What airlines fly to London?

United Airlines, Delta and American Airlines are the top three most popular airlines that fly to London from Maine according to our data. United Airlines is the first choice among our users, with 42% of people opting to fly with this airline when traveling to London. Keep in mind that there are 3 different airlines that fly to London on a routine basis, so you have a few additional options to choose from.

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

The number of flights available between Maine and London is 230 per week as of December 2025. The most frequent departure day is Sun, with 17% of weekly flights leaving on this day.

How long does it take to fly to London?

If you’re flying from a popular airport in Maine, such as Portland or Bangor, and flying into London, then you can expect flight times to average 9h 45m and 12h, respectively.

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

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

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

Prices for flights from Maine to London are updated daily.

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

There are 18 operators available for flights from Maine to London 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 offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify 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 necessary travel and health documents for your London trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$194 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 round-trip flights

Enter your travel dates to find the best prices.

7:15 pm - 7:00 am

BOS

LHR

6h 45mnonstop

1:30 pm - 4:15 pm

LHR

BOS

7h 45mnonstop

$503British Airways

Wed, Dec 31 - Thu, Jan 15

7:12 pm - 6:55 am

BOS

LHR

6h 43mnonstop

9:20 am - 12:16 pm

LHR

BOS

7h 56mnonstop

$504JetBlue

Fri, Jan 23 - Sun, Jan 25

10:40 pm - 11:20 pm

BOS

LGW

19h 40m1 stop

9:05 am - 8:55 pm

LGW

BOS

16h 50m1 stop

$504Multiple Airlines

Mon, Feb 23 - Mon, Mar 2

8:40 pm - 5:40 pm

BOS

LCY

16h 00m2 stops

1:30 pm - 8:00 pm

LCY

BOS

11h 30m1 stop

$504Multiple Airlines

Mon, Jan 12 - Wed, Jan 14

10:45 pm - 8:25 pm

BOS

LGW

16h 40m2 stops

10:35 am - 8:45 pm

LGW

BOS

15h 10m1 stop

$505TAP AIR PORTUGAL

Tue, Apr 14 - Wed, Apr 22

8:50 pm - 10:55 am

BOS

LGW

10h 05m1 stop

3:40 pm - 10:10 pm

LGW

BOS

11h 30m1 stop

$506Icelandair

Wed, Mar 18 - Wed, Apr 1

8:50 pm - 2:40 pm

BOS

LGW

12h 50m1 stop

3:40 pm - 6:50 pm

LGW

BOS

32h 10m1 stop

$507Icelandair

Tue, Apr 21 - Mon, Apr 27

7:25 pm - 8:05 am

BOS

LHR

8h 40m1 stop

9:50 am - 3:30 pm

LHR

BOS

10h 40m1 stop

$507Aer Lingus

Sat, Mar 28 - Sat, Apr 4

10:45 pm - 8:40 pm

BOS

LGW

16h 55m2 stops

4:35 pm - 2:35 pm

LGW

BOS

27h 00m1 stop

$508TAP AIR PORTUGAL

Thu, Jan 8 - Sat, Feb 7

7:25 pm - 9:15 am

BOS

LHR

8h 50m1 stop

9:50 am - 3:30 pm

LHR

BOS

10h 40m1 stop

$512Aer Lingus

Thu, Jan 15 - Mon, May 11

Virgin Atlantic flights from Maine to London

Our best Virgin Atlantic deals on Maine to London flight tickets

Virgin Atlantic

Jan 17

BOS8:00 pmBoston Logan Intl

6h 50m

LHR7:50 amLondon Heathrow

Jan 23

LHR1:05 pmLondon Heathrow

7h 55m

BOS4:00 pmBoston Logan Intl

$503

Find similar

Virgin Atlantic

Jan 12

BOS7:10 pmBoston Logan Intl

17h 10m

1 stop

LCY5:20 pmLondon City

Jan 14

LCY9:20 amLondon City

17h 58m

2 stops

BOS10:18 pmBoston Logan Intl

$531

Find similar

Virgin Atlantic

Dec 24

BOS8:50 pmBoston Logan Intl

31h 40m

1 stop

LCY9:30 amLondon City

Dec 29

LCY9:20 amLondon City

14h 30m

1 stop

BOS6:50 pmBoston Logan Intl

$1,673

Find similar

Air Canada flights from Maine to London

Our best Air Canada deals on Maine to London flight tickets

Air Canada

Jan 12

BOS10:15 amBoston Logan Intl

15h 15m

2 stops

LHR6:30 amLondon Heathrow

Jan 20

LHR6:50 amLondon Heathrow

13h 02m

2 stops

BOS2:52 pmBoston Logan Intl

$509

Find similar

Air Canada

Dec 30

BOS6:40 pmBoston Logan Intl

20h 55m

1 stop

LHR8:35 pmLondon Heathrow

Jan 11

LHR9:00 amLondon Heathrow

13h 50m

1 stop

BOS5:50 pmBoston Logan Intl

$524

Find similar

Air Canada

Jan 11

BOS10:15 amBoston Logan Intl

18h 05m

2 stops

LHR9:20 amLondon Heathrow

Jan 18

LHR6:50 amLondon Heathrow

17h 52m

2 stops

