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$220+ 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 5/5. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — LON
Mar 7 — Mar 141
Sat 3/7
Sat 3/14
1 adult, Economy
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Cheap 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 February 5, 2026.

This Booking.com deal was found by Cheapflights users on 2/4. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/287:25 pm
BOS
-
LHR
1 stop8h 50m
Aer Lingus
Thu 3/510:00 am
LHR
-
BOS
1 stop11h 50m
Aer Lingus
Deal found 2/4$490
This Booking.com deal was found by Cheapflights users on 2/3. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/57:25 pm
BOS
-
LHR
1 stop8h 50m
Aer Lingus
Mon 3/910:00 am
LHR
-
BOS
1 stop11h 50m
Aer Lingus
Deal found 2/3$491
This Mytrip deal was found by Cheapflights users on 2/3. 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 3/48:40 pm
BOS
-
LTN
2 stops21h 25m
Multiple Airlines
Mon 3/97:05 pm
LTN
-
BOS
3 stops26h 57m
Multiple Airlines
Deal found 2/3$491
This FlightHub deal was found by Cheapflights users on 2/3. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/128:50 pm
BOS
-
LGW
1 stop12h 50m
Icelandair
Tue 6/21:00 pm
LGW
-
BOS
1 stop10h 50m
Icelandair
Deal found 2/3$491
This Mytrip deal was found by Cheapflights users on 2/3. 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 2/45:10 pm
BOS
-
STN
1 stop11h 40m
Multiple Airlines
Wed 2/116:30 am
STN
-
BOS
1 stop12h 25m
Multiple Airlines
Deal found 2/3$491
This Booking.com deal was found by Cheapflights users on 2/3. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/56:40 pm
BOS
-
LHR
1 stop20h 55m
Multiple Airlines
Wed 2/118:05 pm
LHR
-
BOS
1 stop29h 15m
Multiple Airlines
Deal found 2/3$492
This Mytrip deal was found by Cheapflights users on 2/3. 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.
Tue 2/248:40 pm
BOS
-
LTN
3 stops18h 25m
Multiple Airlines
Sat 2/289:00 pm
LTN
-
BOS
2 stops26h 02m
Multiple Airlines
Deal found 2/3$492
This oojo deal was found by Cheapflights users on 2/2. 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.
Thu 3/1212:35 pm
BOS
-
LGW
1 stop18h 20m
Icelandair
Wed 3/1811:55 am
LGW
-
BOS
1 stop10h 55m
Icelandair
Deal found 2/2$492
This Mytrip deal was found by Cheapflights users on 2/2. 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.
Sat 5/28:50 pm
BOS
-
STN
2 stops21h 30m
Multiple Airlines
Fri 5/86:30 am
STN
-
BOS
2 stops17h 20m
Multiple Airlines
Deal found 2/2$492
This Mytrip deal was found by Cheapflights users on 2/2. 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.
Mon 3/236:10 pm
BOS
-
LTN
1 stop10h 25m
Multiple Airlines
Mon 4/68:15 am
LTN
-
BOS
1 stop15h 35m
Multiple Airlines
Deal found 2/2$493
This Mytrip deal was found by Cheapflights users on 2/3. 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.
Sat 2/211:00 pm
BOS
-
LGW
2 stops16h 35m
Multiple Airlines
Sat 2/289:30 pm
LGW
-
BOS
2 stops25h 32m
Multiple Airlines
Deal found 2/3$493
This Mytrip deal was found by Cheapflights users on 2/2. 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.
Sun 2/85:10 pm
BOS
-
STN
1 stop12h 55m
Multiple Airlines
Thu 2/121:45 pm
STN
-
BOS
1 stop10h 14m
Multiple Airlines
Deal found 2/2$493

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 February 5, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$490
(Booking.com)

One-way from

$220
(United Airlines)

Popular in

June

Cheapest in

October

Average price

$673
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. 20% potential increase in price ($218 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($34 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
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 February 5, 2026.
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 - LGW

