What is the cheapest airline that flies from Maine to London?

Austrian Airlines, Icelandair, and KLM are the most popular carriers operating from Maine to London

How many flights depart from Maine to London on average per week?

230 flights are operational weekly from Maine to London as of December 2025. The most popular departure day for this route is Sun, with 17% of flights per week taking off on this day.

How long does it take to fly to London?

Flight times from Maine to London vary, but if you’re flying out of Portland and flying into London Heathrow Airport (one of the most popular routes), then the duration is 9h 38m on average. Another popular route from Maine to London is flying from Bangor to London Heathrow Airport, which will take roughly 12h. Keep in mind that layovers or delays could extend your travel time.

When did momondo last update prices for flights from Maine to London?

Prices for flights from Maine to London refresh daily.

How many operators does momondo search for flights from Maine to London?

The number of operators available for flights from Maine to London is 9 as of December 2025.

How old do you have to be to fly from Maine to London?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Maine to London.

What documentation or ID do you need to fly to London?

The travel and health documents required for your trip to London can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at London. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

£145 Cheap Flights from Maine to London in 2025/26

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Find the cheapest flights from Maine to London

Round-trip

One-way

Last minute

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Cheap return flights

Enter your travel dates to find the best prices.

14:20 - 06:40

BOS

LHR

11h 20m1 stop

12:05 - 18:57

LHR

BOS

11h 52m1 stop

£376Austrian Airlines

Fri, 30 Jan - Sun, 1 Feb

22:40 - 12:00

BOS

LTN

32h 20m1 stop

09:20 - 20:55

LTN

BOS

16h 35m1 stop

£377Multiple Airlines

Sat, 17 Jan - Sat, 31 Jan

19:12 - 06:55

BOS

LHR

6h 43mdirect

09:20 - 12:16

LHR

BOS

7h 56mdirect

£377JetBlue

Tue, 20 Jan - Thu, 22 Jan

22:40 - 15:25

BOS

LGW

11h 45m1 stop

11:45 - 19:50

LGW

BOS

13h 05m1 stop

£377Iberia

Mon, 12 Jan - Thu, 15 Jan

20:40 - 17:40

BOS

LCY

16h 00m2 stops

13:30 - 20:00

LCY

BOS

11h 30m1 stop

£377Multiple Airlines

Mon, 12 Jan - Wed, 14 Jan

19:12 - 06:55

BOS

LHR

6h 43mdirect

09:20 - 12:16

LHR

BOS

7h 56mdirect

£378JetBlue

Mon, 12 Jan - Tue, 20 Jan

22:45 - 20:25

BOS

LGW

16h 40m2 stops

10:35 - 20:05

LGW

BOS

14h 30m1 stop

£378TAP AIR PORTUGAL

Tue, 14 Apr - Tue, 21 Apr

19:15 - 07:00

BOS

LHR

6h 45mdirect

19:40 - 15:15

LHR

BOS

24h 35m1 stop

£378Iberia

Mon, 12 Jan - Tue, 20 Jan

19:25 - 08:05

BOS

LHR

8h 40m1 stop

09:50 - 15:30

LHR

BOS

10h 40m1 stop

£379Aer Lingus

Sat, 28 Mar - Sat, 4 Apr

22:45 - 20:40

BOS

LGW

16h 55m2 stops

16:35 - 14:35

LGW

BOS

27h 00m1 stop

£380TAP AIR PORTUGAL

Thu, 8 Jan - Sat, 7 Feb

British Airways flights from Maine to London

Our best British Airways deals on Maine to London flight tickets

British Airways

31 Dec

BOS19:15Boston Logan Intl

6h 45m

LHR07:00London Heathrow

15 Jan

LHR13:30London Heathrow

7h 45m

BOS16:15Boston Logan Intl

£376

Find similar

British Airways

8 Jan

BOS19:15Boston Logan Intl

6h 45m

LHR07:00London Heathrow

11 Jan

LHR19:10London Heathrow

7h 45m

BOS21:55Boston Logan Intl

£382

Find similar

British Airways

26 Apr

BOS21:55Boston Logan Intl

6h 45m

LHR09:40London Heathrow

3 May

LHR11:00London Heathrow

7h 35m

BOS13:35Boston Logan Intl

£393

Find similar

Icelandair flights from Maine to London

Our best Icelandair deals on Maine to London flight tickets

Icelandair

21 Apr

BOS20:50Boston Logan Intl

10h 05m

1 stop

LHR11:55London Heathrow

28 Apr

LHR13:05London Heathrow

10h 45m

1 stop

BOS18:50Boston Logan Intl

£381

Find similar

Icelandair

26 Apr

BOS20:50Boston Logan Intl

12h 50m

1 stop

LGW14:40London Gatwick

1 May

LGW15:40London Gatwick

11h 30m

1 stop

BOS22:10Boston Logan Intl

£384

Find similar

Icelandair

10 Feb

BOS19:50Boston Logan Intl

10h 05m

1 stop

LGW10:55London Gatwick

19 Feb

LGW11:55London Gatwick

10h 55m

1 stop

BOS17:50Boston Logan Intl

£386

Find similar

Fly from

Fly to

Route

Depart

Return

Price

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Fri 30/1

14:20-06:40

1 stop11h 20m

London Heathrow

Sun 1/2

12:05-18:57

1 stop11h 52m

£376

BostonLondon

BOS - LTN

BOSLTN

