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BOS - CWL

Find cheap flights from Boston to Cardiff from $949

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Boston to Cardiff departing on 6/6. 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
0 bags
Fri 6/7
Fri 6/14

Search hundreds of travel sites at once for deals on flights to Cardiff

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Boston to Cardiff, 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 Boston to Cardiff, as well as popular online travel agencies
In the last 7 days travelers have searched 43,968,530 times on KAYAK, and here is why:

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Cheap flight deals from Boston to Cardiff (BOS-CWL)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Boston to Cardiff 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 and deals for you by selecting your travel dates.
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4:40 pm - 4:45 pmBOS-CWL
19h 05m1 stop
9:45 am - 4:35 pmCWL-BOS
11h 50m1 stop
$949KLM
Find Deal
Thu, Jun 6 - Thu, Jun 13
6:50 pm - 4:45 pmBOS-CWL
16h 55m1 stop
9:45 am - 4:35 pmCWL-BOS
11h 50m1 stop
$957KLM
Find Deal
Thu, Jun 6 - Wed, Jun 19
4:40 pm - 4:45 pmBOS-CWL
19h 05m1 stop
9:45 am - 6:40 pmCWL-BOS
13h 55m2 stops
$960KLM
Find Deal
Thu, Jun 6 - Thu, Jun 13
3:30 pm - 9:15 amBOS-CWL
36h 45m2 stops
9:45 am - 10:35 pmCWL-BOS
17h 50m2 stops
$964Virgin Atlantic
Find Deal
Thu, Jun 6 - Wed, Jun 19
5:05 pm - 4:45 pmBOS-CWL
42h 40m2 stops
9:45 am - 1:40 pmCWL-BOS
56h 55m2 stops
$1,084ITA Airways
Find Deal
Wed, Jul 10 - Wed, Jul 24
8:20 pm - 4:45 pmBOS-CWL
15h 25m1 stop
9:45 am - 6:30 pmCWL-BOS
13h 45m1 stop
$1,308Virgin Atlantic
Find Deal
Sun, May 26 - Fri, May 31
8:50 pm - 9:15 amBOS-CWL
31h 25m2 stops
5:15 pm - 10:00 pmCWL-BOS
33h 45m3 stops
$1,334
Find Deal
Thu, Jun 6 - Wed, Jun 19
7:00 pm - 9:15 amBOS-CWL
9h 15m1 stop
9:45 am - 4:35 pmCWL-BOS
11h 50m1 stop
$1,407Delta
Find Deal
Fri, Jul 19 - Thu, Jul 25
1:23 pm - 9:15 amBOS-CWL
14h 52m2 stops
9:45 am - 4:35 pmCWL-BOS
11h 50m1 stop
$1,412Delta
Find Deal
Fri, Jul 19 - Thu, Jul 25
7:15 pm - 9:15 amBOS-CWL
33h 00m3 stops
5:15 pm - 1:25 pmCWL-BOS
25h 10m3 stops
$1,435
Find Deal
Thu, Jun 6 - Wed, Jun 19

Flights from Boston to Cardiff - Travel Insights & Trends

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

What is the cheapest month to fly from Boston to Cardiff?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Boston to Cardiff, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from Boston to Cardiff is October, where tickets cost $698 on average. On the other hand, the most expensive months are December and June, where the average cost of tickets is $1,397 and $1,335 respectively.

Good to know

Low season

February

High season

September

Cheapest flight

$949
Best time to beat the crowds with an average 30% drop in price.
Most popular time to fly and prices are also 9% lower on average.
Flight from Boston to Cardiff

When to book flights from Boston to Cardiff

Are your dates flexible? Find out the best times to travel from Boston to Cardiff based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips 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 Boston to Cardiff

  • What is the cheapest flight from Boston to Cardiff?

    In the last 3 days, the lowest price for a flight from Boston to Cardiff was $949 for a round-trip ticket.

  • Do I need a passport to fly between Boston and Cardiff?

    Yes, you’ll need a passport to travel to Cardiff from Boston.

  • Which airports will I be using when flying from Boston to Cardiff?

    Boston airport is called Boston Logan Intl and the only airport in Cardiff is Cardiff Wales.

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

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

  • Which airline alliances offer flights from Boston to Cardiff?

    SkyTeam, and oneworld are the airline alliances operating flights between Boston and Cardiff, with SkyTeam being the most commonly used for this route.

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

    The two airlines most popular with KAYAK users for flights from Boston to Cardiff are Delta and KLM. With an average price for the route of $921 and an overall rating of 8.0, Delta is the most popular choice. KLM is also a great choice for the route, with an average price of $1,071 and an overall rating of 7.8.

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

    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 Boston to Cardiff.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Cardiff from Boston 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 Boston to Cardiff?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Cardiff with an airline and back to Boston with another airline. Booking your flights between Boston and CWL can sometimes prove cheaper using this method.

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

    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 Cardiff from Boston up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top airlines flying from Boston to Cardiff

 
See real verified KAYAK customer reviews for airlines flying from Boston to Cardiff. 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 Boston to Cardiff? 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.
8.0
DeltaOverall score based on 10789 reviews
8.6Crew
7.4Food
8.2Boarding
8.0Entertainment
7.9Comfort
Airline reviews

West Jet has a horrible boarding process and the seats have no cushion.

4.0 OkayDouglas, May 2024MSP - YEG
Read more about Delta reviews

West Jet has a horrible boarding process and the seats have no cushion.

