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Cheap flights from London Heathrow Airport to Maine from £338

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 7/5. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — PWM
9 May — 16 May1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Heathrow to Maine

Enter your travel dates to find the best prices.

Cheapest flights from Heathrow to Maine
Explore the most affordable flight options available from Heathrow to Maine. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 9 April 2026.

Tue 2/610:05
LHR
-
BOS
Nonstop7h 30m
American Airlines
Mon 15/612:01
BOS
-
LHR
1 stop13h 24m
American Airlines
Deal found 6/4£399
Mon 17/817:35
LHR
-
BOS
Nonstop7h 30m
British Airways
Mon 24/807:25
BOS
-
LHR
Nonstop6h 30m
British Airways
Deal found 5/4£400
Sun 10/520:10
LHR
-
BOS
Nonstop7h 25m
British Airways
Mon 18/519:30
BOS
-
LHR
Nonstop6h 40m
British Airways
Deal found 8/4£402
Wed 13/520:10
LHR
-
BOS
Nonstop7h 25m
British Airways
Thu 21/519:30
BOS
-
LHR
Nonstop6h 40m
British Airways
Deal found 8/4£402
Mon 17/812:30
LHR
-
BOS
1 stop11h 37m
American Airlines
Wed 26/813:10
BOS
-
LHR
1 stop13h 10m
American Airlines
Deal found 5/4£403
Tue 12/509:40
LHR
-
BOS
Nonstop7h 30m
Delta
Sun 17/517:05
BOS
-
LHR
1 stop12h 15m
Delta
Deal found 8/4£405
Sun 10/511:45
LHR
-
BOS
1 stop12h 18m
Delta
Sun 17/517:05
BOS
-
LHR
1 stop12h 15m
Delta
Deal found 8/4£408
Mon 1/617:35
LHR
-
BOS
Nonstop7h 30m
British Airways
Fri 12/619:35
BOS
-
LHR
Nonstop6h 35m
British Airways
Deal found 5/4£408
Fri 14/820:10
LHR
-
BOS
Nonstop7h 25m
British Airways
Tue 25/821:50
BOS
-
LHR
Nonstop6h 45m
British Airways
Deal found 5/4£411
Sat 15/814:30
LHR
-
BOS
Nonstop7h 30m
British Airways
Mon 24/807:25
BOS
-
LHR
Nonstop6h 30m
British Airways
Deal found 5/4£411
Mon 3/811:30
LHR
-
BOS
1 stop13h 20m
Iberia
Mon 17/821:20
BOS
-
LHR
1 stop14h 00m
Iberia
Deal found 6/4£412
Mon 17/810:05
LHR
-
BOS
Nonstop7h 40m
American Airlines
Mon 31/815:07
BOS
-
LHR
1 stop14h 13m
American Airlines
Deal found 8/4£413

Find flight deals from Heathrow to Maine

Keep the following information in mind while searching for Heathrow to Maine flight deals. Data was last updated 9 April 2026.

Round-trip from

£399

One-way from

£338

Popular in

August

Cheapest in

October

Average price

£606
American Airlines
  • American Airlines
  • 2/6-15/6
  • 1 total stop
  • 20h 54m total
  • London to Maine
Search Deals
JetBlue
  • JetBlue
  • 7/5
  • 1 total stop
  • 16h 08m total
  • London to Maine
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (£74 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£16 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Heathrow to Maine 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 9 April 2026.
Use the filters below to find and compare flights from London Heathrow Airport to Maine that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Thu 7/5