Boston Logan Intl

Sat 17/1

22:40-12:00

1 stop32h 20m

London Luton

Sat 31/1

09:20-20:55

1 stop16h 35m

£377

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Tue 20/1

19:12-06:55

Nonstop6h 43m

London Heathrow

Thu 22/1

09:20-12:16

Nonstop7h 56m

£377

BostonLondon

BOS - LGW

BOSLGW

Boston Logan Intl

Mon 12/1

22:40-15:25

1 stop11h 45m

London Gatwick

Thu 15/1

11:45-19:50

1 stop13h 05m

£377

BostonLondon

BOS - LCY

BOSLCY

Boston Logan Intl

Mon 12/1

20:40-17:40

2 stops16h 00m

London City

Wed 14/1

13:30-20:00

1 stop11h 30m

£377

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Mon 12/1

19:12-06:55

Nonstop6h 43m

London Heathrow

Tue 20/1

09:20-12:16

Nonstop7h 56m

£378

BostonLondon

BOS - LGW

BOSLGW

Boston Logan Intl

Tue 14/4

22:45-20:25

2 stops16h 40m

London Gatwick

Tue 21/4

10:35-20:05

1 stop14h 30m

£378

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Mon 12/1

19:15-07:00

Nonstop6h 45m

London Heathrow

Tue 20/1

19:40-15:15

1 stop24h 35m

£378

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Sat 28/3

19:25-08:05

1 stop8h 40m

London Heathrow

Sat 4/4

09:50-15:30

1 stop10h 40m

£379

BostonLondon

BOS - LGW

BOSLGW

Boston Logan Intl

Thu 8/1

22:45-20:40

2 stops16h 55m

London Gatwick

Sat 7/2

16:35-14:35

1 stop27h 00m

£380

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Maine to London

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to London?

The cheapest month to fly to London from Maine is in October. Flight prices, which tend to average around £387, are often lower during this time because this is during the off-season. The month of September is another great option to travel to London, with average flight prices from Maine averaging around £408.

What is the cheapest day to depart on your flight to London?

Our data shows that Monday is the least expensive day to fly to London. Tickets to fly out on this day can be as low as £471. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from Maine to London for around £597.

What is the cheapest time of day to depart on your flight to London?

The cheapest time of day to fly to London is in the evening when flights can be purchased for as low as £505. Flights in the morning are often more expensive, with an average ticket price of £547.

How far in advance should I book a flight to London?

You are more likely to see cheaper flights to London from Maine when booking weeks ahead of your departure date. In general, you can expect to find flights to London for around £475 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from Maine for as low as £443 on momondo.

Cheap Maine to London flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Maine to London

Fastest flight time	6h 30m
Direct flights	Every day
Airports in London	6 airports

The fastest flight from Maine to London takes 6h 30m

Direct flights go from Maine to London every day.

There are 6 airports in London. From Maine there are direct flights to London Heathrow (LHR), London Gatwick (LGW).

Search flight deals

When did momondo last update prices for flights from Maine to London?
Prices for flights from Maine to London refresh daily.
How many operators does momondo search for flights from Maine to London?
The number of operators available for flights from Maine to London is 9 as of December 2025.
How old do you have to be to fly from Maine to London?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Maine to London.
What documentation or ID do you need to fly to London?
The travel and health documents required for your trip to London can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at London. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Eastbourne

Milton Keynes

Luton

Gatwick

Maidstone

Slough

Southend-on-Sea

Canterbury

Ipswich

Ilford

Guildford

Hayes

Chelmsford

Dover

Worthing

Colchester

Bedford

Ramsgate

Hounslow

Stansted

Why use momondo?

Why should I use momondo to find a flight deal from Maine to London?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to London from Maine.

Can I find flights from Maine to London with flexible booking policies on momondo?

Yes. All flights to London from Maine on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Maine to London?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Maine to London.

I’m not ready to book a flight from Maine to London right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Maine to London now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to London and let you know when they change.