Heathrow

$233+ 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 7/7. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — LHR
May 17 — May 241
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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 April 17, 2026.

This LEVEL deal was found by Cheapflights users on 4/15. 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 10/1111:50 pm
BOS
-
LHR
1 stop15h 15m
LEVEL
Wed 10/148:50 pm
LHR
-
BOS
1 stop29h 25m
LEVEL
Deal found 4/15$551
This LEVEL deal was found by Cheapflights users on 4/15. 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 9/2911:00 pm
BOS
-
LHR
1 stop16h 05m
LEVEL
Tue 10/69:55 am
LHR
-
BOS
1 stop16h 20m
LEVEL
Deal found 4/15$562
This LEVEL deal was found by Cheapflights users on 4/14. 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 LEVEL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/411:50 pm
BOS
-
LHR
1 stop28h 20m
LEVEL
Tue 10/139:55 am
LHR
-
BOS
1 stop16h 20m
LEVEL
Deal found 4/14$568
This LEVEL deal was found by Cheapflights users on 4/16. 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
Wed 9/308:50 pm
LHR
-
BOS
1 stop29h 25m
LEVEL
Deal found 4/16$569
This Mytrip deal was found by Cheapflights users on 4/12. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/258:50 pm
BOS
-
LHR
2 stops19h 30m
Multiple Airlines
Thu 4/306:40 am
LHR
-
BOS
2 stops20h 05m
Multiple Airlines
Deal found 4/12$574
This LEVEL deal was found by Cheapflights users on 4/16. 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 10/1111:50 pm
BOS
-
LHR
1 stop28h 20m
LEVEL
Thu 10/159:55 am
LHR
-
BOS
1 stop16h 20m
LEVEL
Deal found 4/16$575
This LEVEL deal was found by Cheapflights users on 4/15. 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 9/1611:00 pm
BOS
-
LHR
1 stop29h 10m
LEVEL
Wed 9/238:50 pm
LHR
-
BOS
1 stop29h 25m
LEVEL
Deal found 4/15$579
This LEVEL deal was found by Cheapflights users on 4/14. 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 LEVEL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/410:50 pm
BOS
-
LHR
1 stop29h 20m
LEVEL
Mon 6/88:50 pm
LHR
-
BOS
1 stop29h 15m
LEVEL
Deal found 4/14$585
This LEVEL deal was found by Cheapflights users on 4/14. 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 LEVEL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/1511:00 pm
BOS
-
LHR
1 stop16h 05m
LEVEL
Tue 10/209:55 am
LHR
-
BOS
1 stop16h 20m
LEVEL
Deal found 4/14$586
This deal was found by Cheapflights users on 4/15. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/196:45 pm
BOS
-
LHR
1 stop12h 05m
Air Canada
Wed 4/2212:40 pm
LHR
-
BOS
1 stop10h 05m
Air Canada
Deal found 4/15$587
This LEVEL deal was found by Cheapflights users on 4/16. 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
Tue 11/39:55 am
LHR
-
BOS
1 stop16h 00m
LEVEL
Deal found 4/16$597
This Kiwi.com deal was found by Cheapflights users on 4/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/16:05 pm
BOS
-
LHR
1 stop11h 15m
TAP AIR PORTUGAL
Sat 5/306:00 am
LHR
-
BOS
1 stop19h 20m
TAP AIR PORTUGAL
Deal found 4/13$601

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 April 17, 2026.

Round-trip from

$551
(LEVEL)

One-way from

$233
(oojo)

Popular in

July

Cheapest in

October

Average price

$856
From Maine to London Heathrow
One-way flight from Maine to London Heathrow
Highest demand for flights based on searches. 23% potential increase in price ($256 potential increase over avg. RT price).
Cheapest flight prices on average. 10% potential price decrease ($81 potential savings vs. average RT price).
Average for round-trip flights in April 2026

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 April 17, 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

PortlandLondon

PWM - LHR

PWMLHR

Portland

Wed 5/6

12:46 pm-8:50 am

2 stops15h 04m

London Heathrow

Mon 5/11

9:55 am-12:43 am

2 stops19h 48m

$734

PortlandLondon

PWM - LHR

PWMLHR

Portland

Thu 5/7

12:50 pm-8:50 am

2 stops15h 00m

London Heathrow

Thu 5/14

8:40 am-12:43 am

2 stops21h 03m

$734

PortlandLondon

PWM - LHR

PWMLHR

Portland

Thu 5/7

2:38 pm-8:50 am

1 stop13h 12m

London Heathrow

Thu 5/14

3:50 pm-12:43 am

1 stop13h 53m

$736

PortlandLondon

PWM - LHR

PWMLHR

Portland

Sun 5/10

2:38 pm-8:50 am

1 stop13h 12m

London Heathrow

Sat 5/16

11:45 am-12:43 am

1 stop17h 58m

$736

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

$737

BangorLondon

BGR - LHR

BGRLHR

Bangor

Tue 4/28

5:07 pm-8:50 am

1 stop10h 43m

London Heathrow

Tue 5/12

8:20 am-3:47 pm

1 stop12h 27m

$737

BangorLondon

BGR - LHR

BGRLHR

Bangor

Tue 4/28

5:07 pm-8:50 am

1 stop10h 43m

London Heathrow

Tue 5/12

5:35 pm-3:47 pm

2 stops27h 12m

$743

PortlandLondon

PWM - LHR

PWMLHR

Portland

Fri 5/8

2:38 pm-12:05 pm

1 stop16h 27m

London Heathrow

Wed 5/13

6:30 am-11:12 pm

2 stops21h 42m

$749

BangorLondon

BGR - LHR

BGRLHR

Bangor

Tue 9/8

3:00 pm-10:20 am

1 stop14h 20m

London Heathrow

Mon 9/21

7:45 pm-2:23 pm

2 stops23h 38m

$750

BangorLondon

BGR - LHR

BGRLHR

Bangor

Sun 5/10

4:27 pm-8:50 am

1 stop11h 23m

London Heathrow

Wed 5/20

7:45 pm-3:47 pm

2 stops25h 02m

$750

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/15

Showing 1-10 of 57 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
No data available for this route at this time. Please check back soon.

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 35m. 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?

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

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 April 17, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$648Average$798FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$757Average$1,118FlexibilityNo cancel feeOn-time71%

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