Everything went smoothly. I didn’t like that when I booked in the main cabin my wife and I weren’t seated together. One would think when booking on an option that allows picking your seat. They would put you and your travel partner together. Had to call to get it sorted. They did fix.

The gate area was incredibly short staffed, with one representative manning 4-5 flights, which caused a 3 hr delay in boarding even though the plane was all ready to leave. Other flights also were delayed because of this. The flight crew was awesome and I feel bad for the only gate worker on call, but Delta needs to hire more employees.

Very frustrated with boarding gate crew. She announced the plane was small and they would be limiting us to one item to carry on. Not a problem for me as I understand the tiny planes have limited space!! Not the case here! It was a rather large plane and had plenty of room for bags! So because I don’t want to be one of “those people” who ignores the request to check a carry on I did so asking if I would be able to pick it up at the bottom of the ramp on arrival in Knoxville to which she responded “yes”! Then I watched as every other passenger held onto their 2 items and boarded!! Then when we arrived in Knoxville our 2 carry ons had been put with all the other luggage and we had to go to baggage pick up and wait for all the big checked bags to come off the carousel! So she lied!! Frustrating. Next time I won’t be so nice!

It was a good experience except when boarding a female flight attendant did not go out of her way to assist my teenage daughters in finding space for their carry-ons after their compartments were full.

On time departure, smooth trip, flight attendant told through passengers the gate we would arrive at and the gate our outbound flight was departing from. Early arrival

Checking in at the airport the agent only booked the first keg of my trip and had my checked luggage going to the airport with a layover! Never was issued a boarding pass for the second leg or received sticker fir my checked bag. All was well in the end! Delta agents helped to resolve the situation!!!

Delayed due to an ill passenger after loading. Not preventable on Delta's part. Was in first class. The seats are becoming worn and detaching from their velcro attachments. Only got snacks on flight. The attendant was not the friendliest.

They did a fine job. Can't wait to use Delta in the future.

Seats in first class on the E175 recline too far back. I was in 2A, and the man in 1A fully reclined almost the entire flight. It took 6-7 inches of space away from me and made it very difficult to work on my laptop.

The flight was again delayed for more then 2 hours with some lousy explanation regarding the reason of the delay. Although the flight was delayed for more than 2 hours, no refreshments were offered (according to EU regulations). Last 4 flights on KLM - always at least 2 hrs late. So be prepared that you cannot plan anything with KLM.

The flight was delayed for 2 hrs. Because they didn’t have a crew to fly. And it is not a first time for klm to do that. Last time they cancelled my filght and rebooked me 3 days later. Not reliable airline

Booked connecting flights with KlM. My serving flight was the furthest part of the airport. On arrival in Zurich. My two cases arrived but only one carry on belong to my son. His three suitcase didn't arrive. After enquiring we discovered they were still in Amsterdam. We landed at 11.12. We eventually left the airport just after one.

no issues at all... Kudos to the food. This time was really really good

The food was ok. The crew seemed like they were cranky. I had one guy get mad at me for passing in between the storage area to get to the other toilet. I can understand if it's not allowed but reprimanding me like I'm a student saying "This is the last time!" was not appropriate. During my meal time, there was a French family around me. No problems there but when we usually have meals, they are supposed to put their chair in the upright position. These people did not do it and the steward did not tell them to raise their seat in the upright position. However, I was told to do so! So, me and another person next to me had to eat with the monitor almost touching our faces. Furthermore, a lady in front of me was putting her feet up and preventing another elder passenger from putting her seat back. To make it worse, she was continuously hitting her back into her seat, shaking my monitor while I was watching a movie. A crew member did speak to her about it but then she accused me of pushing her seat forward! The crew member gave me a death stare and told me to stop pushing the seat forward. I did not even touch her seat at all, if I did, she would know it. Her boyfriend also stood up and tried to push her seat even further past the maximum decline to no avail. None of these people were reprimanded but the steward, some bald guy, was extremely friendly with them and did not even try to instruct them to do anything until it was time to land. I resisted the urge to really argue with them because I would have obviously been seen as the aggressor (I have no idea why). I hardly said anything on this flight except "more wine please" and "sorry" if I bumped into someone accidentally. Overall, it was an annoying flight and I had to resist the urge to yell at the steward and the people he was overly friendly with. The happiest moment of this flight was leaving it.

Overall a good experience. We were disappointed when we had to check our carry on due to the plane being full. KLM hadn’t notified us and we had valuable items in the carry on but they still made us check it. Some of the food was great and some was mediocre. Crew is really kind and funny.

The worst airline. Cancelled flight 30 min before boarding and rebooked on flight after 3 days.

I travel frequently. The flight was late again... KLM should really try and be on time

The plane was clean and the staff was friendly. Food and drinks as expected on international flights. The entertainment system was old style, with a pullout controller, and selections not as extensive as on other flights.

The boarding was one of the worst I’ve ever experienced. The fault lays on Ohare Airport and not so much the airline. The waiting area by the gate was the size to accommodate a regional flight for 20-30 people and right next to a busy walkway. When you cramped nearly 300 passengers into that space is was unbearable.

Boston - Cardiff Flights

Departure:

Boston (undefined)United States

Destination:

Cardiff (CWL)United Kingdom

Return flight deals:

Cardiff - Boston

Cabin classes:

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