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

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 9 - Thu, Nov 12

8:49 am - 7:10 amPWM Portland-LHR London Heathrow

41h 21m2 stops Newark Montreal Pierre Elliott Trudeau Intl

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

21h 31m2 stops Brussels Bruxelles-National Newark

$739United Airlines

Mon, Nov 16 - Wed, Nov 18

11:00 am - 10:25 amBGR Bangor-LHR London Heathrow

18h 25m1 stop Newark

9:00 am - 10:19 amLHR London Heathrow-BGR Bangor

30h 19m2 stops Zurich Newark

$740United 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

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 9 - Thu, Nov 12

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

33h 47m1 stop Chicago O'Hare Intl

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

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

$741United Airlines

Mon, Nov 16 - Wed, Nov 18

11:00 am - 10:50 amBGR Bangor-LHR London Heathrow

18h 50m2 stops Newark Washington, D.C. Dulles Intl

9:00 am - 10:19 amLHR London Heathrow-BGR Bangor

30h 19m2 stops Zurich Newark

$745United Airlines

Mon, Nov 2 - Fri, Nov 6

5:55 pm - 12:30 pmBGR Bangor-LHR London Heathrow

13h 35m2 stops Philadelphia Dublin

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

11h 55m1 stop Philadelphia

$891American 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

$893American Airlines

Recent last minute flight deals from Maine to London

Tue, Oct 6 - Tue, Oct 20

12:42 pm - 7:10 amPWM Portland-LHR London Heathrow

13h 28m1 stop Detroit Metropolitan Wayne County

11:45 am - 12:10 amLHR London Heathrow-PWM Portland

17h 25m2 stops Amsterdam Schiphol New York John F Kennedy Intl

$862KLM

Wed, Oct 7 - Wed, Oct 21

6:00 am - 8:35 amPWM Portland-LHR London Heathrow

21h 35m2 stops Newark Ottawa

1:50 pm - 11:28 pmLHR London Heathrow-PWM Portland

14h 38m2 stops Zurich Newark

$870United Airlines

Fri, Oct 9 - Wed, Oct 14

6:04 am - 6:20 amPWM Portland-LHR London Heathrow

19h 16m1 stop New York John F Kennedy Intl

6:30 am - 12:10 amLHR London Heathrow-PWM Portland

22h 40m2 stops Amsterdam Schiphol New York John F Kennedy Intl

$871Delta

Fri, Oct 9 - Tue, Oct 27

11:20 am - 6:20 amPWM Portland-LHR London Heathrow

14h 00m1 stop New York LaGuardia

8:40 am - 11:18 pmLHR London Heathrow-PWM Portland

18h 38m2 stops Amsterdam Schiphol New York John F Kennedy Intl

$872Delta

Sat, Oct 10 - Mon, Oct 26

6:00 am - 7:15 amPWM Portland-LHR London Heathrow

20h 15m1 stop Newark

7:30 am - 6:52 pmLHR London Heathrow-PWM Portland

15h 22m2 stops Frankfurt am Main Newark

$873United Airlines

Tue, Oct 6 - Tue, Oct 20

4:47 pm - 1:45 pmPWM Portland-LHR London Heathrow

15h 58m2 stops Detroit Metropolitan Wayne County Paris Charles de Gaulle

9:55 am - 12:10 amLHR London Heathrow-PWM Portland

19h 15m2 stops Amsterdam Schiphol New York John F Kennedy Intl

$876Delta

Fri, Oct 9 - Wed, Oct 14

4:47 pm - 12:05 pmPWM Portland-LHR London Heathrow

14h 18m2 stops Detroit Metropolitan Wayne County New York John F Kennedy Intl

6:30 am - 12:10 amLHR London Heathrow-PWM Portland

22h 40m2 stops Amsterdam Schiphol New York John F Kennedy Intl

$877Delta

Tue, Oct 6 - Tue, Oct 20

2:09 pm - 7:15 amPWM Portland-LHR London Heathrow

12h 06m1 stop Atlanta Hartsfield-Jackson

11:15 am - 11:35 pmLHR London Heathrow-PWM Portland

17h 20m1 stop Atlanta Hartsfield-Jackson

$879Virgin Atlantic

Fri, Oct 9 - Mon, Oct 19

11:55 am - 7:40 amPWM Portland-LHR London Heathrow

14h 45m2 stops Minneapolis St Paul Amsterdam Schiphol

9:55 am - 12:10 amLHR London Heathrow-PWM Portland

19h 15m2 stops Amsterdam Schiphol New York John F Kennedy Intl

$880Delta

Mon, Oct 5 - Tue, Oct 20

6:00 am - 6:45 amPWM Portland-LHR London Heathrow

19h 45m1 stop Chicago O'Hare Intl

7:30 am - 8:22 pmLHR London Heathrow-PWM Portland

17h 52m2 stops Frankfurt am Main Newark

$883United Airlines

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

Bedford

Kingston upon Thames

Crawley

Watford

Twickenham

Harrow

St. Albans

Ipswich

Folkestone

Colchester

Horley

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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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High season

Cheapest flight

FAQs for booking flights from Maine to London

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

Cabin class types available on flights to Maine

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