BOSLGW

Boston Logan Intl

Wed 3/4

4:25 pm-7:55 pm

2 stops22h 30m

London Gatwick

Mon 3/9

9:00 am-9:00 pm

2 stops16h 00m

$491

BostonLondon

BOS - STN

BOSSTN

Boston Logan Intl

Tue 3/24

6:15 am-6:20 pm

2 stops32h 05m

London Stansted

Sat 3/28

9:45 pm-5:40 pm

2 stops23h 55m

$495

BostonLondon

BOS - LTN

BOSLTN

Boston Logan Intl

Tue 3/24

10:45 am-9:45 am

2 stops19h 00m

London Luton

Sat 3/28

9:00 pm-5:40 pm

2 stops24h 40m

$496

BostonLondon

BOS - LTN

BOSLTN

Boston Logan Intl

Thu 3/5

5:30 am-5:50 pm

3 stops31h 20m

London Luton

Mon 3/9

8:30 am-9:00 pm

2 stops16h 30m

$496

BostonLondon

BOS - STN

BOSSTN

Boston Logan Intl

Thu 3/5

7:25 pm-10:10 am

1 stop9h 45m

London Stansted

Thu 3/12

7:05 am-5:50 pm

1 stop14h 45m

$496

BostonLondon

BOS - STN

BOSSTN

Boston Logan Intl

Sat 2/21

1:00 pm-11:35 am

2 stops17h 35m

London Stansted

Sat 2/28

8:00 pm-6:02 pm

2 stops27h 02m

$498

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Thu 2/12

7:45 am-5:55 am

1 stop17h 10m

London Heathrow

Tue 2/17

9:00 am-8:20 pm

1 stop16h 20m

$516

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Mon 2/16

10:15 am-7:10 am

1 stop15h 55m

London Heathrow

Thu 2/19

11:10 am-6:35 pm

1 stop12h 25m

$518

BostonLondon

BOS - LGW

BOSLGW

Boston Logan Intl

Thu 4/2

8:50 pm-2:40 pm

1 stop12h 50m

London Gatwick

Sun 4/12

3:40 pm-9:45 pm

1 stop11h 05m

$519

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Tue 3/3

8:00 pm-7:50 am

Nonstop6h 50m

London Heathrow

Fri 3/13

6:20 am-2:30 pm

1 stop12h 10m

$520

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/2

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, April is the cheapest month in which you can book a flight from Maine to London (average of $596). Flying from Maine to London in December is currently the most expensive (average of $1,472). 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?

    Airlines like United Airlines, Icelandair, and Delta fly from Maine to London in about 6h 50m. The time it takes to get you to your destination can typically vary by up to 10h 20m. 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 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, April is the cheapest month in which you can book a flight from Maine to London (average of $596). Flying from Maine to London in December is currently the most expensive (average of $1,472). 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
Ilford
Hounslow
Croydon
Southend-on-Sea
Harrow
Eastleigh
Gatwick
Dartford
Dover
Winchester
Orpington
Watford
Hayes
Borehamwood
Aylesbury
Chipping Norton
Horley
Kingston upon Thames
Eastbourne
Sutton

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Maine to London

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Heathrow flights
Newark to Heathrow flights
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John F Kennedy Intl to Gatwick flights
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O'Hare Intl to Heathrow flights
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LaGuardia to Gatwick flights
Atlanta to Heathrow flights
John F Kennedy Intl to Luton flights
Miami to Heathrow flights
Boston to London City flights
Orlando to Heathrow flights
Newark to Stansted flights
Hobby to Heathrow flights
Reagan-National to Heathrow flights
Dulles Intl to Gatwick flights
Newark to Luton flights
Boston to Stansted flights
Newark to London City flights
Denver to Heathrow flights
Dulles Intl to London City flights
Dulles Intl to Stansted flights
Philadelphia to Heathrow flights
Minneapolis to Heathrow flights
Los Angeles to Gatwick flights
San Francisco to Gatwick flights
O'Hare Intl to Gatwick flights
Baltimore to Gatwick flights
Newark to Edinburgh flights
Austin to Heathrow flights
George Bush Intcntl to Heathrow flights
Los Angeles to Stansted flights
Reagan-National to Gatwick flights
Tampa to Heathrow flights
O'Hare Intl to London City flights
John F Kennedy Intl to Edinburgh flights
O'Hare Intl to Stansted flights
Charlotte to Heathrow flights
Los Angeles to London City flights
San Francisco to London City flights

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 February 5, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$648Average$1,006FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$757Average$997FlexibilityNo cancel feeOn-time71%
DeltaCheapest$765Average$1,083FlexibilityNo cancel feeOn-timeN/A

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