£170 Find Cheap Flights from Boston to the United Kingdom – Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Boston to the United Kingdom departing on 18/10. 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

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Cheap Flights from Boston to the United Kingdom

Cheapest return prices found by our users on KAYAK in the last 72 hours
London
London1 stop£498
Manchester
Manchester1 stop£593
Edinburgh
Edinburgh1 stop£381
Birmingham
Birmingham2 stops£485
Belfast
Belfast2 stops£538
Bristol
Bristol1 stop£487
Liverpool
Liverpool2 stops£476
Aberdeen
Aberdeen2 stops£542
Leeds
Leeds2 stops£499
Inverness
Inverness1 stop£511
Newquay
Newquay1 stop£591
Cardiff
Cardiff2 stops£512
Kirkwall
Kirkwall2 stops£1,035
London
London1 stop£498
Manchester
Manchester1 stop£593
Edinburgh
Edinburgh1 stop£381
Birmingham
Birmingham2 stops£485
Belfast
Belfast2 stops£538
Bristol
Bristol1 stop£487
Liverpool
Liverpool2 stops£476
Aberdeen
Aberdeen2 stops£542
Leeds
Leeds2 stops£499
Inverness
Inverness1 stop£511
Newquay
Newquay1 stop£591
Cardiff
Cardiff2 stops£512
Kirkwall
Kirkwall2 stops£1,035

Book Cheap Boston to the United Kingdom Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Boston to the United Kingdom 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 Boston to the United Kingdom

Fri, 23 Oct - Sun, 1 Nov
Multiple Airlines Logo
20:50 - 11:50
BOS
-
EDI
10h 00m
1 stop
Multiple Airlines Logo
07:45 - 17:50
EDI
-
BOS
15h 05m
1 stop
£381Multiple Airlines
Wed, 11 Nov - Sun, 22 Nov
Multiple Airlines Logo
19:50 - 11:45
BOS
-
EDI
10h 55m
1 stop
Multiple Airlines Logo
07:45 - 17:50
EDI
-
BOS
15h 05m
1 stop
£385Multiple Airlines
Wed, 18 Nov - Sun, 22 Nov
Multiple Airlines Logo
19:50 - 11:45
BOS
-
EDI
10h 55m
1 stop
Multiple Airlines Logo
07:45 - 17:50
EDI
-
BOS
15h 05m
1 stop
£387Multiple Airlines
Wed, 14 Oct - Wed, 21 Oct
Multiple Airlines Logo
23:00 - 00:20
BOS
-
EDI
20h 20m
2 stops
Multiple Airlines Logo
17:50 - 21:05
EDI
-
BOS
32h 15m
1 stop
£389Multiple Airlines
Wed, 5 Aug - Wed, 19 Aug
Icelandair Logo
20:50 - 14:40
BOS
-
LGW
12h 50m
1 stop
Icelandair Logo
15:40 - 18:50
LGW
-
BOS
32h 10m
1 stop
£498Icelandair
Wed, 16 Sep - Sun, 4 Oct
Scandinavian Airlines Logo
17:40 - 17:40
BOS
-
LHR
19h 00m
1 stop
Scandinavian Airlines Logo
21:05 - 15:35
LHR
-
BOS
23h 30m
2 stops
£498Scandinavian Airlines
Tue, 1 Sep - Sat, 19 Sep
Icelandair Logo
20:50 - 11:55
BOS
-
LHR
10h 05m
1 stop
Icelandair Logo
13:05 - 18:50
LHR
-
BOS
10h 45m
1 stop
£499Icelandair
Tue, 8 Sep - Wed, 16 Sep
Scandinavian Airlines Logo
17:40 - 09:20
BOS
-
LHR
10h 40m
1 stop
Scandinavian Airlines Logo
19:50 - 15:35
LHR
-
BOS
24h 45m
2 stops
£499Scandinavian Airlines
Tue, 8 Sep - Tue, 22 Sep
British Airways Logo
17:40 - 09:00
BOS
-
LCY
10h 20m
1 stop
British Airways Logo
09:35 - 16:10
LCY
-
BOS
11h 35m
1 stop
£562British Airways
Fri, 21 Aug - Thu, 27 Aug
Aer Lingus Logo
17:25 - 08:40
BOS
-
MAN
10h 15m
1 stop
Aer Lingus Logo
11:40 - 18:50
MAN
-
BOS
12h 10m
1 stop
£595Aer Lingus
Booking Insights

KAYAK's insights & trends for Boston to the United Kingdom flights

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

What is the cheapest Boston to the United Kingdom flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to the United Kingdom from Boston found in the last 5 days was to London, at £483 return. The most popular route is from Boston (BOS) to London Heathrow Airport (LHR), and the cheapest return airline ticket found on this route in the last 5 days was £483.

