How does KAYAK find such low prices on flights from Maine to London?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Maine to London. Visit our flight page for the latest deals!>/a>

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Maine to London?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London from Maine is likely to change within 7 days, so travelers know whether to wait or book now. Visit our flight page for the latest deals!>/a>

What is the Hacker Fare option on flights from Maine to London?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to London with an airline and back to Maine with another airline. Visit our flight page for the latest deals!>/a>

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Maine to London?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to London from Maine up to 3 days before/after your preferred dates. You can then pick the flights that suit you best. Visit our flight page for the latest deals!>/a>

$194 CHEAP FLIGHTS from Maine to London

KAYAK searches hundreds of travel sites at once for deals on flights to London

...and more

Travelers love KAYAK

41,299,237 searches in the past 7 days on KAYAK

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Filter your dealsChoose cabin class, free Wi-Fi and more.

Cheapest round-trip

$501

Overall average: $671

Aer Lingus

Wed 5/6Sun 5/10

BOS - LHR • 1 stop

Cheapest non-stop

$502

Typical prices: $512-$701

Virgin Atlantic

Thu 1/8Wed 1/14

BOS - LHR • Non-stop

Start a new search

KAYAK searches 100s of sites at once to find you the best travel deals.

We hope you love your trip to London!

Flight Deals

Cheap Flights from Maine to London

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Maine to London that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Direct

Recent round-trip flight deals from Maine to London

Wed, May 6 - Sun, May 10

6:35 pm - 9:05 am

BOS

LHR

9h 30m1 stop

9:50 am - 3:30 pm

LHR

BOS

10h 40m1 stop

$501Aer Lingus

Thu, Jan 8 - Thu, Jan 15

10:45 pm - 3:50 pm

BOS

LGW

12h 05m1 stop

10:40 am - 8:10 pm

LGW

BOS

14h 30m1 stop

$501TAP AIR PORTUGAL

Fri, Jan 16 - Tue, Jan 20

2:20 pm - 10:50 am

BOS

LHR

15h 30m1 stop

6:35 am - 6:57 pm

LHR

BOS

17h 22m2 stops

$502Lufthansa

Tue, Jan 20 - Tue, Jan 27

9:50 pm - 5:50 pm

BOS

LGW

15h 00m1 stop

6:40 pm - 8:20 pm

LGW

BOS

30h 40m1 stop

$502SWISS

Mon, Jan 19 - Sun, Jan 25

10:15 am - 6:20 pm

BOS

STN

27h 05m3 stops

9:45 pm - 6:02 pm

STN

BOS

25h 17m2 stops

$502Multiple Airlines

Sun, Jan 11 - Sun, Jan 18

3:40 pm - 7:10 am

BOS

LHR

10h 30m1 stop

6:50 am - 2:52 pm

LHR

BOS

13h 02m2 stops

$503Multiple Airlines

Fri, Jan 9 - Mon, Jan 12

7:50 pm - 8:35 pm

BOS

STN

19h 45m2 stops

9:20 pm - 5:50 pm

STN

BOS

25h 30m2 stops

$503Multiple Airlines

Mon, Feb 16 - Wed, Feb 18

7:12 pm - 6:55 am

BOS

LHR

6h 43mnonstop

9:20 am - 12:16 pm

LHR

BOS

7h 56mnonstop

$504JetBlue

Tue, Jan 13 - Wed, Jan 28

10:10 pm - 1:00 pm

BOS

LHR

9h 50m1 stop

1:45 pm - 8:20 pm

LHR

BOS

11h 35m1 stop

$506SWISS

Wed, May 6 - Wed, May 20

2:16 pm - 6:55 am

BOS

LHR

11h 39m1 stop

10:50 am - 5:40 pm

LHR

BOS

11h 50m1 stop

$507Lufthansa

Useful Info

Low season	January
High season	April
Cheapest flight	$194

Best time to beat the crowds with an average 10% drop in price.

Most popular time to fly with an average 1% increase in price.

Flight from Boston to London Heathrow Airport

How does KAYAK find such low prices on flights from Maine to London?
KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Maine to London.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Maine to London?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London from Maine is likely to change within 7 days, so travelers know whether to wait or book now.
What is the Hacker Fare option on flights from Maine to London?
Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to London with an airline and back to Maine with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Maine to London?
Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to London from Maine up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Hounslow

Slough

Wembley

Hayes

Richmond

Luton

Ilford

Crawley

Watford

Guildford

Eastbourne

Kingston upon Thames

Colchester

St. Albans

Ipswich

Bedford

Twickenham

Barnet

Hastings

Harrow

Everything you need to know for your flight to London

Cabin class

Complete your trip

Direct Flights

Flights to other cities

Origins

Other airports

Cabin class types available on flights to Maine

First Class flights to London

Business Class flights to London

Prem Econ Class flights to London

Economy Class flights to London

$194 Find Cheap Flights from Maine to London

KAYAK searches hundreds of travel sites at once for deals on flights to London

Everything you should know

Cheap Flights from Maine to London

Recent round-trip flight deals from Maine to London

Recent one-way flight deals from Maine to London

Recent last minute flight deals from Maine to London

Recent direct flight deals from Maine to London

Good to know

FAQs for booking flights from Maine to London

How does KAYAK find such low prices on flights from Maine to London?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Maine to London.

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Maine to London?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London from Maine is likely to change within 7 days, so travelers know whether to wait or book now.

What is the Hacker Fare option on flights from Maine to London?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to London with an airline and back to Maine with another airline.

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Maine to London?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to London from Maine up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Traveling to a place near London?

Everything you need to know for your flight to London

Cabin class types available on flights to Maine

Complete your trip to London with a hotel stay or car rental

Find direct flights for London

Flights to other popular destinations

Flights from domestic origins to London

Choose which airport to fly into in London