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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 24/2. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — LHR
21 Feb — 28 Feb1
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 22 January 2026.

Tue 21/410:40
BOS
-
LHR
2 stops14h 55m
Multiple Airlines
Thu 30/409:00
LHR
-
BOS
1 stop13h 40m
Multiple Airlines
Deal found 20/1£364
Fri 30/119:12
BOS
-
LHR
Nonstop6h 43m
JetBlue
Fri 6/209:20
LHR
-
BOS
Nonstop8h 00m
JetBlue
Deal found 20/1£365
Wed 28/115:40
BOS
-
LHR
2 stops14h 40m
Air Canada
Wed 4/209:00
LHR
-
BOS
2 stops15h 42m
Air Canada
Deal found 21/1£366
Wed 21/1018:35
BOS
-
LHR
Nonstop6h 55m
JetBlue
Fri 6/1109:20
LHR
-
BOS
Nonstop7h 52m
JetBlue
Deal found 21/1£366
Tue 10/320:10
BOS
-
LHR
Nonstop6h 50m
British Airways
Wed 25/319:10
LHR
-
BOS
Nonstop7h 45m
British Airways
Deal found 21/1£367
Mon 2/222:10
BOS
-
LHR
1 stop9h 50m
Multiple Airlines
Sun 8/211:10
LHR
-
BOS
1 stop12h 25m
Multiple Airlines
Deal found 21/1£368
Fri 13/206:00
BOS
-
LHR
1 stop10h 20m
United Airlines
Tue 17/212:05
LHR
-
BOS
1 stop13h 15m
United Airlines
Deal found 20/1£369
Fri 30/106:00
BOS
-
LHR
1 stop9h 35m
United Airlines
Thu 12/209:00
LHR
-
BOS
1 stop16h 20m
United Airlines
Deal found 21/1£369
Mon 2/219:35
BOS
-
LHR
1 stop9h 05m
Finnair
Tue 10/213:30
LHR
-
BOS
Nonstop7h 45m
Finnair
Deal found 21/1£370
Wed 11/206:00
BOS
-
LHR
1 stop19h 20m
British Airways
Tue 24/213:30
LHR
-
BOS
Nonstop7h 45m
British Airways
Deal found 21/1£371
Tue 5/515:40
BOS
-
LHR
1 stop13h 20m
Air Canada
Wed 13/508:40
LHR
-
BOS
2 stops14h 27m
Air Canada
Deal found 21/1£372
Wed 28/115:40
BOS
-
LHR
1 stop10h 30m
Air Canada
Fri 6/213:25
LHR
-
BOS
1 stop11h 17m
Air Canada
Deal found 20/1£372

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 22 January 2026.

Round-trip from

£364

One-way from

£159

Popular in

June

Cheapest in

October

Average price

£640
British Airways
  • British Airways
  • 21/4-27/4
  • 2 total stops
  • 39h 35m total
  • Maine to London
Search Deals
Virgin Atlantic
  • Virgin Atlantic
  • 24/2
  • Nonstop
  • 6h 50m total
  • Maine to London
Search Deals
Highest demand for flights based on searches. 20% potential increase in price (£121 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£20 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 22 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

Sat 28/2

06:00-20:35

1 stop9h 35m

London Heathrow

Thu 5/3

09:00-17:19

2 stops37h 19m

£372

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Sun 8/3

18:40-20:35

1 stop21h 55m

London Heathrow

Mon 16/3

18:00-17:17

2 stops27h 17m

£374

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Sat 28/2

19:19-06:40

1 stop30h 21m

London Heathrow

Sat 14/3

13:25-09:32

1 stop24h 07m

£375

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Sun 1/2

15:35-07:10

1 stop10h 35m

London Heathrow

Wed 4/2

12:05-20:20

1 stop13h 15m

£380

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Tue 12/5

21:50-09:35

Nonstop6h 45m

London Heathrow

Tue 19/5

17:35-20:05

Nonstop7h 30m

£381

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Wed 15/4

05:30-06:30

1 stop20h 00m

London Heathrow

Fri 24/4

12:40-17:45

1 stop10h 05m

£381

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Sun 15/2

18:40-20:35

1 stop20h 55m

London Heathrow

Sun 22/2

13:25-09:32

1 stop25h 07m

£381

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Tue 10/3

15:35-07:10

1 stop11h 35m

London Heathrow

Sun 15/3

09:00-17:50

1 stop12h 50m

£381

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Mon 2/2

05:45-10:50

1 stop24h 05m

London Heathrow

Sun 8/2

13:25-09:32

1 stop25h 07m

£382

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Tue 12/5

18:50-10:00

1 stop10h 10m

London Heathrow

Wed 20/5

06:50-16:24

2 stops14h 34m

£382

Flights are sorted by cheapest return flights first.

Deals found on 21/1

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 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 £444). Flying from Maine to London Heathrow Airport in December is currently the most expensive (average of £1,096). 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 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, American Airlines, and KLM fly from Maine to London Heathrow Airport in about 9h 35m. The time it takes to get you to your destination can typically vary by up to 6h 32m. 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?

    £106 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 £147 and £147, 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, Portland - London Heathrow and Bangor - 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 £444). Flying from Maine to London Heathrow Airport in December is currently the most expensive (average of £1,096). 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
Northampton
Wembley
Gatwick
Slough
Hounslow
Ilford
Brentford
Hayes
Colchester
Watford
Swindon
Crawley
Bedford
Kingston upon Thames
Chelmsford
Eastbourne
Romford

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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Dulles Intl to Gatwick flights
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Los Angeles to Gatwick flights
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Philadelphia to Heathrow flights
Boston to Stansted flights
Dulles Intl to London City flights
Tampa to Heathrow flights
Baltimore to Gatwick flights
O'Hare Intl to Gatwick flights
San Francisco to Gatwick flights
Los Angeles to London City flights
Reagan-National to Gatwick flights
Los Angeles to Stansted flights
Minneapolis to Heathrow flights
O'Hare Intl to London City flights
San Francisco to London City flights
O'Hare Intl to Stansted flights
George Bush Intcntl to Heathrow flights
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Austin to Heathrow flights
San Diego 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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