HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
London

$227+ 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 8/23. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — LON
Jul 5 — Jul 121
Sat 7/5
Sat 7/12
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Maine to London with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 June 30, 2025.

Round-trip from

$518
(Iberia)

One-way from

$227
(FlightHub)

Popular in

July

Cheapest in

October

Average price

$1,208
From Maine to London (LON)
Search Deals
One-way flight from Maine to London (LON)
Search Deals
Highest demand for flights based on searches. 22% potential increase in price ($244 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 June 2025
Search Deals

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 June 30, 2025.

This Gotogate deal was found by Cheapflights users on 6/30. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/2610:00 pmBOS - LHR
Nonstop6h 30mIberia
Tue 12/28:10 amLHR - BOS
1 stop12h 05mIberia
Deal found 6/30$517
This SWISS deal was found by Cheapflights users on 6/30. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/205:05 pmBOS - LGW
1 stop19h 50mSWISS
Mon 9/16:35 pmLGW - BOS
1 stop25h 50mSWISS
Deal found 6/30$517
This Iberia deal was found by Cheapflights users on 6/30. 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.
Fri 9/129:20 pmBOS - LGW
1 stop17h 40mIberia
Fri 9/1911:35 amLGW - BOS
2 stops16h 15mIberia
Deal found 6/30$518
This United Airlines deal was found by Cheapflights users on 6/30. 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.
Thu 8/145:50 amBOS - LHR
1 stop23h 10mUnited Airlines
Mon 8/256:50 amLHR - BOS
2 stops14h 38mUnited Airlines
Deal found 6/30$519
This Mytrip deal was found by Cheapflights users on 6/30. 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 8/103:20 pmBOS - STN
2 stops14h 15mMultiple Airlines
Tue 8/1910:35 pmSTN - BOS
2 stops22h 20mMultiple Airlines
Deal found 6/30$519
This British Airways deal was found by Cheapflights users on 6/30. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/197:30 amBOS - LHR
Nonstop6h 25mBritish Airways
Wed 9/32:40 pmLHR - BOS
Nonstop7h 30mBritish Airways
Deal found 6/30$520
This Booking.com deal was found by Cheapflights users on 6/30. 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.
Fri 8/1512:54 pmBOS - LGW
1 stop14h 16mBritish Airways
Tue 8/263:05 pmLGW - BOS
1 stop12h 54mBritish Airways
Deal found 6/30$520
This Delta deal was found by Cheapflights users on 6/30. 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.
Sun 8/1010:45 pmBOS - LHR
Nonstop6h 45mDelta
Tue 8/199:40 amLHR - BOS
Nonstop7h 35mDelta
Deal found 6/30$521
This deal was found by Cheapflights users on 6/30. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/28:50 pmBOS - LGW
1 stop12h 50mIcelandair
Sun 10/53:40 pmLGW - BOS
1 stop11h 20mIcelandair
Deal found 6/30$521
This Air Canada deal was found by Cheapflights users on 6/30. 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.
Tue 8/1912:15 pmBOS - LHR
2 stops16h 45mAir Canada
Mon 9/86:50 amLHR - BOS
2 stops16h 20mAir Canada
Deal found 6/30$522
This Kiwi.com deal was found by Cheapflights users on 6/30. 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.
Mon 10/65:30 pmBOS - LTN
1 stop10h 30mMultiple Airlines
Thu 10/1612:35 pmLTN - BOS
1 stop11h 10mMultiple Airlines
Deal found 6/30$522
This JetBlue deal was found by Cheapflights users on 6/30. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/139:55 pmBOS - LGW
Nonstop6h 40mJetBlue
Sat 8/1612:10 pmLGW - BOS
Nonstop7h 53mJetBlue
Deal found 6/30$522

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 June 30, 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 - LGW

