£344 Find Cheap Flights from London to Maine

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from London to Maine departing on 16/8. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Maine

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Maine, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from London to Maine, as well as popular online travel agencies
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Flight Deals

Cheap Flights from London to Maine

Cheapest return prices found by our users on KAYAK in the last 72 hours
Portland
Portland1 stop£575
Bangor
Bangor2 stops£794
Portland
Portland1 stop£575
Bangor
Bangor2 stops£794

Book Cheap London to Maine Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from London to Maine 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 London to Maine

Sat, 4 Jul - Sun, 12 Jul
LEVEL Logo
19:40 - 21:45
LGW
-
BOS
31h 05m
1 stop
LEVEL Logo
23:35 - 08:30
BOS
-
LGW
27h 55m
1 stop
£474LEVEL
Fri, 17 Jul - Sun, 30 Aug
Iberia Logo
09:15 - 19:10
LHR
-
BOS
14h 55m
1 stop
Iberia Logo
21:20 - 14:55
BOS
-
LHR
12h 35m
1 stop
£475Iberia
Mon, 14 Sep - Fri, 18 Sep
Icelandair Logo
15:40 - 21:45
LGW
-
BOS
11h 05m
1 stop
Icelandair Logo
20:50 - 14:40
BOS
-
LGW
12h 50m
1 stop
£476Icelandair
Sun, 13 Sep - Fri, 18 Sep
Icelandair Logo
21:25 - 18:50
LHR
-
BOS
26h 25m
1 stop
Icelandair Logo
20:50 - 20:20
BOS
-
LHR
18h 30m
1 stop
£476Icelandair
Tue, 19 May - Tue, 7 Jul
Icelandair Logo
21:25 - 18:50
LHR
-
BOS
26h 25m
1 stop
Icelandair Logo
23:00 - 20:20
BOS
-
LHR
16h 20m
1 stop
£477Icelandair
Tue, 7 Jul - Thu, 16 Jul
British Airways Logo
17:35 - 20:05
LHR
-
BOS
7h 30mdirect
British Airways Logo
21:50 - 09:35
BOS
-
LHR
6h 45mdirect
£478British Airways
Sat, 20 Jun - Fri, 11 Sep
United Airlines Logo
10:25 - 17:17
LHR
-
BOS
11h 52m
1 stop
United Airlines Logo
12:34 - 05:55
BOS
-
LHR
12h 21m
1 stop
£479United Airlines
Mon, 7 Sep - Sun, 20 Sep
JetBlue Logo
08:15 - 12:21
LHR
-
PWM
33h 06m
1 stop
JetBlue Logo
06:00 - 20:45
PWM
-
LHR
9h 45m
1 stop
£575JetBlue
Thu, 24 Sep - Tue, 29 Sep
JetBlue Logo
08:15 - 23:52
LHR
-
PWM
20h 37m
1 stop
JetBlue Logo
06:00 - 20:45
PWM
-
LHR
9h 45m
1 stop
£617JetBlue
Mon, 7 Sep - Sun, 20 Sep
United Airlines Logo
07:25 - 10:02
LHR
-
PWM
31h 37m
2 stops
United Airlines Logo
20:15 - 05:55
PWM
-
LHR
28h 40m
1 stop
£669United Airlines
Booking Insights

KAYAK's insights & trends for London to Maine flights

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

How much is a return flight from London to Maine?

This analysis is based on the cheapest return trip price found on KAYAK in the last 12 months by searching for a flight from London to Maine departing in September.

What is the cheapest month to fly from London to Maine?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from London to Maine, 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 London to Maine is October, when tickets cost £120 (return) on average. On the other hand, the most expensive months are January and April, when the average cost of return tickets is £547 and £538 respectively.