20:50-21:05

1 stop29h 15m

Boston Logan Intl

Thu 14/5

22:50-09:10

1 stop29h 20m

£441

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Sun 10/5

09:05-13:50

1 stop33h 45m

Boston Logan Intl

Sun 17/5

18:25-21:00

1 stop21h 35m

£519

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Fri 15/5

08:15-23:03

1 stop19h 48m

Portland

Fri 22/5

06:00-09:30

1 stop22h 30m

£521

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Mon 20/4

09:55-16:25

1 stop11h 30m

Boston Logan Intl

Mon 27/4

19:00-06:45

Nonstop6h 45m

£522

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Thu 25/6

16:50-19:35

Nonstop7h 45m

Boston Logan Intl

Wed 15/7

19:05-06:45

Nonstop6h 40m

£530
Fastest return journey

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Thu 21/5

09:40-12:10

Nonstop7h 30m

Boston Logan Intl

Thu 28/5

23:10-10:40

Nonstop6h 30m

£531

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Fri 29/5

09:55-16:25

1 stop11h 30m

Boston Logan Intl

Fri 5/6

23:10-10:40

Nonstop6h 30m

£533

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Sun 10/5

16:50-19:35

Nonstop7h 45m

Boston Logan Intl

Sun 17/5

23:10-10:40

Nonstop6h 30m

£535

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Wed 6/5

10:50-19:50

1 stop14h 00m

Boston Logan Intl

Sun 10/5

19:25-07:05

Nonstop6h 40m

£538

LondonBoston

LHR - BOS

LHRBOS

London Heathrow

Sat 16/5

06:30-13:16

1 stop11h 46m

Boston Logan Intl

Tue 19/5

23:10-10:40

Nonstop6h 30m

£539

Flights are sorted by cheapest return flights first.

Deals found on 4/4

Showing 1-10 of 51 resultsSorted by cheapest first
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6

Best time to book a flight from Heathrow to Maine

Have a flexible travel schedule? Discover the best time to fly to Maine from Heathrow 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 London Heathrow Airport to Maine

What is the cheapest month to book a flight from London Heathrow Airport to Maine?

Currently, July is the cheapest month in which you can book a flight from London Heathrow Airport to Maine (average of £267). Flying from London Heathrow Airport to Maine in December is currently the most expensive (average of £783). 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.

How much does it cost for a return flight from London Heathrow Airport to Maine?

Reviews of airlines servicing Maine

Get insights into the airlines that provide service to Maine. 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 Maine. Reviews last updated 9 April 2026.
See what other customers who have flown with United Airlines from London Heathrow Airport to Maine have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,554 reviews
Check prices

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Food

6.6

Overall

7.4

Crew

8.1

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats
United Airlines
7.4
Good
9,554 reviews
United Airlines
7.4
Good
9,554 reviews
Check prices

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Food

6.6

Overall

7.4

Crew

8.1

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats

Related info for your journey

Find useful and relevant information for your journey from Heathrow to Maine. 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 London Heathrow Airport to Maine?

    LEVEL, United Airlines, and JetBlue can get you from London Heathrow Airport to Maine in just under 19h 48m. Your travel time can differ by up to 13h 57m. The distance between London Heathrow Airport and Maine is about 3173 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • What are the most popular routes from London Heathrow Airport to Maine?

    When deciding which route to take from London Heathrow Airport to Maine consider London Heathrow - Boston Logan Intl, London Heathrow - Bangor or London Heathrow - Portland as they are the most popular.

  • Can I find deals for flights from Heathrow to Maine that include hotel bookings?

    Yes. In addition to deals on Heathrow to Maine flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Heathrow to Maine?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Heathrow to Maine.

  • Can I find deals for business class flights from Heathrow to Maine?

    Yes. Cheapflights offers flight deals from Heathrow to Maine 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 London Heathrow Airport to Maine?

    Currently, July is the cheapest month in which you can book a flight from London Heathrow Airport to Maine (average of £267). Flying from London Heathrow Airport to Maine in December is currently the most expensive (average of £783). 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

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Alternative routes for Heathrow to Maine

See prices for flight routes from nearby airports that may be better suited for you.
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Stansted to Boston flights
Gatwick to Dallas/Fort Worth flights
Gatwick to San Francisco flights
Stansted to LaGuardia flights
Gatwick to O'Hare Intl flights
Heathrow to Midway flights
Luton to Miami flights

Top airline flying from Heathrow to Maine

Discover the top airline that operate flights from Heathrow to Maine. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 9 April 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest£543Average£720FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Heathrow to Maine?

Cheapflights makes it easy to find Heathrow to Maine flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Heathrow to Maine?

Cheapflights simply makes it quick and affordable to book flights from Heathrow to Maine by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Heathrow to Maine with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Heathrow to Maine, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Heathrow to Maine become cheaper?

Not ready to book yet? You can track prices for flights from Heathrow to Maine on Cheapflights with our Price Alert feature and get notified when better prices are available.

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