How long is the flight from Maine to London Heathrow Airport?

Airlines like United Airlines fly from Maine to London Heathrow Airport in about 21h 26m. The time it takes to get you to your destination can typically vary by up to . Maine and London Heathrow Airport are separated by a distance of 3173 mi.

What are the cheapest airlines to fly from Maine to London Heathrow Airport one-way?

£90 is the cheapest one-way deal found within the past few days, from Air France. You may also be able to find cheap deals on Aegean Airlines and Egyptair, with prices starting from £98 and £164, respectively.

In terms of precipitation, rainfall in London Heathrow Airport ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London Heathrow Airport when rainfall is around 40.0 mm.

If weather is an important factor for your trip to London Heathrow Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

What are the most popular routes from Maine to London Heathrow Airport?

The most popular flight routes from Maine to London Heathrow Airport are Boston Logan Intl - London Heathrow, Portland - London Heathrow and Bangor - London Heathrow.

What is the cheapest time of day to fly from ME to LHR?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Maine to London Heathrow Airport as you normally would.

Can I find deals for flights from Maine to Heathrow that include hotel bookings?

Yes. In addition to deals on Maine to Heathrow flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from Maine to Heathrow?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Maine to Heathrow.

Can I find deals for business class flights from Maine to Heathrow?

Yes. Cheapflights offers flight deals from Maine to Heathrow by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

£242+ Cheap Flights from Maine to London Heathrow Airport

Cheap flight deals from Maine to Heathrow

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

One-way

Cheapest flights from Maine to Heathrow
Explore the most affordable flight options available from Maine to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 9 October 2026.

Mon 16/1115:41 -

2 stops19h 39m

Wed 18/1109:00 -

2 stops43h 21m

Deal found 5/10£555

Sun 1/1117:08 -

1 stop33h 47m

Wed 4/1106:50 -

2 stops21h 31m

Deal found 7/10£561

Mon 16/1111:00 -

1 stop16h 25m

Wed 18/1106:50 -

2 stops32h 29m

Deal found 7/10£561

Thu 12/1105:50 -

2 stops44h 20m

Sun 15/1106:50 -

2 stops31h 10m

Deal found 8/10£563

Sat 7/1106:00 -

2 stops19h 30m

Sat 14/1112:05 -

2 stops16h 16m

Deal found 8/10£652

Sat 7/1110:50 -

1 stop17h 20m

Sun 15/1106:50 -

2 stops31h 10m

Deal found 5/10£653

Fri 9/1006:04 -

1 stop19h 41m

Wed 14/1006:30 -

2 stops22h 40m

Deal found 8/10£654

Thu 5/1116:10 -

1 stop10h 05m

Thu 12/1106:30 -

2 stops37h 35m

Deal found 8/10£654

Fri 9/1006:04 -

1 stop20h 11m

Tue 13/1006:30 -

2 stops22h 40m

Deal found 8/10£655

Sun 18/1014:40 -

1 stop17h 35m

Thu 12/1117:50 -

2 stops26h 15m

Deal found 8/10£655

Thu 12/1114:05 -

2 stops14h 05m

Mon 16/1112:05 -

2 stops16h 16m

Deal found 8/10£656

Fri 23/1009:25 -

1 stop16h 20m

Thu 5/1109:00 -

2 stops30h 19m

Deal found 8/10£657

Best flights from Maine to Heathrow
Discover carefully curated flight deals from Maine to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 9 October 2026.

