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>

$187 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

Save 24% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

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

Cheapest round-trip

$509

Overall average: $684

Iberia

Fri 12/5Fri 12/12

BOS - LHR • Non-stop

Cheapest non-stop

$509

Typical prices: $550-$865

Virgin Atlantic

Sun 11/30Fri 12/5

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

Fri, Dec 5 - Fri, Dec 12

7:15 pm - 7:00 amBOS-LHR

6h 45mnonstop

1:30 pm - 4:00 pmLHR-BOS

7h 30mnonstop

$509Iberia

Find Deal

Sun, Apr 26 - Sun, May 17

11:30 pm - 2:40 pmBOS-LGW

10h 10m1 stop

1:00 pm - 10:10 pmLGW-BOS

14h 10m1 stop

$509Icelandair

Find Deal

Fri, Feb 13 - Mon, Feb 16

10:15 am - 7:10 amBOS-LHR

15h 55m1 stop

6:50 am - 2:52 pmLHR-BOS

13h 02m2 stops

$510Air Canada

Find Deal

Wed, Jan 7 - Tue, Jan 13

7:50 pm - 12:55 pmBOS-LTN

12h 05m1 stop

7:00 am - 5:50 pmLTN-BOS

15h 50m1 stop

$510Multiple Airlines

Find Deal

Mon, Apr 20 - Mon, Apr 27

11:30 pm - 9:20 pmBOS-STN

16h 50m1 stop

8:30 am - 2:40 pmSTN-BOS

11h 10m1 stop

$510Multiple Airlines

Find Deal

Mon, Dec 29 - Sat, Jan 10

6:40 pm - 8:35 pmBOS-LHR

20h 55m1 stop

9:00 am - 5:50 pmLHR-BOS

13h 50m1 stop

$511Air Canada

Find Deal

Mon, Dec 8 - Mon, Dec 15

6:05 pm - 3:45 pmBOS-LGW

16h 40m1 stop

9:25 pm - 2:35 pmLGW-BOS

46h 10m2 stops

$511TAP AIR PORTUGAL

Find Deal

Sun, Dec 7 - Sun, Dec 14

7:10 pm - 6:50 amBOS-LHR

6h 40mnonstop

9:40 am - 12:30 pmLHR-BOS

7h 50mnonstop

$512Delta

Find Deal

Fri, Feb 20 - Wed, Feb 25

7:15 pm - 6:50 amBOS-LHR

6h 35mnonstop

6:20 am - 1:40 pmLHR-BOS

12h 20m1 stop

$513Delta

Find Deal

Wed, Dec 3 - Tue, Jan 13

6:05 pm - 10:00 amBOS-LGW

34h 55m2 stops

4:35 pm - 2:35 pmLGW-BOS

27h 00m1 stop

$517TAP AIR PORTUGAL

Find Deal

Useful Info

Low season	January
High season	April
Cheapest flight	$187

Best time to beat the crowds but there is an average 15% increase in price.

Most popular time to fly and prices are also 9% lower on average.

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

Guildford

Watford

Kingston upon Thames

Eastbourne

Colchester

Ipswich

St. Albans

Twickenham

Harrow

Bedford

Hastings

Worthing

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

$187 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