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Cheap flights from Maine to London from £144

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 23/2. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — LON
22 Jan — 29 Jan1
1 adult
1 adult, Economy, 0 bags

Cheap 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 23 December 2025.

Tue 30/1218:40BOS - LHR
1 stop20h 55mUnited Airlines
Mon 12/109:00LHR - BOS
2 stops37h 14mUnited Airlines
Deal found 22/12£373
Wed 31/1219:15BOS - LHR
Nonstop6h 45mBritish Airways
Thu 15/113:30LHR - BOS
Nonstop7h 45mBritish Airways
Deal found 22/12£374
Mon 29/1218:40BOS - LHR
1 stop20h 55mUnited Airlines
Wed 21/113:25LHR - BOS
2 stops29h 52mUnited Airlines
Deal found 22/12£375
Mon 29/1221:20BOS - LGW
1 stop16h 40mIberia
Wed 21/111:45LGW - BOS
1 stop13h 05mIberia
Deal found 22/12£376
Wed 31/1219:44BOS - LHR
1 stop10h 06mLufthansa
Fri 9/116:20LHR - BOS
1 stop12h 29mLufthansa
Deal found 23/12£377
Wed 31/1220:00BOS - LHR
Nonstop6h 50mMultiple Airlines
Thu 15/106:20LHR - BOS
1 stop12h 20mMultiple Airlines
Deal found 22/12£377
Tue 30/1218:40BOS - LHR
1 stop20h 55mMultiple Airlines
Mon 12/113:25LHR - BOS
1 stop25h 07mMultiple Airlines
Deal found 22/12£378
Wed 31/1220:00BOS - LHR
Nonstop6h 50mDelta
Tue 3/206:30LHR - BOS
1 stop11h 55mDelta
Deal found 21/12£379
Thu 25/1213:40BOS - LHR
1 stop14h 30mMultiple Airlines
Mon 29/1211:10LHR - BOS
1 stop12h 25mMultiple Airlines
Deal found 23/12£380
Wed 31/1210:15BOS - LHR
1 stop15h 55mAir Canada
Sun 18/106:50LHR - BOS
2 stops17h 52mAir Canada
Deal found 20/12£380
Tue 30/1208:00BOS - LHR
1 stop18h 05mDelta
Tue 13/106:20LHR - BOS
1 stop12h 20mDelta
Deal found 20/12£381
Tue 30/1205:45BOS - LHR
1 stop20h 20mDelta
Sat 17/106:30LHR - BOS
1 stop12h 00mDelta
Deal found 20/12£382

Find flight deals from Maine to London

Keep the following information in mind while searching for Maine to London flight deals. Data was last updated 23 December 2025.

Round-trip from

£373

One-way from

£144

Popular in

June

Cheapest in

October

Average price

£547
SWISS
  • SWISS
  • 6/5-11/5
  • 2 total stops
  • 24h 24m total
  • Maine to London
Search Deals
Austrian Airlines
  • Austrian Airlines
  • 23/2
  • 1 total stop
  • 15h 30m total
  • Maine to London
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (£55 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£10 potential savings vs. average return price).
Search Deals
Average for round-trip flights in December 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 23 December 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 - LTN

BOSLTN

Boston Logan Intl

Sun 18/1

22:10-18:15

2 stops15h 05m

London Luton

Sat 31/1

08:30-18:35

2 stops15h 05m

£377

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Sat 28/2

06:00-20:35

1 stop9h 35m

London Heathrow

Thu 5/3

12:05-20:20

1 stop13h 15m

£379

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Sun 18/1

19:12-06:55

Nonstop6h 43m

London Heathrow

Sun 25/1

09:20-12:16

Nonstop7h 56m

£380

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Mon 2/3

19:12-06:55

Nonstop6h 43m

London Heathrow

Sun 8/3

09:20-13:16

Nonstop7h 56m

£380

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Wed 4/2

12:15-07:10

2 stops13h 55m

London Heathrow

Wed 11/2

12:05-20:20

1 stop13h 15m

£382

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Sat 28/2

20:00-07:50

Nonstop6h 50m

London Heathrow

Thu 5/3

06:20-13:30

1 stop12h 10m

£383

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Wed 11/2

20:00-07:50

Nonstop6h 50m

London Heathrow

Wed 18/2

06:20-13:40

1 stop12h 20m

£383

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Wed 18/3

21:00-07:50

Nonstop6h 50m

London Heathrow

Mon 23/3

06:20-14:30

1 stop12h 10m

£383

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Fri 20/2

19:15-06:50

Nonstop6h 35m

London Heathrow

Sun 1/3

06:20-13:30

1 stop12h 10m

£383

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Mon 19/1

20:00-07:50

Nonstop6h 50m

London Heathrow

Tue 27/1

06:20-13:40

1 stop12h 20m

£383

Flights are sorted by cheapest return flights first.

Deals found on 23/12

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, April is the cheapest month in which you can book a flight from Maine to London (average of £439). Flying from Maine to London in December is currently the most expensive (average of £1,096). 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 Maine to London?

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 Delta can get you from Maine to London in just under 6h 43m. Your travel time can differ by up to 2h 52m. The distance between Maine and London is about 3254 mi. This flight may include one or multiple stops.

  • 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, April is the cheapest month in which you can book a flight from Maine to London (average of £439). Flying from Maine to London in December is currently the most expensive (average of £1,096). 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
Hounslow
Luton
Gatwick
Wembley
Ilford
Brentford
Colchester
Hayes
Watford
Crawley
Bedford
Romford
Chichester
Eastbourne
Ipswich
Bishop's Stortford
Chelmsford

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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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