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Cheap flights from Maine to London from £150

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 6/2. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — LON
11 Dec — 18 Dec1
1 adult
1 adult, Economy, 0 bags

Find flight deals from Maine to London

Enter your travel dates to find the best prices.

Cheapest flights from Maine to London
Explore the most affordable flight options available from Maine to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 November 2025.

Mon 10/1120:00BOS - LHR
Nonstop6h 50mVirgin Atlantic
Tue 18/1113:05LHR - BOS
Nonstop7h 55mVirgin Atlantic
Deal found 9/11£377
Fri 14/1106:00BOS - LHR
1 stop10h 20mUnited Airlines
Wed 19/1109:00LHR - BOS
1 stop16h 20mUnited Airlines
Deal found 10/11£378
Sun 7/1218:05BOS - LGW
1 stop10h 45mTAP AIR PORTUGAL
Sun 14/1210:40LGW - BOS
1 stop14h 30mTAP AIR PORTUGAL
Deal found 10/11£378
Fri 14/1116:20BOS - STN
2 stops22h 45mMultiple Airlines
Tue 25/1106:30STN - BOS
2 stops17h 05mMultiple Airlines
Deal found 9/11£378
Thu 20/1111:35BOS - LHR
1 stop26h 55mIcelandair
Mon 24/1120:35LHR - BOS
1 stop26h 15mIcelandair
Deal found 9/11£379
Tue 18/1121:50BOS - LGW
1 stop15h 00mSWISS
Sat 22/1118:40LGW - BOS
1 stop30h 20mSWISS
Deal found 9/11£379
Wed 3/1221:20BOS - STN
1 stop12h 45mMultiple Airlines
Thu 11/1206:30STN - BOS
1 stop12h 25mMultiple Airlines
Deal found 9/11£379
Tue 18/1110:15BOS - LHR
2 stops15h 15mAir Canada
Tue 25/1109:00LHR - BOS
2 stops15h 12mAir Canada
Deal found 10/11£380
Thu 4/1213:00BOS - LTN
2 stops19h 20mMultiple Airlines
Mon 8/1206:00LTN - BOS
2 stops17h 02mMultiple Airlines
Deal found 10/11£380
Wed 12/1121:50BOS - LGW
1 stop15h 00mSWISS
Sat 15/1118:40LGW - BOS
1 stop30h 40mSWISS
Deal found 11/11£380
Sun 16/1110:15BOS - STN
3 stops32h 05mMultiple Airlines
Sun 23/1106:10STN - BOS
2 stops17h 25mMultiple Airlines
Deal found 10/11£380
Wed 3/1219:12BOS - LHR
Nonstop6h 43mJetBlue
Tue 9/1209:20LHR - BOS
Nonstop7h 52mJetBlue
Deal found 8/11£381

Cheap flight deals from Maine to London

Keep the following information in mind while searching for Maine to London flight deals. Data was last updated 11 November 2025.

Round-trip from

£378

One-way from

£152

Popular in

June

Cheapest in

October

Average price

£646
United Airlines
  • United Airlines
  • 12/12-16/12
  • 2 total stops
  • 22h 50m total
  • Maine to London
Search Deals
British Airways
  • British Airways
  • 12/1
  • Nonstop
  • 6h 45m total
  • Maine to London
Search Deals
Highest demand for flights based on searches. 17% potential increase in price (£107 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£21 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Maine to London 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 11 November 2025.
Use the filters below to find and compare flights from Maine to London that are best for you.

Fly from

Maine

Fly to

London

Route

Depart

Return

Price

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Thu 4/12

12:02-07:10

2 stops14h 08m

London Heathrow

Tue 9/12

09:00-20:20

1 stop16h 20m

£378

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Mon 1/12

07:30-07:10

2 stops18h 40m

London Heathrow

Sun 7/12

09:00-20:00

1 stop16h 00m

£378

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Wed 3/12

19:12-06:55

Nonstop6h 43m

London Heathrow

Tue 13/1

09:20-12:16

Nonstop7h 56m

£381

BostonLondon

BOS - STN

BOSSTN

Boston Logan Intl

Tue 24/3

20:25-15:55

1 stop15h 30m

London Stansted

Tue 31/3

09:55-15:30

1 stop10h 35m

£381

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Sun 15/2

19:12-06:55

Nonstop6h 43m

London Heathrow

Thu 19/2

09:20-12:16

Nonstop7h 56m

£381

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Thu 5/2

19:10-06:55

Nonstop6h 45m

London Heathrow

Thu 12/2

09:20-12:16

Nonstop7h 56m

£381

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Fri 20/2

19:12-06:55

Nonstop6h 43m

London Heathrow

Sun 1/3

09:20-12:16

Nonstop7h 56m

£381

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Thu 15/1

15:40-07:10

1 stop10h 30m

London Heathrow

Mon 19/1

13:45-20:00

1 stop11h 15m

£381

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Sun 11/1

15:40-07:10

1 stop10h 30m

London Heathrow

Fri 16/1

13:45-20:00

1 stop11h 15m

£381

BostonLondon

BOS - LTN

BOSLTN

Boston Logan Intl

Sat 10/1

17:10-07:35

1 stop9h 25m

London Luton

Tue 13/1

09:00-18:59

1 stop14h 59m

£382

Flights are sorted by cheapest return flights first.

Deals found on 10/11

Showing 1-10 of 60 results
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Best time to book a flight from Maine to London

Have a flexible travel schedule? Discover the best time to fly to London 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

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

Currently, September is the cheapest month in which you can book a flight from Maine to London (average of £437). Flying from Maine to London in June is currently the most expensive (average of £1,052). 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.

Related info for your journey

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

    United Airlines, JetBlue, and Icelandair can get you from Maine to London in just under 6h 43m. Your travel time can differ by up to 7h 25m. The distance between Maine and London is about 3254 mi. This flight may include one or multiple stops.

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

    £153 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 Icelandair, with prices starting from £160 and £165, respectively.

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

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

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Maine to London 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?

    Currently, September is the cheapest month in which you can book a flight from Maine to London (average of £437). Flying from Maine to London in June is currently the most expensive (average of £1,052). 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 London?

Book flights to London if you plan to visit one of these locations
Milton Keynes
Croydon
Slough
Gatwick
Hounslow
Luton
Ilford
Wembley
Deal
Hayes
Colchester
Watford
Winchester
Crawley
Brentford
Romford
Chichester
Ipswich
Bedford
Eastbourne

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Alternative routes for Maine to London

See prices for flight routes from nearby airports that may be better suited for you.
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Fly with Cheapflights

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

When you search for this flight from Maine to London, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

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

Cheapflights helps you find that perfect flight to London from Maine by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

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

Certainly. Search results for flights to London from Maine shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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

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

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