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Cheap flights from Maine to London Heathrow Airport from £192

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 10/5. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — LHR
5 May — 12 May1
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 30 April 2025.

Round-trip from

£427

One-way from

£192

Popular in

June

Cheapest in

November

Average price

£562
SWISS
  • SWISS
  • 10/5-18/5
  • 3 total stops
  • 29h 25m total
  • Maine to London
Search Deals
Icelandair
  • Icelandair
  • 10/5
  • 1 total stop
  • 26h 45m total
  • Maine to London
Search Deals
Highest demand for flights based on searches. 18% potential increase in price (£111 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 April 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 30 April 2025.

Sat 27/912:35BOS - LHR
1 stop18h 20mIcelandair
Wed 8/421:25LHR - BOS
1 stop19h 10mIcelandair
Deal found 29/4£427
Wed 10/907:25BOS - LHR
Nonstop6h 30mBritish Airways
Tue 30/914:40LHR - BOS
Nonstop7h 30mBritish Airways
Deal found 30/4£427
Sun 14/917:40BOS - LHR
2 stops15h 55mScandinavian Airlines
Tue 23/907:05LHR - BOS
2 stops13h 30mScandinavian Airlines
Deal found 30/4£428
Wed 30/415:40BOS - LHR
1 stop9h 50mUnited Airlines
Wed 7/513:45LHR - BOS
1 stop11h 10mUnited Airlines
Deal found 29/4£429
Sat 3/522:45BOS - LHR
Nonstop6h 45mVirgin Atlantic
Sat 10/512:45LHR - BOS
Nonstop7h 55mVirgin Atlantic
Deal found 29/4£431
Fri 2/512:15BOS - LHR
2 stops13h 15mMultiple Airlines
Thu 8/508:40LHR - BOS
2 stops14h 17mMultiple Airlines
Deal found 30/4£434
Fri 9/512:15BOS - LHR
2 stops13h 15mAir Canada
Tue 13/508:45LHR - BOS
2 stops14h 12mAir Canada
Deal found 30/4£435
Wed 30/418:26BOS - LHR
Nonstop7h 04mJetBlue
Sun 4/508:25LHR - BOS
Nonstop7h 31mJetBlue
Deal found 29/4£436
Tue 29/421:40BOS - LHR
1 stop10h 20mSWISS
Wed 7/513:45LHR - BOS
1 stop11h 10mSWISS
Deal found 28/4£441
Tue 20/520:05BOS - LHR
Nonstop6h 45mIberia
Tue 17/617:35LHR - BOS
Nonstop7h 30mIberia
Deal found 29/4£447
Wed 30/421:25BOS - LHR
1 stop10h 15mAer Lingus
Tue 17/612:00LHR - BOS
1 stop11h 45mAer Lingus
Deal found 30/4£450
Wed 14/520:05BOS - LHR
Nonstop6h 45mFinnair
Fri 30/517:00LHR - BOS
1 stop10h 49mFinnair
Deal found 30/4£451

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 30 April 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 10/5

12:15-06:30

2 stops13h 15m

London Heathrow

Sun 18/5

08:45-19:55

1 stop16h 10m

£427

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Sat 3/5

19:05-06:45

Nonstop6h 40m

London Heathrow

Sat 10/5

09:40-12:15

Nonstop7h 35m

£427

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Fri 9/5

20:05-07:50

Nonstop6h 45m

London Heathrow

Tue 13/5

11:30-19:50

1 stop13h 20m

£428

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Tue 6/5

18:55-10:00

1 stop10h 05m

London Heathrow

Tue 13/5

13:45-19:55

1 stop11h 10m

£429

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Sun 4/5

18:26-06:30

Nonstop7h 04m

London Heathrow

Thu 22/5

08:25-10:56

Nonstop7h 31m

£436

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Tue 6/5

10:20-06:30

1 stop15h 10m

London Heathrow

Mon 12/5

06:50-15:48

2 stops13h 58m

£440

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Thu 15/5

13:20-06:20

1 stop12h 00m

London Heathrow

Wed 21/5

11:30-19:50

1 stop13h 20m

£441

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Fri 16/5

20:50-11:55

1 stop10h 05m

London Heathrow

Mon 26/5

21:25-11:35

1 stop19h 10m

£442

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Tue 6/5

19:05-06:45

Nonstop6h 40m

London Heathrow

Sat 10/5

18:15-21:00

Nonstop7h 45m

£443

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Sun 11/5

21:40-13:00

1 stop10h 20m

London Heathrow

Mon 19/5

08:40-15:25

1 stop11h 45m

£454

Flights are sorted by cheapest return flights first.

Deals found on 29/4

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, 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 30 April 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.

Rainfall in Heathrow by month

Plan your trip to Heathrow by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in London Heathrow Airport ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London Heathrow Airport when rainfall is around 40.0 mm.

Temperature in Heathrow by month

Plan your trip to Heathrow by taking into account the average temperature totals by month.

If weather is an important factor for your trip to London Heathrow Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

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 30 April 2025.
Peruse reviews from past customers who have flown with Delta, KLM and Austrian Airlines from Maine to London to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very Good
7,934 reviews
Check prices

Entertainment

7.9

Crew

8.5

Overall

8.0

Comfort

7.9

Food

7.3

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very Good
7,934 reviews
Delta
8.0
Very Good
7,934 reviews
Check prices

Entertainment

7.9

Crew

8.5

Overall

8.0

Comfort

7.9

Food

7.3

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
KLM
7.8
Good
1,334 reviews
Delta
8.0
Very Good
7,934 reviews
Check prices

Entertainment

7.9

Crew

8.5

Overall

8.0

Comfort

7.9

Food

7.3

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Austrian Airlines
7.6
Good
781 reviews
Delta
8.0
Very Good
7,934 reviews
Check prices

Entertainment

7.9

Crew

8.5

Overall

8.0

Comfort

7.9

Food

7.3

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
SWISS
7.5
Good
1,588 reviews
Delta
8.0
Very Good
7,934 reviews
Check prices

Entertainment

7.9

Crew

8.5

Overall

8.0

Comfort

7.9

Food

7.3

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Air France
7.4
Good
1,446 reviews
Delta
8.0
Very Good
7,934 reviews
Check prices

Entertainment

7.9

Crew

8.5

Overall

8.0

Comfort

7.9

Food

7.3

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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?

    £192 is the cheapest one-way deal found within the past few days, from Icelandair. You may also be able to find cheap deals on Virgin Atlantic and United Airlines, with prices starting from £210 and £215, 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
Deal
Hounslow
Milton Keynes
Gatwick
Luton
Slough
Croydon
Eastbourne
Northampton
Southend-on-Sea
Ilford
Crawley
Hayes
Ipswich
Watford
Wembley
Swindon
Folkestone
Maidstone
Winchester

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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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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