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Cheap flights from Maine to London from $259

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Maine to London departing on 9/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Maine to London

Cheap round-trip flights

Enter your travel dates to find the best prices.
Icelandair Logo
7:50 pm - 7:30 pmBOS  Boston Logan Intl-LHR London Heathrow
18h 40m1 stop Reykjavik Keflavik Intl
Icelandair Logo
12:15 pm - 5:50 pmLHR  London Heathrow-BOS Boston Logan Intl
10h 35m1 stop Reykjavik Keflavik Intl
$625Icelandair
Fri, Nov 27 - Mon, Dec 7
Icelandair Logo
7:50 pm - 7:30 pmBOS  Boston Logan Intl-LHR London Heathrow
18h 40m1 stop Reykjavik Keflavik Intl
Icelandair Logo
12:15 pm - 5:50 pmLHR  London Heathrow-BOS Boston Logan Intl
10h 35m1 stop Reykjavik Keflavik Intl
$625Icelandair
Fri, Nov 27 - Tue, Dec 1
Multiple Airlines Logo
8:50 pm - 8:20 pmBOS  Boston Logan Intl-LHR London Heathrow
18h 30m1 stop Reykjavik Keflavik Intl
Multiple Airlines Logo
10:00 am - 4:50 pmLHR  London Heathrow-BOS Boston Logan Intl
11h 50m1 stop Shannon
$630Multiple Airlines
Wed, Oct 14 - Wed, Jan 20
Multiple Airlines Logo
10:00 pm - 2:40 pmBOS  Boston Logan Intl-LHR London Heathrow
11h 40m1 stop Frankfurt am Main
Multiple Airlines Logo
8:50 pm - 9:05 pmLHR  London Heathrow-BOS Boston Logan Intl
29h 15m1 stop Barcelona-El Prat
$631Multiple Airlines
Sun, Oct 11 - Wed, Oct 21
Scandinavian Airlines Logo
5:40 pm - 2:35 pmBOS  Boston Logan Intl-LHR London Heathrow
15h 55m2 stops Kastrup Copenhagen Oslo Gardermoen
Scandinavian Airlines Logo
6:40 am - 3:35 pmLHR  London Heathrow-BOS Boston Logan Intl
13h 55m1 stop Kastrup Copenhagen
$640Scandinavian Airlines
Thu, Oct 8 - Mon, Oct 12
Scandinavian Airlines Logo
6:35 pm - 9:35 amBOS  Boston Logan Intl-LHR London Heathrow
35h 00m2 stops Kastrup Copenhagen Oslo Gardermoen
Scandinavian Airlines Logo
10:35 am - 3:40 pmLHR  London Heathrow-BOS Boston Logan Intl
34h 05m2 stops Oslo Gardermoen Kastrup Copenhagen
$641Scandinavian Airlines
Fri, Oct 30 - Fri, Nov 6
Air Canada Logo
3:30 pm - 7:10 amBOS  Boston Logan Intl-LHR London Heathrow
10h 40m1 stop Montreal Pierre Elliott Trudeau Intl
Air Canada Logo
1:00 pm - 9:28 pmLHR  London Heathrow-BOS Boston Logan Intl
13h 28m1 stop Montreal Pierre Elliott Trudeau Intl
$656Air Canada
Fri, Nov 20 - Sat, Nov 28
Air Canada Logo
10:35 am - 7:10 amBOS  Boston Logan Intl-LHR London Heathrow
15h 35m1 stop Montreal Pierre Elliott Trudeau Intl
Air Canada Logo
9:00 am - 5:42 pmLHR  London Heathrow-BOS Boston Logan Intl
13h 42m1 stop Halifax Intl
$660Air Canada
Tue, Nov 10 - Thu, Nov 12
Lufthansa Logo
9:40 pm - 11:20 amBOS  Boston Logan Intl-LHR London Heathrow
32h 40m1 stop Zurich
Lufthansa Logo
9:30 am - 9:45 amLHR  London Heathrow-BOS Boston Logan Intl
29h 15m1 stop Montreal Pierre Elliott Trudeau Intl
$671Lufthansa
Thu, Aug 20 - Sun, Aug 23
Lufthansa Logo
5:45 pm - 2:40 pmBOS  Boston Logan Intl-LHR London Heathrow
15h 55m1 stop Frankfurt am Main
Lufthansa Logo
1:35 pm - 5:40 pmLHR  London Heathrow-BOS Boston Logan Intl
33h 05m1 stop Munich Franz Josef Strauss
$721Lufthansa
Sat, Aug 22 - Mon, Aug 24

