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 216 per week as of October 2025. The most frequent departure day is Mon, with 14% of weekly flights leaving on this day.

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 41% of people opting to fly with this airline when traveling to London Heathrow Airport. Keep in mind that there are 3 different airlines that fly to London Heathrow Airport on a routine basis, so you have a few additional options to choose from.

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

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

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

On average, it takes 9h 40m 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 11h 55m.

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 17 operators available for flights from Maine to London Heathrow Airport as of October 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.

$212 Cheap Flights from Maine to London Heathrow Airport in 2025/26

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from Maine to London

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

3:15 pm - 8:10 amBOS-LHR

11h 55m1 stop

1:45 pm - 8:20 pmLHR-BOS

11h 35m1 stop

$473Multiple Airlines

Find Deal

Sat, Oct 25 - Mon, Nov 3

5:30 am - 8:35 pmBOS-LHR

11h 05m2 stops

12:05 pm - 8:20 pmLHR-BOS

13h 15m1 stop

$474Multiple Airlines

Find Deal

Tue, Oct 28 - Tue, Nov 4

8:50 pm - 10:50 amBOS-LHR

10h 00m1 stop

12:15 pm - 6:50 pmLHR-BOS

10h 35m1 stop

$476Icelandair

Find Deal

Sun, Oct 26 - Thu, Oct 30

10:50 pm - 5:50 pmBOS-LHR

15h 00m1 stop

12:05 pm - 8:20 pmLHR-BOS

13h 15m1 stop

$477SWISS

Find Deal

Tue, Oct 28 - Mon, Nov 17

10:50 pm - 1:00 pmBOS-LHR

10h 10m1 stop

5:10 pm - 9:20 pmLHR-BOS

32h 10m1 stop

$479SWISS

Find Deal

Sat, Oct 25 - Sat, Nov 1

7:25 pm - 9:15 amBOS-LHR

8h 50m1 stop

10:00 am - 4:50 pmLHR-BOS

11h 50m1 stop

$485Aer Lingus

Find Deal

Mon, Nov 10 - Sat, Nov 15

7:25 pm - 9:15 amBOS-LHR

8h 50m1 stop

10:00 am - 4:50 pmLHR-BOS

11h 50m1 stop

$488Aer Lingus

Find Deal

Sun, Nov 9 - Sat, Nov 15

9:50 pm - 11:15 amBOS-LHR

32h 25m1 stop

9:00 am - 5:50 pmLHR-BOS

13h 50m1 stop

$492United Airlines

Find Deal

Thu, Nov 13 - Sun, Nov 16

7:50 pm - 7:30 pmBOS-LHR

18h 40m1 stop

12:15 pm - 5:50 pmLHR-BOS

10h 35m1 stop

$493Icelandair

Find Deal

Wed, Feb 11 - Wed, Feb 25

10:15 am - 7:10 amBOS-LHR

15h 55m1 stop

9:00 am - 8:20 pmLHR-BOS

16h 20m1 stop

$497United Airlines

Find Deal

Wed, Nov 5 - Sun, Nov 9

Icelandair flights from Maine to London Heathrow Airport

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

Icelandair

Oct 26

BOS8:50 pmBoston Logan Intl

10h 00m

1 stop

LHR10:50 amLondon Heathrow

Oct 30

LHR12:15 pmLondon Heathrow

10h 35m

1 stop

BOS6:50 pmBoston Logan Intl

$476

Find similar

Icelandair

Feb 11

BOS7:50 pmBoston Logan Intl

18h 40m

1 stop

LHR7:30 pmLondon Heathrow

Feb 25

LHR12:15 pmLondon Heathrow

10h 35m

1 stop

BOS5:50 pmBoston Logan Intl

$493

Find similar

Icelandair

Oct 26

BOS8:50 pmBoston Logan Intl

10h 00m

1 stop

LHR10:50 amLondon Heathrow

Oct 31

LHR12:15 pmLondon Heathrow

10h 35m

1 stop

BOS6:50 pmBoston Logan Intl

$494

Find similar

SWISS flights from Maine to London Heathrow Airport

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

SWISS

Oct 28

BOS10:50 pmBoston Logan Intl

15h 00m

1 stop

LHR5:50 pmLondon Heathrow

Nov 17

LHR12:05 pmLondon Heathrow

13h 15m

1 stop

BOS8:20 pmBoston Logan Intl

$477

Find similar

SWISS

Oct 25

BOS10:50 pmBoston Logan Intl

10h 10m

1 stop

LHR1:00 pmLondon Heathrow

Nov 1

LHR5:10 pmLondon Heathrow

32h 10m

1 stop

BOS9:20 pmBoston Logan Intl

$479

Find similar

SWISS

Nov 11

BOS9:50 pmBoston Logan Intl

10h 10m

1 stop

LHR1:00 pmLondon Heathrow

Nov 17

LHR1:45 pmLondon Heathrow

11h 35m

1 stop

BOS8:20 pmBoston Logan Intl

$490

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

Sat 10/25

3:15 pm-8:10 am

1 stop11h 55m

London Heathrow

Mon 11/3

1:45 pm-8:20 pm

1 stop11h 35m

$473

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Tue 10/28

5:30 am-8:35 pm

2 stops11h 05m

London Heathrow

Tue 11/4

12:05 pm-8:20 pm

1 stop13h 15m

$474

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Sun 10/26

8:50 pm-10:50 am

1 stop10h 00m

London Heathrow

Thu 10/30

12:15 pm-6:50 pm

1 stop10h 35m

$476

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Tue 10/28

10:50 pm-5:50 pm

1 stop15h 00m

London Heathrow

Mon 11/17

12:05 pm-8:20 pm

1 stop13h 15m

$477

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Sat 10/25

10:50 pm-1:00 pm

1 stop10h 10m

London Heathrow

Sat 11/1

