWL
33h 05m3 stops
£885Aer Lingus
Find Deal
Booking Insights

KAYAK's insights & trends for Cardiff to Boston flights

Get data-powered insights and trends into flights from Cardiff to Boston to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from Cardiff to Boston?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest return tickets from Cardiff to Boston were found on Virgin Atlantic (£483) and Delta (£506).


Good to know - Cheap tickets from Cardiff to Boston

Low seasonJune
Cheapest flight£405
Best time to beat the crowds (20% less expensive on average)
Most popular time to fly and prices are also 12% lower on average.
Flight from Cardiff to Boston

When to book flights from Cardiff to Boston

Are your dates flexible? Find out the best times to travel from Cardiff to Boston based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated return price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or returns with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Cardiff to Boston

  • What is the cheapest flight from Cardiff to Boston?

    In the last 3 days, the lowest price for a flight from Cardiff to Boston was £1,639 for a one-way ticket and £536 for a return.

  • Which aircraft models fly most regularly from Cardiff to Boston?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Cardiff to Boston?

    SkyTeam is the only airline alliance operating flights between Cardiff and Boston.

  • Which is the best airline for flights from Cardiff to Boston, KLM or Virgin Atlantic?

    The two airlines most popular with KAYAK users for flights from Cardiff to Boston are KLM and Virgin Atlantic. With an average price for the route of £517 and an overall rating of 7.8, KLM is the most popular choice. Virgin Atlantic is also a great choice for the route, with an average price of £703 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from Cardiff to Boston?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Cardiff to Boston.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Cardiff to Boston?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Boston from Cardiff is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Cardiff to Boston?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to Boston with an airline and back to Cardiff with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Cardiff to Boston?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Boston from Cardiff up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from Cardiff to Boston

 
See real verified KAYAK customer reviews for airlines flying from Cardiff to Boston. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Cardiff to Boston? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.8
KLMOverall score based on 1383 reviews
8.4Crew
7.1Entertainment
7.8Boarding
7.7Comfort
7.3Food
Airline reviews

The baggage drop-off in Stuttgart is bad: after online check-in you cannot use the automated baggage drop off as indicated on the website. You can use the terminals but have to cue to 1 of three open and slowly working counters to drop the bags. took about 45 minutes wait time.

6.0 GoodSimon, Jul 2025STR - AMS
Read more KLM reviews

The baggage drop-off in Stuttgart is bad: after online check-in you cannot use the automated baggage drop off as indicated on the website. You can use the terminals but have to cue to 1 of three open and slowly working counters to drop the bags. took about 45 minutes wait time.

Our first flight was delayed so we missed our connecting flight. However it was easy to book a later flight on their app.

Klm start boarding while somw air issue in the plan

The service was great. However the lounge only gets passing grade

I appreciate that KLM was proactive in informing me of the 2 hour delay which enabled me to replan my travel. It was a bit stressful not knowing whether my connection from Montreal to Ottawa was happening. But the ground and air crew did a good job at comforting and assuring me.

Legroom not all it could be, especially when the seat in front is reclined. Otherwise it was good, food and beverage were nice.

Overall very positive. Boarding was quick and organized. Cabin was clean and seats were reasonably comfortable. Cabin crew was excellent and the meals provided were also of good quality

This fight left ahead of time which meant it arrived early which was great. Staff were very professional, but as with all these Short hop Flights the food was a disappointing snack There was no entertainment on this flight, but I did not expect any

I flew premium economy and this was a good option. Although the seats didn’t recline much, I was able to get some sleep with my head propped against the window. The food was good and the entertainment was wonderful The staff were very attentive and professional

Great boarding, great short flight but no entertainment whatsoever and no wifi. Prepare to disembark by a staircase.

Great crew - old style upper class seats on the older fleet now feels dated

Premium economy more comfortable than economy, but not by much. Did was awful, do not try the omelette. Flight crew were helpful. Flight was delayed by over an hour. Overall but bad, arrived safely and thank God.

Food was excellent. Service was very good. Staff was very helpful to all passengers.

The crew was excellent as ever on Virgin. The special meal was poor unfortunately. More significantly when we arrived at Manchester Airport there was no air bridge provided and we had to exit the plane down a rickety stair case. This is unacceptable for a transatlantic flight. Whilst I understand that this is the airport’s fault at the end of the day the airline is responsible for our transportation and needs to do something.

Super friendly and helpful staff, from check-in desk to cabin crew.

Following a paid seat upgrade for enhanced comfort, I encountered an unacceptable odor in my assigned area. It took three hours for the crew to relocate me, and the replacement seat was unacceptably close to the lavatory, offering no improvement.

Good overall. Cannot fault the airlines. I have had better entertainment systems before ie ice in Emirates but it was not too bad. Food was decent and staff were friendly.

I did not fly by vergin atlantic from bangalore to vasco da gama

Your flight delayed at Heathrow n I almost missed my mother funeral.you idiots. I had to waste 10 hours in different airports. Thank your stars I'm not suing you.

Miami airport needs more thorough signage. It was a long walk from my transport point to the check in desk,

Everything you need to know for your flight from Cardiff to Boston

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