Find cheap flights from Boston to Cardiff

BOS - CWL

Find cheap flights from Boston to Cardiff

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Round-trip
Economy
Boston (BOS)
Cardiff Cardiff Wales
Mon 11/29
Mon 12/6
Any month
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Good to know

Low season

October

High season

August

Average price round-trip

$804

Good deal round-trip

$857

Good deal one-way

$417
Best time to beat the crowds with an average 33% drop in price.
Most popular time to fly with an average 35% increase in price.
(avg. price over the last 2 weeks)
or less
or less

When to book flights from Boston to Cardiff

Estimated round-trip price
Average price per month

Top tips for finding a cheap flight

  • Looking for a cheap flight? 25% of our users found flights on this route for $417 or less one-way and $857 or less round-trip.
  • High season is considered to be July, August and September. The cheapest month to fly is October.

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Top airlines flying Boston Logan Intl to Cardiff Cardiff Wales

Scores according to KAYAK customer reviews

7.9
Delta
Overall score based on 30,118 reviews
8.1
Boarding
7.8
Comfort
8.5
Crew
7.8
Entertainment
7.5
Food
Airline reviews

"It was hard to hear the PA announcements for boarding. Maybe also post the info on the screen? Or allow the attendant to pull down his mask when speaking into the PA system?"

"Lots of delays. Armrests are not big enough for two people."

Pros: "Seat very v=comfotable"

Pros: "Plane was new and equipped"
Cons: "In first class we had beef jerky for breakfast"

Pros: "Sanitized, open middle seats, comfortable"
Cons: "We were stuck on the tarmac for 40+ minutes due to our gate being blocked by another plane. We almost missed our connection and had to run through the airport with our luggage and the staff at our second gate yelling “hurry up” at us like it was our fault."

Pros: "Friendly crew"

Cons: "None"

Pros: "Great crew."

Pros: "Everything! the best part was that the they kept the middle seat empty!"
Cons: "nothing"

Pros: "Don’t go overboard"
Cons: "Cleaner"

Pros: "Good"
Cons: "Good for now"

Cons: "Top carrier"

Pros: "Well organized and easy to check in."
Cons: "No"

Cons: "Nothing, really. Airlines unfortunately can’t make people patient or polite, & I can’t afford a private jet, so I’ll have to settle for an eye roll or twelve."

Pros: "Everything"
Cons: "Nothing"

Cons: "The inoperative TV screens should be repaired."

Pros: "Was boarded promptly"

Cons: "During this trip all my flights got delayed and I was told that I could not get a hotel room and had to pay for myself."

Pros: "Entertainment. Flight attendants. Food"
Cons: "PROBLEM WITH LOCATING BAGGAGE CAROUSEL. GIVEN WRKNG LICATION ."

Pros: "Crew was amazing. Pilots were attentive to kids and answered questions. Everyone was very welcoming and helpful."
Cons: "They didn't have some of their food options (and they apologized for that up front), but then ran out of the others by the time they got half way through the plane. That was tough for a five hour flight that went through dinner time."

Pros: "Fine crew. Fine entertainment."
Cons: "Clumsy boarding process. After a 2.5 hour delay on tarmac before takeoff there was almost no food on board for a 6-hour flight"

Cons: "The flight attendants were quick with the pick up of drinks. I had only been served my drink for five minutes and they were already coming around to pick up trash."

Pros: "Ryan was great! Very nice and professional, would love to see him on a future flight."

Pros: "Smooth flights and in time. Everyone is so nice. True professionals"

Pros: "Crew was friendly"
Cons: "An hour and a half late, terrible communication about scheduling"

Pros: "I was in Comfort+ so there was a bit more leg room than standard economy"
Cons: "Even with Comfort+ things are tight."

Pros: "Good flight in air"

Cons: "Even the baggage was quick (highly unusual for Columbus, Ohio)! Everything went smoothly."

Pros: "The flight attendants were excellent. The plane was comfortable, as usual. The choice of snacks is great!"
Cons: "Actually, everything was fine. No need for improvement .... even the airfare was great!"

Cons: "Delays due to Democrats not making deal"

Pros: "Good service this morning"
Cons: "All good"

Cons: "they let someone get off the plane and it delayed the flight an hour and a half which caused me to miss my connecting flight. I now have to sit for a 5 hour layover"

Pros: "The selection of movies was great."
Cons: "The food. No herbal or decaf tea. No decaf coffee. The regular coffee and regular tea was awful; I like strong coffee and tea but on the plane it was terrible. The was not a vegan option for dinner. I thought the pilot announced complimentary beverages; soft drinks, coffee, tea & alcohol. Perhaps I was mistaken or maybe he was. I like the seats (reclining back with the seat bottom moving forward) except the seat bottom is entirely too hard and was bad for my back. The hot towels are a welcome touch. The ride was smooth, the pilots did a very good job."

