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>

$193 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

$509

Multiple Airlines

Wed 1/21Thu 1/29

BOS - LTN • 1 stop

Cheapest non-stop

$509

Typical prices: $558-$954

Virgin Atlantic

Fri 12/5Wed 12/10

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, Jan 21 - Thu, Jan 29

7:50 pm - 12:55 pmBOS-LTN

12h 05m1 stop

6:00 am - 5:50 pmLTN-BOS

16h 50m1 stop

$509Multiple Airlines

Find Deal

Sat, Mar 7 - Fri, Mar 13

3:40 pm - 7:10 amBOS-LHR

10h 30m1 stop

6:50 am - 7:12 pmLHR-BOS

16h 22m2 stops

$509Air Canada

Find Deal

Sun, Apr 26 - Sun, May 3

11:30 pm - 2:40 pmBOS-LGW

10h 10m1 stop

1:00 pm - 6:50 pmLGW-BOS

10h 50m1 stop

$509Icelandair

Find Deal

Wed, Jan 7 - Tue, Jan 20

7:50 pm - 10:55 amBOS-LGW

10h 05m1 stop

11:55 am - 5:50 pmLGW-BOS

10h 55m1 stop

$510Icelandair

Find Deal

Wed, Dec 31 - Mon, Jan 12

8:00 pm - 7:50 amBOS-LHR

6h 50mnonstop

9:40 am - 12:30 pmLHR-BOS

7h 50mnonstop

$510Delta

Find Deal

Sat, Dec 6 - Sun, Dec 14

8:00 pm - 7:50 amBOS-LHR

6h 50mnonstop

7:40 pm - 10:15 pmLHR-BOS

7h 35mnonstop

$511Delta

Find Deal

Mon, Jan 12 - Wed, Jan 21

7:10 pm - 9:30 amBOS-LCY

9h 20m1 stop

10:00 am - 6:55 pmLCY-BOS

13h 55m1 stop

$512Virgin Atlantic

Find Deal

Sun, Dec 7 - Tue, Dec 16

5:20 pm - 10:55 amBOS-LCY

12h 35m1 stop

8:25 am - 1:45 pmLCY-BOS

34h 20m1 stop

$515ITA Airways

Find Deal

Sun, Dec 7 - Tue, Dec 16

5:20 pm - 10:55 amBOS-LCY

12h 35m1 stop

8:25 am - 1:45 pmLCY-BOS

34h 20m1 stop

$517ITA Airways

Find Deal

Mon, Jan 12 - Tue, Jan 13

1:00 pm - 8:10 amBOS-LCY

14h 10m2 stops

8:05 pm - 1:30 pmLCY-BOS

22h 25m1 stop

$522Virgin Atlantic

Find Deal

Useful Info

Low season	October
High season	April
Cheapest flight	$193

Best time to beat the crowds with an average 24% drop 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

$199 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