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Heathrow

$194+ Cheap flights from Maine to Heathrow (LHR)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/7. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — LHR
Jan 25 — Feb 11
Sun 1/25
Sun 2/1
1 adult, Economy
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Cheap flight deals from Maine to Heathrow

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 December 26, 2025.

This Kiwi.com deal was found by Cheapflights users on 12/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/317:44 pmBOS - LHR
1 stop10h 06mLufthansa
Thu 1/84:20 pmLHR - BOS
1 stop12h 29mLufthansa
Deal found 12/24$503
This Kiwi.com deal was found by Cheapflights users on 12/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/257:44 pmBOS - LHR
1 stop10h 06mLufthansa
Sun 12/2811:10 amLHR - BOS
1 stop12h 25mLufthansa
Deal found 12/24$504
This Kiwi.com deal was found by Cheapflights users on 12/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/257:44 pmBOS - LHR
1 stop10h 06mLufthansa
Mon 12/298:45 amLHR - BOS
1 stop14h 50mLufthansa
Deal found 12/24$505
This Cheapflightsfares deal was found by Cheapflights users on 12/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/317:44 pmBOS - LHR
1 stop10h 06mLufthansa
Fri 1/94:20 pmLHR - BOS
1 stop12h 29mLufthansa
Deal found 12/24$506
This Kiwi.com deal was found by Cheapflights users on 12/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/242:15 pmBOS - LHR
1 stop11h 25mAustrian Airlines
Sun 12/286:00 amLHR - BOS
1 stop13h 05mAustrian Airlines
Deal found 12/24$507
This KLM deal was found by Cheapflights users on 12/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/318:00 pmBOS - LHR
Nonstop6h 50mMultiple Airlines
Fri 1/236:20 amLHR - BOS
1 stop12h 20mMultiple Airlines
Deal found 12/24$508
This KLM deal was found by Cheapflights users on 12/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/317:10 pmBOS - LHR
Nonstop6h 40mMultiple Airlines
Thu 1/156:20 amLHR - BOS
1 stop12h 20mMultiple Airlines
Deal found 12/25$509
This Delta deal was found by Cheapflights users on 12/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/318:00 pmBOS - LHR
Nonstop6h 50mDelta
Sun 1/256:30 amLHR - BOS
1 stop17h 25mDelta
Deal found 12/24$510
This Kiwi.com deal was found by Cheapflights users on 12/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/257:44 pmBOS - LHR
1 stop10h 06mMultiple Airlines
Sun 12/286:00 amLHR - BOS
1 stop13h 05mMultiple Airlines
Deal found 12/24$511
This Kiwi.com deal was found by Cheapflights users on 12/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/252:15 pmBOS - LHR
1 stop11h 25mAustrian Airlines
Sat 12/277:25 pmLHR - BOS
1 stop23h 40mAustrian Airlines
Deal found 12/24$512
This Delta deal was found by Cheapflights users on 12/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/295:45 amBOS - LHR
1 stop20h 20mDelta
Fri 1/236:20 amLHR - BOS
1 stop15h 00mDelta
Deal found 12/24$513
This Delta deal was found by Cheapflights users on 12/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/317:10 pmBOS - LHR
Nonstop6h 40mDelta
Fri 1/99:40 amLHR - BOS
Nonstop7h 50mDelta
Deal found 12/24$514

Find flight deals from Maine to Heathrow

Keep the following information in mind while searching for Maine to Heathrow flight deals. Data was last updated December 26, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$501
(Gotogate)

One-way from

$194
(Mytrip)

Popular in

June

Cheapest in

October

Average price

$699
Provider with most accurate pricing for Portland-London (LON) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Portland-London (LON) flights.
Search Deals
From Maine to London Heathrow
Search Deals
One-way flight from Maine to London Heathrow
Search Deals
Highest demand for flights based on searches. 17% potential increase in price ($181 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($32 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Maine to Heathrow that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 26, 2025.
Use the filters below to find and compare flights from Maine to London Heathrow Airport that are best for you.

