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Cheap flights from Maine to London Heathrow Airport from £189

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 29/4. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — LHR
30 Mar — 6 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 25 March 2025.

Round-trip from

£431

One-way from

£189

Popular in

June

Cheapest in

November

Average price

£581
Austrian Airlines
  • Austrian Airlines
  • 27/4-5/5
  • 3 total stops
  • 28h 00m total
  • Maine to London
Search Deals
Delta
  • Delta
  • 27/4
  • Nonstop
  • 6h 50m total
  • Maine to London
Search Deals
Highest demand for flights based on searches. 17% potential increase in price (£111 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£20 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 2025
Search Deals

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 25 March 2025.

Thu 27/307:00BOS - LHR
1 stop20h 10mMultiple Airlines
Wed 2/412:10LHR - BOS
1 stop12h 45mMultiple Airlines
Deal found 25/3£431
Wed 23/423:35BOS - LHR
1 stop15h 45mIcelandair
Sat 3/521:25LHR - BOS
1 stop19h 10mIcelandair
Deal found 24/3£432
Tue 2/917:40BOS - LHR
1 stop23h 00mScandinavian Airlines
Wed 10/906:40LHR - BOS
1 stop13h 55mScandinavian Airlines
Deal found 23/3£434
Sun 27/421:40BOS - LHR
1 stop32h 45mUnited Airlines
Wed 30/409:00LHR - BOS
1 stop13h 40mUnited Airlines
Deal found 24/3£435
Fri 19/907:15BOS - LHR
Nonstop6h 30mBritish Airways
Sun 5/1014:40LHR - BOS
Nonstop7h 30mBritish Airways
Deal found 24/3£438
Thu 9/1017:04BOS - LHR
1 stop9h 41mIberia
Mon 20/1008:55LHR - BOS
Nonstop7h 25mIberia
Deal found 24/3£441
Sat 26/417:35BOS - LHR
1 stop11h 25mAir Canada
Tue 13/508:45LHR - BOS
2 stops14h 24mAir Canada
Deal found 24/3£441
Thu 27/321:15BOS - LHR
Nonstop6h 35mFinnair
Mon 31/308:55LHR - BOS
Nonstop7h 25mFinnair
Deal found 24/3£446
Thu 27/320:20BOS - LHR
Nonstop6h 45mDelta
Sat 5/418:15LHR - BOS
Nonstop7h 45mDelta
Deal found 24/3£455
Tue 6/518:35BOS - LHR
1 stop10h 45mTAP AIR PORTUGAL
Tue 13/519:50LHR - BOS
2 stops29h 55mTAP AIR PORTUGAL
Deal found 25/3£456
Wed 2/417:35PWM - LHR
1 stop10h 55mJetBlue
Wed 9/408:15LHR - PWM
1 stop13h 25mJetBlue
Deal found 24/3£459
Mon 6/1017:10BOS - LHR
1 stop23h 30mAustrian Airlines
Wed 22/1006:00LHR - BOS
1 stop12h 50mAustrian Airlines
Deal found 24/3£464

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 25 March 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

Wed 23/4

23:35-20:20

1 stop15h 45m

London Heathrow

Tue 6/5

21:25-11:35

1 stop19h 10m

£431

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Sat 5/4

15:40-11:50

2 stops15h 10m

London Heathrow

Mon 14/4

06:00-13:50

1 stop12h 50m

£431

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Sun 4/5

12:15-06:30

2 stops13h 15m

London Heathrow

Sun 11/5

12:05-22:04

2 stops14h 59m

£434

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Tue 2/9

17:40-21:40

1 stop23h 00m

London Heathrow

Wed 10/9

06:40-15:35

1 stop13h 55m

£434

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Sun 27/4

21:40-11:25

1 stop32h 45m

London Heathrow

Wed 30/4

09:00-17:40

1 stop13h 40m

£435

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Fri 19/9

07:15-18:45

Nonstop6h 30m

London Heathrow

Sun 28/9

08:55-11:15

Nonstop7h 20m

£438

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Fri 4/4

19:40-07:20

Nonstop6h 40m

London Heathrow

Wed 9/4

14:40-17:10

Nonstop7h 30m

£438

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Sun 27/4

20:00-07:50

Nonstop6h 50m

London Heathrow

Thu 1/5

17:35-20:10

Nonstop7h 35m

£442

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Sun 6/4

18:26-06:30

Nonstop7h 04m

London Heathrow

Thu 10/4

08:25-10:56

Nonstop7h 31m

£447

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Tue 29/4

22:45-10:30

Nonstop6h 45m

London Heathrow

Mon 5/5

12:45-15:40

Nonstop7h 55m

£455

Flights are sorted by cheapest return flights first.

Deals found on 25/3

Showing 1-10 of 55 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 25 March 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 25 March 2025.
Peruse reviews from past customers who have flown with Delta, KLM and Azores 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
7,891 reviews
Check prices

Overall

8.0

Food

7.3

Comfort

8.0

Boarding

8.2

Entertainment

7.9

Crew

8.5

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
7,891 reviews
Delta
8.0
Very Good
7,891 reviews
Check prices

Overall

8.0

Food

7.3

Comfort

8.0

Boarding

8.2

Entertainment

7.9

Crew

8.5

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
1,318 reviews
Delta
8.0
Very Good
7,891 reviews
Check prices

Overall

8.0

Food

7.3

Comfort

8.0

Boarding

8.2

Entertainment

7.9

Crew

8.5

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.
Azores Airlines
7.6
Good
63 reviews
Delta
8.0
Very Good
7,891 reviews
Check prices

Overall

8.0

Food

7.3

Comfort

8.0

Boarding

8.2

Entertainment

7.9

Crew

8.5

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
1,266 reviews
Delta
8.0
Very Good
7,891 reviews
Check prices

Overall

8.0

Food

7.3

Comfort

8.0

Boarding

8.2

Entertainment

7.9

Crew

8.5

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
7.5
Good
769 reviews
Delta
8.0
Very Good
7,891 reviews
Check prices

Overall

8.0

Food

7.3

Comfort

8.0

Boarding

8.2

Entertainment

7.9

Crew

8.5

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?

    £189 is the cheapest one-way deal found within the past few days, from Delta. You may also be able to find cheap deals on Icelandair and American Airlines, with prices starting from £189 and £192, 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
Deal
Milton Keynes
Gatwick
Croydon
Luton
Slough
Eastbourne
Wembley
Northampton
Swindon
Hayes
Ilford
Crawley
Southend-on-Sea
Winchester
Maidstone
Ipswich
Watford
Southall

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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