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Flights to Portland

£392 Cheap flights to Portland, Maine

1 adult
1 adult, Economy, 0 bags

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Find the cheapest flights from the United Kingdom to Portland, Maine

Cheap return flights

Enter your travel dates to find the best prices.
United Airlines Logo
15:20 - 23:28LHR  London Heathrow-PWM Portland
13h 08m1 stop Newark
United Airlines Logo
15:41 - 09:10PWM  Portland-LHR London Heathrow
12h 29m1 stop Newark
£556United Airlines
Mon, 28 Sep - Tue, 24 Nov
Scandinavian Airlines Logo
07:05 - 00:10LHR  London Heathrow-PWM Portland
22h 05m2 stops Oslo Gardermoen New York John F Kennedy Intl
Scandinavian Airlines Logo
06:04 - 17:40PWM  Portland-LHR London Heathrow
30h 36m2 stops New York John F Kennedy Intl Kastrup Copenhagen
£568Scandinavian Airlines
Thu, 15 Oct - Thu, 22 Oct
United Airlines Logo
16:00 - 23:28LHR  London Heathrow-PWM Portland
12h 28m1 stop Newark
United Airlines Logo
05:50 - 20:35PWM  Portland-LHR London Heathrow
9h 45m1 stop Newark
£578United Airlines
Thu, 1 Oct - Tue, 24 Nov
Scandinavian Airlines Logo
07:05 - 00:10LHR  London Heathrow-PWM Portland
22h 05m2 stops Oslo Gardermoen New York John F Kennedy Intl
Scandinavian Airlines Logo
06:04 - 16:00PWM  Portland-LHR London Heathrow
28h 56m3 stops New York John F Kennedy Intl Boston Logan Intl Kastrup Copenhagen
£580Scandinavian Airlines
Tue, 13 Oct - Tue, 20 Oct
Scandinavian Airlines Logo
06:40 - 00:10LHR  London Heathrow-PWM Portland
22h 30m2 stops Kastrup Copenhagen New York John F Kennedy Intl
Scandinavian Airlines Logo
14:33 - 22:40PWM  Portland-LHR London Heathrow
27h 07m2 stops New York John F Kennedy Intl Kastrup Copenhagen
£591Scandinavian Airlines
Sat, 17 Oct - Sat, 24 Oct
Scandinavian Airlines Logo
06:40 - 00:10LHR  London Heathrow-PWM Portland
22h 30m3 stops Stockholm Arlanda Kastrup Copenhagen New York John F Kennedy Intl
Scandinavian Airlines Logo
14:33 - 18:40PWM  Portland-LHR London Heathrow
23h 07m2 stops New York John F Kennedy Intl Kastrup Copenhagen
£596Scandinavian Airlines
Sat, 17 Oct - Sat, 24 Oct
United Airlines Logo
07:45 - 13:51LHR  London Heathrow-PWM Portland
11h 06m1 stop Newark
United Airlines Logo
15:41 - 10:25PWM  Portland-LHR London Heathrow
13h 44m1 stop Newark
£600United Airlines
Thu, 1 Oct - Sat, 21 Nov
Scandinavian Airlines Logo
19:30 - 00:21LHR  London Heathrow-PWM Portland
33h 51m2 stops Kastrup Copenhagen New York John F Kennedy Intl
Scandinavian Airlines Logo
06:00 - 09:20PWM  Portland-LHR London Heathrow
22h 20m2 stops New York John F Kennedy Intl Kastrup Copenhagen
£601Scandinavian Airlines
Thu, 3 Dec - Sun, 6 Dec
Scandinavian Airlines Logo
19:30 - 00:21LHR  London Heathrow-PWM Portland
33h 51m2 stops Kastrup Copenhagen New York John F Kennedy Intl
Scandinavian Airlines Logo
06:00 - 09:20PWM  Portland-LHR London Heathrow
22h 20m2 stops New York John F Kennedy Intl Kastrup Copenhagen
£601Scandinavian Airlines
Thu, 3 Dec - Sun, 6 Dec
Scandinavian Airlines Logo
19:30 - 00:21LHR  London Heathrow-PWM Portland
33h 51m2 stops Kastrup Copenhagen New York John F Kennedy Intl
Scandinavian Airlines Logo
06:00 - 09:20PWM  Portland-LHR London Heathrow
22h 20m2 stops New York John F Kennedy Intl Kastrup Copenhagen
£602Scandinavian Airlines
Thu, 3 Dec - Sun, 6 Dec

momondo Fare Finder

 
Use the filters below to find and compare flights to Portland, Maine that are best for you.

