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. 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 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. Visit our flight page for the latest deals!>/a>

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. 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 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. Visit our flight page for the latest deals!>/a>

$268 CHEAP FLIGHTS from Maine to London Heathrow (LHR)

LHR

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

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Cheap Flights from Maine to London

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, Oct 7 - Wed, Oct 21

11:00 pm - 9:10 am

BOS

LHR

29h 10m

1 stop

8:50 pm - 9:15 pm

LHR

BOS

29h 25m

1 stop

$599LEVEL

Wed, Sep 16 - Sun, Sep 20

11:00 pm - 9:10 am

BOS

LHR

29h 10m

1 stop

9:55 am - 10:05 pm

LHR

BOS

17h 10m

1 stop

$609LEVEL

Thu, Sep 10 - Sun, Sep 20

11:00 pm - 8:05 pm

BOS

LHR

16h 05m

1 stop

9:55 am - 10:05 pm

LHR

BOS

17h 10m

1 stop

$614LEVEL

Sun, Aug 23 - Tue, Aug 25

6:25 pm - 9:00 pm

BOS

LHR

21h 35m

1 stop

1:50 pm - 7:55 pm

LHR

BOS

11h 05m

1 stop

$619United Airlines

Sun, May 10 - Sat, May 16

6:00 am - 6:25 am

PWM

LHR

19h 25m

1 stop

8:40 am - 12:43 am

LHR

PWM

21h 03m

2 stops

$729Delta

Tue, Oct 20 - Mon, Nov 2

3:00 pm - 8:50 am

BGR

LHR

12h 50m

1 stop

7:20 pm - 2:21 pm

LHR

BGR

24h 01m

2 stops

$729Multiple Airlines

Wed, May 13 - Wed, May 20

12:50 pm - 1:05 pm

PWM

LHR

19h 15m

2 stops

6:30 am - 12:43 am

LHR

PWM

23h 13m

2 stops

$733Delta

Sun, May 10 - Sat, May 16

2:38 pm - 10:20 am

PWM

LHR

14h 42m

1 stop

11:15 am - 11:09 pm

LHR

PWM

16h 54m

1 stop

$735KLM

Sun, May 10 - Sat, May 16

2:38 pm - 8:50 am

PWM

LHR

13h 12m

1 stop

3:50 pm - 12:43 am

LHR

PWM

13h 53m

1 stop

$736KLM

Thu, Oct 1 - Sun, Oct 18

3:00 pm - 8:50 am

BGR

LHR

12h 50m

1 stop

5:45 pm - 2:21 pm

LHR

BGR

25h 36m

1 stop

$741Multiple Airlines

Useful Info

Low season	January
High season	July
Cheapest flight	$268

Best time to beat the crowds with an average 14% drop in price.

Most popular time to fly with an average 17% increase in price.

Flight from Boston to London Heathrow Airport

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.

Hounslow

Slough

Wembley

Hayes

Richmond

Luton

Salisbury

Crawley

Watford

Ilford

Eastbourne

Guildford

Bedford

Colchester

Ipswich

Northampton

Kingston upon Thames

Swindon

St. Albans

Twickenham

Everything you need to know for your flight to London

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London Heathrow Airport (LHR)

LHR

$268 Find Cheap Flights from Maine to London Heathrow Airport

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

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 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?

Everything you need to know for your flight to London

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Cabin class types available on flights to London

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

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