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$193+ 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 3/8. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — LON
ene. 7 — ene. 141
mié. 1/7
mié. 1/14
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 diciembre 8, 2025.

This Kiwi.com deal was found by Cheapflights users on 12/7. 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.
lun. 12/810:10 pmBOS - LHR
1 stop13h 10mMultiple Airlines
lun. 12/1512:05 pmLHR - BOS
1 stop11h 43mMultiple Airlines
Deal found 12/7$504
This United Airlines deal was found by Cheapflights users on 12/8. 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.
mar. 12/95:30 amBOS - LHR
1 stop24h 20mUnited Airlines
vie. 12/121:25 pmLHR - BOS
1 stop30h 27mUnited Airlines
Deal found 12/8$505
This Air Canada deal was found by Cheapflights users on 12/6. 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.
vie. 12/125:30 amBOS - LHR
1 stop20h 40mAir Canada
jue. 1/229:00 amLHR - BOS
2 stops18h 37mAir Canada
Deal found 12/6$506
This Kiwi.com deal was found by Cheapflights users on 12/8. 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.
dom. 12/147:07 pmBOS - LHR
1 stop10h 43mMultiple Airlines
dom. 12/286:00 amLHR - BOS
1 stop13h 05mMultiple Airlines
Deal found 12/8$507
This United Airlines deal was found by Cheapflights users on 12/8. 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.
vie. 12/1210:30 amBOS - LHR
2 stops15h 40mUnited Airlines
mié. 12/246:35 amLHR - BOS
1 stop17h 00mUnited Airlines
Deal found 12/8$508
This Delta deal was found by Cheapflights users on 12/7. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/88:00 pmBOS - LHR
Nonstop6h 50mDelta
lun. 12/1511:45 amLHR - BOS
1 stop12h 10mDelta
Deal found 12/7$509
This Iberia deal was found by Cheapflights users on 12/7. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 12/73:46 pmBOS - LGW
2 stops22h 14mIberia
dom. 12/1411:45 amLGW - BOS
1 stop13h 05mIberia
Deal found 12/7$509
This Iberia deal was found by Cheapflights users on 12/7. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/317:15 pmBOS - LHR
Nonstop6h 45mIberia
dom. 5/1012:20 pmLHR - BOS
1 stop12h 30mIberia
Deal found 12/7$510
This Delta deal was found by Cheapflights users on 12/6. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/1211:25 amBOS - LHR
1 stop14h 40mDelta
vie. 1/236:20 amLHR - BOS
1 stop12h 20mDelta
Deal found 12/6$511
This Iberia deal was found by Cheapflights users on 12/7. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/912:03 pmBOS - LGW
2 stops17h 47mIberia
sáb. 12/1311:45 amLGW - BOS
1 stop13h 05mIberia
Deal found 12/7$512
This KLM deal was found by Cheapflights users on 12/7. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/94:46 pmBOS - LHR
1 stop10h 59mKLM
lun. 12/1511:45 amLHR - BOS
1 stop12h 10mKLM
Deal found 12/7$513
This oojo deal was found by Cheapflights users on 12/7. 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.
mié. 12/316:05 pmBOS - LGW
1 stop10h 45mTAP AIR PORTUGAL
jue. 1/154:00 pmLGW - BOS
1 stop27h 35mTAP AIR PORTUGAL
Deal found 12/7$513

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 diciembre 8, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$504
(JetBlue)

One-way from

$193
(Netflights)

Popular in

June

Cheapest in

October

Average price

$699
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 December 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 diciembre 8, 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

sáb. 2/14

6:40 pm-8:35 pm

1 stop20h 55m

London Heathrow

mié. 2/18

9:00 am-8:20 pm

1 stop16h 20m

$505

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

dom. 2/22

3:35 pm-9:20 am

1 stop12h 45m

London Heathrow

jue. 3/12

1:45 pm-9:20 pm

1 stop11h 35m

$508

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

jue. 2/26

6:00 am-8:35 pm

1 stop9h 35m

London Heathrow

mié. 3/11

1:45 pm-9:20 pm

1 stop11h 35m

$509

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

mar. 2/17

5:35 am-10:50 am

1 stop24h 15m

London Heathrow

dom. 2/22

1:25 pm-9:32 am

1 stop25h 07m

$512

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

jue. 2/12

10:15 am-7:10 am

1 stop15h 55m

London Heathrow

jue. 2/19

11:10 am-6:35 pm

1 stop12h 25m

$513

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

vie. 2/20

7:15 pm-6:50 am

Nonstop6h 35m

London Heathrow

dom. 3/1

6:20 am-1:30 pm

1 stop12h 10m

$514

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

mar. 3/17

8:10 pm-6:50 am

Nonstop6h 40m

London Heathrow

mar. 3/24

8:55 am-5:20 pm

1 stop12h 25m

$515

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

lun. 2/2

8:00 pm-7:50 am

Nonstop6h 50m

London Heathrow

mar. 2/10

6:20 am-1:40 pm

1 stop12h 20m

$515

BostonLondon

BOS - STN

BOSSTN

Boston Logan Intl

mar. 1/20

9:15 pm-2:20 pm

1 stop12h 05m

London Stansted

mar. 1/27

6:30 am-1:55 pm

1 stop12h 25m

$515

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

vie. 2/20

7:15 pm-6:50 am

Nonstop6h 35m

London Heathrow

mié. 2/25

9:00 am-4:20 pm

1 stop12h 20m

$515

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/6

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 $589). 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.

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 diciembre 8, 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, Icelandair, and KLM fly from Maine to London in about 9h 20m. The time it takes to get you to your destination can typically vary by up to 11h 35m. Airlines will cover a distance of 3274 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 $589). 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
Southend-on-Sea
Harrow
Eastleigh
Dartford
Dover
Winchester
Croydon
Orpington
Watford
Hayes
Borehamwood
Aylesbury
Chipping Norton
Horley
Kingston upon Thames
Wembley
Folkestone
Eastbourne

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 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 diciembre 8, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$648Average$874FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$786Average$895FlexibilityNo cancel feeOn-time71%
DeltaCheapest$825Average$1,083FlexibilityNo cancel feeOn-timeN/A

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