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.

$320 CHEAP FLIGHTS from Maine to London

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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

Recent round-trip flight deals from Maine to London

Mon, Nov 16 - Wed, Nov 18

3:41 pm - 4:20 pmPWM Portland-LHR London Heathrow

19h 39m2 stops Newark Zurich

9:00 am - 11:21 pmLHR London Heathrow-PWM Portland

43h 21m2 stops Halifax Intl Newark

$734United Airlines

Mon, Nov 16 - Wed, Nov 18

8:49 am - 11:15 amPWM Portland-LHR London Heathrow

21h 26m2 stops Newark Zurich

9:00 am - 11:21 pmLHR London Heathrow-PWM Portland

43h 21m2 stops Halifax Intl Newark

$734United Airlines

Mon, Nov 16 - Wed, Nov 18

2:05 pm - 10:50 amPWM Portland-LHR London Heathrow

15h 45m1 stop Washington, D.C. Dulles Intl

9:00 am - 11:21 pmLHR London Heathrow-PWM Portland

19h 21m2 stops Zurich Newark

$735United Airlines

Mon, Nov 16 - Wed, Nov 18

3:41 pm - 8:25 amPWM Portland-LHR London Heathrow

11h 44m1 stop Newark

6:50 am - 7:02 pmLHR London Heathrow-PWM Portland

17h 12m2 stops Brussels Bruxelles-National Washington, D.C. Dulles Intl

$736United Airlines

Mon, Nov 16 - Wed, Nov 18

2:05 pm - 9:10 amPWM Portland-LHR London Heathrow

14h 05m2 stops Washington, D.C. Dulles Intl Newark

6:50 am - 7:02 pmLHR London Heathrow-PWM Portland

17h 12m2 stops Brussels Bruxelles-National Washington, D.C. Dulles Intl

$740United Airlines

Sun, Nov 1 - Wed, Nov 4

5:08 pm - 7:55 amPWM Portland-LHR London Heathrow

33h 47m1 stop Chicago O'Hare Intl

6:50 am - 11:21 pmLHR London Heathrow-PWM Portland

21h 31m2 stops Brussels Bruxelles-National Newark

$741United Airlines

Mon, Nov 16 - Wed, Nov 18

11:00 am - 8:25 amBGR Bangor-LHR London Heathrow

16h 25m1 stop Newark

6:50 am - 10:19 amLHR London Heathrow-BGR Bangor

32h 29m2 stops Brussels Bruxelles-National Newark

$741United Airlines

Mon, Nov 16 - Wed, Nov 18

11:00 am - 8:05 amBGR Bangor-LHR London Heathrow

40h 05m2 stops Newark Zurich

6:00 pm - 10:19 amLHR London Heathrow-BGR Bangor

45h 19m2 stops Toronto Pearson Intl Newark

$742United Airlines

Wed, Oct 28 - Wed, Nov 4

2:40 pm - 9:40 amBGR Bangor-LHR London Heathrow

15h 00m1 stop Charlotte Douglas

10:35 am - 5:30 pmLHR London Heathrow-BGR Bangor

11h 55m1 stop Philadelphia

$892American Airlines

Tue, Nov 3 - Tue, Nov 10

10:43 am - 6:35 amBGR Bangor-LHR London Heathrow

14h 52m1 stop Philadelphia

10:35 am - 6:03 pmLHR London Heathrow-BGR Bangor

12h 28m1 stop Philadelphia

$893American Airlines

Recent last minute flight deals from Maine to London

Thu, Oct 15 - Wed, Oct 21

5:50 pm - 11:05 amBGR Bangor-LHR London Heathrow

12h 15m1 stop Chicago O'Hare Intl

9:15 am - 4:02 pmLHR London Heathrow-BGR Bangor

11h 47m1 stop Philadelphia

$894American Airlines

Sat, Oct 10 - Sat, Oct 17

2:33 pm - 8:50 amPWM Portland-LHR London Heathrow

13h 17m1 stop New York John F Kennedy Intl

3:50 pm - 12:10 amLHR London Heathrow-PWM Portland

13h 20m1 stop New York John F Kennedy Intl

$901KLM

Sat, Oct 10 - Sat, Oct 17

2:09 pm - 1:05 pmPWM Portland-LHR London Heathrow

17h 56m2 stops Atlanta Hartsfield-Jackson Minneapolis St Paul

3:50 pm - 12:10 amLHR London Heathrow-PWM Portland

13h 20m1 stop New York John F Kennedy Intl

$905Delta

Thu, Oct 15 - Wed, Oct 21

4:10 pm - 1:45 pmBGR Bangor-LHR London Heathrow

16h 35m2 stops New York John F Kennedy Intl Paris Charles de Gaulle

8:20 am - 3:30 pmLHR London Heathrow-BGR Bangor

12h 10m1 stop New York John F Kennedy Intl

$905Air France

Sat, Oct 10 - Sat, Oct 17

2:09 pm - 1:05 pmPWM Portland-LHR London Heathrow

17h 56m2 stops Atlanta Hartsfield-Jackson Minneapolis St Paul

6:35 pm - 11:57 amLHR London Heathrow-PWM Portland

22h 22m2 stops New York John F Kennedy Intl Detroit Metropolitan Wayne County

$1,075Delta

Thu, Oct 15 - Wed, Oct 21

12:08 pm - 6:55 amBGR Bangor-LHR London Heathrow

13h 47m2 stops Newark Washington, D.C. Dulles Intl

8:40 am - 9:39 pmLHR London Heathrow-BGR Bangor

17h 59m2 stops Zurich Chicago O'Hare Intl

$1,098United Airlines

Sat, Oct 10 - Sat, Oct 17

10:43 am - 6:30 amPWM Portland-LHR London Heathrow

14h 47m2 stops Newark Montreal Pierre Elliott Trudeau Intl

6:00 am - 8:22 pmLHR London Heathrow-PWM Portland

19h 22m3 stops Zurich Toronto Pearson Intl Newark

$1,748Multiple Airlines

Sat, Oct 10 - Sat, Oct 17

9:10 am - 6:30 amPWM Portland-LHR London Heathrow

16h 20m3 stops Newark Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl

6:00 am - 8:22 pmLHR London Heathrow-PWM Portland

19h 22m3 stops Zurich Toronto Pearson Intl Newark

$2,249Air Canada

Useful Info

Low season	January
High season	April
Cheapest flight	$320

Best time to beat the crowds with an average 35% drop in price.

Most popular time to fly and prices are also 6% lower on average.

Flight from Portland 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

Hayes

Slough

Richmond

Wembley

Luton

Eastbourne

Ilford

Guildford

Kingston upon Thames

Bedford

Crawley

Watford

Harrow

Twickenham

Ipswich

St. Albans

Folkestone

Colchester

Woodbridge

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$320 Find Cheap Flights from Maine to London - Compare and Save

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

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