Mon 16/1108:49 -

2 stops21h 26m

Wed 18/1109:00 -

2 stops43h 21m

Deal found 8/10£555

Wed 18/1114:05 -

1 stop12h 45m

Wed 25/1108:40 -

2 stops19h 51m

Deal found 4/10£653

Wed 28/1016:10 -

2 stops15h 30m

Wed 4/1117:05 -

2 stops27h 25m

Deal found 7/10£657

Fri 23/1016:10 -

1 stop11h 40m

Thu 5/1117:50 -

2 stops26h 40m

Deal found 5/10£659

Sun 1/1117:08 -

1 stop33h 47m

Wed 4/1106:50 -

2 stops21h 31m

Deal found 4/10£561

Mon 16/1111:00 -

1 stop16h 25m

Wed 18/1106:50 -

2 stops32h 29m

Deal found 8/10£561

Thu 5/1116:10 -

2 stops16h 35m

Thu 12/1108:40 -

2 stops35h 25m

Deal found 8/10£657

Fri 23/1016:10 -

1 stop11h 40m

Thu 5/1114:45 -

2 stops29h 45m

Deal found 4/10£670

Thu 12/1108:49 -

1 stop16h 31m

Mon 16/1112:05 -

2 stops16h 16m

Deal found 8/10£652

Thu 5/1105:50 -

1 stop9h 45m

Sun 15/1109:00 -

2 stops19h 21m

Deal found 6/10£652

Wed 18/1117:08 -

1 stop13h 52m

Wed 25/1106:50 -

2 stops21h 31m

Deal found 4/10£653

Sat 7/1110:50 -

1 stop17h 20m

Sun 15/1106:50 -

2 stops31h 10m

Deal found 5/10£653

Fri 23/1009:25 -

1 stop16h 20m

Thu 5/1109:00 -

2 stops30h 19m

Deal found 8/10£657

Wed 17/207:11 -

2 stops32h 49m

Mon 22/206:50 -

2 stops19h 28m

Deal found 8/10£662

Find flight deals from Maine to Heathrow

Round-trip from	£555
One-way from	£242
Popular in	July
Cheapest in	February
Average price	£710

United Airlines
16/11-18/11
4 total stops
63h 00m total
Maine to London

Search Deals

JetBlue
7/11-31/12
1 total stop
10h 10m total
Maine to London

Search Deals

Highest demand for flights based on searches. 17% potential increase in price (£105 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 5% potential price decrease (£26 potential savings vs. average return price).

Search Deals

Average for round-trip flights in October 2026

Search Deals

Cheapflights 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

Fastest return journey

PortlandLondon

PWM Portland - LHR London Heathrow

PWMLHR

Portland

Sat 7/11

06:30-21:40

1 stop10h 10m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£242

PortlandLondon

PWM Portland - LHR London Heathrow

PWMLHR

Portland

Wed 11/11

06:30-21:40

1 stop10h 10m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£242

BangorLondon

BGR Bangor - LHR London Heathrow

BGRLHR

Bangor

Mon 15/3

17:55-12:30

2 stops14h 35m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£248

PortlandLondon

PWM Portland - LHR London Heathrow

PWMLHR

Portland

Wed 17/2

14:35-10:30

1 stop14h 55m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£249

PortlandLondon

PWM Portland - LHR London Heathrow

PWMLHR

Portland

Wed 11/11

08:49-05:55

2 stops16h 06m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£249

PortlandLondon

PWM Portland - LHR London Heathrow

PWMLHR

Portland

Wed 17/2

15:15-10:50

2 stops14h 35m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£249

BangorLondon

BGR Bangor - LHR London Heathrow

BGRLHR

Bangor

Mon 15/3

06:30-07:55

2 stops21h 25m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£249

PortlandLondon

PWM Portland - LHR London Heathrow

PWMLHR

Portland

Sat 7/11

08:49-06:30

3 stops16h 41m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£255

PortlandLondon

PWM Portland - LHR London Heathrow

PWMLHR

Portland

Wed 17/2

08:55-08:30

3 stops18h 35m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£255

PortlandLondon

PWM Portland - LHR London Heathrow

PWMLHR

Portland

Wed 11/11

08:49-07:10

3 stops17h 21m

London Heathrow

Wed 31/12

00:00-18:00

Nonstop0h 00m

£258

Flights are sorted by cheapest return flights first.

Deals found on 7/10

Showing 1-10 of 27 resultsSorted by cheapest first

Best time to book a flight from Maine to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Maine with our price prediction graph.

PWM-LHR

BGR-LHR

Estimated return price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Maine to London Heathrow Airport

USME-LHR

PWM-LHR

BGR-LHR

No data available for this route at this time. Please check back soon.

