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Cheap flights from Maine to London from £158

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 20/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags
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Cheap return flights

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United Airlines Logo
18:40 - 07:10BOS-LHR
31h 30m1 stop
United Airlines Logo
06:35 - 18:35LHR-BOS
17h 00m1 stop
£354United Airlines
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Tue, 2 Dec - Fri, 5 Dec
SWISS Logo
21:50 - 21:25BOS-LHR
18h 35m2 stops
SWISS Logo
20:05 - 20:20LHR-BOS
29h 15m1 stop
£355SWISS
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Sat, 8 Nov - Mon, 10 Nov
Brussels Airlines Logo
16:20 - 17:05BOS-LHR
19h 45m2 stops
Brussels Airlines Logo
06:50 - 14:52LHR-BOS
13h 02m2 stops
£356Brussels Airlines
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Mon, 3 Nov - Wed, 5 Nov
Multiple Airlines Logo
10:15 - 09:20BOS-LHR
18h 05m2 stops
Multiple Airlines Logo
19:25 - 14:05LHR-BOS
23h 40m1 stop
£357Multiple Airlines
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Wed, 26 Nov - Mon, 1 Dec
Multiple Airlines Logo
15:40 - 07:10BOS-LHR
10h 30m1 stop
Multiple Airlines Logo
09:00 - 20:20LHR-BOS
16h 20m1 stop
£357Multiple Airlines
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Wed, 12 Nov - Sun, 16 Nov
Lufthansa Logo
21:40 - 15:50BOS-LHR
14h 10m1 stop
Lufthansa Logo
08:45 - 18:35LHR-BOS
14h 50m1 stop
£358Lufthansa
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Sun, 26 Oct - Sun, 2 Nov
Multiple Airlines Logo
15:40 - 07:10BOS-LHR
10h 30m1 stop
Multiple Airlines Logo
09:00 - 20:20LHR-BOS
16h 20m1 stop
£359Multiple Airlines
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Mon, 10 Nov - Sun, 16 Nov
SWISS Logo
22:50 - 13:00BOS-LHR
10h 10m1 stop
SWISS Logo
12:05 - 20:20LHR-BOS
13h 15m1 stop
£360SWISS
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Mon, 27 Oct - Mon, 10 Nov
Aer Lingus Logo
20:25 - 09:15BOS-LHR
8h 50m1 stop
Aer Lingus Logo
10:00 - 16:50LHR-BOS
11h 50m1 stop
£362Aer Lingus
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Tue, 28 Oct - Sun, 2 Nov
Aer Lingus Logo
18:10 - 08:05BOS-LHR
9h 55m1 stop
Aer Lingus Logo
10:00 - 17:50LHR-BOS
11h 50m1 stop
£366Aer Lingus
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Sun, 8 Mar - Sun, 15 Mar

SWISS flights from Maine to London Heathrow Airport

Our best SWISS deals on Maine to London Heathrow Airport flight tickets
SWISS
8 Nov
BOS21:50Boston Logan Intl
18h 35m
2 stops
LHR21:25London Heathrow
10 Nov
LHR20:05London Heathrow
29h 15m
1 stop
BOS20:20Boston Logan Intl
£355
Find similar
SWISS
27 Oct
BOS22:50Boston Logan Intl
10h 10m
1 stop
LHR13:00London Heathrow
10 Nov
LHR12:05London Heathrow
13h 15m
1 stop
BOS20:20Boston Logan Intl
£360
Find similar
SWISS
16 Oct
BOS21:40Boston Logan Intl
15h 10m
1 stop
LHR17:50London Heathrow
22 Oct
LHR08:40London Heathrow
11h 45m
1 stop
BOS15:25Boston Logan Intl
£360
Find similar

