$231 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 10/18. 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.
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1 adult, Economy, 0 bags

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Cheap Flights from Boston to the United Kingdom

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
London
London1 stop$670
Edinburgh
Edinburgh1 stop$512
Manchester
Manchester1 stop$798
Birmingham
Birmingham2 stops$653
Belfast
Belfast2 stops$724
Inverness
Inverness1 stop$808
Bristol
Bristol1 stop$521
Aberdeen
Aberdeen2 stops$729
Leeds
Leeds2 stops$672
Liverpool
Liverpool2 stops$641
Cardiff
Cardiff2 stops$689
Newquay
Newquay1 stop$795
Kirkwall
Kirkwall2 stops$1,393
London
London1 stop$670
Edinburgh
Edinburgh1 stop$512
Manchester
Manchester1 stop$798
Birmingham
Birmingham2 stops$653
Belfast
Belfast2 stops$724
Inverness
Inverness1 stop$808
Bristol
Bristol1 stop$521
Aberdeen
Aberdeen2 stops$729
Leeds
Leeds2 stops$672
Liverpool
Liverpool2 stops$641
Cardiff
Cardiff2 stops$689
Newquay
Newquay1 stop$795
Kirkwall
Kirkwall2 stops$1,393

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 round-trip 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 round-trip flight deals from Boston to the United Kingdom

Fri, Oct 23 - Sun, Nov 1
Multiple Airlines Logo
8:50 pm - 11:50 am
BOS
-
EDI
10h 00m
1 stop
Multiple Airlines Logo
7:45 am - 5:50 pm
EDI
-
BOS
15h 05m
1 stop
$512Multiple Airlines
Wed, Nov 11 - Sun, Nov 22
Multiple Airlines Logo
7:50 pm - 11:45 am
BOS
-
EDI
10h 55m
1 stop
Multiple Airlines Logo
7:45 am - 5:50 pm
EDI
-
BOS
15h 05m
1 stop
$518Multiple Airlines
Wed, Nov 18 - Sun, Nov 22
Multiple Airlines Logo
7:50 pm - 11:45 am
BOS
-
EDI
10h 55m
1 stop
Multiple Airlines Logo
7:45 am - 5:50 pm
EDI
-
BOS
15h 05m
1 stop
$521Multiple Airlines
Wed, Oct 14 - Wed, Oct 21
Multiple Airlines Logo
11:00 pm - 12:20 am
BOS
-
EDI
20h 20m
2 stops
Multiple Airlines Logo
5:50 pm - 9:05 pm
EDI
-
BOS
32h 15m
1 stop
$523Multiple Airlines
Wed, Aug 5 - Wed, Aug 19
Icelandair Logo
8:50 pm - 2:40 pm
BOS
-
LGW
12h 50m
1 stop
Icelandair Logo
3:40 pm - 6:50 pm
LGW
-
BOS
32h 10m
1 stop
$670Icelandair
Wed, Sep 16 - Sun, Oct 4
Scandinavian Airlines Logo
5:40 pm - 5:40 pm
BOS
-
LHR
19h 00m
1 stop
Scandinavian Airlines Logo
9:05 pm - 3:35 pm
LHR
-
BOS
23h 30m
2 stops
$670Scandinavian Airlines
Tue, Sep 1 - Sat, Sep 5
Icelandair Logo
8:50 pm - 2:40 pm
BOS
-
LGW
12h 50m
1 stop
Icelandair Logo
3:40 pm - 9:45 pm
LGW
-
BOS
11h 05m
1 stop
$671Icelandair
Sun, Aug 23 - Tue, Aug 25
Air Canada Logo
2:45 pm - 10:00 am
BOS
-
LHR
14h 15m
2 stops
Air Canada Logo
6:50 am - 4:03 pm
LHR
-
BOS
14h 13m
2 stops
$671Air Canada
Tue, Sep 8 - Wed, Sep 16
Scandinavian Airlines Logo
5:40 pm - 9:20 am
BOS
-
LHR
10h 40m
1 stop
Scandinavian Airlines Logo
7:50 pm - 3:35 pm
LHR
-
BOS
24h 45m
2 stops
$672Scandinavian Airlines
Fri, Aug 21 - Thu, Aug 27
Aer Lingus Logo
5:25 pm - 8:40 am
BOS
-
MAN
10h 15m
1 stop
Aer Lingus Logo
11:40 am - 6:50 pm
MAN
-
BOS
12h 10m
1 stop
$800Aer 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 Edinburgh, at $364 round-trip. The most popular route is from Boston (BOS) to London Heathrow Airport (LHR), and the cheapest round-trip airline ticket found on this route in the last 5 days was $389.

