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Cheap flights from Maine to London Heathrow Airport from £157

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 17/1. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — LHR
30 Nov — 7 Dec1
1 adult
1 adult, Economy, 0 bags

Find 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 31 October 2025.

Fri 14/1121:50BOS - LHR
1 stop10h 10mMultiple Airlines
Fri 21/1106:00LHR - BOS
1 stop13h 05mMultiple Airlines
Deal found 29/10£371
Sun 9/1120:00BOS - LHR
Nonstop6h 50mVirgin Atlantic
Tue 18/1120:25LHR - BOS
1 stop27h 30mVirgin Atlantic
Deal found 28/10£372
Fri 7/1120:40BOS - LHR
1 stop11h 20mMultiple Airlines
Fri 14/1109:00LHR - BOS
1 stop16h 20mMultiple Airlines
Deal found 28/10£373
Thu 13/1121:50BOS - LHR
1 stop32h 25mUnited Airlines
Sun 16/1109:00LHR - BOS
1 stop13h 50mUnited Airlines
Deal found 30/10£373
Sun 9/1119:50BOS - LHR
1 stop18h 40mIcelandair
Wed 19/1112:15LHR - BOS
1 stop10h 35mIcelandair
Deal found 30/10£374
Wed 19/1119:50BOS - LHR
1 stop18h 40mIcelandair
Mon 24/1120:35LHR - BOS
1 stop26h 15mIcelandair
Deal found 30/10£376
Sun 9/1106:32BOS - LHR
1 stop9h 48mMultiple Airlines
Tue 18/1112:05LHR - BOS
1 stop13h 15mMultiple Airlines
Deal found 30/10£376
Wed 19/1110:15BOS - LHR
1 stop15h 55mUnited Airlines
Fri 5/1213:45LHR - BOS
1 stop11h 15mUnited Airlines
Deal found 30/10£377
Thu 20/1111:35BOS - LHR
1 stop18h 15mIcelandair
Tue 25/1112:15LHR - BOS
1 stop10h 35mIcelandair
Deal found 29/10£379
Thu 20/1111:35BOS - LHR
1 stop26h 55mIcelandair
Thu 27/1112:15LHR - BOS
1 stop10h 35mIcelandair
Deal found 30/10£379
Sun 9/1106:00PWM - LHR
1 stop19h 20mDelta
Tue 18/1110:00LHR - PWM
2 stops18h 54mDelta
Deal found 28/10£450
Tue 11/1111:25PWM - LHR
1 stop13h 55mDelta
Tue 18/1116:10LHR - PWM
1 stop12h 44mDelta
Deal found 28/10£455

Cheap flight deals from Maine to Heathrow

Keep the following information in mind while searching for Maine to Heathrow flight deals. Data was last updated 31 October 2025.

Round-trip from

£371

One-way from

£157

Popular in

June

Cheapest in

October

Average price

£484
Austrian Airlines
  • Austrian Airlines
  • 14/11-21/11
  • 2 total stops
  • 23h 15m total
  • Maine to London
Search Deals
JetBlue
  • JetBlue
  • 17/1
  • 1 total stop
  • 26h 20m total
  • Maine to London
Search Deals
Highest demand for flights based on searches. 17% potential increase in price (£103 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£19 potential savings vs. average return price).
Search Deals
Average for round-trip flights in October 2025
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 31 October 2025.
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 6/12

15:40-07:10

1 stop10h 30m

London Heathrow

Wed 10/12

12:05-20:20

1 stop13h 15m

£377

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Wed 31/12

15:40-07:10

1 stop10h 30m

London Heathrow

Wed 14/1

13:45-20:00

1 stop11h 15m

£377

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Sat 29/11

19:12-06:55

Nonstop6h 43m

London Heathrow

Fri 5/12

09:20-12:12

Nonstop7h 52m

£382

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Mon 2/2

19:10-06:55

Nonstop6h 45m

London Heathrow

Tue 10/2

09:20-12:16

Nonstop7h 56m

£382

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Sat 28/2

18:54-06:55

Nonstop7h 01m

London Heathrow

Fri 6/3

09:20-12:18

Nonstop7h 58m

£382

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Tue 11/11

19:12-06:55

Nonstop6h 43m

London Heathrow

Sat 6/12

09:20-12:12

Nonstop7h 52m

£382

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Tue 11/11

19:12-06:55

Nonstop6h 43m

London Heathrow

Mon 12/1

09:20-12:16

Nonstop7h 56m

£382

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Tue 11/11

19:12-06:55

Nonstop6h 43m

London Heathrow

Fri 16/1

09:20-12:16

Nonstop7h 56m

£382

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Mon 10/11

20:00-07:50

Nonstop6h 50m

London Heathrow

Thu 15/1

06:20-13:40

1 stop12h 20m

£385

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Tue 11/11

20:00-07:50

Nonstop6h 50m

London Heathrow

Wed 19/11

08:55-16:20

1 stop12h 25m

£385

Flights are sorted by cheapest return flights first.

Deals found on 30/10

Showing 1-10 of 43 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, September is the cheapest month in which you can book a flight from Maine to London Heathrow Airport (average of £436). Flying from Maine to London Heathrow Airport in June is currently the most expensive (average of £1,051). 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, JetBlue, and Delta fly from Maine to London Heathrow Airport in about 6h 43m. The time it takes to get you to your destination can typically vary by up to 8h 14m. 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?

    £168 is the cheapest one-way deal found within the past few days, from JetBlue. You may also be able to find cheap deals on United Airlines and Air Canada, with prices starting from £169 and £169, 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, September is the cheapest month in which you can book a flight from Maine to London Heathrow Airport (average of £436). Flying from Maine to London Heathrow Airport in June is currently the most expensive (average of £1,051). 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
Croydon
Slough
Gatwick
Hounslow
Northampton
Luton
Ilford
Wembley
Deal
Hayes
Colchester
Watford
Winchester
Chichester
Swindon
Crawley
Romford
Brentford
Ipswich

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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San Francisco to London City flights
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George Bush Intcntl to Heathrow flights
O'Hare Intl to Gatwick flights
Boston to Luton flights
Dallas/Fort Worth to Gatwick flights
O'Hare Intl to London City flights
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Charlotte to Heathrow 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.

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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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