What is the cheapest time of day to fly to the United Kingdom?

The average price for all round-trip flights from Boston to the United Kingdom depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to the United Kingdom is generally in the evening, when retur flights cost £402 on average. Morning departures are around 41% more expensive than evening flights, on average. The most expensive time of day to fly to the United Kingdom is generally in the morning, which is peak travel time and where the average cost of a ticket is £566.

Can I save money by flying with a stopover from Boston to the United Kingdom?

The average return price for all direct flights, flights with one stopover, and flights with two stopovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a stopover may cost you more time, but you can also save money on the route, with a 2 stops stopover the cheapest option at £595 on average.

What is the cheapest month to fly from Boston to the United Kingdom?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Boston to the United Kingdom, 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 the United Kingdom is January, when tickets cost £410 (return) on average. On the other hand, the most expensive months are June and July, when the average cost of return tickets is £775 and £656 respectively.

What’s the cheapest day of the week to fly from Boston to United Kingdom?

The average price of all round-trip flights from Boston to the United Kingdom clicked on KAYAK for each day over the last 12 months.

If you are looking for a flight deal from Boston to United Kingdom, look for departures on Mondays and avoid leaving on a Saturday, as it's usually the priciest day. When flying back from United Kingdom, Tuesday is the cheapest day to fly and Sunday is the most expensive.

How far in advance should I book a flight from Boston to the United Kingdom?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Boston to the United Kingdom, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below-average price on the flight from Boston to the United Kingdom, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 7 weeks before departure.

Good to know - Cheap tickets from Boston to the United Kingdom

Low season

January

Cheapest flight

£170
Best time to beat the crowds (26% less expensive on average)
Most popular time to fly and prices are also 6% lower on average.
Flight from Boston to Edinburgh

Flights from Boston to the United Kingdom: the best tips from KAYAK users

Insights shared by verified travellers who flew the route from Boston to the United Kingdom 
alyciaFlew with American Airlines
BOS
-
LHR
Mar 2026
Long walk between terminals in boston Don't cut connections close
MarilynFlew with British Airways
BOS
-
LHR
Feb 2026
Meeting a friend at Heathrow was difficult as there are many terminals so far apart. Access to the train was great and an easy way to get to the downtown area.
Verified travelerFlew with British Airways
BOS
-
LHR
Jan 2024
Leave plenty of time if connecting in London as most connecting flights are in a different terminal which requires a bus or tram ride. Also if you’re not at the gate 30 minutes ahead they will not let you on the plane. Apparently this is a Heathrow not airline rule.

FAQs - booking United Kingdom flights

  • How does KAYAK find such low prices on flights from Boston to the United Kingdom?

    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 the United Kingdom.

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

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

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

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

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

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

Top tips for finding a cheap flight from Boston to the United Kingdom

  • Looking for a cheap flight from Boston to the United Kingdom? 25% of our users found tickets from Boston to the United Kingdom for the following prices or less: Edinburgh £345 one-way - £592 round-trip; London £264 one-way - £616 round-trip

Reviews of the top 5 airlines flying from Boston to the United Kingdom

 
Need help choosing which airline to fly with from Boston to the United Kingdom? 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.
7.5
Air FranceOverall score based on 1627 reviews
7.4Comfort
7.5Boarding
7.0Food
8.2Crew
7.0Entertainment
Airline reviews

Seats! The eternal problem in economy. They are like stones!!

6.0 GoodJuan G, Jun 2026
IAD - CDG
Read more Air France reviews

Seats! The eternal problem in economy. They are like stones!!

Everything is good except the seats are tightened no rooms for the legs,

The plane's pilots, including the captain himself, thanked me for the flight. I know it's just marketing, but it was really nice to see these people. It's a great idea. Airplane food is never "good," but the entire crew and flight organization were top-notch. I really liked Delta, and I think I've traveled all over the world, and that was something new for me. Maybe even the old planes, the B767, but next time I have a choice, Delta will be my first choice. Thank you, a satisfied passenger :)

It was a great experience. The only thing I would have changed was that the bathrooms were never cleaned and they got very dirty.

