£168 Find Cheap Flights from Boston to the United Kingdom

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 27/4. 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£405
Manchester
Manchester2 stops£467
Edinburgh
Edinburgh3 stops£455
Birmingham
Birmingham1 stop£440
Belfast
Belfast2 stops£627
Bristol
Bristol1 stop£484
Aberdeen
Aberdeen1 stop£557
Liverpool
Liverpool1 stop£493
Leeds
Leeds2 stops£515
Inverness
Inverness1 stop£557
Newquay
Newquay1 stop£670
Nottingham
Nottingham2 stops£619
Cardiff
Cardiff1 stop£627
London
London1 stop£405
Manchester
Manchester2 stops£467
Edinburgh
Edinburgh3 stops£455
Birmingham
Birmingham1 stop£440
Belfast
Belfast2 stops£627
Bristol
Bristol1 stop£484
Aberdeen
Aberdeen1 stop£557
Liverpool
Liverpool1 stop£493
Leeds
Leeds2 stops£515
Inverness
Inverness1 stop£557
Newquay
Newquay1 stop£670
Nottingham
Nottingham2 stops£619
Cardiff
Cardiff1 stop£627

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

Tue, 13 Oct - Tue, 20 Oct
Multiple Airlines Logo
23:00 - 18:05
BOS
-
LTN
14h 05m
1 stop
Multiple Airlines Logo
12:45 - 21:15
LTN
-
BOS
13h 30m
1 stop
£405Multiple Airlines
Tue, 6 Oct - Tue, 20 Oct
LEVEL Logo
23:00 - 09:10
BOS
-
LHR
29h 10m
1 stop
LEVEL Logo
09:55 - 21:15
LHR
-
BOS
16h 20m
1 stop
£406LEVEL
Wed, 23 Sep - Wed, 30 Sep
LEVEL Logo
23:00 - 10:50
BOS
-
LGW
30h 50m
1 stop
LEVEL Logo
13:00 - 21:15
LGW
-
BOS
13h 15m
1 stop
£406LEVEL
Tue, 28 Apr - Thu, 30 Apr
Icelandair Logo
20:50 - 14:40
BOS
-
LGW
12h 50m
1 stop
Icelandair Logo
13:00 - 21:45
LGW
-
BOS
13h 45m
1 stop
£428Icelandair
Fri, 1 May - Sat, 30 May
TAP AIR PORTUGAL Logo
18:05 - 10:20
BOS
-
LHR
11h 15m
1 stop
TAP AIR PORTUGAL Logo
06:00 - 20:20
LHR
-
BOS
19h 20m
1 stop
£443TAP AIR PORTUGAL
Wed, 29 Apr - Thu, 7 May
Aer Lingus Logo
17:25 - 08:00
BOS
-
EDI
9h 35m
1 stop
Aer Lingus Logo
09:15 - 14:55
EDI
-
BOS
10h 40m
1 stop
£489Aer Lingus
Fri, 11 Sep - Wed, 16 Sep
Aer Lingus Logo
23:30 - 19:40
BOS
-
GLA
15h 10m
1 stop
Aer Lingus Logo
13:20 - 22:00
GLA
-
BOS
13h 40m
1 stop
£498Aer Lingus
Sun, 10 May - Sat, 16 May
Icelandair Logo
20:50 - 13:25
BOS
-
GLA
11h 35m
1 stop
Icelandair Logo
14:20 - 18:50
GLA
-
BOS
9h 30m
1 stop
£506Icelandair
Tue, 1 Sep - Tue, 29 Sep
British Airways Logo
21:50 - 15:20
BOS
-
BHD
12h 30m
1 stop
British Airways Logo
09:40 - 20:05
BHD
-
BOS
15h 25m
1 stop
£657British Airways
Tue, 1 Sep - Sun, 6 Sep
British Airways Logo
19:40 - 10:45
BOS
-
BHD
10h 05m
1 stop
British Airways Logo
11:00 - 17:00
BHD
-
BOS
11h 00m
1 stop
£659British Airways
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 72 hours was to London, at £274 return. 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 72 hours was £274.

