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$231+ 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 4/24. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — LHR
Apr 26 — May 31
Sun 4/26
Sun 5/3
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 March 27, 2026.

This Icelandair deal was found by Cheapflights users on 3/23. 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.
Wed 4/228:50 pm
BOS
-
LHR
1 stop10h 05m
Icelandair
Wed 4/299:25 pm
LHR
-
BOS
1 stop29h 20m
Icelandair
Deal found 3/23$525
This LEVEL deal was found by Cheapflights users on 3/27. 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 LEVEL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/1311:00 pm
BOS
-
LHR
1 stop16h 05m
LEVEL
Tue 10/208:50 pm
LHR
-
BOS
1 stop29h 25m
LEVEL
Deal found 3/27$540
This LEVEL deal was found by Cheapflights users on 3/26. 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 LEVEL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/2011:50 pm
BOS
-
LHR
1 stop28h 20m
LEVEL
Sat 9/268:50 pm
LHR
-
BOS
1 stop30h 15m
LEVEL
Deal found 3/26$545
This LEVEL deal was found by Cheapflights users on 3/23. 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 LEVEL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/410:50 pm
BOS
-
LHR
1 stop29h 20m
LEVEL
Thu 5/78:50 pm
LHR
-
BOS
1 stop29h 15m
LEVEL
Deal found 3/23$549
This LEVEL deal was found by Cheapflights users on 3/23. 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 LEVEL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2111:00 pm
BOS
-
LHR
1 stop29h 10m
LEVEL
Tue 9/298:50 pm
LHR
-
BOS
1 stop29h 25m
LEVEL
Deal found 3/23$550
This LEVEL deal was found by Cheapflights users on 3/24. 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 LEVEL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/2311:00 pm
BOS
-
LHR
1 stop16h 05m
LEVEL
Mon 9/288:50 pm
LHR
-
BOS
1 stop29h 25m
LEVEL
Deal found 3/24$551
This LEVEL deal was found by Cheapflights users on 3/23. 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 LEVEL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/2710:50 pm
BOS
-
LHR
1 stop16h 15m
LEVEL
Thu 5/78:50 pm
LHR
-
BOS
1 stop29h 15m
LEVEL
Deal found 3/23$555
This LEVEL deal was found by Cheapflights users on 3/24. 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 LEVEL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/2511:00 pm
BOS
-
LHR
1 stop16h 05m
LEVEL
Tue 9/298:50 pm
LHR
-
BOS
1 stop29h 25m
LEVEL
Deal found 3/24$556
This Booking.com deal was found by Cheapflights users on 3/24. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/146:40 pm
BOS
-
LHR
1 stop30h 50m
Multiple Airlines
Fri 4/176:00 am
LHR
-
BOS
1 stop18h 55m
Multiple Airlines
Deal found 3/24$557
This Cheapflightsfares deal was found by Cheapflights users on 3/23. 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.
Tue 4/149:40 pm
BOS
-
LHR
1 stop10h 20m
Multiple Airlines
Thu 4/1610:50 am
LHR
-
BOS
1 stop11h 50m
Multiple Airlines
Deal found 3/23$561
This Cheapflightsfares deal was found by Cheapflights users on 3/24. 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.
Mon 4/209:40 pm
BOS
-
LHR
1 stop10h 20m
Multiple Airlines
Wed 4/2210:50 am
LHR
-
BOS
1 stop11h 50m
Multiple Airlines
Deal found 3/24$562
This United Airlines deal was found by Cheapflights users on 3/23. 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.
Mon 8/246:00 am
PWM
-
LHR
1 stop10h 35m
United Airlines
Tue 8/255:50 pm
LHR
-
PWM
2 stops28h 54m
United Airlines
Deal found 3/23$708

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 March 27, 2026.

Round-trip from

$525
(Icelandair)

One-way from

$231
(LEVEL)

Popular in

July

Cheapest in

October

Average price

$859
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 ($177 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 March 2026
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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 March 27, 2026.
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 round-trip

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Thu 4/2

11:10 pm-10:40 am

Nonstop6h 30m

London Heathrow

Mon 4/6

9:55 am-4:25 pm

1 stop11h 30m

$701

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Sat 4/25

11:10 pm-10:40 am

Nonstop6h 30m

London Heathrow

Sun 5/17

8:40 am-4:25 pm

1 stop12h 45m

$701

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Sun 4/26

7:00 pm-6:45 am

Nonstop6h 45m

London Heathrow

Wed 4/29

11:45 am-6:30 pm

1 stop11h 45m

$702

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Thu 4/2

9:30 pm-9:15 am

Nonstop6h 45m

London Heathrow

Mon 4/6

6:30 am-4:25 pm

1 stop14h 55m

$702

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Sat 4/4

5:15 pm-8:50 am

1 stop10h 35m

London Heathrow

Tue 4/14

6:30 am-4:25 pm

1 stop14h 55m

$706
Quickest round-trip

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Fri 5/8

7:00 pm-6:45 am

Nonstop6h 45m

London Heathrow

Fri 5/22

6:55 pm-9:20 pm

Nonstop7h 25m

$708

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Sun 4/12

9:30 pm-9:15 am

Nonstop6h 45m

London Heathrow

Sun 4/19

9:40 am-12:07 pm

Nonstop7h 27m

$708

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Sun 4/26

8:10 pm-8:00 am

Nonstop6h 50m

London Heathrow

Sat 5/2

6:05 pm-11:52 pm

1 stop10h 47m

$721

PortlandLondon

PWM - LHR

PWMLHR

Portland

Sun 5/10

6:25 am-6:20 am

1 stop18h 55m

London Heathrow

Sat 5/16

8:40 am-12:43 am

2 stops21h 03m

$723

BangorLondon

BGR - LHR

BGRLHR

Bangor

Tue 4/28

5:07 pm-8:50 am

1 stop10h 43m

London Heathrow

Wed 5/13

8:20 am-3:47 pm

1 stop12h 27m

$730

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/27

Showing 1-10 of 60 resultsSorted by cheapest first
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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

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 30m. 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.

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
Croydon
Gatwick
Southend-on-Sea
Harrow
Eastleigh
Dartford
Dover
Winchester
Orpington
Watford
Northampton
Borehamwood
Broadway
Chipping Norton
Hayes
Kingston upon Thames
Eastbourne
Sutton

Browse thousands of different options on Cheapflights for your next trip

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Top 2 airlines flying from Maine to Heathrow

Discover the top 2 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 March 27, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$648Average$799FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$786Average$1,091FlexibilityNo cancel feeOn-time71%

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