Related info for your journey

How long is the flight from Maine to London Heathrow Airport?
Airlines like United Airlines fly from Maine to London Heathrow Airport in about 21h 26m. The time it takes to get you to your destination can typically vary by up to . Maine and London Heathrow Airport are separated by a distance of 3173 mi.
What are the cheapest airlines to fly from Maine to London Heathrow Airport one-way?
£90 is the cheapest one-way deal found within the past few days, from Air France. You may also be able to find cheap deals on Aegean Airlines and Egyptair, with prices starting from £98 and £164, respectively.
What are the most popular routes from Maine to London Heathrow Airport?
The most popular flight routes from Maine to London Heathrow Airport are Boston Logan Intl - London Heathrow, Portland - London Heathrow and Bangor - London Heathrow.
Can I find deals for flights from Maine to Heathrow that include hotel bookings?
Yes. In addition to deals on Maine to Heathrow flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Maine to Heathrow?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Maine to Heathrow.
Can I find deals for business class flights from Maine to Heathrow?
Yes. Cheapflights offers flight deals from Maine to Heathrow by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

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How does Cheapflights help users find flights from Maine to Heathrow?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Heathrow from Maine today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from Maine to Heathrow?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Maine to Heathrow for you. Better yet — we are completely free to use.

Can Cheapflights find flights from Maine to Heathrow with no change fees?

Certainly. Search results for flights to Heathrow from Maine shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Maine to Heathrow become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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Cheap flights from Maine to London Heathrow Airport from £242

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/11. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Maine to Heathrow

Cheapest flights from Maine to HeathrowExplore the most affordable flight options available from Maine to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 9 October 2026.

Explore the most affordable flight options available from Maine to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 9 October 2026.

Best flights from Maine to HeathrowDiscover carefully curated flight deals from Maine to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 9 October 2026.

Discover carefully curated flight deals from Maine to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 9 October 2026.

Last-minute flights from Maine to HeathrowDiscover last-minute flight deals from Maine to Heathrow. Data last updated 9 October 2026 and is based on user searches.

Discover last-minute flight deals from Maine to Heathrow. Data last updated 9 October 2026 and is based on user searches.

One-way flights from Maine to HeathrowSearch for one-way flight options from Maine to Heathrow. Find affordable one-way fares based on user searches. Data last updated 9 October 2026.

Search for one-way flight options from Maine to Heathrow. Find affordable one-way fares based on user searches. Data last updated 9 October 2026.

Find flight deals from Maine to Heathrow

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Related info for your journey

How long is the flight from Maine to London Heathrow Airport?

What are the cheapest airlines to fly from Maine to London Heathrow Airport one-way?

What are the most popular routes from Maine to London Heathrow Airport?

Can I find deals for flights from Maine to Heathrow that include hotel bookings?

How can I find direct flights from Maine to Heathrow?

Can I find deals for business class flights from Maine to Heathrow?

Travelling to a place near London Heathrow Airport?

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Maine to Heathrow

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Complete your trip

Complete your trip to Heathrow by adding a car hire and/or hotel booking to your travel itinerary.

Direct flights to England

Book a non-stop flight to one of these other cities located in England.

Search flights from Maine to Heathrow by cabin class

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Other flights to Heathrow

Explore flights to Heathrow departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 9 October 2026.

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Can Cheapflights notify me if prices for flights from Maine to Heathrow become cheaper?

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Cheapest flights from Maine to Heathrow
Explore the most affordable flight options available from Maine to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 9 October 2026.

Best flights from Maine to Heathrow
Discover carefully curated flight deals from Maine to Heathrow that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 9 October 2026.

Last-minute flights from Maine to Heathrow
Discover last-minute flight deals from Maine to Heathrow. Data last updated 9 October 2026 and is based on user searches.

One-way flights from Maine to Heathrow
Search for one-way flight options from Maine to Heathrow. Find affordable one-way fares based on user searches. Data last updated 9 October 2026.