It was an OK flight with below mediocre service by their flight attendants

Wasted a lot of time trying to find the CDG lounge - it was not next to the connecting flight gate like the Air France staff said.

The only reason the overall rating wasn't "excellent" was due to problems in claiming luggage. The bags are delivered to the main area (Cinta 35) for domestic passengers, but to a DIFFERENT ROOM for international arrivees. After waiting 30 minutes, someone (who didn't appear to be from Air France or the airport) told us to go to another area. There we found our bags, which appeared to have been awaiting us for a while. We had to go through a bag check before leaving the airport. If we had been alerted to this possibility, or better yet, been to go directly to Cinta 34, we could have eliminated quite a bit of waiting.

I did not get my baggage at my final destination..poor coordination with connecting flights with partner airlines (Saudi airways). Also the food was very mediocre.

Not great , just ok . I expected better food but it did not deliver . Flight staff was ok . The guy at the drop off bag counter was the only saving grace in this whole trip . He was pleasant, friendly and very helpful . You couldn’t ask for a better assistance from him .

Food could have been better especially the breakfast. Overall it was a good flight

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

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

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

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 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.

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.

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

Flight took off an hour late. Had to stay on the tarmac for half an hour after landing. Both annoying.

The crew was very good. However, the equipment was a bit dated. Some of the electronics were not working. To top it, three bags didn’t arrive with me. Two of them were delivered a day later. I’m still waiting for the third bag, I was so looking forward to this virgin Atlantic flight, but, I am disappointed.

We had a wonderful experience with Aer Lingus. The seats were too close for the long trip. The crew was absolutely perfect. They were so caring and thoughtful! My husband did not have a good experience with Air Lingus on the phone when trying to take care of getting better seating because he is disabled and needed a wheelchair prior to the day of our flight! Mariam R. in Boston was so helpful with seating and getting help for my husband. Filip Pytka who works for OCS was extremely helpful! He made sure that we had the lift because my husband could not climb the stairs to get onto the airplane. He took us from the gate all the way down to where we needed to be.

Well, I think we left close to on time. Crew was “eh”.

Seats are terribly cramped. I’m only 5’2” and my knees were practically in my face. No room to put a normal size bag under the seat and when the person in front of you reclined their seat your tray table was in your lap. This is the airline’s way of cramming more seats into the plane to make more money. I’ll think twice about taking Aer Lingus again since there are a few other options from Boston to the Emerald Isle.

The food was mediocre, the coffee was terrible. The entertaining selection was plentiful. They lost my checked luggage which put a damper on my 10-day vacation.

Weeeeeeell, you folks know economy class on Airbuses well--you're packed in like sardines. We may actually spring for more expensive seats next time, with a little room to stretch out. NO room to stretch out in Airbus economy class! :-) Apart from this, the food was decent (considering that it's mass-produced, and has severe spatial restrictions of its own), the staff were friendly enough, and there was a wide selection of movies, etc. to watch. Overall, I'd tend to use the word "adequate" rather than "exceptional" for my experience. But really, how could it be otherwise?

Food was very bad. Boarding was disorganized and messy. Crew was friendly

Gate agents kind of serious. Had to wait til arriving at gate to choose seats. Thankfully they did give us seats together! And grateful the honored our age, giving us seats at the front.

Great service on the plane and by ground staff. great prices. I was able to change seats on the plane. The allocated seats cannot be changed when checkin in online. They have to be done at the airport if you check in at the airport or on the plane by asking a stewardess / steward.

Great travel. Wonderful experience. Hope to do it again in the near future. God willing

The transatlantic flight was wonderful. The regional reminded me of jet blue. Crazy and packed. Not enough overhead space and tough on elderly.

Horrible - for the first time in my life i was denied boarding an international flight because the name used on my ticket - Josh - was not exactly the same as my passport - Joshua. At no time during ticketing, online check-in, or at the airport flying from Boston to NY was i notified of a problem. It was only at boarding from NY to Costa Rica I was informed of the problem and by then it was too late. After missing the flight I was told by airport Jet Blue staff, including a supervisor, that it was my problem and they could not assist because i bought "the cheapest fare". i was hung up on twice by JetBlue customer service, including once by a supervisor. I blame Kayak and your awful partner ChatDeal for even allowing me to purchase an international ticket without verifying this - you effectively sold me a ticket i could not use. Shame on you and shame on ChatDeal for doing nothing to help me resolve the situation. What a scam.