Pros: "Everything went great. Flight left a little late but was fine and only arrived a little late. I like the side wings on head rests really help."
Cons: "Seats are always hard on long flights."

Cons: "Delays, delays, delays... first class ticket from BOS to MSP got me a 6 hour delay and a middle seat in econ main cabin at the back of the plane. Delta you suck!"

Pros: "Got to London on-time (early, actually) and safely. The in flight meal was okay. The leg room in comfort plus was great, the mobile app was awesome, and the staff (check-in, gate, cabin and flight deck) were professional and friendly all around."
Cons: "The leg room was great, but as a broad-shouldered guy, the width of the seat was miserable. Unfortunately, the Delta 767 doesn't offer any upgrade for a wider seat beyond Delta One, and my employer won't spring for that. Too bad there isn't a premium economy option. Also, the entertainment unit in the seat next to mine malfunctioned, which you wouldn't think would impact me that much except that because it was "seeing" touches randomly throughout the flight, the screen would turn on, off, brighter, dimmer, play random stuff, and just generally be as annoying as possible to everyone nearby throughout an overnight flight."

Cons: "Flight delayed by 2 hours- was just sitting in the plane for couple hours before it took away"

Pros: "Generally, Delta is cleaner, their terminals are much nicer, and the experience is better than one with American and United. I wish they had more direct flights to my normal destinations--I'd fly with them more!"
Cons: "Someone unloaded a lot of crumbs on my tray table and they all got smooshed on the back of the seat between the tray table and chair. It was pretty nasty. (The tray table was clean, the back of the seat wasn't. Please be nasty.)"

Cons: "Tray table was broken, I was downgraded from Comfort plus to main cabin after a plane swap with no mention by anyone and no compensation. Flight was delayed 45 minutes because a flight attendant was running late and then to top it off, at the end of. The flight the attendants blocked anyone fromaim cabin from leaving until all of first class had departed, even when no one was coming they still Blocked it off. This is a practice I have never seen on delta and haven't seen in aviation in almost 20 years in the US"

Pros: "Leg room and seats are very tight and I'm a small person."
Cons: "Coach class is very crowded."

Pros: "Cabin crew and captain were great."
Cons: "Don't like how you don't get your seat assignment until you get to the gate. I was given the window seat in the very last row for a 6 hour flight, quite uncomfortable. I could've booked another airline for a similar price and picked the seat i wanted at booking. They ran out of food choices by the time they got to the last row, so we were given whatever was left. Delayed because one of the bathroom doors wasn't working, 30 min later still wasn't fixed and ultimately they decided to go without it."

Pros: "Staff smooth flight great landing and free movies"
Cons: "Everything was perfect"

Pros: "Your entertainment system is fabulous!"
Cons: "We purchased a direct flight from Boston to Tampa. We paid extra for the convenience of a direct flight Our flight was changed without notification to a connecting flight that was leaving 10 minutes earlier and arriving 2 hours later. Due to malfunction with the kiosk and not a sufficient amount of agents at check in, we missed our flight by 4 minutes. The gate agent seemed to enjoy telling us, with our 10 month old baby, that we were too late. Our baggage, including car seat, had been loaded on the plane. We were reassigned to a flight the following morning. We missed a full day with family, had to travel back home without a car seat and return to the airport the following day. I was shocked and disappointed that not single Delta agent was accommodating or remotely helpful while we were at the airport. I've never had a problem with Delta before. We travel on regularly and would like to continue using Delta. I would like a voucher for my next Delta trip."

Pros: "gate staff were great"
Cons: "plane cabin staff looked overworked"

Cons: "My wife was told she could not board our flight from Boston to Paris because her passport was expired, even though it was not expired. We were told that in Europe passports cannot expire within 3 months of your departure. However, Delta never let us know about this rule until we literally were boarding the plane. How they could not make us aware of this until we were boarding the airplane is unbelievable and unacceptable. This has ruined our vacation which has been in planning for the last six months."

Pros: "Complimentary snack mini-meal. Early departure and arrival. Availability of extra seat and elbow room. Free movies."
Cons: "Entertainment screen would not tilt to comfortable angle when passenger in front of me reclined his seat, and the screen/system stopped functioning properly near end of flight."