Fly from

Maine

Fly to

Heathrow

Route

Depart

Return

Price

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Sun 3/22

8:16 pm-6:55 am

Nonstop6h 39m

London Heathrow

Tue 3/31

8:40 am-11:14 am

Nonstop7h 34m

$505

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Sat 1/17

7:12 pm-6:55 am

Nonstop6h 43m

London Heathrow

Fri 1/23

9:20 am-12:16 pm

Nonstop7h 56m

$506

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Wed 2/11

7:12 pm-6:55 am

Nonstop6h 43m

London Heathrow

Wed 2/25

9:20 am-12:19 pm

Nonstop7h 59m

$506

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Mon 1/19

7:12 pm-6:55 am

Nonstop6h 43m

London Heathrow

Fri 1/23

9:20 am-12:16 pm

Nonstop7h 56m

$506

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Sat 2/7

7:22 pm-6:40 am

1 stop30h 18m

London Heathrow

Sat 2/21

3:00 pm-2:52 pm

1 stop28h 52m

$513

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Thu 1/15

6:40 pm-8:35 pm

1 stop20h 55m

London Heathrow

Mon 1/19

1:25 pm-1:13 pm

2 stops28h 48m

$513

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Wed 1/21

7:07 pm-6:40 am

1 stop30h 33m

London Heathrow

Sun 1/25

1:25 pm-2:52 pm

1 stop30h 27m

$514

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Wed 1/14

6:40 pm-8:35 pm

1 stop20h 55m

London Heathrow

Mon 1/19

1:25 pm-1:13 pm

2 stops28h 48m

$514

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Sat 1/31

8:00 pm-7:50 am

Nonstop6h 50m

London Heathrow

Thu 3/19

6:20 am-2:30 pm

1 stop12h 10m

$515

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Mon 1/19

5:30 am-7:10 am

1 stop20h 40m

London Heathrow

Fri 1/23

6:35 am-6:35 pm

1 stop17h 00m

$515

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/23

Showing 1-10 of 48 results
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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.
Estimated round-trip 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

What is the cheapest month to book a flight from Maine to London Heathrow Airport?

Currently, April is the cheapest month in which you can book a flight from Maine to London Heathrow Airport (average of $589). Flying from Maine to London Heathrow Airport in December is currently the most expensive (average of $1,472). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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

Find hourly flight availability from Maine to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 26, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 15% on flights from Maine to London Heathrow Airport by exploring options for tickets in the evening.

Related info for your journey

Find useful and relevant information for your journey from Maine to Heathrow. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    Departing from Maine to London Heathrow Airport will take you 6h 39m. Maine and London Heathrow Airport are separated by a distance of 3254 mi. This flight may include one or multiple stops.

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

    Most travelers choose Boston Logan Intl - London Heathrow, Portland - London Heathrow or Bangor - London Heathrow when deciding on the best route from Maine to London Heathrow Airport.

  • 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 vacation 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.

  • What is the cheapest month to book a flight from Maine to London Heathrow Airport?

    Currently, April is the cheapest month in which you can book a flight from Maine to London Heathrow Airport (average of $589). Flying from Maine to London Heathrow Airport in December is currently the most expensive (average of $1,472). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Ilford
Hounslow
Southend-on-Sea
Harrow
Eastleigh
Dartford
Dover
Winchester
Croydon
Hayes
Orpington
Northampton
Watford
Borehamwood
Broadway
Aylesbury
Chipping Norton
Horley
Kingston upon Thames
Folkestone

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Maine to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Heathrow flights
Newark to Heathrow flights
LaGuardia to Heathrow flights
John F Kennedy Intl to London City flights
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John F Kennedy Intl to Gatwick flights
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San Francisco to Heathrow flights
Dallas/Fort Worth to Heathrow flights
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John F Kennedy Intl to Luton flights
Atlanta to Heathrow flights
Miami to Heathrow flights
Boston to Gatwick flights
Newark to London City flights
Newark to Luton flights
Newark to Stansted flights
Orlando to Heathrow flights
Boston to London City flights
Dulles Intl to Gatwick flights
Reagan-National to Heathrow flights
Hobby to Heathrow flights
Denver to Heathrow flights
Philadelphia to Heathrow flights
Minneapolis to Heathrow flights
Los Angeles to Gatwick flights
O'Hare Intl to Gatwick flights
Dulles Intl to London City flights
Tampa to Heathrow flights
Baltimore to Gatwick flights
O'Hare Intl to London City flights
Austin to Heathrow flights
Dallas/Fort Worth to Gatwick flights
Dulles Intl to Stansted flights
Los Angeles to London City flights
Boston to Stansted flights
San Francisco to Gatwick flights
Detroit to Heathrow flights
Reagan-National to Gatwick flights
George Bush Intcntl to Heathrow flights
Raleigh to Heathrow flights
Miami to Gatwick flights
Orlando to Gatwick flights
Charlotte to Heathrow flights

Top 3 airlines flying from Maine to Heathrow

Discover the top 3 airlines that operate flights from Maine to Heathrow. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 26, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$648Average$874FlexibilityNo cancel feeOn-time69%
DeltaCheapest$765Average$1,083FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$786Average$872FlexibilityNo cancel feeOn-time71%

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