Fly from

Route

Depart

Return

Price

Cheapest return flight

LondonPortland

LHR London Heathrow - PWM Portland

LHRPWM

London Heathrow

Mon 28/9

15:20-23:28

1 stop13h 08m

Portland

Tue 24/11

15:41-09:10

1 stop12h 29m

£556

LondonPortland

LHR London Heathrow - PWM Portland

LHRPWM

London Heathrow

Thu 15/10

07:05-00:10

2 stops22h 05m

Portland

Thu 22/10

06:04-17:40

2 stops30h 36m

£568
Fastest return journey

LondonPortland

LHR London Heathrow - PWM Portland

LHRPWM

London Heathrow

Thu 1/10

16:00-23:28

1 stop12h 28m

Portland

Tue 24/11

05:50-20:35

1 stop9h 45m

£578

LondonPortland

LHR London Heathrow - PWM Portland

LHRPWM

London Heathrow

Tue 13/10

07:05-00:10

2 stops22h 05m

Portland

Tue 20/10

06:04-16:00

3 stops28h 56m

£580

LondonPortland

LHR London Heathrow - PWM Portland

LHRPWM

London Heathrow

Sat 17/10

06:40-00:10

2 stops22h 30m

Portland

Sat 24/10

14:33-22:40

2 stops27h 07m

£591

LondonPortland

LHR London Heathrow - PWM Portland

LHRPWM

London Heathrow

Sat 17/10

06:40-00:10

3 stops22h 30m

Portland

Sat 24/10

14:33-18:40

2 stops23h 07m

£596

LondonPortland

LHR London Heathrow - PWM Portland

LHRPWM

London Heathrow

Thu 1/10

07:45-13:51

1 stop11h 06m

Portland

Sat 21/11

15:41-10:25

1 stop13h 44m

£600

LondonPortland

LHR London Heathrow - PWM Portland

LHRPWM

London Heathrow

Thu 3/12

19:30-00:21

2 stops33h 51m

Portland

Sun 6/12

06:00-09:20

2 stops22h 20m

£601

LondonPortland

LHR London Heathrow - PWM Portland

LHRPWM

London Heathrow

Thu 3/12

19:30-00:21

2 stops33h 51m

Portland

Sun 6/12

06:00-09:20

2 stops22h 20m

£601

LondonPortland

LHR London Heathrow - PWM Portland

LHRPWM

London Heathrow

Thu 3/12

19:30-00:21

2 stops33h 51m

Portland

Sun 6/12

06:00-09:20

2 stops22h 20m

£602

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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Portland, Maine flights insights and trends

Explore insights for your Portland, Maine flight to craft the best travel plan

What is the cheapest month to fly to Portland, Maine?

The cheapest month to fly to Portland, Maine from United Kingdom is in December. Flight prices, which tend to average around £468, are often lower during this time because this is during the off-season. The month of February is another great option to travel to Portland, Maine, with average flight prices from United Kingdom averaging around £489.

Cheapest flights to Portland

Find the cheapest flights to Portland from your nearest city or airport
Find flights from London Heathrow Airport to Portland, Maine
CHEAPEST MONTH TO FLY TO PORTLAND, MAINE FROM LONDON HEATHROW AIRPORTNovember31% cheaperFlying from London Heathrow Airport to Portland, Maine costs on average just £471 in November
MOST EXPENSIVE MONTH TO FLY TO PORTLAND, MAINE FROM LONDON HEATHROW AIRPORTSeptember128% more expensiveIt costs about £1,555 for flights to Portland, Maine from London Heathrow Airport in September
MOST POPULAR MONTH TO FLY TO PORTLAND, MAINE FROM LONDON HEATHROW AIRPORTMarch100% more users visitedMore momondo users searched in flights to Portland, Maine from London Heathrow Airport in March than any other month

Cheap Portland, Maine flight deals and tips

Summary info about Portland, Maine flight prices, duration and airlines

Best One-Way Price

£392

Best Round-Trip Price

£556

Fastest flight time

14h 22m
The best one-way flight price to Portland from United Kingdom in the last 5 days is £392 (London Heathrow to Portland).
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The best return flight price to Portland from United Kingdom in the last 5 days is £556 (London Heathrow to Portland).
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The fastest flight to Portland from United Kingdom takes 14h 22m (Edinburgh Turnhouse to Portland).
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Frequently asked questions about flying to Portland, Maine

Is there an alternative airport near Portland, Maine?

Those flying to Portland, Maine could potentially find better pricing at Portland Airport (3 mi from Portland, Maine city centre), Portsmouth Pease Intl Airport (49 mi from Portland, Maine city centre), Augusta Airport (51 mi from Portland, Maine city centre), Rockland Knox County Regional Airport (64 mi from Portland, Maine city centre) or Manchester Airport (78 mi from Portland, Maine city centre) depending on the month and departure airport.

Is there a cheaper alternative to flying into Portland, Maine?

The cheapest airport near Portland, Maine is typically Rockland Knox County Regional Airport, with an average price of £103/person. These prices vary based on where travellers are coming from. It is suggested that travellers looking to save money try momondo’s Airport-to-Airport Pricing Tool.

What is the absolute cheapest flight to Portland, Maine?

In the past two weeks, users have booked deals to Portland, Maine for £154/person, which is 22% cheaper than the average flight to Portland, Maine. To find the cheapest price to Portland, Maine from your area, use momondo’s Airport-to-Airport Pricing Tool.

When did momondo last update prices for flights to Portland Airport?

Prices for flights to Portland Airport refresh daily.

How many operators does momondo search for flights to Portland Airport?

The number of operators available for flights to Portland Airport is 1 as of September 2026.

How old do you have to be to fly to Portland Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel to Portland Airport.

What documentation or ID do you need to fly to Portland Airport?

The travel and health documents required for your trip to Portland Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Portland Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Travelling to a place near Portland, Maine?

Book flights to Portland, Maine if you plan to visit one of these locations
North Conway
Bath

Why use momondo?

Why should I use momondo to find a flight deal to Portland?

Finding the right flight to Portland is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. These options can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Portland quick and easy, saving you time and money.

Can I find flights to Portland with flexible booking policies on momondo?

All flight searches to Portland on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights to Portland?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight to Portland.

I’m not ready to book a flight to Portland right now. Can momondo alert me if prices change?

Price alerts on flights to Portland are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your Portland trip

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Find better results for your trip to Portland, Maine

Popular Flights to Portland, Maine

London to Portland Flightsfrom £769
Manchester to Portland Flightsfrom £1,075
Edinburgh Turnhouse to Portland Flightsfrom £900
Newcastle upon Tyne to Portland Flightsfrom £1,203