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Cheap flights from Maine to London Heathrow Airport from £172

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 4/5. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — LHR
21 Apr — 28 Apr1
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 16 April 2025.

Round-trip from

£380

One-way from

£172

Popular in

June

Cheapest in

November

Average price

£570
Icelandair
  • Icelandair
  • 1/5-6/5
  • 2 total stops
  • 32h 15m total
  • Maine to London
Search Deals
Icelandair
  • Icelandair
  • 4/5
  • 1 total stop
  • 31h 20m total
  • Maine to London
Search Deals
Highest demand for flights based on searches. 18% potential increase in price (£115 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 16 April 2025.

Thu 1/512:35BOS - LHR
1 stop18h 20mIcelandair
Tue 6/513:05LHR - BOS
1 stop13h 55mIcelandair
Deal found 15/4£380
Mon 28/420:50BOS - LHR
1 stop10h 05mMultiple Airlines
Wed 7/509:55LHR - BOS
1 stop16h 10mMultiple Airlines
Deal found 14/4£422
Fri 14/1122:00BOS - LHR
Nonstop6h 30mBritish Airways
Thu 20/1113:30LHR - BOS
Nonstop7h 25mBritish Airways
Deal found 15/4£426
Tue 2/917:40BOS - LHR
1 stop19h 00mScandinavian Airlines
Mon 15/918:40LHR - BOS
1 stop25h 55mScandinavian Airlines
Deal found 15/4£427
Sat 26/420:15BOS - LHR
Nonstop6h 50mVirgin Atlantic
Sat 3/512:45LHR - BOS
Nonstop7h 55mVirgin Atlantic
Deal found 15/4£431
Tue 7/1017:04BOS - LHR
1 stop9h 41mIberia
Thu 23/1008:55LHR - BOS
Nonstop7h 25mIberia
Deal found 15/4£433
Fri 18/418:10BOS - LHR
1 stop21h 50mUnited Airlines
Mon 21/413:45LHR - BOS
1 stop11h 10mUnited Airlines
Deal found 15/4£433
Fri 9/519:40BOS - LHR
Nonstop6h 40mFinnair
Thu 22/514:40LHR - BOS
Nonstop7h 25mFinnair
Deal found 15/4£436
Fri 25/418:26BOS - LHR
Nonstop7h 04mJetBlue
Fri 2/508:25LHR - BOS
Nonstop7h 31mJetBlue
Deal found 15/4£440
Mon 1/910:50BOS - LHR
1 stop14h 45mAir Canada
Tue 16/906:00LHR - BOS
2 stops15h 04mAir Canada
Deal found 15/4£443
Sat 26/422:45BOS - LHR
Nonstop6h 45mDelta
Sat 3/518:15LHR - BOS
Nonstop7h 45mDelta
Deal found 14/4£445
Wed 30/421:40BOS - LHR
1 stop15h 10mSWISS
Tue 6/513:45LHR - BOS
1 stop11h 10mSWISS
Deal found 15/4£449

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 16 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

Thu 1/5

12:35-11:55

1 stop18h 20m

London Heathrow

Tue 6/5

13:05-22:00

1 stop13h 55m

£380

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Mon 28/4

20:50-11:55

1 stop10h 05m

London Heathrow

Wed 7/5

09:55-21:05

1 stop16h 10m

£422

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Fri 25/4

20:05-15:40

1 stop14h 35m

London Heathrow

Wed 30/4

07:25-17:40

1 stop15h 15m

£427

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Fri 2/5

22:50-15:55

1 stop12h 05m

London Heathrow

Sun 4/5

14:40-17:05

Nonstop7h 25m

£429

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Sat 26/4

20:15-08:05

Nonstop6h 50m

London Heathrow

Sat 3/5

12:45-15:40

Nonstop7h 55m

£431

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Tue 6/5

07:25-18:55

Nonstop6h 30m

London Heathrow

Tue 13/5

20:10-22:30

Nonstop7h 20m

£433

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Tue 6/5

20:05-07:50

Nonstop6h 45m

London Heathrow

Mon 12/5

17:35-20:10

Nonstop7h 35m

£437

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Fri 25/4

18:26-06:30

Nonstop7h 04m

London Heathrow

Fri 2/5

08:25-10:56

Nonstop7h 31m

£440

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Thu 24/4

05:30-06:55

1 stop20h 25m

London Heathrow

Mon 28/4

09:30-17:24

2 stops36h 54m

£441

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Thu 1/5

10:20-06:35

2 stops15h 15m

London Heathrow

Thu 15/5

06:50-14:32

2 stops12h 42m

£444

Flights are sorted by cheapest return flights first.

Deals found on 15/4

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, 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 16 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 16 April 2025.
Peruse reviews from past customers who have flown with Delta, KLM and Finnair 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
7,918 reviews
Check prices

Crew

8.5

Boarding

8.2

Food

7.3

Entertainment

7.9

Comfort

7.9

Overall

8.0

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
7,918 reviews
Delta
8.0
Very Good
7,918 reviews
Check prices

Crew

8.5

Boarding

8.2

Food

7.3

Entertainment

7.9

Comfort

7.9

Overall

8.0

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
1,323 reviews
Delta
8.0
Very Good
7,918 reviews
Check prices

Crew

8.5

Boarding

8.2

Food

7.3

Entertainment

7.9

Comfort

7.9

Overall

8.0

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.
Finnair
7.6
Good
1,269 reviews
Delta
8.0
Very Good
7,918 reviews
Check prices

Crew

8.5

Boarding

8.2

Food

7.3

Entertainment

7.9

Comfort

7.9

Overall

8.0

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
775 reviews
Delta
8.0
Very Good
7,918 reviews
Check prices

Crew

8.5

Boarding

8.2

Food

7.3

Entertainment

7.9

Comfort

7.9

Overall

8.0

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
1,580 reviews
Delta
8.0
Very Good
7,918 reviews
Check prices

Crew

8.5

Boarding

8.2

Food

7.3

Entertainment

7.9

Comfort

7.9

Overall

8.0

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?

    £172 is the cheapest one-way deal found within the past few days, from Icelandair. You may also be able to find cheap deals on TAP AIR PORTUGAL and Delta, with prices starting from £228 and £229, 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, 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
Deal
Milton Keynes
Gatwick
Luton
Slough
Croydon
Eastbourne
Wembley
Northampton
Hayes
Crawley
Southend-on-Sea
Maidstone
Swindon
Ipswich
Southall
Ilford
Winchester
Folkestone

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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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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