CWL - BOS

£523 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 26/11. 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, 0 bags

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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Flight Deals

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

Wed, 26 Nov - Wed, 3 Dec
KLM Logo
10:20 - 18:55CWL-BOS
13h 35m1 stop
KLM Logo
20:50 - 16:55BOS-CWL
15h 05m1 stop
£523KLM
Find Deal
Wed, 26 Nov - Wed, 3 Dec
KLM Logo
10:20 - 22:24CWL-BOS
17h 04m2 stops
KLM Logo
20:50 - 16:55BOS-CWL
15h 05m1 stop
£530KLM
Find Deal
Wed, 26 Nov - Wed, 3 Dec
Delta Logo
10:20 - 22:24CWL-BOS
17h 04m2 stops
Delta Logo
13:05 - 09:50BOS-CWL
15h 45m2 stops
£550Delta
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Sun, 14 Dec - Sun, 21 Dec
Multiple Airlines Logo
10:20 - 13:20CWL-BOS
32h 00m1 stop
Multiple Airlines Logo
19:05 - 09:50BOS-CWL
9h 45m1 stop
£711Multiple Airlines
Find Deal
Sun, 14 Dec - Sun, 21 Dec
Virgin Atlantic Logo
10:20 - 23:55CWL-BOS
42h 35m2 stops
Virgin Atlantic Logo
19:10 - 16:45BOS-CWL
16h 35m1 stop
£783Virgin Atlantic
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Thu, 26 Mar - Mon, 30 Mar
Delta Logo
10:20 - 14:20CWL-BOS
32h 00m1 stop
Delta Logo
16:45 - 09:15BOS-CWL
11h 30m1 stop
£792Delta
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Thu, 26 Mar - Mon, 30 Mar
Delta Logo
10:20 - 07:24CWL-BOS
25h 04m2 stops
Delta Logo
17:00 - 16:45BOS-CWL
18h 45m2 stops
£796Delta
Find Deal
Thu, 26 Mar - Mon, 30 Mar
Delta Logo
10:20 - 14:20CWL-BOS
32h 00m1 stop
Delta Logo
17:00 - 16:45BOS-CWL
18h 45m2 stops
£798Delta
Find Deal
Thu, 26 Mar - Mon, 30 Mar
Air France Logo
10:20 - 14:20CWL-BOS
32h 00m1 stop
Air France Logo
20:20 - 16:45BOS-CWL
15h 25m1 stop
£837Air France
Find Deal
Wed, 26 Nov - Wed, 3 Dec
Multiple Airlines Logo
15:55 - 22:37CWL-BOS
35h 42m3 stops
Multiple Airlines Logo
18:05 - 09:50BOS-CWL
34h 45m3 stops
£867Multiple Airlines
Find Deal

Everything you should know

Top airlines
KLM
Cheapest • from £523 (return)
KLM
Best reviews • 7.7 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Cheapest return fare
£523
KLM
Wed 26/11Wed 3/12
CWL - BOS • 1 stop
Cheapest one-way flight
£1,880
British Airways
Mon 1/12
CWL - BOS • 2 stops
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KAYAK searches hundreds of sites at once to find you the best travel deals.
We hope you love your trip to Boston!
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 KLM (£523) and Delta (£550).

Which airlines fly direct between Cardiff and Boston?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for round-trip flights from Cardiff to Boston.

There are 2 airlines that fly direct from Cardiff to Boston. They are KLM and Virgin Atlantic. The cheapest airline for this route is KLM, with the best return deal found costing £452. On average, the best prices for this route can be found at KLM.

Good to know - Cheap tickets from Cardiff to Boston

Low seasonJune
Cheapest flight£523
Best time to beat the crowds (23% less expensive on average)
Most popular time to fly (41% more expensive 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 £1,880 for a one-way ticket and £523 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 £520 and an overall rating of 7.7, KLM is the most popular choice. Virgin Atlantic is also a great choice for the route, with an average price of £742 and an overall rating of 7.5.

  • 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.
7.7
KLMOverall score based on 1406 reviews
7.1Entertainment
7.8Boarding
7.3Food
8.4Crew
7.7Comfort
Airline reviews

Flight was ok but lack of communication cost me to literally beg to be put on another flight as connecting flight had departed

2.0 MediocreAbisola, Oct 2025CDG - AMS
Read more KLM reviews

Flight was ok but lack of communication cost me to literally beg to be put on another flight as connecting flight had departed

They forgot to serve food and the crew was very unfriendly. Never experienced such a bad KLM flight. Usually fly from Toronto. New York was different.

Over 1 Hr delay. No APU so no AC on ground. Plane was hot during boarding and then they closed the doors over 20 minutes before engine start so interior of plane was steamy hot and stuffy. Could have been helped by opening doors until ready to depart.

First of all we couldn’t check in online, then we learn at the airport we were on stand by for KLM’s mistake of overbooking. The seats were not comfy at all. Our luggage got lost.

Short flight so it was okay. Nice crew, all very pleasant and professional. We were near the back in row 27 so just as we got our drinks, we started our descent so had to drink very quickly!

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.

Great staff great experience, made a 2 hour delay very bearable

Great staff, great experience, made a 2 hour delay very bearable

Food was the worst I’ve had on a VA flight. Normally it’s a lot better

I was my pleasure to fly virgin on my birthday for my first solo trip ever 🫶🏼

These are one of the older seat arrangements facing away from the windows! Not particularly convenient sets. No storage spaces. NO COAT HANGING HOOKS. Inconvenient business class seat compared to any other airlines of similar class. Staff are excellent! Extremely professional, friendly. Food is good too.

Overall, flight was excellent but check in was very slow for Premium Economy. Economy queue was shorter but we weren't allowed to use it.

The staff was not very polite but the flight was very very nice and comfortable and the entertainment was great

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.

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

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