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 44% 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.

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

TAP AIR PORTUGAL, JetBlue, and Icelandair are the most popular carriers operating from Maine to London

How long does it take to fly to London?

If you’re flying from a popular airport in Maine, such as Bangor or Portland, and flying into London, then you can expect flight times to average 9h 48m and 10h 36m, respectively.

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

The number of flights available between Maine and London is 270 per week as of September 2025. The most frequent departure day is Tue, with 16% of weekly flights leaving on this day.

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 19 operators available for flights from Maine to London as of September 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.

$200 Cheap Flights from Maine to London in 2025/26

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from Maine to London

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

7:25 pm - 9:15 amBOS-LHR

8h 50m1 stop

10:00 am - 4:50 pmLHR-BOS

11h 50m1 stop

$467Aer Lingus

Find Deal

Tue, Nov 25 - Thu, Dec 4

9:50 pm - 11:05 pmBOS-LTN

20h 15m2 stops

6:00 am - 10:37 pmLTN-BOS

21h 37m2 stops

$467Multiple Airlines

Find Deal

Wed, Nov 26 - Mon, Dec 1

6:05 pm - 9:50 amBOS-LGW

10h 45m1 stop

10:40 am - 8:10 pmLGW-BOS

14h 30m1 stop

$468TAP AIR PORTUGAL

Find Deal

Tue, Nov 18 - Thu, Nov 27

10:15 am - 8:30 amBOS-LHR

17h 15m2 stops

9:00 am - 7:12 pmLHR-BOS

15h 12m2 stops

$469Air Canada

Find Deal

Tue, Nov 18 - Sat, Nov 22

10:45 pm - 3:45 pmBOS-LGW

12h 00m1 stop

9:35 am - 8:10 pmLGW-BOS

39h 35m2 stops

$471TAP AIR PORTUGAL

Find Deal

Fri, Nov 28 - Wed, Dec 3

9:50 pm - 5:50 pmBOS-LGW

15h 00m1 stop

6:40 pm - 8:00 pmLGW-BOS

30h 20m1 stop

$476SWISS

Find Deal

Mon, Nov 10 - Sun, Nov 23

9:50 pm - 5:50 pmBOS-LGW

15h 00m1 stop

6:40 pm - 8:20 pmLGW-BOS

30h 40m1 stop

$477SWISS

Find Deal

Tue, Nov 11 - Sun, Nov 16

9:48 pm - 9:35 amBOS-LGW

6h 47mnonstop

12:10 pm - 3:08 pmLGW-BOS

7h 58mnonstop

$479JetBlue

Find Deal

Wed, Oct 8 - Sun, Oct 12

9:48 pm - 9:35 amBOS-LGW

6h 47mnonstop

12:10 pm - 3:08 pmLGW-BOS

7h 58mnonstop

$494JetBlue

Find Deal

Wed, Oct 8 - Fri, Oct 24

10:15 am - 6:30 amBOS-LHR

15h 15m2 stops

9:00 am - 9:27 pmLHR-BOS

17h 27m2 stops

$505Air Canada

Find Deal

Wed, Nov 19 - Tue, Nov 25

Air Canada flights from Maine to London

Our best Air Canada deals on Maine to London flight tickets

Air Canada

Nov 18

BOS10:15 amBoston Logan Intl

17h 15m

2 stops

LHR8:30 amLondon Heathrow

Nov 22

LHR9:00 amLondon Heathrow

15h 12m

2 stops

BOS7:12 pmBoston Logan Intl

$469

Find similar

Air Canada

Oct 3

BOS6:00 amBoston Logan Intl

24h 50m

1 stop

LHR11:50 amLondon Heathrow

Oct 15

LHR9:30 amLondon Heathrow

10h 00m

1 stop

BOS2:30 pmBoston Logan Intl

$494

Find similar

Air Canada

Oct 4

BOS6:30 pmBoston Logan Intl

31h 00m

1 stop

LHR6:30 amLondon Heathrow

Oct 9

LHR12:40 pmLondon Heathrow

9h 58m

1 stop

BOS5:38 pmBoston Logan Intl

$496

Find similar

Iberia flights from Maine to London

Our best Iberia deals on Maine to London flight tickets

Iberia

Jan 12

BOS6:55 pmBoston Logan Intl

6h 35m

LHR6:30 amLondon Heathrow

Jan 19

LHR9:55 amLondon Heathrow

16h 00m

1 stop

BOS8:55 pmBoston Logan Intl

$494

Find similar

Iberia

Dec 1

BOS7:15 pmBoston Logan Intl

6h 45m

LHR7:00 amLondon Heathrow