BOSLGW

Boston Logan Intl

Wed 8/20

5:05 pm-5:55 pm

1 stop19h 50m

London Gatwick

Tue 9/2

6:35 pm-3:25 pm

1 stop25h 50m

$517

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Thu 9/4

8:05 pm-7:50 am

Nonstop6h 45m

London Heathrow

Fri 9/12

8:55 am-11:15 am

Nonstop7h 20m

$518

BostonLondon

BOS - LGW

BOSLGW

Boston Logan Intl

Fri 9/12

9:20 pm-8:00 pm

1 stop17h 40m

London Gatwick

Fri 9/19

11:35 am-10:50 pm

2 stops16h 15m

$518

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Thu 8/14

5:50 am-10:00 am

1 stop23h 10m

London Heathrow

Mon 8/25

6:50 am-4:28 pm

2 stops14h 38m

$519

BostonLondon

BOS - STN

BOSSTN

Boston Logan Intl

Sun 8/10

3:20 pm-10:35 am

2 stops14h 15m

London Stansted

Tue 8/19

10:35 pm-3:55 pm

2 stops22h 20m

$519

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Tue 8/19

7:30 am-6:55 pm

Nonstop6h 25m

London Heathrow

Wed 9/3

2:40 pm-5:10 pm

Nonstop7h 30m

$520

BostonLondon

BOS - LGW

BOSLGW

Boston Logan Intl

Fri 8/15

12:54 pm-8:10 am

1 stop14h 16m

London Gatwick

Tue 8/26

3:05 pm-10:59 pm

1 stop12h 54m

$520

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Sun 8/10

10:45 pm-10:30 am

Nonstop6h 45m

London Heathrow

Tue 8/19

9:40 am-12:15 pm

Nonstop7h 35m

$521

BostonLondon

BOS - LGW

BOSLGW

Boston Logan Intl

Thu 10/2

8:50 pm-2:40 pm

1 stop12h 50m

London Gatwick

Sun 10/5

3:40 pm-10:00 pm

1 stop11h 20m

$521

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Tue 8/19

12:15 pm-10:00 am

2 stops16h 45m

London Heathrow

Mon 9/8

6:50 am-6:10 pm

2 stops16h 20m

$522

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/30

Showing 1-10 of 60 results
1
2
3
...
6

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, November is the cheapest month in which you can book a flight from Maine to London (average of $661). Flying from Maine to London in June is currently the most expensive (average of $1,098). 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 June 30, 2025.

When flying from Maine to London, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How much does it cost to fly round-trip from Maine to London?

Reviews of airlines servicing London

Get insights into the airlines that provide service to London. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to London. Reviews last updated June 30, 2025.
See what other customers who have flown with Delta, KLM, and Finnair from Maine to London have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,973 reviews

Comfort

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,973 reviews
Delta
8.0
Very good
7,973 reviews

Comfort

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
KLM
7.8
Good
1,365 reviews
Delta
8.0
Very good
7,973 reviews

Comfort

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Finnair
7.6
Good
1,299 reviews
Delta
8.0
Very good
7,973 reviews

Comfort

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
SWISS
7.5
Good
1,654 reviews
Delta
8.0
Very good
7,973 reviews

Comfort

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,852 reviews
Delta
8.0
Very good
7,973 reviews

Comfort

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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.

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

    For one-way options, check prices for Icelandair. According to our data, you can fly for as low as $227. Users have also found prices from $228 and $230 on United Airlines and Air Canada, 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, November is the cheapest month in which you can book a flight from Maine to London (average of $661). Flying from Maine to London in June is currently the most expensive (average of $1,098). 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 Maine?

Book flights to Maine if you plan to visit one of these locations
Hayes
Hounslow
Thornton Heath
Canterbury
Harrow
Dover
Gatwick
Orpington
Watford
Croydon
Folkestone
Borehamwood
Aylesbury
Chelmsford
Brentwood
Chichester
Arundel
Milton Keynes
Bishop's Stortford
Dartford

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
John F Kennedy Intl to Gatwick flights
Los Angeles to Heathrow flights
John F Kennedy Intl to London City flights
Boston to Heathrow flights
LaGuardia to Heathrow flights
Dulles Intl to Heathrow flights
Newark to Gatwick flights
O'Hare Intl to Heathrow flights
Dallas/Fort Worth to Heathrow flights
Seattle to Heathrow flights
Baltimore to Heathrow flights
Boston to Gatwick flights
San Francisco to Heathrow flights
John F Kennedy Intl to Stansted flights
LaGuardia to Gatwick flights
John F Kennedy Intl to Luton flights
Newark to London City flights
Atlanta to Heathrow flights
Miami to Heathrow flights
Dulles Intl to Gatwick flights
Denver to Heathrow flights
Boston to London City flights
Reagan-National to Heathrow flights
Dulles Intl to London City flights
Los Angeles to London City flights
Philadelphia to Heathrow flights
Newark to Stansted flights
Orlando to Heathrow flights
Baltimore to Gatwick flights
Hobby to Heathrow flights
John F Kennedy Intl to Edinburgh flights
Reagan-National to Gatwick flights
Los Angeles to Gatwick flights
Dallas/Fort Worth to Gatwick flights
O'Hare Intl to Gatwick flights
O'Hare Intl to London City flights
Seattle to Gatwick flights
Charlotte to Heathrow flights
Newark to Luton flights
Newark to Edinburgh flights
San Francisco to Gatwick flights
George Bush Intcntl to Heathrow flights
Detroit to Heathrow flights
San Francisco to London City flights
Nashville to Heathrow flights
Minneapolis to Heathrow flights
Boston to Edinburgh flights
Seattle to London City flights

Top 4 airlines flying from Maine to London

Discover the top 4 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 June 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$586Average$678FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$611Average$819FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$786Average$886FlexibilityNo cancel feeOn-time71%
DeltaCheapest$825Average$963FlexibilityNo cancel feeOn-timeN/A

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.