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Flights to Portland

£368 Cheap flights to Portland, Maine

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight to Portland, Maine departing on 31/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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.
JetBlue Logo
11:55 - 00:25
LHR
-
PWM
17h 30m
1 stop
JetBlue Logo
06:00 - 20:45
PWM
-
LHR
9h 45m
1 stop
£529JetBlue
Wed, 2 Sep - Wed, 9 Sep
JetBlue Logo
11:55 - 23:54
LHR
-
PWM
16h 59m
1 stop
JetBlue Logo
06:00 - 20:45
PWM
-
LHR
9h 45m
1 stop
£533JetBlue
Mon, 14 Sep - Mon, 21 Sep
JetBlue Logo
08:15 - 23:54
LHR
-
PWM
20h 39m
1 stop
JetBlue Logo
06:00 - 09:30
PWM
-
LHR
22h 30m
1 stop
£537JetBlue
Wed, 7 Oct - Sun, 11 Oct
JetBlue Logo
08:15 - 23:54
LHR
-
PWM
20h 39m
1 stop
JetBlue Logo
06:00 - 09:30
PWM
-
LHR
22h 30m
1 stop
£537JetBlue
Tue, 22 Sep - Tue, 29 Sep
JetBlue Logo
08:15 - 23:54
LHR
-
PWM
20h 39m
1 stop
JetBlue Logo
06:00 - 09:30
PWM
-
LHR
22h 30m
1 stop
£540JetBlue
Tue, 22 Sep - Tue, 29 Sep
JetBlue Logo
11:55 - 23:54
LHR
-
PWM
16h 59m
1 stop
JetBlue Logo
06:00 - 09:30
PWM
-
LHR
22h 30m
1 stop
£543JetBlue
Mon, 21 Sep - Mon, 28 Sep
JetBlue Logo
07:25 - 23:43
LHR
-
PWM
20h 18m
1 stop
JetBlue Logo
06:30 - 09:30
PWM
-
LHR
22h 00m
1 stop
£544JetBlue
Fri, 30 Oct - Sun, 8 Nov
JetBlue Logo
11:55 - 23:54
LHR
-
PWM
16h 59m
1 stop
JetBlue Logo
06:00 - 20:45
PWM
-
LHR
9h 45m
1 stop
£549JetBlue
Wed, 30 Sep - Sun, 4 Oct
United Airlines Logo
09:30 - 22:57
LHR
-
PWM
18h 27m
2 stops
United Airlines Logo
17:06 - 06:40
PWM
-
LHR
32h 34m
2 stops
£709United Airlines
Wed, 2 Dec - Sun, 6 Dec
United Airlines Logo
07:30 - 13:38
LHR
-
PWM
35h 08m
2 stops
United Airlines Logo
17:06 - 06:20
PWM
-
LHR
32h 14m
1 stop
£709United Airlines
Wed, 2 Dec - Sun, 6 Dec

momondo Fare Finder

 
Locate flights to Portland that fit your budget, with regularly updated fares and availability. In the last 7 days, momondo users made a total of 279,928 searches and data was last updated on 2 August 2026.
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 - PWM

LHRPWM

London Heathrow

Wed 2/9

11:55-00:25

1 stop17h 30m

Portland

Wed 9/9

06:00-20:45

1 stop9h 45m

£529
Fastest return journey

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Mon 14/9

11:55-23:54

1 stop16h 59m

Portland

Mon 21/9

06:00-20:45

1 stop9h 45m

£533

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Wed 7/10

08:15-23:54

1 stop20h 39m

Portland

Sun 11/10

06:00-09:30

1 stop22h 30m

£537

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Tue 22/9

08:15-23:54

1 stop20h 39m

Portland

Tue 29/9

06:00-09:30

1 stop22h 30m

£537

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Tue 22/9

08:15-23:54

1 stop20h 39m

Portland

Tue 29/9

06:00-09:30

1 stop22h 30m

£540

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Mon 21/9

11:55-23:54

1 stop16h 59m

Portland

Mon 28/9

06:00-09:30

1 stop22h 30m

£543

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Fri 30/10

07:25-23:43

1 stop20h 18m

Portland

Sun 8/11

06:30-09:30

1 stop22h 00m

£544

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Wed 30/9

11:55-23:54

1 stop16h 59m

Portland

Sun 4/10

06:00-20:45

1 stop9h 45m

£549

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Wed 2/12

09:30-22:57

2 stops18h 27m

Portland

Sun 6/12

17:06-06:40

2 stops32h 34m

£709

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Wed 2/12

07:30-13:38

2 stops35h 08m

Portland

Sun 6/12

17:06-06:20

1 stop32h 14m

£709

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
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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 February. Flight prices, which tend to average around £491, are often lower during this time because this is during the off-season. The month of November is another great option to travel to Portland, Maine, with average flight prices from United Kingdom averaging around £558.

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 AIRPORTMay14% cheaperFlying from London Heathrow Airport to Portland, Maine costs on average just £529 in May
MOST EXPENSIVE MONTH TO FLY TO PORTLAND, MAINE FROM LONDON HEATHROW AIRPORTAugust58% more expensiveIt costs about £968 for flights to Portland, Maine from London Heathrow Airport in August
MOST POPULAR MONTH TO FLY TO PORTLAND, MAINE FROM LONDON HEATHROW AIRPORTAugust600% more users visitedMore momondo users searched in flights to Portland, Maine from London Heathrow Airport in August 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

£368

Best Round-Trip Price

£481

Fastest flight time

25h 53m
The best one-way flight price to Portland from United Kingdom in the last 5 days is £368 (Manchester to Portland).
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The best return flight price to Portland from United Kingdom in the last 5 days is £481 (London Heathrow to Portland).
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The fastest flight to Portland from United Kingdom takes 25h 53m (London Heathrow 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 £104/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 £93/person, which is 50% 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 2 as of August 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
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

Popular routes according to searches in the past day on momondo
London to Portland Flightsfrom £724
Manchester to Portland Flightsfrom £1,077
Edinburgh Turnhouse to Portland Flightsfrom £772
Newcastle upon Tyne to Portland Flightsfrom £1,158