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Flights to Portland

£374 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 15/9. 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 - 23:52
LHR
-
PWM
16h 57m
1 stop
JetBlue Logo
06:00 - 20:45
PWM
-
LHR
9h 45m
1 stop
£568JetBlue
Thu, 10 Sep - Mon, 14 Sep
JetBlue Logo
11:55 - 23:52
LHR
-
PWM
16h 57m
1 stop
JetBlue Logo
06:00 - 20:45
PWM
-
LHR
9h 45m
1 stop
£569JetBlue
Thu, 10 Sep - Mon, 14 Sep
JetBlue Logo
11:55 - 23:52
LHR
-
PWM
16h 57m
1 stop
JetBlue Logo
06:00 - 20:45
PWM
-
LHR
9h 45m
1 stop
£569JetBlue
Thu, 10 Sep - Mon, 14 Sep
Scandinavian Airlines Logo
20:25 - 00:59
MAN
-
PWM
33h 34m
2 stops
Scandinavian Airlines Logo
06:00 - 19:45
PWM
-
MAN
32h 45m
2 stops
£581Scandinavian Airlines
Mon, 24 Aug - Sun, 6 Sep
JetBlue Logo
08:15 - 23:52
LHR
-
PWM
20h 37m
1 stop
JetBlue Logo
06:00 - 09:30
PWM
-
LHR
22h 30m
1 stop
£586JetBlue
Mon, 28 Sep - Mon, 5 Oct
Scandinavian Airlines Logo
09:35 - 00:59
MAN
-
PWM
20h 24m
2 stops
Scandinavian Airlines Logo
06:02 - 12:05
PWM
-
MAN
25h 03m
2 stops
£594Scandinavian Airlines
Tue, 25 Aug - Wed, 9 Sep
JetBlue Logo
11:55 - 23:52
LHR
-
PWM
16h 57m
1 stop
JetBlue Logo
06:00 - 09:30
PWM
-
LHR
22h 30m
1 stop
£621JetBlue
Tue, 6 Oct - Fri, 9 Oct
Icelandair Logo
13:05 - 23:52
LHR
-
PWM
15h 47m
2 stops
Icelandair Logo
06:00 - 20:20
PWM
-
LHR
33h 20m
2 stops
£651Icelandair
Tue, 6 Oct - Fri, 9 Oct
United Airlines Logo
12:10 - 23:28
LHR
-
PWM
16h 18m
2 stops
United Airlines Logo
14:32 - 09:20
PWM
-
LHR
13h 48m
2 stops
£673United Airlines
Mon, 28 Sep - Mon, 5 Oct
Virgin Atlantic Logo
13:00 - 23:13
MAN
-
PWM
15h 13m
1 stop
Virgin Atlantic Logo
06:00 - 06:40
PWM
-
MAN
43h 40m
2 stops
£833Virgin Atlantic
Mon, 24 Aug - Wed, 9 Sep

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 1 July 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
Fastest return journey

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 10/9

11:55-23:52

1 stop16h 57m

Portland

Mon 14/9

06:00-20:45

1 stop9h 45m

£568

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 10/9

11:55-23:52

1 stop16h 57m

Portland

Mon 14/9

06:00-20:45

1 stop9h 45m

£569

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 10/9

11:55-23:52

1 stop16h 57m

Portland

Mon 14/9

06:00-20:45

1 stop9h 45m

£569

ManchesterPortland

MAN - PWM

MANPWM

Manchester

Mon 24/8

20:25-00:59

2 stops33h 34m

Portland

Sun 6/9

06:00-19:45

2 stops32h 45m

£581

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Mon 28/9

08:15-23:52

1 stop20h 37m

Portland

Mon 5/10

06:00-09:30

1 stop22h 30m

£586

ManchesterPortland

MAN - PWM

MANPWM

Manchester

Tue 25/8

09:35-00:59

2 stops20h 24m

Portland

Wed 9/9

06:02-12:05

2 stops25h 03m

£594

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Tue 6/10

11:55-23:52

1 stop16h 57m

Portland

Fri 9/10

06:00-09:30

1 stop22h 30m

£621

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Tue 6/10

13:05-23:52

2 stops15h 47m

Portland

Fri 9/10

06:00-20:20

2 stops33h 20m

£651

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Mon 28/9

12:10-23:28

2 stops16h 18m

Portland

Mon 5/10

14:32-09:20

2 stops13h 48m

£673

ManchesterPortland

MAN - PWM

MANPWM

Manchester

Mon 24/8

13:00-23:13

1 stop15h 13m

Portland

Wed 9/9

06:00-06:40

2 stops43h 40m

£833

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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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 £499, 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 £577.

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 AIRPORTMay15% cheaperFlying from London Heathrow Airport to Portland, Maine costs on average just £538 in May
MOST EXPENSIVE MONTH TO FLY TO PORTLAND, MAINE FROM LONDON HEATHROW AIRPORTAugust69% more expensiveIt costs about £1,067 for flights to Portland, Maine from London Heathrow Airport in August
MOST POPULAR MONTH TO FLY TO PORTLAND, MAINE FROM LONDON HEATHROW AIRPORTSeptember700% more users visitedMore momondo users searched in flights to Portland, Maine from London Heathrow Airport in September 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

£374

Best Round-Trip Price

£568

Fastest flight time

20h 37m
The best one-way flight price to Portland from United Kingdom in the last 5 days is £374 (London Heathrow to Portland).
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The best round-trip flight price to Portland from United Kingdom in the last 5 days is £568 (London Heathrow to Portland).
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The fastest flight to Portland from United Kingdom takes 20h 37m (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 £105/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 £74/person, which is 59% 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 4 as of July 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 £738
Manchester to Portland Flightsfrom £770
Edinburgh Turnhouse to Portland Flightsfrom £888
Newcastle upon Tyne to Portland Flightsfrom £1,446