£173 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 15/9. 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
Londondirect£517
Manchester
Manchester1 stop£594
Edinburgh
Edinburgh2 stops£398
Birmingham
Birmingham1 stop£387
Belfast
Belfast3 stops£572
Bristol
Bristol2 stops£494
Liverpool
Liverpool2 stops£455
Aberdeen
Aberdeen1 stop£555
Leeds
Leeds2 stops£486
Inverness
Inverness2 stops£582
Newquay
Newquay1 stop£572
Cardiff
Cardiff1 stop£481
London
Londondirect£517
Manchester
Manchester1 stop£594
Edinburgh
Edinburgh2 stops£398
Birmingham
Birmingham1 stop£387
Belfast
Belfast3 stops£572
Bristol
Bristol2 stops£494
Liverpool
Liverpool2 stops£455
Aberdeen
Aberdeen1 stop£555
Leeds
Leeds2 stops£486
Inverness
Inverness2 stops£582
Newquay
Newquay1 stop£572
Cardiff
Cardiff1 stop£481

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

Mon, 16 Nov - Sat, 21 Nov
Multiple Airlines Logo
19:50 - 13:45
BOS
-
BHX
12h 55m
1 stop
Multiple Airlines Logo
07:00 - 17:50
BHX
-
BOS
15h 50m
1 stop
£387Multiple Airlines
Tue, 22 Sep - Tue, 6 Oct
Multiple Airlines Logo
20:50 - 19:40
BOS
-
EDI
17h 50m
2 stops
Multiple Airlines Logo
06:15 - 18:50
EDI
-
BOS
17h 35m
2 stops
£398Multiple Airlines
Wed, 5 Aug - Thu, 20 Aug
Multiple Airlines Logo
20:50 - 22:05
BOS
-
EDI
20h 15m
2 stops
Multiple Airlines Logo
07:45 - 18:50
EDI
-
BOS
16h 05m
2 stops
£414Multiple Airlines
Wed, 7 Oct - Sun, 11 Oct
Multiple Airlines Logo
20:50 - 22:05
BOS
-
EDI
20h 15m
2 stops
Multiple Airlines Logo
07:55 - 18:50
EDI
-
BOS
15h 55m
2 stops
£417Multiple Airlines
Sun, 6 Sep - Sun, 13 Sep
Scandinavian Airlines Logo
17:40 - 09:35
BOS
-
LHR
34h 55m
2 stops
Scandinavian Airlines Logo
21:05 - 15:35
LHR
-
BOS
23h 30m
2 stops
£518Scandinavian Airlines
Tue, 18 Aug - Fri, 21 Aug
Scandinavian Airlines Logo
17:40 - 17:40
BOS
-
LHR
19h 00m
1 stop
Scandinavian Airlines Logo
07:05 - 15:35
LHR
-
BOS
13h 30m
2 stops
£520Scandinavian Airlines
Fri, 11 Sep - Sat, 30 Jan
Icelandair Logo
20:50 - 20:20
BOS
-
LHR
18h 30m
1 stop
Icelandair Logo
12:15 - 17:50
LHR
-
BOS
10h 35m
1 stop
£521Icelandair
Fri, 11 Sep - Sun, 24 Jan
Icelandair Logo
20:50 - 20:20
BOS
-
LHR
18h 30m
1 stop
Icelandair Logo
20:35 - 17:50
LHR
-
BOS
26h 15m
1 stop
£522Icelandair
Tue, 1 Sep - Tue, 8 Sep
SWISS Logo
21:40 - 17:25
BOS
-
LCY
14h 45m
1 stop
SWISS Logo
09:15 - 15:10
LCY
-
BOS
10h 55m
1 stop
£570SWISS
Sun, 15 Nov - Wed, 18 Nov
Air Canada Logo
19:40 - 08:40
BOS
-
MAN
32h 00m
1 stop
Air Canada Logo
06:10 - 14:53
MAN
-
BOS
13h 43m
2 stops
£611Air Canada
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 £543 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 £558.

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 £404 on average. Morning departures are around 40% 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 £565.

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 £598 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 £389 (return) on average. On the other hand, the most expensive months are June and July, when the average cost of return tickets is £769 and £635 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 Tuesdays and avoid leaving on a Saturday, as it's usually the priciest day. When flying back from United Kingdom, Wednesday 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 seasonJanuary
Cheapest flight£173
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 Glasgow

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: London £265 one-way - £619 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
Virgin AtlanticOverall score based on 692 reviews
7.3Comfort
7.5Entertainment
8.1Crew
6.9Food
7.7Boarding
Airline reviews

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

4.0 OkayAnonymous, Mar 2026
BOS - LIS
Read more Virgin Atlantic reviews

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. 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.

The gate attendant in Boston had a high raspy voice and spoke much too fast to be understood. Not pleasant.

It was fine for what it was. It’s not luxury travel but it was efficient, for the most part. Having my carry-on transferred into luggage however, was unwelcome.

We had better-than-average leg room and I loved the access to shows and movies. During boarding, we could not hear the agent even though we were close to the boarding door, which was kind of scary when we realized that half of the passengers had already boarded. Also, the entertainment was awesome, but I could not hear the movie as well as I would have liked, because my headphones were crappy. It would have been better if I could connect my own ear buds via Bluetooth or if JetBlue provided headphones.

The flight was canceled on a Thursday last minute. I lost thousands of dollars in hotels and car rental

Really like the idea experience on this airline I will use again

The food on the flight was of marginal quality. Small bits of chicken, instant mashed potatoes and some carrots. The rolls were very dry, nearly inedible. The seats were quite small and didn’t allow for any shifting of position during the flight. There was limited leg room.0

We liked the flight but while we purchased an aisle seat, our seats had a different configuration on this flight. A fellow passenger suggested that the airplane had been changed. Too bad we were not informed and had no chance to modify our seat preferences. We were stuck in the window and middle seats with no chance to walk around and go to the bathroom without disturbing our sleeping fellow passenger.

Moved the flight an hour later, were not reliable about confirmation, website didn't work, no gate information, boarding was a mad house. Flight itself was fine and short. Organization needs work.

Not having to check carry on bags when plane wasn’t full. (The told us it was)

The connection required us to travel from terminal A to terminal E with very little time in between flights. While waiting in line, we were called to the service desk to provide our passports. We provided our passports at time of check in, assuming that American Airlines doesn’t communicate well with Iberia, this was a headache.

First flight was 5.5 hours delayed, the notification came within 2 hours of the flight (bags already checked in). connection missed- no one working on getting us on an alternate flight, knowing where our luggage will be. It was chaos figuring out how to get to our final destination. Customer service throwing us into nowhere on the phone- all while we have 2 small kids on us. It will take the whole vacation to recover from this experience. I am scared how the return flight will go in August. Check-in staff (not sure if they are airport hires or iberia hires- beyond rude, especially in Madrid.) On-plane staff, food and entertainment were good.

When I bought the ticket, right away I got a problem, I had to cancel. Unfortunately never ever I will use kayak or Iberia again. When trying to cancel kayak told me to talk directly with the airline, the airline talked to me through whatsap and told me to deal through kayak. Both of u never took responsibility in helping me out. You kayak did not want to deal with me. I called my credit card and now we r disputing the charge bc u have a pathetic customer service.

I’m hoping for WiFi included. Everything else was very good

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