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Cheap flights from Maine to London Heathrow Airport from £159

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 5/5. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — LHR
28 Feb — 7 Mar1
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 29 January 2026.

Mon 2/222:10
BOS
-
LHR
1 stop13h 10m
SWISS
Fri 6/213:45
LHR
-
BOS
1 stop11h 15m
SWISS
Deal found 27/1£356
Wed 11/212:16
BOS
-
LHR
1 stop28h 54m
Iberia
Sat 14/219:40
LHR
-
BOS
1 stop24h 35m
Iberia
Deal found 28/1£357
Thu 26/219:25
BOS
-
LHR
1 stop8h 50m
Aer Lingus
Mon 2/310:00
LHR
-
BOS
1 stop11h 50m
Aer Lingus
Deal found 27/1£357
Thu 5/215:35
BOS
-
LHR
1 stop10h 35m
Multiple Airlines
Tue 17/206:00
LHR
-
BOS
1 stop13h 05m
Multiple Airlines
Deal found 29/1£358
Sat 21/219:25
BOS
-
LHR
1 stop8h 50m
Aer Lingus
Sat 28/210:00
LHR
-
BOS
1 stop11h 50m
Aer Lingus
Deal found 28/1£359
Wed 18/215:35
BOS
-
LHR
1 stop10h 35m
Multiple Airlines
Mon 23/219:25
LHR
-
BOS
1 stop23h 40m
Multiple Airlines
Deal found 28/1£360
Wed 28/118:40
BOS
-
LHR
1 stop20h 55m
Multiple Airlines
Tue 3/206:00
LHR
-
BOS
1 stop19h 20m
Multiple Airlines
Deal found 27/1£360
Mon 16/215:35
BOS
-
LHR
1 stop10h 35m
Multiple Airlines
Mon 23/219:25
LHR
-
BOS
1 stop23h 40m
Multiple Airlines
Deal found 28/1£361
Thu 5/219:15
BOS
-
LHR
Nonstop6h 45m
Iberia
Sun 8/211:25
LHR
-
BOS
1 stop13h 25m
Iberia
Deal found 28/1£362
Thu 26/219:15
BOS
-
LHR
Nonstop6h 45m
Iberia
Mon 2/311:25
LHR
-
BOS
1 stop13h 25m
Iberia
Deal found 28/1£362
Thu 12/206:15
BOS
-
LHR
2 stops19h 55m
Multiple Airlines
Thu 19/306:50
LHR
-
BOS
2 stops16h 22m
Multiple Airlines
Deal found 28/1£363
Thu 12/206:15
BOS
-
LHR
2 stops19h 55m
Multiple Airlines
Thu 19/206:50
LHR
-
BOS
2 stops13h 02m
Multiple Airlines
Deal found 28/1£364

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 29 January 2026.

Round-trip from

£356

One-way from

£159

Popular in

June

Cheapest in

October

Average price

£623
Austrian Airlines
  • Austrian Airlines
  • 1/3-8/3
  • 3 total stops
  • 35h 55m total
  • Maine to London
Search Deals
United Airlines
  • United Airlines
  • 5/5
  • 2 total stops
  • 18h 05m total
  • Maine to London
Search Deals
Highest demand for flights based on searches. 20% potential increase in price (£114 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£19 potential savings vs. average return price).
Search Deals
Average for round-trip flights in January 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 29 January 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

Sun 8/2

15:35-07:10

1 stop10h 35m

London Heathrow

Wed 11/2

06:35-18:35

1 stop17h 00m

£376

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Fri 20/2

20:00-07:50

Nonstop6h 50m

London Heathrow

Sun 1/3

06:30-13:20

1 stop11h 50m

£376

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Wed 18/3

21:00-07:50

Nonstop6h 50m

London Heathrow

Mon 30/3

08:40-16:25

1 stop12h 45m

£378

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Sat 28/2

05:35-10:50

1 stop24h 15m

London Heathrow

Fri 6/3

18:00-22:37

1 stop33h 37m

£378

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Sun 1/3

20:00-07:50

Nonstop6h 50m

London Heathrow

Sun 8/3

06:30-13:20

1 stop11h 50m

£378

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Fri 6/3

20:59-20:10

1 stop18h 11m

London Heathrow

Tue 10/3

06:20-14:30

1 stop12h 10m

£378

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Thu 26/3

20:10-06:50

Nonstop6h 40m

London Heathrow

Sun 29/3

09:40-12:07

Nonstop7h 27m

£380

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Fri 24/4

18:40-21:00

1 stop21h 20m

London Heathrow

Tue 28/4

08:45-19:55

1 stop16h 10m

£381

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Mon 23/3

21:00-07:50

Nonstop6h 50m

London Heathrow

Mon 30/3

09:40-12:07

Nonstop7h 27m

£382

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Thu 19/3

20:10-06:50

Nonstop6h 40m

London Heathrow

Sun 29/3

09:40-12:07

Nonstop7h 27m

£382

Flights are sorted by cheapest return flights first.

Deals found on 27/1

Showing 1-10 of 50 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 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

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 £432). Flying from Maine to London Heathrow Airport in December is currently the most expensive (average of £1,067). 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.

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, Delta, and American Airlines fly from Maine to London Heathrow Airport in about 6h 50m. The time it takes to get you to your destination can typically vary by up to 6h 16m. Maine and London Heathrow Airport are separated by a distance of 3254 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?

    £103 is the cheapest one-way deal found within the past few days, from Aegean Airlines. You may also be able to find cheap deals on Eurowings and Air France, with prices starting from £143 and £143, 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.

  • 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 £432). Flying from Maine to London Heathrow Airport in December is currently the most expensive (average of £1,067). 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

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
Luton
Croydon
Wembley
Northampton
Gatwick
Slough
Hounslow
Ilford
Brentford
Hayes
Watford
Colchester
Guildford
Swindon
Chelmsford
Bedford
Crawley
Kingston upon Thames
Eastbourne

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

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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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