Cons: "We sat on-board the aircraft, at the gate, for almost 2 hours due to a weather delay. During this time, we were not offered refreshments, nor were we offered any type of "compensatory benefit" for our delay (e.g., free Wi-Fi, vouchers good toward a future flight (a $30 voucher per passenger would seem appropriate), additional SkyMiles (3000-5000 SkyMiles would seem appropriate), etc.)."

Pros: "The only positive of this leg is that it was less infuriating than the flight from RDU to Boston"
Cons: "Delta's partnership with Go Jet seriously compromises the legacy carrier's reputation. I am a Delta fan - although flexible enough to use other choices when necessary. I will no longer fly a Go Jet operated leg when other choices are available. For my trips to Boston, that means Jet Blue. Sorry Delta. I'll see you back on a true Delta route."

Pros: "Everything was just right"

"Never booked this flight"

Pros: "The best airline ever! Super friendly crew and staff, great customer service and nice planes. Love KLM!"

Cons: "Klm is the best, even on a 40min they served small breakfast."

Cons: "The only complaint I had was that it was very warm on the flight (and I usually get cold on flights), and in the seats we had there weren't fans above the seats. A few rows up they had fans, so apparently you have to pay extra for air... This wouldn't be a big deal on a short domestic flight, but for an international flight it was a long time to be uncomfortable!"

Pros: "Very friendly and responsive crew. Announcements from the Capitan and chief of flight attendants are very informative and comforting. Seat positions: very good leg room (even in economy)!"
Cons: "Newer airplane, as 747s are kind of outdated now, especially for long distance flights. But overall had good experience with KLM"

Pros: "Crew good and seat OK but not exceptional for business class"
Cons: "Food was average - main course could have been better. Range of movies ok but not great"

Cons: "Fix the damn KIOSKS at Vienna!"

Pros: "Seat was good"
Cons: "Depart on time (1 hour late), hostess put a laptop in the overhead, which fell out and hit me when the bin was opened"

Pros: "Crew was friendly"
Cons: "Passenger who needed wheelchair assistance it took KLM 50 minutes to get him off plane which delayed our boarding. KLM not prepared to handle passengers with needs"

Pros: "Nice attention and good food. Plane and seats are confortable"

Pros: "Crew was great and professional."
Cons: "Entertainment controls were outdated and confusing to operate. There were no charging ports."

Cons: "Flight cancelled"

Pros: "KLM was a great experience compared to Airitalia. The food was good, the flight attendants were very helpful."

Pros: "Crew was amazing, seats were comfortable with enough leg space even without choosing extra space seats. It was my childhood dream come true to fly with KLM. It was really an exciting trip for me, just that it was short."
Cons: "Well, for me everything was on point. Those who have never travelled with KLM, I would encourage them to do so and I’m sure they will not regret."

Cons: "I called for a crew member 5 times and waited 25 minutes for anyone to help me with just some water. I had to get up and go to the very back of the plane to ask for some water. The plane was hot and no air to be found. This was all after we had to get back off the plane before takeoff. It was terrib"

Pros: "yes"
Cons: "not really"

Cons: "Turn the lights on early making it hard to sleep"

Pros: "Very personable staff. Food acceptable for airline fare. Ticket price was outstanding."
Cons: "Paid for extra legroom, but very narrow seats not comfortable. Very difficult to sleep. Old plane--could not hear movies and unclear screen. Music sounded OK and choice was good."

Pros: "Efficient boarding system, clearly signposted. Professional staff"

Cons: "Services was pretty weird .. Perse or crew Leader was ok But the assistent Young one was Really bad.. aptitud and not friendly at all."

Pros: "Efficient crew"
Cons: "Long, slow line at check in. Not many new movies or tv shows"

Cons: "KLM lost my luggage during the layover. My luggage didn't arrive even after the next flight to Prague. Customer service wouldn't give me any idea what flight my luggage would arrive on, nor would they tell me what time my luggage might be delivered to me."

Pros: "The entertainment options were good."

Pros: "The cabin crew was so kind, efficient, and attentive. All meals and snacks were delicious."

Pros: "Everything excellent. Comfortable seats in business."

Pros: "Fabulous trip with friendly, helpful staff"
Cons: "Nothing"

Cons: "I can't take the flight because i'm not Chilean and I don't have a reembolse or other flight ,... nothing . Finally I take other flight with other company"

Pros: "Short flight with good communication."
Cons: "Nil to complain."

