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Cheap flights from Maine to London Heathrow Airport from £168

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 16/8. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — LHR
12 Apr — 19 Apr1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Maine to Heathrow

Enter your travel dates to find the best prices.

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 13 March 2026.

Fri 3/420:50
BOS
-
LHR
1 stop10h 05m
Icelandair
Sun 12/421:25
LHR
-
BOS
1 stop29h 20m
Icelandair
Deal found 8/3£369
Sat 18/418:40
BOS
-
LHR
1 stop21h 20m
Air Canada
Mon 20/411:05
LHR
-
BOS
2 stops32h 47m
Air Canada
Deal found 8/3£370
Thu 23/423:00
BOS
-
LHR
1 stop16h 20m
Icelandair
Sun 3/513:05
LHR
-
BOS
1 stop10h 45m
Icelandair
Deal found 8/3£370
Mon 20/423:00
BOS
-
LHR
1 stop16h 20m
Icelandair
Tue 12/513:05
LHR
-
BOS
1 stop10h 45m
Icelandair
Deal found 8/3£371
Thu 2/423:00
BOS
-
LHR
1 stop31h 55m
Icelandair
Tue 14/421:25
LHR
-
BOS
1 stop29h 20m
Icelandair
Deal found 9/3£372
Thu 23/420:50
BOS
-
LHR
1 stop18h 30m
Icelandair
Thu 30/413:05
LHR
-
BOS
1 stop13h 40m
Icelandair
Deal found 8/3£372
Tue 28/420:50
BOS
-
LHR
1 stop10h 05m
Icelandair
Tue 5/521:25
LHR
-
BOS
1 stop26h 25m
Icelandair
Deal found 9/3£373
Wed 22/420:50
BOS
-
LHR
1 stop18h 30m
Icelandair
Tue 5/521:25
LHR
-
BOS
1 stop26h 25m
Icelandair
Deal found 10/3£374
Sun 26/418:45
BOS
-
LHR
1 stop32h 50m
Air Canada
Wed 29/406:50
LHR
-
BOS
2 stops13h 02m
Air Canada
Deal found 8/3£376
Tue 7/420:50
BOS
-
LHR
1 stop10h 05m
Icelandair
Tue 21/413:05
LHR
-
BOS
1 stop10h 45m
Icelandair
Deal found 8/3£376
Tue 7/413:00
BOS
-
LHR
2 stops16h 00m
Air Canada
Thu 9/408:45
LHR
-
BOS
2 stops14h 12m
Air Canada
Deal found 8/3£377
Thu 7/523:00
BOS
-
LHR
1 stop16h 20m
Icelandair
Tue 19/521:25
LHR
-
BOS
1 stop29h 20m
Icelandair
Deal found 9/3£378

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 13 March 2026.

Round-trip from

£369

One-way from

£168

Popular in

July

Cheapest in

October

Average price

£643
Icelandair
  • Icelandair
  • 3/4-12/4
  • 2 total stops
  • 39h 25m total
  • Maine to London
Search Deals
JetBlue
  • JetBlue
  • 16/8
  • Nonstop
  • 6h 51m total
  • Maine to London
Search Deals
Highest demand for flights based on searches. 17% potential increase in price (£99 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£21 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

Cheapflights Fare Finder

 
Customise 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 858,174 searches. Data last updated 13 March 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 return flight

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Wed 22/4

18:40-21:00

1 stop21h 20m

London Heathrow

Wed 29/4

13:50-19:55

1 stop11h 05m

£458

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Sat 11/4

18:40-21:00

1 stop21h 20m

London Heathrow

Sun 19/4

09:05-13:50

1 stop33h 45m

£459

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Mon 20/4

05:45-10:40

1 stop23h 55m

London Heathrow

Fri 24/4

09:30-09:49

1 stop29h 19m

£463

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Thu 16/4

05:45-10:40

1 stop23h 55m

London Heathrow

Sat 25/4

09:30-09:49

1 stop29h 19m

£463

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Fri 17/4

18:40-21:00

1 stop21h 20m

London Heathrow

Wed 22/4

13:50-19:55

1 stop11h 05m

£495

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Wed 26/8

15:35-06:30

1 stop9h 55m

London Heathrow

Mon 31/8

10:50-17:40

1 stop11h 50m

£501
Fastest return journey

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Mon 13/4

23:10-10:40

Nonstop6h 30m

London Heathrow

Sat 18/4

18:55-21:20

Nonstop7h 25m

£508

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Thu 16/4

15:10-13:05

1 stop16h 55m

London Heathrow

Mon 20/4

18:55-21:20

Nonstop7h 25m

£512

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Fri 3/4

19:30-07:10

Nonstop6h 40m

London Heathrow

Sat 18/4

14:30-16:55

Nonstop7h 25m

£515

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Mon 20/4

19:30-07:10

Nonstop6h 40m

London Heathrow

Sat 30/5

20:10-22:35

Nonstop7h 25m

£530

Flights are sorted by cheapest return flights first.

Deals found on 11/3

Showing 1-10 of 51 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 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

How much does it cost for a return flight 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?

    Airlines like United Airlines and Delta fly from Maine to London Heathrow Airport in about 10h 45m. The time it takes to get you to your destination can typically vary by up to 10h 35m. Maine and London Heathrow Airport are separated by a distance of 3067 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

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

    £89 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 Eurowings, with prices starting from £106 and £148, 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, Bangor - London Heathrow and Portland - 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

Travelling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Milton Keynes
Wembley
Croydon
Northampton
Luton
Hounslow
Slough
Gatwick
Ilford
Hayes
Brentford
Colchester
Guildford
Watford
Kingston upon Thames
Chelmsford
Eastbourne
Ipswich
Swindon
Bedford

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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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Newark to Stansted flights
Newark to Luton flights
Orlando to Heathrow flights
Atlanta to Heathrow flights
Newark to London City flights
Dulles Intl to Gatwick flights
Boston to London City flights
Miami to Heathrow flights
Reagan-National to Heathrow flights
Dulles Intl to London City flights
Boston to Stansted flights
Hobby to Heathrow flights
Los Angeles to Stansted flights
Baltimore to Gatwick flights
Los Angeles to Gatwick flights
Philadelphia to Heathrow flights
Reagan-National to Gatwick flights
Denver to Heathrow flights
O'Hare Intl to Gatwick flights
Los Angeles to London City flights
San Francisco to Gatwick flights
O'Hare Intl to London City flights
George Bush Intcntl to Heathrow flights
O'Hare Intl to Stansted flights
Minneapolis to Heathrow flights
San Francisco to London City flights
Detroit to Heathrow flights
Tampa to Heathrow flights
Dallas/Fort Worth to Gatwick flights
Seattle to Gatwick flights
LaGuardia to Stansted flights

Fly with Cheapflights

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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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