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Flights to Portland

£328 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 4/9. 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 - 00:25
LHR
-
PWM
17h 30m
1 stop
JetBlue Logo
06:00 - 20:45
PWM
-
LHR
9h 45m
1 stop
£514JetBlue
Thu, 3 Sep - Wed, 9 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
£517JetBlue
Wed, 16 Sep - Mon, 5 Oct
JetBlue Logo
08:15 - 00:25
LHR
-
PWM
21h 10m
1 stop
JetBlue Logo
06:00 - 09:30
PWM
-
LHR
22h 30m
1 stop
£517JetBlue
Fri, 4 Sep - Fri, 11 Sep
Multiple Airlines Logo
12:10 - 13:45
EDI
-
PWM
30h 35m
1 stop
Multiple Airlines Logo
12:55 - 16:30
PWM
-
EDI
22h 35m
2 stops
£721Multiple Airlines
Tue, 1 Sep - Tue, 8 Sep
Multiple Airlines Logo
10:55 - 23:52
MAN
-
PWM
17h 57m
2 stops
Multiple Airlines Logo
06:00 - 17:15
PWM
-
MAN
30h 15m
2 stops
£752Multiple Airlines
Mon, 14 Sep - Mon, 21 Sep
KLM Logo
05:45 - 16:01
EDI
-
PWM
15h 16m
2 stops
KLM Logo
06:02 - 12:20
PWM
-
EDI
25h 18m
2 stops
£781KLM
Tue, 1 Sep - Tue, 8 Sep
United Airlines Logo
10:35 - 23:59
MAN
-
PWM
18h 24m
2 stops
United Airlines Logo
15:43 - 10:25
PWM
-
MAN
13h 42m
2 stops
£790United Airlines
Tue, 1 Sep - Tue, 8 Sep
United Airlines Logo
09:40 - 20:00
EDI
-
PWM
15h 20m
1 stop
United Airlines Logo
15:31 - 10:35
PWM
-
EDI
14h 04m
2 stops
£798United Airlines
Fri, 2 Oct - Tue, 6 Oct
Delta Logo
14:55 - 23:56
MAN
-
PWM
14h 01m
1 stop
Delta Logo
06:02 - 10:00
PWM
-
MAN
22h 58m
2 stops
£846Delta
Mon, 14 Sep - Mon, 21 Sep
Delta Logo
14:55 - 23:56
MAN
-
PWM
14h 01m
1 stop
Delta Logo
16:20 - 08:15
PWM
-
MAN
10h 55m
1 stop
£849Delta
Mon, 14 Sep - Mon, 21 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 19 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

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 3/9

11:55-00:25

1 stop17h 30m

Portland

Wed 9/9

06:00-20:45

1 stop9h 45m

£514

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Wed 16/9

11:55-23:52

1 stop16h 57m

Portland

Mon 5/10

06:00-20:45

1 stop9h 45m

£517

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Fri 4/9

08:15-00:25

1 stop21h 10m

Portland

Fri 11/9

06:00-09:30

1 stop22h 30m

£517

EdinburghPortland

EDI - PWM

EDIPWM

Edinburgh Turnhouse

Tue 1/9

12:10-13:45

1 stop30h 35m

Portland

Tue 8/9

12:55-16:30

2 stops22h 35m

£721

ManchesterPortland

MAN - PWM

MANPWM

Manchester

Mon 14/9

10:55-23:52

2 stops17h 57m

Portland

Mon 21/9

06:00-17:15

2 stops30h 15m

£752

EdinburghPortland

EDI - PWM

EDIPWM

Edinburgh Turnhouse

Tue 1/9

05:45-16:01

2 stops15h 16m

Portland

Tue 8/9

06:02-12:20

2 stops25h 18m

£781

ManchesterPortland

MAN - PWM

MANPWM

Manchester

Tue 1/9

10:35-23:59

2 stops18h 24m

Portland

Tue 8/9

15:43-10:25

2 stops13h 42m

£790

EdinburghPortland

EDI - PWM

EDIPWM

Edinburgh Turnhouse

Fri 2/10

09:40-20:00

1 stop15h 20m

Portland

Tue 6/10

15:31-10:35

2 stops14h 04m

£798

ManchesterPortland

MAN - PWM

MANPWM

Manchester

Mon 14/9

14:55-23:56

1 stop14h 01m

Portland

Mon 21/9

06:02-10:00

2 stops22h 58m

£846
Fastest return journey

ManchesterPortland

MAN - PWM

MANPWM

Manchester

Mon 14/9

14:55-23:56

1 stop14h 01m

Portland

Mon 21/9

16:20-08:15

1 stop10h 55m

£849

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 £492, 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 £569.

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 £531 in May
MOST EXPENSIVE MONTH TO FLY TO PORTLAND, MAINE FROM LONDON HEATHROW AIRPORTAugust58% more expensiveIt costs about £971 for flights to Portland, Maine from London Heathrow Airport in August
MOST POPULAR MONTH TO FLY TO PORTLAND, MAINE FROM LONDON HEATHROW AIRPORTSeptember300% 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

£328

Best Round-Trip Price

£514

Fastest flight time

30h 50m
The best one-way flight price to Portland from United Kingdom in the last 5 days is £328 (London Heathrow to Portland).
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The best return flight price to Portland from United Kingdom in the last 5 days is £514 (London Heathrow to Portland).
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The fastest flight to Portland from United Kingdom takes 30h 50m (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 £81/person, which is 57% 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 3 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 £692
Manchester to Portland Flightsfrom £1,092
Edinburgh Turnhouse to Portland Flightsfrom £1,079
Newcastle upon Tyne to Portland Flightsfrom £1,446