LHR

$220 Find Cheap Flights from Maine to London Heathrow Airport

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to London departing on 3/2. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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

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

Save 23% 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.

Everything you should know

Cheapest round-trip
$491
Overall average: $613
Multiple Airlines
Sun 3/1Sun 3/8
BOS - LHR • 2 stops
Cheapest non-stop
$512
Typical prices: $565-$725
British Airways
Sun 3/15Tue 3/31
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
Useful Info
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.

Recent round-trip flight deals from Maine to London

Sun, Mar 1 - Sun, Mar 8
Multiple Airlines Logo
5:30 am - 9:20 am
BOS
-
LHR
22h 50m
2 stops
Multiple Airlines Logo
6:00 am - 2:05 pm
LHR
-
BOS
13h 05m
1 stop
$491Multiple Airlines
Wed, Feb 11 - Sat, Feb 14
Multiple Airlines Logo
6:40 pm - 8:35 pm
BOS
-
LHR
20h 55m
1 stop
Multiple Airlines Logo
7:25 pm - 2:05 pm
LHR
-
BOS
23h 40m
1 stop
$492Multiple Airlines
Thu, Feb 26 - Mon, Mar 2
Aer Lingus Logo
7:25 pm - 9:15 am
BOS
-
LHR
8h 50m
1 stop
Aer Lingus Logo
10:00 am - 4:50 pm
LHR
-
BOS
11h 50m
1 stop
$493Aer Lingus
Wed, Feb 11 - Tue, Feb 17
Multiple Airlines Logo
10:15 am - 7:10 am
BOS
-
LHR
15h 55m
1 stop
Multiple Airlines Logo
6:00 am - 2:05 pm
LHR
-
BOS
13h 05m
1 stop
$494Multiple Airlines
Sat, Feb 21 - Sat, Feb 28
Multiple Airlines Logo
6:40 pm - 8:35 pm
BOS
-
LHR
20h 55m
1 stop
Multiple Airlines Logo
7:25 pm - 2:05 pm
LHR
-
BOS
23h 40m
1 stop
$495Multiple Airlines
Wed, Feb 18 - Mon, Feb 23
Multiple Airlines Logo
3:35 pm - 7:10 am
BOS
-
LHR
10h 35m
1 stop
Multiple Airlines Logo
7:25 pm - 2:05 pm
LHR
-
BOS
23h 40m
1 stop
$496Multiple Airlines
Mon, Feb 16 - Thu, Feb 19
Lufthansa Logo
8:40 pm - 1:00 pm
BOS
-
LHR
11h 20m
1 stop
Lufthansa Logo
11:10 am - 6:35 pm
LHR
-
BOS
12h 25m
1 stop
$498Lufthansa
Thu, Feb 26 - Sun, Mar 1
Iberia Logo
7:15 pm - 7:00 am
BOS
-
LHR
6h 45mnonstop
Iberia Logo
8:25 am - 7:50 pm
LHR
-
BOS
16h 25m
1 stop
$500Iberia
Fri, Feb 27 - Tue, Mar 3
American Airlines Logo
12:29 pm - 6:35 am
PWM
-
LHR
13h 06m
1 stop
American Airlines Logo
7:50 am - 6:11 pm
LHR
-
PWM
15h 21m
2 stops
$628American Airlines
Thu, Apr 16 - Sat, Apr 25
American Airlines Logo
5:46 pm - 12:15 pm
BGR
-
LHR
13h 29m
1 stop
American Airlines Logo
1:10 pm - 10:28 pm
LHR
-
BGR
14h 18m
1 stop
$778American Airlines
Useful Info

Good to know

Low seasonJanuary
Cheapest flight$221
Best time to beat the crowds with an average 10% drop in price.
Most popular time to fly with an average 18% increase in price.
Flight from Boston to London Heathrow Airport

FAQs for booking Maine to London Heathrow Airport flights

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

    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 Heathrow Airport.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London Heathrow Airport 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 Heathrow Airport?

    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 Heathrow Airport 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 Heathrow Airport?

    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 Heathrow Airport 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?

Book flights to London if you plan to visit one of these locations
Hounslow
Slough
Hayes
Wembley
Richmond
Luton
Salisbury
Ilford
Crawley
Watford
Guildford
Eastbourne
Kingston upon Thames
Swindon
Colchester
St. Albans
Northampton
Twickenham
Ipswich
Bedford

Everything you need to know for your flight to London

Information on your arrival and departure airports

London Heathrow Airport (LHR)