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

On average, it takes 10h 35m to fly from Maine to London Heathrow Airport if you fly out of Portland (the most popular airport in Maine) and into London Heathrow Airport (the most popular airport in London Heathrow Airport). If you’re flying out of Bangor and into London Heathrow Airport, then the flight time is around 10h 49m.

What airlines fly to London Heathrow Airport?

United Airlines, Delta and American Airlines are the top three most popular airlines that fly to London Heathrow Airport from Maine according to our data. United Airlines is the first choice among our users, with 47% of people opting to fly with this airline when traveling to London Heathrow Airport. Keep in mind that there are 4 different airlines that fly to London Heathrow Airport on a routine basis, so you have a few additional options to choose from.

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

The number of flights available between Maine and London Heathrow Airport is 220 per week as of August 2025. The most frequent departure day is Tue, with 16% of weekly flights leaving on this day.

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

JetBlue, Virgin Atlantic, and Lufthansa are the most popular carriers operating from Maine to London Heathrow

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?

There are 18 operators available for flights from Maine to London Heathrow Airport as of August 2025.

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.

$172 Cheap Flights from Maine to London Heathrow Airport in 2025

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Find the cheapest flights from Maine to London

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

5:10 pm - 9:40 pmBOS-LHR

23h 30m1 stop

10:25 am - 1:50 pmLHR-BOS

32h 25m1 stop

$277Austrian Airlines

Find Deal

Wed, Oct 1 - Sun, Oct 5

6:30 pm - 9:35 amBOS-LHR

10h 05m1 stop

8:40 am - 3:25 pmLHR-BOS

11h 45m1 stop

$349Lufthansa

Find Deal

Mon, Sep 22 - Wed, Sep 24

6:30 pm - 10:10 amBOS-LHR

10h 40m1 stop

6:50 am - 2:30 pmLHR-BOS

12h 40m2 stops

$352

Find Deal

Mon, Sep 22 - Wed, Sep 24

8:02 pm - 11:25 amBOS-LHR

10h 23m1 stop

6:50 am - 2:30 pmLHR-BOS

12h 40m2 stops

$353

Find Deal

Wed, Sep 10 - Fri, Sep 12

7:40 pm - 7:20 amBOS-LHR

6h 40mnonstop

6:10 am - 3:00 pmLHR-BOS

13h 50m1 stop

$366British Airways

Find Deal

Fri, Sep 19 - Sun, Sep 21

6:30 pm - 9:35 amBOS-LHR

10h 05m1 stop

9:30 am - 2:30 pmLHR-BOS

10h 00m1 stop

$367Air Canada

Find Deal

Mon, Sep 8 - Wed, Sep 10

8:10 pm - 7:50 amBOS-LHR

6h 40mnonstop

8:50 pm - 9:15 pmLHR-BOS

29h 25m1 stop

$368Iberia

Find Deal

Mon, Sep 1 - Tue, Sep 2

4:30 pm - 7:45 amBOS-LHR

10h 15m1 stop

6:10 am - 3:00 pmLHR-BOS

13h 50m1 stop

$370British Airways

Find Deal

Fri, Sep 5 - Sun, Sep 7

12:15 pm - 9:35 amBOS-LHR

16h 20m2 stops

6:50 am - 2:30 pmLHR-BOS

12h 40m2 stops

$371Air Canada

Find Deal

Mon, Sep 22 - Wed, Sep 24

8:05 pm - 7:50 amBOS-LHR

6h 45mnonstop

6:45 pm - 7:50 pmLHR-BOS

30h 05m1 stop

$373Iberia

Find Deal

Wed, Sep 3 - Thu, Sep 4

British Airways flights from Maine to London Heathrow Airport

Our best British Airways deals on Maine to London Heathrow Airport flight tickets

British Airways

Sep 19

BOS7:40 pmBoston Logan Intl

6h 40m

LHR7:20 amLondon Heathrow

Sep 21

LHR6:10 amLondon Heathrow

13h 50m

1 stop

BOS3:00 pmBoston Logan Intl

$366

Find similar

British Airways

Sep 5

BOS4:30 pmBoston Logan Intl

10h 15m

1 stop

LHR7:45 amLondon Heathrow

Sep 7

LHR6:10 amLondon Heathrow

13h 50m

1 stop

BOS3:00 pmBoston Logan Intl

$370

Find similar

British Airways

Sep 22

BOS10:00 pmBoston Logan Intl

6h 35m

LHR9:35 amLondon Heathrow

Sep 24

LHR6:15 amLondon Heathrow

18h 35m

1 stop

BOS7:50 pmBoston Logan Intl

$375

Find similar

TAP AIR PORTUGAL flights from Maine to London Heathrow Airport

Our best TAP AIR PORTUGAL deals on Maine to London Heathrow Airport flight tickets