The flight kept getting delayed, but the ground crew did not communicate well to the passengers in the terminal. First, we were told that it was an engine issue. That was understandable. We asked, after the third delay, if it would be canceled; they reassured us that that would not happen because a new plane was on its way from Washington DC. Four hours later, that is exactly what happened. No announcement was made only people who had the JetBlue app learned of the cancellation. They rebooked us on a flight that would get into our destination 36 hours after our original time I had to spend an exorbitant amount of money to book an additional flight with a different airline, the following morning in order to make it to my conference in time. Not to mention the fact that by the time I discovered the cancellation on the departures board, it was too late for me to receive a refund on my lodging in the destination city for that night. Because I had booked with KAYAK, I did not receive any JetBlue email with rebooking information. This is what the information information desk kept telling everyone who inquired about a rebooking. This was my first time flying with JetBlue. Needless to say, after extremely poor communication andover $1000 of additional expense later, I will not be flying with them again.

We were several hours delayed due to confusion during boarding. Evidently the crew could not match the manifest with the boarded customers. After significant time trying to find individuals on board, a crew member walked through the entire plane re-scanning each of our boarding passes. Then we had to wait for a new slot to depart, and when we landed, our gate was not ready. It was a complete goat rodeo from start to finish.

Horrible. Flight was cancelled, jet blue app not working to rebook, no phone number available to call Jet Blue, 400 ish people in line for the help desk, stuck in Boston for 2 more days had to book new flight with a different airline and still not sure if I will be able to get any refund.

Flight was delayed many times. The crew was friendly but you eleven had to buy headphones to access the movies in the plane. $8 is not a lot for one person but it is when you travel with all your family.

The food took two hours to be delivered to my seat, when I'm on an overnight flight I want to sleep asap after take off

Flight left 2 hours late with no explanation as to the delay

I like everything. Blythe at DCA is the absolute best!

Whole experience was poor. Delayed 2 hours. Lied about the delays. Was all jet blues fault and tried to blame on air traffic control. Sent out other let trips and wouldn't allow people to switch aircraft.

My bag was not loaded on my flight. it was not communicated to me until i was waiting for my bag at my destination. there was no confirmation of when my bag was arriving and no way to track it.

We waited at BOS at the gate for an hour and couldn’t get a drink or anything. Once in the air the service, food and ride was excellent.

I travelled in business class and was disappointed by lack of service, curt and borderline rude time of the crew and to top it off, all of my luggage was delayed. It was like pulling teeth to even report the missing luggage and recover it the next day from the airport.

The seating has become ridiculous… like a contest to see how narrow and short they can be made- forcing anyone over 5’1 to pay more to not be twisting oneself into a pretzel. Really insane- would have thought BA was better than this. Frankly- it cancels out a lot of the positive aspects.

Online check-in 24 hours in advance something seems not so easy to check in to pick seats and to print a boarding pass

My experience with British Airways is excellent, thanks for all 🫶🏻✈️

They took my carry on and checked it in. Staff in general at Heathrow are not friendly or helpful

5 days later I have not yet received my luggage so terrible and unacceptable

Lost luggage l try contact the airline no answer FILE REFERENCE# CHQBA10196/14 SEP24/ 1043 YEE JAMES FLIGHT/DATE - BA202/13SEP/BA666/14SEP NUMBER OF BAG - 1 TICKET NUMBER- BA219096982 COLOR/ TYPE - BLACK DUFFEL/ SPORT BAG TAG NUMBER - BA401690/

Didn’t even get on the flight!! BA had a system crash and knocked many peoples boarding passes back for the connecting flight which we all would have made but ended up missing due to being refused past the barrier. There was one member of staff on and when he shift swapped the new staff member called us liars and that we were going to be too late for our flight hence the knock back which was false. I was an hour and ten minutes early for my connection flight at the time of scanning the boarding pass. Waited for three hours and ended up having to book a train home myself which was 4 hours long! Staff were useless and entire experience was an inconvenience. I had been travelling for three months and of course it was when I was back in my home country that I had the first muck up! Will not be touching BA to fly again

Flight left late and we missed our connection in London requiring an 8 hour wait in Heathrow for the next available flight. One of flight attendants was not helpful with my husband’s necessary crutches.

Everything you need to know for your flight from Boston to the United Kingdom

Information on your arrival and departure airports