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Icelandair flights from Maine to London Heathrow Airport

Our best Icelandair deals on Maine to London Heathrow Airport flight tickets
Icelandair
Nov 27
BOS7:50 pmBoston Logan Intl
18h 40m
1 stop
LHR7:30 pmLondon Heathrow
Dec 1
LHR12:15 pmLondon Heathrow
10h 35m
1 stop
BOS5:50 pmBoston Logan Intl
$625
Icelandair
Sep 18
BOS8:50 pmBoston Logan Intl
10h 05m
1 stop
LHR11:55 amLondon Heathrow
Sep 27
LHR9:25 pmLondon Heathrow
29h 20m
1 stop
BOS9:45 pmBoston Logan Intl
$631
Icelandair
Nov 1
BOS7:50 pmBoston Logan Intl
10h 00m
1 stop
LHR10:50 amLondon Heathrow
Nov 8
LHR8:35 pmLondon Heathrow
26h 15m
1 stop
BOS5:50 pmBoston Logan Intl
$632

LEVEL flights from Maine to London Heathrow Airport

Our best LEVEL deals on Maine to London Heathrow Airport flight tickets
LEVEL
Aug 19
BOS10:55 pmBoston Logan Intl
29h 15m
1 stop
LHR9:10 amLondon Heathrow
Aug 26
LHR8:50 pmLondon Heathrow
29h 55m
1 stop
BOS9:45 pmBoston Logan Intl
$637
LEVEL
Aug 19
BOS10:55 pmBoston Logan Intl
29h 15m
1 stop
LHR9:10 amLondon Heathrow
Aug 26
LHR8:50 pmLondon Heathrow
29h 55m
1 stop
BOS9:45 pmBoston Logan Intl
$644
LEVEL
Aug 19
BOS10:55 pmBoston Logan Intl
29h 15m
1 stop
LHR9:10 amLondon Heathrow
Aug 26
LHR8:50 pmLondon Heathrow
29h 55m
1 stop
BOS9:45 pmBoston Logan Intl
$650

momondo Fare Finder

 
Customize your flight search to find flights from Maine to London Heathrow Airport that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated August 5, 2026.
Use the filters below to find and compare flights from Maine to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BostonLondon

