What is the cheapest airline that flies from Maine to London Heathrow?

United Airlines, Air Canada, and KLM are the most popular carriers operating from Maine to London Heathrow

How long does it take to fly to London Heathrow Airport?

If you’re flying from a popular airport in Maine, such as Bangor or Portland, and flying into London Heathrow Airport, then you can expect flight times to average 9h 45m and 10h 20m, respectively.

How many flights depart from Maine to London Heathrow Airport on average per week?

213 flights are operational weekly from Maine to London Heathrow Airport as of February 2026. The most popular departure day for this route is Mon, with 15% of flights per week taking off on this day.

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?

The number of operators available for flights from Maine to London Heathrow Airport is 8 as of February 2026.

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.

£163 Cheap Flights from Maine to London Heathrow Airport in 2026

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Find the cheapest flights from Maine to London

Round-trip

One-way

Last minute

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Cheap return flights

Enter your travel dates to find the best prices.

19:25 - 09:15

BOS

LHR

8h 50m

1 stop

10:00 - 16:50

LHR

BOS

11h 50m

1 stop

£358Aer Lingus

Tue, 24 Feb - Fri, 27 Feb

19:25 - 09:15

BOS

LHR

8h 50m

1 stop

10:00 - 16:50

LHR

BOS

11h 50m

1 stop

£359Aer Lingus

Fri, 27 Feb - Sat, 7 Mar

20:50 - 20:20

BOS

LHR

18h 30m

1 stop

13:05 - 18:50

LHR

BOS

10h 45m

1 stop

£360Icelandair

Sun, 29 Mar - Fri, 1 May

16:35 - 06:30

BOS

LHR

32h 55m

1 stop

20:05 - 21:00

LHR

BOS

28h 55m

1 stop

£364Multiple Airlines

Fri, 6 Mar - Sun, 8 Mar

18:40 - 20:35

BOS

LHR

20h 55m

1 stop

18:40 - 20:20

LHR

BOS

30h 40m

1 stop

£364Multiple Airlines

Thu, 19 Feb - Tue, 24 Feb

23:00 - 11:55

BOS

LHR

31h 55m

1 stop

21:25 - 18:50

LHR

BOS

26h 25m

1 stop

£365Icelandair

Mon, 6 Apr - Sun, 12 Apr

06:00 - 21:20

PWM

LHR

10h 20m

1 stop

06:50 - 18:25

LHR

PWM

15h 35m

2 stops

£464United Airlines

Sat, 7 Mar - Tue, 10 Mar

06:35 - 21:20

BGR

LHR

9h 45m

1 stop

06:50 - 18:33

LHR

BGR

15h 43m

2 stops

£464United Airlines

Fri, 6 Mar - Fri, 13 Mar

16:48 - 08:45

PWM

LHR

11h 57m

1 stop

20:55 - 16:06

LHR

PWM

24h 11m

2 stops

£479KLM

Tue, 24 Mar - Tue, 31 Mar

14:30 - 13:50

PWM

LHR

19h 20m

2 stops

20:55 - 16:06

LHR

PWM

24h 11m

2 stops

£487KLM

Tue, 24 Mar - Tue, 31 Mar

Delta flights from Maine to London Heathrow Airport

Our best Delta deals on Maine to London Heathrow Airport flight tickets

Delta

18 Feb

BOS19:15Boston Logan Intl

6h 35m

LHR06:50London Heathrow

28 Feb

LHR06:20London Heathrow

12h 20m

1 stop

BOS13:40Boston Logan Intl

£379

Delta

1 Mar

BOS20:00Boston Logan Intl

6h 50m

LHR07:50London Heathrow

9 Mar

LHR06:20London Heathrow

12h 10m

1 stop

BOS14:30Boston Logan Intl

£380

Delta

13 Feb

BOS05:50Boston Logan Intl

20h 15m

1 stop

LHR07:05London Heathrow

18 Feb

LHR06:20London Heathrow

12h 20m

1 stop

BOS13:40Boston Logan Intl

£383

Air Canada flights from Maine to London Heathrow Airport

Our best Air Canada deals on Maine to London Heathrow Airport flight tickets

Air Canada

14 Feb

BOS18:40Boston Logan Intl

20h 55m

1 stop

LHR20:35London Heathrow

19 Feb

LHR09:00London Heathrow

29h 32m

2 stops

BOS09:32Boston Logan Intl

£375

Air Canada

24 Feb

BOS10:15Boston Logan Intl

15h 55m

1 stop

LHR07:10London Heathrow

3 Mar

LHR09:00London Heathrow

15h 12m

2 stops

BOS19:12Boston Logan Intl

£378

Air Canada

23 Feb

BOS15:35Boston Logan Intl

10h 35m

1 stop

LHR07:10London Heathrow

26 Feb

LHR06:50London Heathrow

17h 52m

2 stops

BOS19:42Boston Logan Intl

£383

momondo Fare Finder

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 24/2

19:25-09:15

1 stop8h 50m

London Heathrow

Fri 27/2

10:00-16:50

1 stop11h 50m

£358

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Fri 27/2

19:25-09:15

1 stop8h 50m

London Heathrow

Sat 7/3

10:00-16:50

1 stop11h 50m

£359

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Sun 29/3

20:50-20:20

1 stop18h 30m

London Heathrow

Fri 1/5

13:05-18:50

1 stop10h 45m

£360

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Fri 6/3

16:35-06:30

1 stop32h 55m

London Heathrow

Sun 8/3

20:05-21:00

1 stop28h 55m

£364

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Thu 19/2