TAP AIR PORTUGAL

Sep 22

BOS10:40 pmBoston Logan Intl

18h 20m

1 stop

LHR10:00 pmLondon Heathrow

Dec 14

LHR6:00 amLondon Heathrow

19h 10m

1 stop

BOS8:10 pmBoston Logan Intl

$424

Find similar

TAP AIR PORTUGAL

Oct 9

BOS10:25 pmBoston Logan Intl

14h 20m

1 stop

LHR5:45 pmLondon Heathrow

Oct 15

LHR6:00 amLondon Heathrow

13h 20m

1 stop

BOS2:20 pmBoston Logan Intl

$426

Find similar

TAP AIR PORTUGAL

Nov 14

BOS6:05 pmBoston Logan Intl

12h 20m

1 stop

LHR11:25 amLondon Heathrow

Nov 20

LHR6:00 amLondon Heathrow

13h 35m

1 stop

BOS2:35 pmBoston Logan Intl

$427

Find similar

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

Wed 10/1

5:10 pm-9:40 pm

1 stop23h 30m

London Heathrow

Sun 10/5

10:25 am-1:50 pm

1 stop32h 25m

$277

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Mon 9/22

6:30 pm-9:35 am

1 stop10h 05m

London Heathrow

Wed 9/24

8:40 am-3:25 pm

1 stop11h 45m

$349

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Mon 9/22

6:30 pm-10:10 am

1 stop10h 40m

London Heathrow

Wed 9/24

6:50 am-2:30 pm

2 stops12h 40m

$352

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Wed 9/10

8:02 pm-11:25 am

1 stop10h 23m

London Heathrow

Fri 9/12

6:50 am-2:30 pm

2 stops12h 40m

$353

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Fri 9/19

7:40 pm-7:20 am

Nonstop6h 40m

London Heathrow

Sun 9/21

6:10 am-3:00 pm

1 stop13h 50m

$366

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Mon 9/8

6:30 pm-9:35 am

1 stop10h 05m

London Heathrow

Wed 9/10

9:30 am-2:30 pm

1 stop10h 00m

$367

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Mon 9/1

8:10 pm-7:50 am

Nonstop6h 40m

London Heathrow

Tue 9/2

8:50 pm-9:15 pm

1 stop29h 25m

$368

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Fri 9/5

4:30 pm-7:45 am

1 stop10h 15m

London Heathrow

Sun 9/7

6:10 am-3:00 pm

1 stop13h 50m

$370

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Mon 9/22

12:15 pm-9:35 am

2 stops16h 20m

London Heathrow

Wed 9/24

6:50 am-2:30 pm

2 stops12h 40m

$371

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Wed 9/3

8:05 pm-7:50 am

Nonstop6h 45m

London Heathrow

Thu 9/4

6:45 pm-7:50 pm

1 stop30h 05m

$373

Flights are sorted by cheapest round-trip 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?

The month of April is, on average, the cheapest month to fly to London Heathrow Airport from Maine, with most prices found around $721. If you’re not able to fly to London Heathrow Airport in April, then May is your next best option. Flight prices from Maine to London Heathrow Airport during May average around $750.

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

Our data shows that Sunday is the least expensive day to fly to London Heathrow Airport. Tickets to fly out on this day can be as low as $852. The most expensive day to fly to London Heathrow Airport is Wednesday, with ticket prices averaging around $1,003.

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 afternoon. momondo users have found flights departing from Maine to London Heathrow Airport in the afternoon for as low as $842. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights in the morning are often more expensive with an average ticket price of $931.

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

Best Price Found	$172
Fastest flight time	6h 30m
Direct flights	Every day

The best one-way flight to London Heathrow Airport from Maine in the past 72 hours is $172. The best round-trip flight deal from Maine to London Heathrow Airport found on momondo in the last 72 hours is $277.

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?
There are 18 operators available for flights from Maine to London Heathrow Airport as of August 2025.
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
JetBlue	PriceFrom $586	Free Cancellation	Rating 7.2 2,915 reviews	Search JetBlue flights
United Airlines	PriceFrom $611	Free Cancellation	Rating 7.4 8,917 reviews	Search United Airlines flights
American Airlines	PriceFrom $810	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Delta	PriceFrom $825	Free Cancellation	Rating 8.0 7,985 reviews	Search Delta flights

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Slough

Luton

Guildford

Milton Keynes

Dartford

Crawley

Hayes

Chelmsford

Stansted

Salisbury

Ilford

Brentwood

Colchester

Stratford-upon-Avon

Folkestone

Swindon

Watford

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

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

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Cheap flights from Maine to London from $172

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 8/21. 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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Find the cheapest flights from Maine to London

Cheap round-trip flights

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British Airways flights from Maine to London Heathrow Airport

Our best British Airways deals on Maine to London Heathrow Airport flight tickets

TAP AIR PORTUGAL flights from Maine to London Heathrow Airport

Our best TAP AIR PORTUGAL 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

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?

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

Our data shows that Sunday is the least expensive day to fly to London Heathrow Airport. Tickets to fly out on this day can be as low as $852. The most expensive day to fly to London Heathrow Airport is Wednesday, with ticket prices averaging around $1,003.

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

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

JetBlue, Virgin Atlantic, and Lufthansa are the most popular carriers operating from Maine to London Heathrow

What airlines fly to London Heathrow Airport?

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

The number of flights available between Maine and London Heathrow Airport is 220 per week as of August 2025. The most frequent departure day is Tue, with 16% of weekly flights leaving on this day.

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

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

Best Price Found

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?

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

Traveling 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, organize 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