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$224+ 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 7/25. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — LON
Mar 21 — Mar 281
Sat 3/21
Sat 3/28
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 19, 2026.

This oojo deal was found by Cheapflights users on 2/16. 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.
Mon 5/1111:00 pm
BOS
-
LHR
1 stop16h 20m
Icelandair
Mon 6/19:25 pm
LHR
-
BOS
1 stop29h 20m
Icelandair
Deal found 2/16$486
This Mytrip deal was found by Cheapflights users on 2/16. 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 3/310:15 am
BOS
-
LGW
3 stops19h 35m
Multiple Airlines
Sun 3/89:35 pm
LGW
-
BOS
2 stops24h 27m
Multiple Airlines
Deal found 2/16$486
This Mytrip deal was found by Cheapflights users on 2/15. 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 3/310:45 am
BOS
-
STN
2 stops18h 05m
Multiple Airlines
Sun 3/86:30 am
STN
-
BOS
2 stops35h 40m
Multiple Airlines
Deal found 2/15$486
This Flightnetwork deal was found by Cheapflights users on 2/16. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/196:40 pm
BOS
-
LHR
1 stop20h 55m
Air Canada
Wed 2/256:00 am
LHR
-
BOS
2 stops18h 42m
Air Canada
Deal found 2/16$487
This Mytrip deal was found by Cheapflights users on 2/15. 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.
Fri 3/276:10 pm
BOS
-
LTN
1 stop17h 15m
Multiple Airlines
Sat 4/411:00 am
LTN
-
BOS
1 stop12h 50m
Multiple Airlines
Deal found 2/15$487
This Mytrip deal was found by Cheapflights users on 2/16. 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 2/281:00 pm
BOS
-
LGW
2 stops16h 35m
Multiple Airlines
Sat 3/76:55 pm
LGW
-
BOS
2 stops23h 15m
Multiple Airlines
Deal found 2/16$487
This Mytrip deal was found by Cheapflights users on 2/17. 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 3/2410:15 am
BOS
-
STN
3 stops24h 05m
Multiple Airlines
Sun 3/2910:00 pm
STN
-
BOS
2 stops24h 40m
Multiple Airlines
Deal found 2/17$487
This Flighttix deal was found by Cheapflights users on 2/18. 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 Flighttix is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/196:40 pm
BOS
-
LHR
1 stop20h 55m
Multiple Airlines
Wed 2/251:45 pm
LHR
-
BOS
1 stop11h 35m
Multiple Airlines
Deal found 2/18$488
This Mytrip deal was found by Cheapflights users on 2/18. 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 3/115:30 am
BOS
-
LTN
3 stops34h 30m
Multiple Airlines
Wed 3/183:35 pm
LTN
-
BOS
2 stops32h 00m
Multiple Airlines
Deal found 2/18$488
This FlightHub deal was found by Cheapflights users on 2/17. 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
Thu 5/283:40 pm
LGW
-
BOS
1 stop11h 05m
Icelandair
Deal found 2/17$488
This Mytrip deal was found by Cheapflights users on 2/18. 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 2/2810:45 am
BOS
-
STN
2 stops21h 35m
Multiple Airlines
Sat 3/75:00 pm
STN
-
BOS
2 stops25h 10m
Multiple Airlines
Deal found 2/18$488
This FlightHub deal was found by Cheapflights users on 2/17. 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
-
LHR
1 stop10h 05m
Icelandair
Thu 5/281:05 pm
LHR
-
BOS
1 stop10h 45m
Icelandair
Deal found 2/17$489

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 19, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$486
(oojo)

One-way from

$224
(KLM)

Popular in

July

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. 19% potential increase in price ($203 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($37 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 19, 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 - LTN

BOSLTN

Boston Logan Intl

Mon 4/20

9:20 pm-1:45 pm

1 stop11h 25m

London Luton

Thu 4/30

8:00 am-4:10 pm

1 stop13h 10m

$487

BostonLondon

BOS - LTN

BOSLTN

Boston Logan Intl

Tue 3/17

10:45 am-12:25 pm

3 stops21h 40m

London Luton

Wed 3/25

6:50 am-9:32 am

2 stops30h 42m

$489

BostonLondon

BOS - LTN

BOSLTN

Boston Logan Intl

Thu 3/19

5:30 am-4:00 pm

3 stops30h 30m

London Luton

Sun 3/29

11:00 am-5:40 pm

2 stops35h 40m

$491

BostonLondon

BOS - LTN

BOSLTN

Boston Logan Intl

Thu 3/19

5:25 pm-8:55 pm

2 stops23h 30m

London Luton

Tue 3/24

8:25 am-7:35 pm

2 stops15h 10m

$497

BostonLondon

BOS - LTN

BOSLTN

Boston Logan Intl

Wed 3/25

10:50 pm-11:05 pm

2 stops20h 15m

London Luton

Mon 3/30

8:15 am-3:10 pm

2 stops35h 55m

$499

BostonLondon

BOS - LGW

BOSLGW

Boston Logan Intl

Wed 2/25

7:50 pm-10:55 am

1 stop10h 05m

London Gatwick

Tue 3/17

11:55 am-6:50 pm

1 stop10h 55m

$509

BostonLondon

BOS - LGW

BOSLGW

Boston Logan Intl

Sun 5/3

11:00 pm-2:40 pm

1 stop10h 40m

London Gatwick

Tue 5/12

1:00 pm-6:50 pm

1 stop10h 50m

$510

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Sun 3/15

7:05 am-9:20 pm

1 stop10h 15m

London Heathrow

Wed 3/18

1:45 pm-9:20 pm

1 stop11h 35m

$513

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Thu 3/12

7:05 am-8:35 pm

1 stop9h 30m

London Heathrow

Thu 3/19

1:45 pm-9:20 pm

1 stop11h 35m

$514

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Fri 3/20

5:45 am-10:50 am

1 stop25h 05m

London Heathrow

Sun 3/29

2:05 pm-9:52 am

1 stop24h 47m

$517

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/16

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 $597). 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.

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 Icelandair, United Airlines, and Delta 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 35m. 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 $597). 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
Croydon
Hounslow
Southend-on-Sea
Harrow
Eastleigh
Gatwick
Dartford
Dover
Winchester
Orpington
Watford
Hayes
Borehamwood
Aylesbury
Chipping Norton
Kingston upon Thames
Eastbourne
Sutton
Slough

Browse thousands of different options on Cheapflights for your next trip

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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 2 airlines flying from Maine to London

Discover the top 2 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 19, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$648Average$818FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$757Average$1,029FlexibilityNo cancel feeOn-time71%

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