Virgin Atlantic flights from Maine to London Heathrow Airport

Our best Virgin Atlantic deals on Maine to London Heathrow Airport flight tickets
Virgin Atlantic
24 Oct
BOS19:05Boston Logan Intl
6h 40m
LHR06:45London Heathrow
1 Nov
LHR13:05London Heathrow
7h 55m
BOS17:00Boston Logan Intl
£364
Find similar
Virgin Atlantic
11 Oct
BOS22:45Boston Logan Intl
6h 45m
LHR10:30London Heathrow
17 Oct
LHR18:15London Heathrow
7h 45m
BOS21:00Boston Logan Intl
£366
Find similar
Virgin Atlantic
11 Oct
BOS17:00Boston Logan Intl
12h 15m
1 stop
LHR10:15London Heathrow
17 Oct
LHR18:15London Heathrow
7h 45m
BOS21:00Boston Logan Intl
£368
Find similar

momondo Fare Finder

 
Customise 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 279,928 searches. Data last updated 10 October 2025.
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

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Tue 2/12

18:40-07:10

1 stop31h 30m

London Heathrow

Fri 5/12

06:35-18:35

1 stop17h 00m

£354

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Sat 8/11

21:50-21:25

2 stops18h 35m

London Heathrow

Mon 10/11

20:05-20:20

1 stop29h 15m

£355

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Mon 3/11

16:20-17:05

2 stops19h 45m

London Heathrow

Wed 5/11

06:50-14:52

2 stops13h 02m

£356

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Wed 26/11

10:15-09:20

2 stops18h 05m

London Heathrow

Mon 1/12

19:25-14:05

1 stop23h 40m

£357

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Wed 12/11

15:40-07:10

1 stop10h 30m

London Heathrow

Sun 16/11

09:00-20:20

1 stop16h 20m

£357

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Sun 26/10

21:40-15:50

1 stop14h 10m

London Heathrow

Sun 2/11

08:45-18:35

1 stop14h 50m

£358

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Mon 10/11

15:40-07:10

1 stop10h 30m

London Heathrow

Sun 16/11

09:00-20:20

1 stop16h 20m

£359

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Mon 27/10

22:50-13:00

1 stop10h 10m

London Heathrow

Mon 10/11

12:05-20:20

1 stop13h 15m

£360

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Tue 28/10

20:25-09:15

1 stop8h 50m

London Heathrow

Sun 2/11

10:00-16:50

1 stop11h 50m

£362

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Sun 8/3

18:10-08:05

1 stop9h 55m

London Heathrow

Sun 15/3

10:00-17:50

1 stop11h 50m

£366

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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?

In general, January is the cheapest month to fly from Maine to London Heathrow Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £414. The month of October is another great option to travel to London Heathrow Airport, with average flight prices from Maine averaging around £428.

What is the cheapest day to depart on your flight to London Heathrow Airport?

On average, the least expensive day to fly to London Heathrow Airport from Maine is on a Monday. momondo users have found tickets for Monday departures for as low as £487. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Saturday as prices are generally higher than usual. According to our data, the average ticket price to London Heathrow Airport on Saturday is £582.

What is the cheapest time of day to depart on your flight to London Heathrow Airport?

According to our data, the cheapest time of day to fly to London Heathrow Airport is in the evening. momondo users have found flights departing from Maine to London Heathrow Airport in the evening for as low as £508. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are £642 on average. Flights to London Heathrow Airport from Maine in the afternoon are generally more expensive because this time of day is more convenient for travellers’ schedules.

How far in advance should I book a flight to London Heathrow Airport?

You are more likely to see cheaper flights to London Heathrow Airport from Maine when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around £478 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London Heathrow Airport from Maine for as low as £449 on momondo.

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.
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  • 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 that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check 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 travel and health documents required for your trip to London Heathrow Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at London Heathrow Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Eastbourne
Milton Keynes
Luton
Maidstone
Gatwick
Northampton
Slough
Swindon
Canterbury
Stratford-upon-Avon
Southend-on-Sea
Ipswich
Ilford
Guildford
Poole
Swanage
Colchester
Dover
Hayes
Chelmsford

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?

momondo does allow users to show only those flights to London from Maine which offer a flexible booking policy as well as other useful filters and features.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Maine to London.

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

Of course. momondo tracks the price of Maine to London flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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