Cons: "The 767 is configured oddly and th business class seats are so narrow it feel like you are sleeping in a coffin"

Pros: "The flight crew was nice. Plane departed/arrived on time."
Cons: "I paid €60 extra to sit in the emergency door seat to get more leg room but once.i was in the plane learned for more leg room I accepted a smaller seat next to a bathroom and no entertainment. I could not store my belongings near me. No power outlet to charge my devices for my own entertainment on a 7 hour flight. Dealing with constant traffic for the bathroom. I sat in the middle seat between two hours other men. It was a constant struggle arm space. After 7hours in the air I could not wait to get off the plane. If I didn't actually pay an extra €60 for the seat I may not feel bad but I feel like I might have been better off without paying for the "upgrade""

Pros: "The staff the facilities the food all ******. Will definetly look forward to choose both delta and KLM"

Cons: "Crowded seating, 20-year old video system, headphones that did not match the two-jack system, lackluster service in flight. Generally my experience with KLM has been good, but this was well below average."

Pros: "Helpful and smiling cabin crew."

Pros: "The cabin crew were pretty good. That's about all that was good."
Cons: "I paid almost $400 for upgraded seats. When I got to the airport-- no seats-- both ways!! i didn't even have regular seat assignments. I had to choose from the last few seats available. The ticket agent, the gate agent and the cabin crew all did nothing to make up for the fact that their system screwed up and stuck me in a cramped coach seat in the back of the plane for 11 hours-- TWICE! Beyond that, KLM must have one of the oldest fleets in the sky. Both ways LAX->AMS->LAX, I was on a 30-35 year old 747 with no wifi, no power and a ten-year-old entertainment system. Never again."

Cons: "I don’t like the limited choice of drinks on these short KLM flights."

Cons: "It was announced I can choose between fish and chicken meal but when I requested for fish meal, I was told it’s finished. My seat was 21, and it surprised me. If something can be changed about that then your services would be much appreciated. Thank you."

Cons: "No proper info regarding cancellation. Staff was unfriendly and abruptly responded to passengers."

Pros: "Short-hop flight, fit for purpose."

Pros: "Good multi media access and content"

Cons: "Two hours delay in the start."

Pros: "I really like the spaciousness, the plug ins and general service"
Cons: "I have a dairy allergy but had no option to prepurchase a dairy free meal. It made for a very unenjoyable flight as I couldn't eat anything they had. What was worse was after I told them of my situation they said they understood and had a meal that would do but there was cheese, yogurt, milk chocolate, etc."

Pros: "Great crew service. Among the best ever."

Pros: "great choice of entertainment content, friendly crew"

Pros: "Staff at Schipol airport were lovely and very helpful. Cabin crew were friendly and efficient. On board snack was nice."
Cons: "Elbow room is a little bit awkward and I didn't get to sit next to my fiance WE will still definitely recommend KLM though!"

Cons: "There weren't too many options. The movie selection was very limited and the tv show were over 20 years old in some cases"

Pros: "Staff superb. They even surprised us with an exit row and a gift for my partners birthday! Amazing. Samantha and Dennis also took time to come and personally wish him a happy birthday. A lovely touch. This airline runs like clockwork. They are just great. The sandwich and stoop waffle are nice too."
Cons: "There is a bus to the plane, so that takes a bit of extra time but they are very well organized."

Pros: "Overall, my trip to Cardiff via Amsterdam was smooth and delightful. I've flown a few short trips this summer and I was pleasantly surprised to find KLM still offered complimentary snacks. What a refreshing change!"
Cons: "There was no entertainment which is why I assigned that category only one star. The boarding process in Amsterdam could have been a bit smoother. Announcements were no clear."

Cons: "Did not get the luggage from connecting flight from Amsterdan to Basel"

Cons: "I slept didn't have snack offered and no entertainment"

Cons: "I missed my flight because of MU"

Read more about Delta
COVID-19 information

Safety measures for airlines flying from Boston to Cardiff

Airlines flying from Boston to Cardiff have enacted additional safety measures and adjusted policies to better accommodate travelers. Policies vary by airline.

Heightened sanitation

Daily cleaning, installation of cabin HEPA filters on flights from Boston to Cardiff

Mandatory masks

Masks required on board, masks provided on flights from Boston to Cardiff

Social distancing seating

Middle seats unavailable to book on flights from Boston to Cardiff

Pre-flight testing

Testing for antibodies, testing for symptoms for flights from Boston to Cardiff

Book cheap flights from Boston to Cardiff

Recent round-trip flight deals

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