BOS Boston Logan Intl - LHR London Heathrow

BOSLHR

Boston Logan Intl

Fri 11/27

7:50 pm-7:30 pm

1 stop18h 40m

London Heathrow

Mon 12/7

12:15 pm-5:50 pm

1 stop10h 35m

$625

BostonLondon

BOS Boston Logan Intl - LHR London Heathrow

BOSLHR

Boston Logan Intl

Fri 11/27

7:50 pm-7:30 pm

1 stop18h 40m

London Heathrow

Tue 12/1

12:15 pm-5:50 pm

1 stop10h 35m

$625

BostonLondon

BOS Boston Logan Intl - LHR London Heathrow

BOSLHR

Boston Logan Intl

Wed 10/14

8:50 pm-8:20 pm

1 stop18h 30m

London Heathrow

Wed 1/20

10:00 am-4:50 pm

1 stop11h 50m

$630

BostonLondon

BOS Boston Logan Intl - LHR London Heathrow

BOSLHR

Boston Logan Intl

Sun 10/11

10:00 pm-2:40 pm

1 stop11h 40m

London Heathrow

Wed 10/21

8:50 pm-9:05 pm

1 stop29h 15m

$631

BostonLondon

BOS Boston Logan Intl - LHR London Heathrow

BOSLHR

Boston Logan Intl

Thu 10/8

5:40 pm-2:35 pm

2 stops15h 55m

London Heathrow

Mon 10/12

6:40 am-3:35 pm

1 stop13h 55m

$640

BostonLondon

BOS Boston Logan Intl - LHR London Heathrow

BOSLHR

Boston Logan Intl

Fri 10/30

6:35 pm-9:35 am

2 stops35h 00m

London Heathrow

Fri 11/6

10:35 am-3:40 pm

2 stops34h 05m

$641
Quickest round-trip

BostonLondon

BOS Boston Logan Intl - LHR London Heathrow

BOSLHR

Boston Logan Intl

Fri 11/20

3:30 pm-7:10 am

1 stop10h 40m

London Heathrow

Sat 11/28

1:00 pm-9:28 pm

1 stop13h 28m

$656

BostonLondon

BOS Boston Logan Intl - LHR London Heathrow

BOSLHR

Boston Logan Intl

Tue 11/10

10:35 am-7:10 am

1 stop15h 35m

London Heathrow

Thu 11/12

9:00 am-5:42 pm

1 stop13h 42m

$660

BostonLondon

BOS Boston Logan Intl - LHR London Heathrow

BOSLHR

Boston Logan Intl

Thu 8/20

9:40 pm-11:20 am

1 stop32h 40m

London Heathrow

Sun 8/23

9:30 am-9:45 am

1 stop29h 15m

$671

BostonLondon

BOS Boston Logan Intl - LHR London Heathrow

BOSLHR

Boston Logan Intl

Sat 8/22

5:45 pm-2:40 pm

1 stop15h 55m

London Heathrow

Mon 8/24

1:35 pm-5:40 pm

1 stop33h 05m

$721

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to London from

How to get the cheapest flight ticket from Maine to London Heathrow Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to London Heathrow Airport?

The month of December is, on average, the cheapest month to fly to London Heathrow Airport from Maine, with most prices found around $0. If you’re not able to fly to London Heathrow Airport in December, then January is your next best option. Flight prices from Maine to London Heathrow Airport during January average around $0.

Cheap Maine to London Heathrow Airport flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Maine to London Heathrow Airport

Fastest flight time

6h 30m

Direct flights

Every day
The fastest flight from Maine to London Heathrow Airport takes 6h 30m
Direct flights go from Maine to London Heathrow Airport every day.
Search flight deals

Frequently asked questions about flying from Maine to London Heathrow Airport

  • When did momondo last update prices for flights from Maine to London Heathrow Airport?

    Prices for flights from Maine to London Heathrow Airport are updated daily.

  • How many operators does momondo search for flights from Maine to London Heathrow Airport?

  • How old do you have to be to fly from Maine to London Heathrow Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Maine to London Heathrow Airport.

  • What documentation or ID do you need to fly to London Heathrow Airport?

    The necessary travel and health documents for your London Heathrow Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Maine to London Heathrow Airport

Compare and see reviews for airlines that fly from Maine to London Heathrow Airport with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $752Free CancellationRating
7.4
10,058 reviews
Search United Airlines flights
American AirlinesPriceFrom $757Free CancellationRating
7.1
11,848 reviews
Search American Airlines flights

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Hounslow
Gatwick
Milton Keynes
Luton
Hayes
Wembley
Dover
Croydon
Stansted
Stratford-upon-Avon
Kingston upon Thames
Slough
Harrow
Watford
Cobham
Richmond
Uxbridge
Worthing
Romford
Ilford

Why use momondo?

Why should I use momondo to find a flight deal from Maine to London?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Maine to London for you.

Can I find flights from Maine to London with flexible booking policies on momondo?

Yes. All flights to London from Maine on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Maine to London?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to London from Maine.

I’m not ready to book a flight from Maine to London right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Maine to London now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to London and let you know when they change.

An easier way to manage your London Heathrow Airport trip

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