BOS7:42 pmBoston Logan Intl

$529

Find similar

Fly from

Fly to

Route

Depart

Return

Price

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Wed 12/31

7:15 pm-7:00 am

Nonstop6h 45m

London Heathrow

Thu 1/15

1:30 pm-4:15 pm

Nonstop7h 45m

$503

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Fri 1/23

7:12 pm-6:55 am

Nonstop6h 43m

London Heathrow

Sun 1/25

9:20 am-12:16 pm

Nonstop7h 56m

$504

BostonLondon

BOS - LGW

BOSLGW

Boston Logan Intl

Mon 2/23

10:40 pm-11:20 pm

1 stop19h 40m

London Gatwick

Mon 3/2

9:05 am-8:55 pm

1 stop16h 50m

$504

BostonLondon

BOS - LCY

BOSLCY

Boston Logan Intl

Mon 1/12

8:40 pm-5:40 pm

2 stops16h 00m

London City

Wed 1/14

1:30 pm-8:00 pm

1 stop11h 30m

$504

BostonLondon

BOS - LGW

BOSLGW

Boston Logan Intl

Tue 4/14

10:45 pm-8:25 pm

2 stops16h 40m

London Gatwick

Wed 4/22

10:35 am-8:45 pm

1 stop15h 10m

$505

BostonLondon

BOS - LGW

BOSLGW

Boston Logan Intl

Wed 3/18

8:50 pm-10:55 am

1 stop10h 05m

London Gatwick

Wed 4/1

3:40 pm-10:10 pm

1 stop11h 30m

$506

BostonLondon

BOS - LGW

BOSLGW

Boston Logan Intl

Tue 4/21

8:50 pm-2:40 pm

1 stop12h 50m

London Gatwick

Mon 4/27

3:40 pm-6:50 pm

1 stop32h 10m

$507

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Sat 3/28

7:25 pm-8:05 am

1 stop8h 40m

London Heathrow

Sat 4/4

9:50 am-3:30 pm

1 stop10h 40m

$507

BostonLondon

BOS - LGW

BOSLGW

Boston Logan Intl

Thu 1/8

10:45 pm-8:40 pm

2 stops16h 55m

London Gatwick

Sat 2/7

4:35 pm-2:35 pm

1 stop27h 00m

$508

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Thu 1/15

7:25 pm-9:15 am

1 stop8h 50m

London Heathrow

Mon 5/11

9:50 am-3:30 pm

1 stop10h 40m

$512

Flights are sorted by cheapest round-trip 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 $517, 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 $546.

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

The cheapest day to depart from Maine to London is on a Tuesday. Travelers who choose to depart for London on a Tuesday will often find tickets for as low as $657. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $719. These prices are subject to change though, so be sure to set up a Price Alert for flights to London.

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

Flying to London from Maine at noon is the least expensive time of day to depart. momondo users have found prices as low as $623 when looking at flights departing at noon. Flights to London are more costly in the evening, with an average ticket price of $696. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.

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 $635 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from Maine for as low as $593 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 are updated daily.
How many operators does momondo search for flights from Maine to London?
There are 18 operators available for flights from Maine to London 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 offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify 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 necessary travel and health documents for your London trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Maine to London

Compare and see reviews for airlines that fly from Maine to London with momondo

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $648	Free Cancellation	Rating 7.4 9,092 reviews	Search United Airlines flights
Delta	PriceFrom $765	Free Cancellation	Rating 7.9 8,008 reviews	Search Delta flights
American Airlines	PriceFrom $786	Free Cancellation	Rating 7.2 11,051 reviews	Search American Airlines flights

Gatwick

Hounslow

Milton Keynes

Dover

Luton

Slough

Guildford

Hayes

Dartford

Crawley

Brentwood

Wembley

Watford

Ilford

Cobham

Folkestone

Romford

Richmond

Uxbridge

Stansted

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Maine to London for you.

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

Yes. momondo enables you to select and highlight flights to London from Maine with this policy.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to London from Maine.

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

Yes momondo offers price alerts on flights to London from Maine. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.