Good to know - Cheap tickets from London to Maine

Low seasonFebruary
Cheapest flight£344
Best time to beat the crowds (34% less expensive on average)
Most popular time to fly and prices are also 25% lower on average.
Flight from London Stansted Airport to Boston

FAQs - booking Maine flights

  • How does KAYAK find such low prices on flights from London to Maine?

    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 London to Maine.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from London to Maine 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 London to Maine?

    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 London to Maine 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 London to Maine?

    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 London to Maine up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from London to Maine

 
See real verified KAYAK customer reviews for airlines flying from London to Maine. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from London to Maine? 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.
7.4
United AirlinesOverall score based on 9684 reviews
7.3Comfort
8.1Crew
7.1Entertainment
7.7Boarding
6.6Food
Airline reviews

Left an hour and a half after the listed time. Up side was it had TV screens on the seat.

4.0 OkayMaya, May 2026
IAH - MIA
Read more United Airlines reviews

Left an hour and a half after the listed time. Up side was it had TV screens on the seat.

No screens or meal options. Freezing cold. Dirty seats. Left late.

O’hsre taxi and deboarding took 40 minutes. Needed 20 minutes extra time between connecting flights to avoid running through terminal.

Seats very comfortable; service efficient and pleasant; flight was on-time; boarding organized.

Seats were not super comfortable and food was not good at all. If I had a chance I would definitely fly a different airline. Of course they are better than any budget airline, but not by much.

Overall a good experience, but no wifi available for free or for purchase and we got wet from condensation or other water source during descent.

Very friendly and helpful staff on board and United was excellent when I missed my onward flight due to the delay in London. Very well organised meant much less stress

Flew steerage class. Short on leg room unless you pay more. No window unless you pay more. Etc. United is trying to squeeze every cent from you. It doesn’t make for any loyalty.

Booked through Kayak Business, had a seat in middle and towards back due to booking rate, not comfortable.

Was great in general, try to respect time and excuses when slight changes have been made, appreciated!

Kayak sucked. You gave me a confirmation number that was not useable by the jet blue system. Nor did you send any check in emails. I’ll not be using your site again. Nice work.

Given us a free miles or free flight for waiting for 9 hours I didn’t get home till 5am in the morning and I was supposed to be home at 9:30 touch down.

Easy experience even with the outbound flight being delayed. The seating and space was comfortable and the crew seemed very nice and helpful.

I have always loved JetBlue and had no complaints on my last trip… I will always recommend then. Thank you JetBlue

Excellent price. Everything on time. two bad parts. Kayak said I couldn't sign in for the flight online, but I got an email at the same time from Jet Blue and they let me sign in online. Second bad part was that, although I had provided my known traveler number, neither of my boarding passes, for this flight and the previous one, had TSA pre-check showing.

The comfortability was very good. Except, when entering the craft the the first steward never greeted us upon entering the airplane. He spoke too fast where his words were all jumbled and difficult to understand.

Jet blue was great But the Jayak system Wasa pure nightmare and wasted so much of my time and energy by not giving me a way to access jet blue to check in the flight back I didn’t even get the number confirmation code 24 hours before. Because I didn’t receive the email with the confirmation code I could NoT CHECk IN. I spoke to a kayak third party and they informed me I could not carry a carry on, on the flight which caused me so much extra stress it was just too much. You can be sure I will not be using it recommending your site. Again.

There was a screen but no earphones that could use the older input so I could listen to anything.

My experience with JetBlue was fine BUT I am very upset with Kayak! JetBlue had delayed our scheduled departure by an hour and you NEVER notified me of the change. I did not hear directly from JetBlue because the trip was booked through Kayak, a mistake I will not repeat. Your reminder of the our trip last week still had the WRONG departure time. Our return trip has also changed, and again no notice from you.

Jet blue just had great service overall! Only a little turbulence heading out of Austin, otherwise the jet stream helped the speed of the trip!

Everything you need to know for your flight from London to Maine

Cabin class types available on flights to Maine

Cabin classes available on flights to Maine. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.