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$204+ Cheap flights from Maine to London (LON)

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 12/30. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — LON
Dec 5 — Dec 121
Fri 12/5
Fri 12/12
1 adult, Economy
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Find flight deals from Maine to London

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 November 5, 2025.

This CrystalTravel deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/99:50 pmBOS - LHR
1 stop10h 10mSWISS
Wed 11/1212:05 pmLHR - BOS
1 stop13h 15mSWISS
Deal found 11/3$490
This Mytrip deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1310:45 amBOS - STN
2 stops21h 35mMultiple Airlines
Tue 11/189:45 pmSTN - BOS
3 stops26h 27mMultiple Airlines
Deal found 11/3$490
This oojo deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/37:50 pmBOS - LHR
1 stop18h 40mIcelandair
Tue 1/1312:15 pmLHR - BOS
1 stop10h 35mIcelandair
Deal found 11/3$491
This Expedia deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/127:15 pmBOS - LHR
Nonstop6h 45mIberia
Mon 12/1511:25 amLHR - BOS
1 stop13h 25mIberia
Deal found 11/3$492
This Mytrip deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/127:50 pmBOS - LTN
2 stops22h 15mMultiple Airlines
Wed 11/196:50 amLTN - BOS
2 stops16h 00mMultiple Airlines
Deal found 11/3$493
This United deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/85:30 amBOS - LHR
1 stop20h 10mMultiple Airlines
Fri 11/146:00 amLHR - BOS
1 stop19h 20mMultiple Airlines
Deal found 11/3$493
This CrystalTravel deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/189:50 pmBOS - LHR
1 stop10h 10mSWISS
Sun 11/239:00 amLHR - BOS
1 stop16h 00mSWISS
Deal found 11/3$494
This United Airlines deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/195:30 amBOS - LHR
1 stop20h 40mUnited Airlines
Sun 11/239:00 amLHR - BOS
1 stop16h 00mUnited Airlines
Deal found 11/3$495
This Air Canada deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/133:40 pmBOS - LHR
1 stop10h 30mMultiple Airlines
Tue 11/189:00 amLHR - BOS
2 stops15h 12mMultiple Airlines
Deal found 11/3$496
This Kiwi.com deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/910:20 pmBOS - LGW
1 stop12h 15mMultiple Airlines
Wed 11/129:40 pmLGW - BOS
2 stops20h 40mMultiple Airlines
Deal found 11/3$496
This Mytrip deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/37:50 pmBOS - STN
2 stops12h 30mMultiple Airlines
Wed 12/106:30 amSTN - BOS
2 stops16h 20mMultiple Airlines
Deal found 11/3$496
This Kiwi.com deal was found by Cheapflights users on 11/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/115:10 pmBOS - LTN
1 stop11h 35mMultiple Airlines
Sat 12/612:25 pmLTN - BOS
1 stop11h 30mMultiple Airlines
Deal found 11/3$497

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 November 5, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$489
(Booking.com)

One-way from

$204
(Booking.com)

Popular in

June

Cheapest in

October

Average price

$790
Provider with most accurate pricing for Portland-London (LON) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Portland-London (LON) flights.
Search Deals
From Maine to London (LON)
Search Deals
One-way flight from Maine to London (LON)
Search Deals
Highest demand for flights based on searches. 17% potential increase in price ($181 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($32 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

Cheapflights Fare Finder

 
Customize 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 2,558,603 searches. Data last updated November 5, 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

Fri 12/5

3:40 pm-7:10 am

1 stop10h 30m

London Heathrow

Fri 12/12

1:45 pm-8:00 pm

1 stop11h 15m

$495

BostonLondon

BOS - LGW

BOSLGW

Boston Logan Intl

Wed 1/21

4:45 pm-3:10 pm

2 stops17h 25m

London Gatwick

Mon 1/26

5:20 pm-3:15 pm

2 stops26h 55m

$498

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Thu 12/4

10:30 am-7:10 am

2 stops15h 40m

London Heathrow

Sun 12/7

9:00 am-8:00 pm

1 stop16h 00m

$499

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Fri 1/16

7:10 pm-6:55 am

Nonstop6h 45m

London Heathrow

Tue 1/20

9:20 am-12:16 pm

Nonstop7h 56m

$502

BostonLondon

BOS - STN

BOSSTN

Boston Logan Intl

Thu 11/13

4:20 pm-4:00 pm

2 stops18h 40m

London Stansted

Mon 11/17

7:40 am-6:35 pm

2 stops15h 55m

$502

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Fri 2/13

10:15 am-7:10 am

1 stop15h 55m

London Heathrow

Tue 2/17

1:45 pm-8:20 pm

1 stop11h 35m

$503

BostonLondon

BOS - STN

BOSSTN

Boston Logan Intl

Wed 11/12

8:40 pm-10:50 pm

2 stops21h 10m

London Stansted

Wed 11/19

9:45 pm-6:35 pm

3 stops25h 50m

$504

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Fri 11/28

7:10 pm-6:50 am

Nonstop6h 40m

London Heathrow

Wed 12/10

9:00 am-4:20 pm

1 stop12h 20m

$505

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Sun 11/16

8:00 pm-7:50 am

Nonstop6h 50m

London Heathrow

Mon 11/24

6:20 am-1:40 pm

1 stop12h 20m

$505

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Wed 12/3

8:00 pm-7:50 am

Nonstop6h 50m

London Heathrow

Wed 12/10

8:55 am-4:20 pm

1 stop12h 25m

$505

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/5

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 round-trip 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 $575). Flying from Maine to London in June is currently the most expensive (average of $1,385). 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 LON?

Find hourly flight availability from Maine to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 5, 2025.

It’s optimal to fly from Maine to London in the evening. By choosing this option you can save up to 22% on the cost of your flight, compared to a flight at noon.

How much does it cost to fly round-trip 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?

    Airlines like United Airlines, JetBlue, and Virgin Atlantic fly from Maine to London in about 6h 40m. The time it takes to get you to your destination can typically vary by up to 3h 50m. Airlines will cover a distance of 3254 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    For one-way options, check prices for SWISS. According to our data, you can fly for as low as $208. Users have also found prices from $210 and $213 on United Airlines and Icelandair, respectively.

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

    Most travelers choose Boston Logan Intl - London Heathrow, Boston Logan Intl - London Gatwick or Boston Logan Intl - London City when deciding on the best route from Maine to London.

  • 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 vacation 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 $575). Flying from Maine to London in June is currently the most expensive (average of $1,385). 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

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Hounslow
Ilford
Hayes
Southend-on-Sea
Harrow
Croydon
Eastleigh
Dartford
Dover
Winchester
Orpington
Gatwick
Borehamwood
Aylesbury
Bedford
Chipping Norton
Wembley
Folkestone
Eastbourne
Sutton

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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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Top 3 airlines flying from Maine to London

Discover the top 3 airlines that operate flights from Maine to London. 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 2,558,603 searches. Data last updated November 5, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$648Average$924FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$802Average$872FlexibilityNo cancel feeOn-time71%
DeltaCheapest$825Average$963FlexibilityNo cancel feeOn-timeN/A

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