Dec 8

LHR9:15 amLondon Heathrow

15h 35m

1 stop

BOS7:50 pmBoston Logan Intl

$496

Find similar

Iberia

Oct 3

BOS4:35 pmBoston Logan Intl

13h 20m

1 stop

LGW10:55 amLondon Gatwick

Oct 10

LGW3:05 pmLondon Gatwick

31h 10m

1 stop

BOS5:15 pmBoston Logan Intl

$498

Find similar

Fly from

Fly to

Route

Depart

Return

Price

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Tue 11/25

7:25 pm-9:15 am

1 stop8h 50m

London Heathrow

Thu 12/4

10:00 am-4:50 pm

1 stop11h 50m

$467

BostonLondon

BOS - LTN

BOSLTN

Boston Logan Intl

Wed 11/26

9:50 pm-11:05 pm

2 stops20h 15m

London Luton

Mon 12/1

6:00 am-10:37 pm

2 stops21h 37m

$467

BostonLondon

BOS - LGW

BOSLGW

Boston Logan Intl

Tue 11/18

6:05 pm-9:50 am

1 stop10h 45m

London Gatwick

Thu 11/27

10:40 am-8:10 pm

1 stop14h 30m

$468

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Tue 11/18

10:15 am-8:30 am

2 stops17h 15m

London Heathrow

Sat 11/22

9:00 am-7:12 pm

2 stops15h 12m

$469

BostonLondon

BOS - LGW

BOSLGW

Boston Logan Intl

Fri 11/28

10:45 pm-3:45 pm

1 stop12h 00m

London Gatwick

Wed 12/3

9:35 am-8:10 pm

2 stops39h 35m

$471

BostonLondon

BOS - LGW

BOSLGW

Boston Logan Intl

Mon 11/10

9:50 pm-5:50 pm

1 stop15h 00m

London Gatwick

Sun 11/23

6:40 pm-8:00 pm

1 stop30h 20m

$476

BostonLondon

BOS - LGW

BOSLGW

Boston Logan Intl

Tue 11/11

9:50 pm-5:50 pm

1 stop15h 00m

London Gatwick

Sun 11/16

6:40 pm-8:20 pm

1 stop30h 40m

$477

BostonLondon

BOS - LGW

BOSLGW

Boston Logan Intl

Wed 10/8

9:48 pm-9:35 am

Nonstop6h 47m

London Gatwick

Sun 10/12

12:10 pm-3:08 pm

Nonstop7h 58m

$479

BostonLondon

BOS - LGW

BOSLGW

Boston Logan Intl

Wed 10/8

9:48 pm-9:35 am

Nonstop6h 47m

London Gatwick

Fri 10/24

12:10 pm-3:08 pm

Nonstop7h 58m

$494

BostonLondon

BOS - LHR

BOSLHR

Boston Logan Intl

Wed 11/19

10:15 am-6:30 am

2 stops15h 15m

London Heathrow

Tue 11/25

9:00 am-9:27 pm

2 stops17h 27m

$505

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 $638, are often lower during this time because this is during the off-season. The month of February is another great option to travel to London, with average flight prices from Maine averaging around $713.

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 $788. If your travel schedule is flexible, try to avoid departing on a Friday because tickets tend to average around $936. 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 $827 when looking at flights departing at noon. Flights to London are more costly in the afternoon, with an average ticket price of $869. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

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	1 airport

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

Direct flights go from Maine to London every day.

There is 1 airport near London: London Heathrow (LHR)

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 19 operators available for flights from Maine to London as of September 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 8,926 reviews	Search United Airlines flights
American Airlines	PriceFrom $802	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Delta	PriceFrom $825	Free Cancellation	Rating 7.9 7,973 reviews	Search Delta flights

Hounslow

Gatwick

Luton

Dover

Milton Keynes

Slough

Guildford

Hayes

Dartford

Stansted

Crawley

Chelmsford

Brentwood

Ilford

Folkestone

Colchester

Romford

Watford

Wembley

Richmond

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.