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 round-trip flights cost $625 on average. Morning departures are around 15% more expensive than evening flights, on average. The most expensive time of day to fly to the United Kingdom is generally at night, which is peak travel time and where the average cost of a ticket is $734.

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

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $802, prices are generally cheapest when you fly direct.

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 $552 (return) on average. On the other hand, the most expensive months are June and July, when the average cost of round-trip tickets is $1,043 and $883 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 your flying dates are flexible, you should consider flying to United Kingdom on a Sunday, as we generally find the cheapest rates on that day for this route. On the other hand, Saturday is the most expensive day to fly from Boston to United Kingdom. For your return ticket, we recommend flying on a Wednesday and avoiding Mondays for the best deals.

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

Low season

January

Cheapest flight

$231
Best time to beat the crowds with an average 25% drop in price.
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 travelers 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 travelers 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 round-trip 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 cheap flights to the United Kingdom

  • Looking for a cheap flight? 25% of our users found tickets from Boston to the following destinations at these prices or less: London $335 one-way - $772 round-trip

Reviews of the top 5 airlines serving 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.
7.8
DeltaOverall score based on 8476 reviews
7.2Food
7.8Entertainment
7.8Comfort
8.5Crew
8.1Boarding
Airline reviews

Very good seat and service. No complaints about the food. Take off delayed due to airport traffic

10.0 ExcellentSandra, Jul 2026
BOS - BCN
Read more Delta reviews

Very good seat and service. No complaints about the food. Take off delayed due to airport traffic

It is usually very pleasant. Good service for the price, international flights are even better

Flight attendant was very poor in taking care or showing attention. I slept up front for a few and missed the snacks. She saw me many times, went by me many times and never once asked if I needed anything. The whole 2 hours flight. And this is to a Diamond member in first.

I thought the service was very nice and pleasant. There were no hiccups and no issues so overall a good experience.

It was a pleasant surprise to have complimentary Wi-Fi on the flight

Flight was delayed, we could have been notified earlier and in a consistent manner. App was not refreshing for another passenger to get the latest flight status. We could have stayed and waited at the hotel instead of waiting at the airport had we known the flight was going to delayed for more than 5 hours. The toilet is too tight, and needs to be cleaned more frequently (every hour). The entertainment screen froze, the touch screen not responding to touch. We were upgraded to comfort, it is more comfortable than regular economy seats.

The baggage belt was not updated on the Delta App and was displayed on the wrong belt board. Was not expecting this to happen.

The plan was delayed and left DC 90 minutes late. However, it showed a 20 minute delay on the delta app, then a 12 min delay. It turned out to be an hour delay. I found out where the plane was with flightaware. Stop keeping customers in the dark about what is going on.

Pilots lied about waiting on “paperwork”. Sat in the plane for over an hour, waiting on some papers to be printed according to the pilot and then all of a sudden he says good news maintenance is finally on their way. Maybe they can fix it before we get our paperwork. Ended up missing my connection in LaGuardia and as a result, had a fly home to Lexington instead of the Louisville airport. Then paid $100 to uber to Louisville since it was midnight by the time I got in. I wish they would just be transparent with passengers sometimes and not try to beat around the bush on why things are delayed.

Flight was cancelled after 3 1/2 hours. Support for rebooking was overwhelmed. Lost first class tickets and to fly economy.

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.

Because I bought my ticket from Underpricer, I could not check in online. I could only check in at the airport and that was deeply frustrating because I had to arrive very early. The flight also departed 45 min late and passengers were given no explanations about why we were delayed. I was worried I would miss my connecting flight. Once on board, however, the flight was fine.

Terrible boarding and first class experience. Nice staff but overall disorganized, dirty plane.

The flight was delayed significantly and we sat on runway after landing for awhile. Best thing was the flight attendant, Jenny, in first class, who was very professional and attentive. She was excellent - the rest of the flight was not.

Early departure meant on time arrival. Only real problem was free internet had issues, although chatting with the internet help desk (you can do this via aainflight.com) got the issue resolved.

The staff and service on American Airlines were truly outstanding. I had requested wheelchair assistance for my mother due to her knee issues, and the team went above and beyond every step of the way—from boarding in Boston to our arrival in Chicago. Their care, professionalism, and attentiveness made the entire experience smooth and stress-free. I’m very grateful for the support they provided.

Found that the plane used for this short flight is smaller and therefore the seats are really squeezed tight.

Tv screens and movie selection v good. Friendly staff. They were really worried about max capacity and room for carryons. That is never fun but i had no problem finding space when I boarded.

Uncomfortable plane, no entertainment and to board they had us standing in a line for over 20-30 minutes

Flight was delayed twice then cancelled. We were never notified of a new booking.

New Boeing 777 is very nice and spacious but Toilet Roll fixture and door ash tray fell apart - very cheaply made.

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