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Cheap flights from Maine to London Heathrow Airport from £163

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 19/8. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — LHR
9 Jul — 16 Jul1
1 adult

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 4 July 2025.

Round-trip from

£374

One-way from

£163

Popular in

July

Cheapest in

October

Average price

£921
JetBlue
  • JetBlue
  • 23/8-31/8
  • Nonstop
  • 14h 29m total
  • Maine to London
Search Deals
British Airways
  • British Airways
  • 19/8
  • Nonstop
  • 6h 40m total
  • Maine to London
Search Deals
Highest demand for flights based on searches. 22% potential increase in price (£131 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 July 2025
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Find 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 4 July 2025.

Sat 23/818:40BOS - LHR
Nonstop6h 50mJetBlue
Sun 31/808:25LHR - BOS
Nonstop7h 39mJetBlue
Deal found 3/7£374
Tue 23/919:05BOS - LHR
Nonstop6h 40mVirgin Atlantic
Wed 1/1011:30LHR - BOS
1 stop13h 50mVirgin Atlantic
Deal found 4/7£374
Mon 21/718:40BOS - LHR
1 stop30h 50mMultiple Airlines
Mon 28/706:55LHR - BOS
1 stop15h 45mMultiple Airlines
Deal found 3/7£376
Mon 11/819:45BOS - LHR
Nonstop6h 35mBritish Airways
Sun 24/817:00LHR - BOS
1 stop10h 59mBritish Airways
Deal found 2/7£377
Tue 5/820:50BOS - LHR
1 stop10h 05mIcelandair
Sun 17/821:25LHR - BOS
1 stop19h 10mIcelandair
Deal found 4/7£378
Fri 15/818:35BOS - LHR
1 stop13h 55mDelta
Fri 22/806:15LHR - BOS
1 stop19h 05mDelta
Deal found 3/7£379
Wed 13/805:50BOS - LHR
1 stop23h 10mUnited Airlines
Tue 19/806:50LHR - BOS
2 stops14h 38mUnited Airlines
Deal found 2/7£380
Sun 10/820:10BOS - LHR
Nonstop6h 40mFinnair
Tue 19/808:55LHR - BOS
Nonstop7h 30mFinnair
Deal found 2/7£382
Fri 29/820:10BOS - LHR
Nonstop6h 40mIberia
Mon 15/911:30LHR - BOS
1 stop13h 20mIberia
Deal found 4/7£383
Sun 14/912:15BOS - LHR
2 stops13h 15mAir Canada
Wed 24/909:30LHR - BOS
1 stop10h 00mAir Canada
Deal found 3/7£386
Fri 28/1117:35BOS - LHR
1 stop10h 45mScandinavian Airlines
Thu 4/1207:05LHR - BOS
2 stops13h 45mScandinavian Airlines
Deal found 2/7£393
Tue 7/1012:40BOS - LHR
2 stops38h 40mAustrian Airlines
Tue 14/1019:30LHR - BOS
1 stop23h 20mAustrian Airlines
Deal found 3/7£394

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 4 July 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 23/8

18:40-06:30

Nonstop6h 50m

London Heathrow

Sun 31/8

08:25-11:04

Nonstop7h 39m

£374

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Tue 23/9

19:05-06:45

Nonstop6h 40m

London Heathrow

Wed 1/10

11:30-20:20

1 stop13h 50m

£374

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Mon 21/7

18:40-06:30

1 stop30h 50m

London Heathrow

Mon 28/7

06:55-17:40

1 stop15h 45m

£376

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Mon 11/8

19:45-07:20

Nonstop6h 35m

London Heathrow

Sun 24/8

17:00-22:59

1 stop10h 59m

£377

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Tue 5/8

20:50-11:55

1 stop10h 05m

London Heathrow

Sun 17/8

21:25-11:35

1 stop19h 10m

£378

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Fri 15/8

18:35-13:30

1 stop13h 55m

London Heathrow

Fri 22/8

06:15-20:20

1 stop19h 05m

£379

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Wed 13/8

18:40-10:00

1 stop10h 20m

London Heathrow

Wed 20/8

06:50-16:28

2 stops14h 38m

£380

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Sun 10/8

20:10-07:50

Nonstop6h 40m

London Heathrow

Tue 19/8

08:55-11:25

Nonstop7h 30m

£382

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Fri 29/8

20:10-07:50

Nonstop6h 40m

London Heathrow

Mon 15/9

11:30-19:50

1 stop13h 20m

£383

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Sun 14/9

12:15-06:30

2 stops13h 15m

London Heathrow

Wed 24/9

09:30-14:30

1 stop10h 00m

£386

Flights are sorted by cheapest return flights first.

Deals found on 3/7

Showing 1-10 of 43 results
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5

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, January is the cheapest month in which you can book a flight from Maine to London Heathrow Airport (average of £112). Flying from Maine to London Heathrow Airport in August is currently the most expensive (average of £164). 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.

What is the cheapest time of day to fly from ME to LHR?

Find hourly flight availability from Maine to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 4 July 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Maine to London Heathrow Airport as you normally would.

Reviews of airlines servicing Heathrow

Get insights into the airlines that provide service to Heathrow. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Heathrow. Reviews last updated 4 July 2025.
Get a feel of what it's like to fly with Delta, KLM, andAustrian Airlines from Maine to London Heathrow Airport by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very Good
7,982 reviews
Check prices

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.9

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very Good
7,982 reviews
Delta
8.0
Very Good
7,982 reviews
Check prices

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.9

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
KLM
7.8
Good
1,367 reviews
Delta
8.0
Very Good
7,982 reviews
Check prices

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.9

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Austrian Airlines
7.6
Good
809 reviews
Delta
8.0
Very Good
7,982 reviews
Check prices

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.9

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Finnair
7.6
Good
1,306 reviews
Delta
8.0
Very Good
7,982 reviews
Check prices

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.9

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
SWISS
7.5
Good
1,654 reviews
Delta
8.0
Very Good
7,982 reviews
Check prices

Boarding

8.2

Crew

8.5

Overall

8.0

Entertainment

7.9

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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.

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

    £163 is the cheapest one-way deal found within the past few days, from British Airways. You may also be able to find cheap deals on United Airlines and American Airlines, with prices starting from £163 and £164, 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, January is the cheapest month in which you can book a flight from Maine to London Heathrow Airport (average of £112). Flying from Maine to London Heathrow Airport in August is currently the most expensive (average of £164). 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 Maine?

Book flights to Maine if you plan to visit one of these locations
Hounslow
Croydon
Milton Keynes
Deal
Northampton
Gatwick
Luton
Slough
Wembley
Crawley
Eastbourne
Ilford
Hayes
Folkestone
Southend-on-Sea
Watford
Ipswich
Winchester
Swindon
Maidstone

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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San Francisco to London City flights
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How does Cheapflights help users find flights from Maine to Heathrow?

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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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