5:10 pm-9:20 pm

1 stop32h 10m

$479

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Mon 11/10

7:25 pm-9:15 am

1 stop8h 50m

London Heathrow

Sat 11/15

10:00 am-4:50 pm

1 stop11h 50m

$485

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Sun 11/9

7:25 pm-9:15 am

1 stop8h 50m

London Heathrow

Sat 11/15

10:00 am-4:50 pm

1 stop11h 50m

$488

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Thu 11/13

9:50 pm-11:15 am

1 stop32h 25m

London Heathrow

Sun 11/16

9:00 am-5:50 pm

1 stop13h 50m

$492

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Wed 2/11

7:50 pm-7:30 pm

1 stop18h 40m

London Heathrow

Wed 2/25

12:15 pm-5:50 pm

1 stop10h 35m

$493

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Wed 11/5

10:15 am-7:10 am

1 stop15h 55m

London Heathrow

Sun 11/9

9:00 am-8:20 pm

1 stop16h 20m

$497

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 January is, on average, the cheapest month to fly to London Heathrow Airport from Maine, with most prices found around $551. If you’re not able to fly to London Heathrow Airport in January, then October is your next best option. Flight prices from Maine to London Heathrow Airport during October average around $567.

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

Our data shows that Tuesday is the least expensive day to fly to London Heathrow Airport. Tickets to fly out on this day can be as low as $657. The most expensive day to fly to London Heathrow Airport is Saturday, with ticket prices averaging around $719.

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 at noon. momondo users have found flights departing from Maine to London Heathrow Airport at noon for as low as $656. 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 evening are often more expensive with an average ticket price of $693.

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 $637 when searching weeks out. 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 $599 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.

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 17 operators available for flights from Maine to London Heathrow Airport as of October 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
United Airlines	PriceFrom $648	Free Cancellation	Rating 7.4 8,970 reviews	Search United Airlines flights
American Airlines	PriceFrom $802	Free Cancellation	Rating 7.2 11,046 reviews	Search American Airlines flights
Delta	PriceFrom $825	Free Cancellation	Rating 7.9 7,971 reviews	Search Delta flights

Gatwick

Hounslow

Milton Keynes

Luton

Dover

Slough

Guildford

Dartford

Hayes

Crawley

Chelmsford

Brentwood

Salisbury

Colchester

Ilford

Folkestone

Romford

Swindon

Stratford-upon-Avon

Cobham

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.

Start using Trips

Find my bookings

Get notified when prices go down

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

1 adult

Wed 11/12

Wed 11/19

Email me momondo's favorite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to London

Popular cities in the United Kingdom

Flights to London Gatwick Airportfrom $315

Flights to London City Airportfrom $452

Flights to London Stansted Airportfrom $359

Flights to London Luton Airportfrom $357

Flights to Glasgow Intl Airportfrom $399

Flights to Belfast Intl Airportfrom $532

Flights to London Southend Airportfrom $437

Flights to Belfast City Airportfrom $532

Cheap flights from Maine to London from $212

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 3/12. 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 and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from Maine to London

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Cheap direct flights

Icelandair flights from Maine to London Heathrow Airport

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

SWISS flights from Maine to London Heathrow Airport

Our best SWISS 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 Tuesday is the least expensive day to fly to London Heathrow Airport. Tickets to fly out on this day can be as low as $657. The most expensive day to fly to London Heathrow Airport is Saturday, with ticket prices averaging around $719.

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

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

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

Virgin Atlantic, JetBlue, and Icelandair 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 216 per week as of October 2025. The most frequent departure day is Mon, with 14% 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

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