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 £432 on average. Morning departures are around 21% 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 £523.

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 1 stop stopover the cheapest option at £503 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 October, when tickets cost £381 (return) on average. On the other hand, the most expensive months are June and December, when the average cost of return tickets is £588 and £518 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 24 weeks before departure.

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

Low seasonJanuary
Cheapest flight£168
Best time to beat the crowds (19% less expensive on average)
Most popular time to fly and prices are also 7% lower on average.
Flight from Boston to London Gatwick Airport

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 £246 one-way - £523 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 687 reviews
7.7Boarding
8.1Crew
7.3Comfort
7.5Entertainment
6.9Food
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

My seat 3G did not go down fully and the buttons were not working properly

Food has been disappointing in both legs of flight to india

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

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

Food was the worst I’ve had on a VA flight. Normally it’s a lot better

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

These are one of the older seat arrangements facing away from the windows! Not particularly convenient sets. No storage spaces. NO COAT HANGING HOOKS. Inconvenient business class seat compared to any other airlines of similar class. Staff are excellent! Extremely professional, friendly. Food is good too.

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 staff was not very polite but the flight was very very nice and comfortable and the entertainment was great

The crew was friendly. The plane was comfortable. In-flight wifi didn't work well at all. The ride was quite turbulent but understandable given the weather.

I flew economy class. Seats were very good and the crew was excellent

There was a 6h delay with limited updates . When we got to Manchester the bus took ages to get to arrivals and we missed our train, dinner reservation. Basically lost a whole day due to arrivals Lingus!!

Great. Has a problem with DOB. Fixed 4 us. Led to a 5 hour earlier flight to London!

Punctual, smooth flight. Crew excellent and cabin very clean. Paid for WiFi but once you close out you cannot get back in even if you paid for entire flight.

Flight crew was superb. Meal was one of the meals at altitude I’ve had

Canceled my flight couple hours before takeoff. They could not find a decent re-routing and refused to pay for when i subjected alternative with Lufthansa.

Seats a little to soft on the SFO DUB flight

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

Flight takeoff was delayed an hour, but arrival time was not updated at the same time as departure time, so those picking me up at the other end were not alerted to the change in my arrival.

Entertainment and wifi were very sub-par - audio issues and no wifi

We were delayed and had to circle due to weather and had to divert for fuel. While I understand that you can’t control the weather I would have appreciated knowing that the crew wasn’t going to run out of hours and then having to spend the night in the Raleigh airport.

Messy plane that was falling apart Small screens that didn't work

I was traveling with two small kids and our TV s were the only ones not working. Informed the flight attendant who did nothing about them.

They forced me to check my hand luggage at the gate.

I specifically choose not to check bags to ensure I can proceed directly to ground transportation upon arrival. However, due to a recurring lack of cabin space, I was again forced to gate-check my rolling luggage after going through my luggage to take out electronics and batteries. This practice unilaterally changes the service agreement made at the time of purchase. JetBlue needs to find a better way to manage overhead space that honors the carry-on baggage allowance.

Still hasn’t left. Why are you asking how it was?

Flight was good wish there were more snacks options for such a long flight but stewardesses were very pleasant as was flight crew.

I was denied a plastic fork to eat my food and was told plastic forks are for paying customers who buy Jet Blue’s food. So I had to make a utensil out of a cup so nourish my body. Like a refugee. Because decency is dead.

I was especially impressed without efficiently the crew got passengers on and off. One of the stewards was slightly gruff, I thought. No big deal but that's what I noticed.

In general, I've had excellent experiences with Iberia flights and will continue to use them. In this last flight there were two things that didn't go right. I didn't get the kosher meal I had pre-requested when I had checked in on-line. Things worked out OK as we ended up eating the fish and vegetarian choices, which were really good. The other issue was that some movies for me and my wife started fine but after 8-12 minutes the content just switched to something else. The flight attendant reset our entertainment systems, but the problem persisted. We ended up choosing other movies/TV shows that did work fine.

