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

If you’re flying from a popular airport in Maine, such as Portland or Bangor, and flying into London Heathrow Airport, then you can expect flight times to average 10h 45m and 11h 15m, respectively.

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

59 flights are operational weekly from Maine to London Heathrow Airport as of March 2026. The most popular departure day for this route is Sat, with 53% 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 March 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.

£174 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

Direct

Cheap return flights

Enter your travel dates to find the best prices.

20:50 - 11:55

BOS

LHR

10h 05m

1 stop

21:25 - 21:45

LHR

BOS

29h 20m

1 stop

£395Icelandair

Wed, 22 Apr - Wed, 29 Apr

23:50 - 09:10

BOS

LHR

28h 20m

1 stop

20:50 - 22:05

LHR

BOS

30h 15m

1 stop

£410LEVEL

Sun, 20 Sep - Sat, 26 Sep

22:50 - 09:10

BOS

LHR

29h 20m

1 stop

20:50 - 21:05

LHR

BOS

29h 15m

1 stop

£413LEVEL

Mon, 4 May - Thu, 7 May

18:40 - 06:30

BOS

LHR

30h 50m

1 stop

06:00 - 19:55

LHR

BOS

18h 55m

1 stop

£419Multiple Airlines

Tue, 14 Apr - Fri, 17 Apr

06:00 - 21:35

PWM

LHR

10h 35m

1 stop

17:50 - 17:44

LHR

PWM

28h 54m

2 stops

£532United Airlines

Mon, 24 Aug - Tue, 25 Aug

15:44 - 10:40

PWM

LHR

13h 56m

2 stops

17:50 - 17:44

LHR

PWM

28h 54m

2 stops

£536United Airlines

Mon, 24 Aug - Tue, 25 Aug

14:51 - 10:20

PWM

LHR

14h 29m

1 stop

06:30 - 00:46

LHR

PWM

23h 16m

2 stops

£543Delta

Fri, 24 Apr - Fri, 1 May

17:02 - 10:20

BGR

LHR

12h 18m

1 stop

06:30 - 16:19

LHR

BGR

14h 49m

2 stops

£543KLM

Sat, 25 Apr - Sat, 2 May

16:43 - 14:35

PWM

LHR

16h 52m

2 stops

06:30 - 23:23

LHR

PWM

21h 53m

2 stops

£546Delta

Fri, 24 Apr - Fri, 1 May

14:51 - 08:50

PWM

LHR

12h 59m

1 stop

11:20 - 00:43

LHR

PWM

18h 23m

1 stop

£552KLM

Wed, 6 May - Mon, 11 May

LEVEL flights from Maine to London Heathrow Airport

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

LEVEL

20 Sept

BOS23:50Boston Logan Intl

28h 20m

1 stop

LHR09:10London Heathrow

26 Sept

LHR20:50London Heathrow

30h 15m

1 stop

BOS22:05Boston Logan Intl

£410

LEVEL

4 May

BOS22:50Boston Logan Intl

29h 20m

1 stop

LHR09:10London Heathrow

7 May

LHR20:50London Heathrow

29h 15m

1 stop

BOS21:05Boston Logan Intl

£413

LEVEL

21 Sept

BOS23:00Boston Logan Intl

29h 10m

1 stop

LHR09:10London Heathrow

29 Sept

LHR20:50London Heathrow

29h 25m

1 stop

BOS21:15Boston Logan Intl

£413

SWISS flights from Maine to London Heathrow Airport

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

SWISS

7 Apr

BOS21:40Boston Logan Intl

29h 15m

1 stop

LHR07:55London Heathrow

14 Apr

LHR08:45London Heathrow

11h 25m

1 stop

BOS15:10Boston Logan Intl

£496

SWISS

31 Mar

BOS17:20Boston Logan Intl

9h 35m

1 stop

LHR07:55London Heathrow

4 Apr

LHR20:05London Heathrow

28h 50m

1 stop

BOS19:55Boston Logan Intl

£497

SWISS

29 Mar

BOS21:40Boston Logan Intl

10h 20m

1 stop

LHR13:00London Heathrow

4 Apr

LHR13:50London Heathrow

11h 05m

1 stop

BOS19:55Boston Logan Intl

£506

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

Cheapest return flight

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Wed 22/4

20:50-11:55

1 stop10h 05m

London Heathrow

Wed 29/4

21:25-21:45

1 stop29h 20m

£395

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Sun 20/9

23:50-09:10

1 stop28h 20m

London Heathrow

Sat 26/9

20:50-22:05

1 stop30h 15m

£410

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Mon 4/5

22:50-09:10

1 stop29h 20m

London Heathrow

Thu 7/5

20:50-21:05

1 stop29h 15m

£413

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Tue 14/4

18:40-06:30

1 stop30h 50m

London Heathrow

Fri 17/4

06:00-19:55

1 stop18h 55m

£419

PortlandLondon

PWM - LHR

PWMLHR

Portland

Mon 24/8

06:00-21:35

1 stop10h 35m

London Heathrow

Tue 25/8

17:50-17:44

2 stops28h 54m

£532

PortlandLondon

PWM - LHR

PWMLHR

Portland

Mon 24/8

15:44-10:40

2 stops13h 56m

London Heathrow

Tue 25/8

17:50-17:44

2 stops28h 54m

£536

PortlandLondon

PWM - LHR

PWMLHR

Portland

Fri 24/4

14:51-10:20

1 stop14h 29m

London Heathrow

Fri 1/5

06:30-00:46

2 stops23h 16m

£543

Fastest return journey

BangorLondon

BGR - LHR

BGRLHR

Bangor

Sat 25/4

17:02-10:20

1 stop12h 18m

London Heathrow

Sat 2/5

06:30-16:19

2 stops14h 49m

£543

PortlandLondon

PWM - LHR

PWMLHR

Portland

Fri 24/4

16:43-14:35

2 stops16h 52m

London Heathrow

Fri 1/5

06:30-23:23

2 stops21h 53m

£546

PortlandLondon

PWM - LHR

PWMLHR

Portland

Wed 6/5

14:51-08:50

1 stop12h 59m

London Heathrow

Mon 11/5

11:20-00:43

1 stop18h 23m

£552

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

Airlines

Other information

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

LEVEL, KLM, and American Airlines are the most popular carriers operating from Maine to London Heathrow

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 March 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

Maidstone

Slough

Stratford-upon-Avon

Northampton

Swindon

Southend-on-Sea

Ipswich

Wembley

Canterbury

Ilford

Guildford

Poole

Hayes

Chelmsford

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.