CWL - BOS

£662 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 9/6. 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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Everything you should know

Cheapest return fare
£662
Multiple Airlines
Tue 9/6Tue 16/6
CWL - BOS • 2 stops
Direct flights
Not available
There are currently no direct flights between Cardiff and Boston. You’ll need at least 1 connection.
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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

Tue, 9 Jun - Tue, 16 Jun
Multiple Airlines Logo
23:15 - 09:05
CWL
-
BOS
38h 50m
2 stops
Multiple Airlines Logo
23:35 - 23:05
BOS
-
CWL
18h 30m
1 stop
£662Multiple Airlines
Tue, 9 Jun - Tue, 16 Jun
Multiple Airlines Logo
11:35 - 09:45
CWL
-
BOS
27h 10m
2 stops
Multiple Airlines Logo
18:30 - 10:15
BOS
-
CWL
34h 45m
2 stops
£688Multiple Airlines
Tue, 9 Jun - Tue, 16 Jun
Multiple Airlines Logo
23:15 - 22:39
CWL
-
BOS
28h 24m
3 stops
Multiple Airlines Logo
18:30 - 10:15
BOS
-
CWL
34h 45m
2 stops
£690Multiple Airlines
Tue, 9 Jun - Tue, 16 Jun
Multiple Airlines Logo
23:15 - 22:39
CWL
-
BOS
28h 24m
3 stops
Multiple Airlines Logo
18:30 - 10:15
BOS
-
CWL
34h 45m
3 stops
£696Multiple Airlines
Thu, 11 Jun - Thu, 18 Jun
Multiple Airlines Logo
22:50 - 09:45
CWL
-
BOS
39h 55m
3 stops
Multiple Airlines Logo
10:05 - 22:20
BOS
-
CWL
31h 15m
2 stops
£722Multiple Airlines
Thu, 11 Jun - Thu, 18 Jun
Multiple Airlines Logo
22:50 - 20:55
CWL
-
BOS
27h 05m
3 stops
Multiple Airlines Logo
05:45 - 22:20
BOS
-
CWL
35h 35m
3 stops
£759Multiple Airlines
Thu, 11 Jun - Thu, 18 Jun
Multiple Airlines Logo
11:35 - 09:45
CWL
-
BOS
27h 10m
2 stops
Multiple Airlines Logo
19:00 - 10:15
BOS
-
CWL
34h 15m
2 stops
£781Multiple Airlines
Tue, 9 Jun - Tue, 16 Jun
Multiple Airlines Logo
17:15 - 18:30
CWL
-
BOS
30h 15m
1 stop
Multiple Airlines Logo
16:40 - 09:15
BOS
-
CWL
11h 35m
1 stop
£797Multiple Airlines
Thu, 11 Jun - Thu, 18 Jun
Multiple Airlines Logo
09:45 - 18:30
CWL
-
BOS
13h 45m
1 stop
Multiple Airlines Logo
16:40 - 16:45
BOS
-
CWL
19h 05m
1 stop
£870Multiple Airlines
Thu, 28 May - Mon, 1 Jun
WestJet Logo
11:35 - 17:40
CWL
-
BOS
35h 05m
2 stops
WestJet Logo
18:30 - 10:15
BOS
-
CWL
58h 45m
2 stops
£1,138WestJet
Booking Insights

Good to know - Cheap tickets from Cardiff to Boston

Cheapest flight£662
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 £662 for a return ticket.

  • 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 £498 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 £483 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 1512 reviews
7.7Comfort
8.4Crew
7.3Food
7.8Boarding
7.1Entertainment
Airline reviews

As per usual when you Hit the UK it's a slow process through customs Not as efficient at Thailand for sure

10.0 ExcellentDiane, Apr 2026
AMS - HUY
Read more KLM reviews

As per usual when you Hit the UK it's a slow process through customs Not as efficient at Thailand for sure

It was really nice journey i personally recommend klm flight

Crew is not the cheerful type. very slow meal service (this is their style as have flown this many times)

Empty seats next to me - wish it had been for a longer flight!!

I’m grateful for the KLM Air France shuttle bus service to Ottawa. However due to construction and other issues related to the chaotic Uber pickup system at YUL, it’s a challenge to find the Kelios bus service to Ottawa. The signs are not clear or even available. No staff to guide passengers. It’s a stressful experience.

Terrible last row seats many seats available but no offer to move to better seat

Delay and had to run between flight to get my connection due to this delay but besides that the overall experience was ok. I arrived with just an hour of delay.

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.

Seating and zone. The minor I went with didn’t even seat close to me

My seat 3G did not go down fully and the buttons were not working properly

Food has been disappointing in both legs of flight to india

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

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

Information on your arrival and departure airports