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Heathrow

$220+ 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 5/13. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — LHR
Mar 16 — Mar 231
Mon 3/16
Mon 3/23
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 February 14, 2026.

This ResecentrumGruppen deal was found by Cheapflights users on 2/13. 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 ResecentrumGruppen is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/156:40 pm
BOS
-
LHR
1 stop20h 55m
Multiple Airlines
Mon 2/239:05 am
LHR
-
BOS
1 stop34h 00m
Multiple Airlines
Deal found 2/13$486
This oojo deal was found by Cheapflights users on 2/13. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/88:50 pm
BOS
-
LHR
1 stop10h 05m
Icelandair
Mon 5/189:25 pm
LHR
-
BOS
1 stop26h 25m
Icelandair
Deal found 2/13$487
This oojo deal was found by Cheapflights users on 2/14. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/15:40 pm
BOS
-
LHR
1 stop17h 20m
Scandinavian Airlines
Sun 5/36:40 am
LHR
-
BOS
2 stops13h 55m
Scandinavian Airlines
Deal found 2/14$488
This Booking.com deal was found by Cheapflights users on 2/10. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/287:25 pm
BOS
-
LHR
1 stop8h 50m
Aer Lingus
Thu 3/510:00 am
LHR
-
BOS
1 stop11h 50m
Aer Lingus
Deal found 2/10$489
This Booking.com deal was found by Cheapflights users on 2/11. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/57:25 pm
BOS
-
LHR
1 stop8h 50m
Aer Lingus
Thu 3/1210:00 am
LHR
-
BOS
1 stop11h 50m
Aer Lingus
Deal found 2/11$490
This Kiwi.com deal was found by Cheapflights users on 2/11. 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 2/189:50 pm
BOS
-
LHR
1 stop10h 10m
SWISS
Wed 2/259:00 am
LHR
-
BOS
1 stop16h 20m
SWISS
Deal found 2/11$491
This oojo deal was found by Cheapflights users on 2/10. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/2911:00 pm
BOS
-
LHR
1 stop16h 20m
Icelandair
Fri 5/11:05 pm
LHR
-
BOS
1 stop13h 40m
Icelandair
Deal found 2/10$492
This Kiwi.com deal was found by Cheapflights users on 2/12. 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.
Sun 3/88:50 pm
BOS
-
LHR
1 stop10h 00m
Icelandair
Mon 4/201:05 pm
LHR
-
BOS
1 stop10h 45m
Icelandair
Deal found 2/12$493
This FlightHub deal was found by Cheapflights users on 2/13. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/27:25 pm
BOS
-
LHR
1 stop8h 50m
Aer Lingus
Sun 3/810:00 am
LHR
-
BOS
1 stop11h 50m
Aer Lingus
Deal found 2/13$495
This Icelandair deal was found by Cheapflights users on 2/10. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/148:50 pm
BOS
-
LHR
1 stop10h 05m
Icelandair
Tue 4/211:05 pm
LHR
-
BOS
1 stop10h 45m
Icelandair
Deal found 2/10$496
This Kiwi.com deal was found by Cheapflights users on 2/11. 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.
Sun 3/159:40 pm
BOS
-
LHR
1 stop14h 10m
Lufthansa
Thu 3/1911:10 am
LHR
-
BOS
1 stop12h 25m
Lufthansa
Deal found 2/11$497
This United Airlines deal was found by Cheapflights users on 2/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/117:07 pm
PWM
-
LHR
1 stop11h 18m
United Airlines
Wed 3/186:50 am
LHR
-
PWM
2 stops15h 35m
United Airlines
Deal found 2/11$633

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 February 14, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$486
(oojo)

One-way from

$220
(United Airlines)

Popular in

July

Cheapest in

October

Average price

$673
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. 20% potential increase in price ($218 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($36 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
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 February 14, 2026.
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

Thu 2/26

6:00 am-8:35 pm

1 stop9h 35m

London Heathrow

Wed 3/4

1:45 pm-8:20 pm

1 stop11h 35m

$510

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Sun 3/15

3:35 pm-7:10 am

1 stop11h 35m

London Heathrow

Wed 3/18

9:00 am-9:20 pm

1 stop16h 20m

$513

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Wed 3/11

3:35 pm-7:10 am

1 stop11h 35m

London Heathrow

Thu 3/19

9:00 am-9:20 pm

1 stop16h 20m

$513

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Sat 3/7

7:34 pm-6:40 am

1 stop30h 06m

London Heathrow

Sun 3/15

1:25 pm-9:32 am

1 stop24h 07m

$517

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Tue 3/10

8:10 pm-6:50 am

Nonstop6h 40m

London Heathrow

Mon 3/16

6:20 am-2:30 pm

1 stop12h 10m

$519

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Tue 3/3

7:10 pm-6:50 am

Nonstop6h 40m

London Heathrow

Sat 3/7

6:20 am-1:30 pm

1 stop12h 10m

$520

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Sun 3/1

8:00 pm-7:50 am

Nonstop6h 50m

London Heathrow

Fri 3/6

6:20 am-1:30 pm

1 stop12h 10m

$520

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Sat 2/28

7:15 pm-6:50 am

Nonstop6h 35m

London Heathrow

Fri 3/6

6:20 am-1:30 pm

1 stop12h 10m

$520

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Sun 3/8

9:00 pm-7:50 am

Nonstop6h 50m

London Heathrow

Wed 3/18

6:20 am-2:30 pm

1 stop12h 10m

$520

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Fri 3/20

9:00 pm-7:50 am

Nonstop6h 50m

London Heathrow

Tue 3/31

8:40 am-4:25 pm

1 stop12h 45m

$521

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/11

Showing 1-10 of 52 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 $597). 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.

How much does it cost to fly round-trip from Maine to London Heathrow Airport?

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 40m. 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, Bangor - London Heathrow or Portland - 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 $597). 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
Croydon
Hounslow
Southend-on-Sea
Harrow
Eastleigh
Gatwick
Dartford
Dover
Winchester
Orpington
Northampton
Watford
Hayes
Borehamwood
Broadway
Aylesbury
Chipping Norton
Horley
Kingston upon Thames

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.
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Boston to London City flights
Dulles Intl to London City flights
Denver to Heathrow flights
Dulles Intl to Stansted flights
Los Angeles to Gatwick flights
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Boston to Stansted flights
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Newark to Stansted flights
Philadelphia to Heathrow flights
Newark to Luton flights
Baltimore to Gatwick flights
Minneapolis to Heathrow flights
O'Hare Intl to Gatwick flights
Dallas/Fort Worth to Gatwick flights
Reagan-National to Gatwick flights
O'Hare Intl to London City flights
Tampa to Heathrow flights
San Francisco to Gatwick flights
Los Angeles to Stansted flights
O'Hare Intl to Stansted flights
Los Angeles to London City flights
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Seattle to Gatwick flights
Detroit 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 February 14, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$648Average$1,006FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$757Average$1,029FlexibilityNo cancel feeOn-time71%
DeltaCheapest$765Average$1,083FlexibilityNo cancel feeOn-timeN/A

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