Flight was fine - however my husband's checked in case was damaged, and mine still has not arrived

Awful. They didn't even show concern that her connecting flight( Dallas to Mardrid) was gone/missing. I don't understand how that is even possible. Rudest answer from one of the crew was that American Airlines sold the tickets to somebody else. My daughter was not in the list.

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

Excellent lie flat seat for premium economy! Great staff. Bad food . Not so great entertainment. My bag didn’t make it either.

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

The boarding procedure got confusing because they wanted to weigh everyone’s carry-on. Apparently mine was 3 1/2 kg over their limit. I didn’t know they had a limit. And at the check-in desk, nothing was said about this. They wanted me to check the carry-on at no charge and that would have been fine except then they told me at my connection in London I would have to go outside to baggage claim retrieve my bag, and then recheck it. In other words, they could not check it to my final destination, only to London. I told him this was unacceptable so after a few minutes of discussion, they came back and said that my bag would be OK to carry on the plane. It seems that if you have a connection then the weight is not as important. Then when I actually went to board the boarding agent said I needed a tag indicating that my bag had been weighed, even though she had just five minutes ago talked to the same person who cleared me. Lots of confusion seems like a very bad process. They need to improve this.

My flight being automatically moved messed up my travel plans, and I had to quickly find an alternative mode of transportation. I couldn’t get a refund from any of the companies involved. Kayak, Ibiza, or Vueling. I am still unsure of how to settle my concern.

Plane delayed due to weather. Plane boarded, then told to unboard due to a maintenance issue.

the seats were so cramped you could barely move. it was difficult to eat when passengers would recline their seats. the seats were so flimsy and unstable that whenever someone got in and out of their seat, it bounced like a spring back in your face. the movies were nice. the food was terrible. even though the conditions were terrible, they tried to pressure passengers to relocate their seats to accommodate adults who were related and wanted to sit next to each other, even after the passengers expressed that they did not want to move for that purpose. on the connecting flight, the “service” consisted of items for purchase. even though the flight was only 45 minutes, once again passengers (including me) were pressured to relocate for people to sit next to each other. they couldn’t be apart for 45 minutes? this was much less compelling than being apart for an 8 hour flight.

Overall ok. Best part has always been the sundae dessert.

I’ve never been on a trans-Atlantic (or Pacific) flight where the seats don’t recline—not even a little. I asked my seat mate when BA starting doing this and he said “Oh, a few years ago.” I couldn’t sleep, with my head falling forward waking me continuously, and came off the plane incredibly stiff. I booked a Premium Economy seat to get a more comfortable seat, which was worse than most basic Economy seats I’ve ever booked.

Nice aircraft. Good crew. Delayed departure from Houston, but arrived on time in London. Main thing I don’t like about flying BA is having to transit through security in London Heathrow. A major pain!

The gate agent made me check my carry-on in Denver, even though I've traveled all over taking this case on the plane. Beware folks. Food in Premium Economy was quite good - excellent blanket! Flight attendants on the Heathrow-to-Budapest flight on 3-27-2026 were quite snappy. I got a frown when asked to unscrew the water bottle cap for me (I had a cast on my right arm). Also woke up right when they were handing out biscuits. She had given my rowmates one and was in the process of giving water when I asked for a biscuit. She scolded me and said, "You snooze, you lose". She did give me one, but I thought that comment was uncalled for.

Wish the food and overall service was better. They treat Business class passengers same as economy

WiFi wasn’t available to economy until the end of the flight.

Very good staff members with sincere passion and responsibility in their job.

Very please with the seating that the Kayak staff booked for us!

Worth every penny to upgrade to BC. Treated and felt more like First Class

Good service, food and comfort in World Traveller Plus. Entertainment was poor - no wifi on the way out and barely working on the way back. Not a great choice of entertainment on the seat back tv.

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

Information on your arrival and departure airports