18:40-20:35

1 stop20h 55m

London Heathrow

Tue 24/2

18:40-20:20

1 stop30h 40m

£364

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Mon 6/4

23:00-11:55

1 stop31h 55m

London Heathrow

Sun 12/4

21:25-18:50

1 stop26h 25m

£365

PortlandLondon

PWM - LHR

PWMLHR

Portland

Sat 7/3

06:00-21:20

1 stop10h 20m

London Heathrow

Tue 10/3

06:50-18:25

2 stops15h 35m

£464

BangorLondon

BGR - LHR

BGRLHR

Bangor

Fri 6/3

06:35-21:20

1 stop9h 45m

London Heathrow

Fri 13/3

06:50-18:33

2 stops15h 43m

£464

PortlandLondon

PWM - LHR

PWMLHR

Portland

Tue 24/3

16:48-08:45

1 stop11h 57m

London Heathrow

Tue 31/3

20:55-16:06

2 stops24h 11m

£479

PortlandLondon

PWM - LHR

PWMLHR

Portland

Tue 24/3

14:30-13:50

2 stops19h 20m

London Heathrow

Tue 31/3

20:55-16:06

2 stops24h 11m

£487

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

Other information

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

In general, October 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 £551. The month of January is another great option to travel to London Heathrow Airport, with average flight prices from Maine averaging around £573.

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

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?
The number of operators available for flights from Maine to London Heathrow Airport is 8 as of February 2026.
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.

Eastbourne

Milton Keynes

Luton

Gatwick

Slough

Maidstone

Northampton

Stratford-upon-Avon

Swindon

Southend-on-Sea

Canterbury

Ipswich

Ilford

Guildford

Poole

Chelmsford

Hayes

Wembley

Dover

Folkestone

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.

An easier way to manage your London Heathrow Airport trip

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Cheap flights from Maine to London from £163

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 19/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names, great deals

Big names, great deals

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Find the cheapest flights from Maine to London

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Delta flights from Maine to London Heathrow Airport

Our best Delta deals on Maine to London Heathrow Airport flight tickets

Air Canada flights from Maine to London Heathrow Airport

Our best Air Canada deals on Maine to London Heathrow Airport flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from Maine to London Heathrow Airport that are best for you.

See travel insights to London from

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

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

What is the cheapest airline that flies from Maine to London Heathrow?

United Airlines, Air Canada, and KLM are the most popular carriers operating from Maine to London Heathrow

How many flights depart from Maine to London Heathrow Airport on average per week?

213 flights are operational weekly from Maine to London Heathrow Airport as of February 2026. The most popular departure day for this route is Mon, with 15% of flights per week taking off on this day.

How long does it take to fly to London Heathrow Airport?

If you’re flying from a popular airport in Maine, such as Bangor or Portland, and flying into London Heathrow Airport, then you can expect flight times to average 9h 45m and 10h 20m, respectively.

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

Direct flights

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

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?

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

Travelling to a place near London?

Why use momondo?

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

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

How can momondo help me find flights 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?

An easier way to manage your London Heathrow Airport trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to London

Popular Cities in the United Kingdom

Popular flights according to clicks in the last 7 days on momondo

London Heathrow Airport flight routes

According to popular flight searches on momondo this year

Cabin classes currently available on flights to London

List of cabin classes available on flights landing in London. Availability may vary depending on flight origin and airline.

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