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Flights to Portland

£454 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 9/3. 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
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
08:15 - 23:59
LHR
-
PWM
20h 44m
1 stop
JetBlue Logo
07:30 - 09:30
PWM
-
LHR
21h 00m
1 stop
£519JetBlue
Mon, 13 Apr - Mon, 20 Apr
JetBlue Logo
11:55 - 23:36
LHR
-
PWM
16h 41m
1 stop
JetBlue Logo
06:00 - 20:45
PWM
-
LHR
9h 45m
1 stop
£553JetBlue
Wed, 6 May - Sat, 9 May
JetBlue Logo
11:55 - 23:36
LHR
-
PWM
16h 41m
1 stop
JetBlue Logo
06:00 - 20:45
PWM
-
LHR
9h 45m
1 stop
£553JetBlue
Wed, 6 May - Sat, 9 May
United Airlines Logo
12:10 - 23:28
LHR
-
PWM
16h 18m
2 stops
United Airlines Logo
19:12 - 10:25
PWM
-
LHR
10h 13m
1 stop
£576United Airlines
Mon, 13 Apr - Mon, 20 Apr
Delta Logo
06:30 - 23:03
LHR
-
PWM
20h 33m
2 stops
Delta Logo
12:51 - 10:15
PWM
-
LHR
17h 24m
2 stops
£626Delta
Wed, 18 Mar - Mon, 23 Mar
Delta Logo
10:45 - 23:22
LHR
-
PWM
16h 37m
1 stop
Delta Logo
16:48 - 08:45
PWM
-
LHR
11h 57m
1 stop
£639Delta
Wed, 18 Mar - Mon, 23 Mar
United Airlines Logo
11:05 - 21:40
LHR
-
PWM
15h 35m
1 stop
United Airlines Logo
18:18 - 06:45
PWM
-
LHR
31h 27m
1 stop
£642United Airlines
Sun, 12 Apr - Sun, 19 Apr
Multiple Airlines Logo
08:55 - 23:55
MAN
-
PWM
19h 00m
2 stops
Multiple Airlines Logo
17:40 - 19:05
PWM
-
MAN
20h 25m
2 stops
£799Multiple Airlines
Wed, 25 Mar - Wed, 1 Apr
Multiple Airlines Logo
13:05 - 13:29
MAN
-
PWM
29h 24m
2 stops
Multiple Airlines Logo
20:15 - 06:30
PWM
-
MAN
29h 15m
2 stops
£836Multiple Airlines
Wed, 17 Jun - Fri, 26 Jun
American Airlines Logo
11:25 - 18:36
EDI
-
PWM
12h 11m
1 stop
American Airlines Logo
11:01 - 07:30
PWM
-
EDI
15h 29m
1 stop
£907American Airlines
Thu, 18 Jun - Sat, 4 Jul

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 28 February 2026.
Use the filters below to find and compare flights to Portland, Maine that are best for you.

Fly from

Route

Depart

Return

Price

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Mon 13/4

08:15-23:59

1 stop20h 44m

Portland

Mon 20/4

07:30-09:30

1 stop21h 00m

£519

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Wed 6/5

11:55-23:36

1 stop16h 41m

Portland

Sat 9/5

06:00-20:45

1 stop9h 45m

£553

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Wed 6/5

11:55-23:36

1 stop16h 41m

Portland

Sat 9/5

06:00-20:45

1 stop9h 45m

£553

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Mon 13/4

12:10-23:28

2 stops16h 18m

Portland

Mon 20/4

19:12-10:25

1 stop10h 13m

£576

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Wed 18/3

06:30-23:03

2 stops20h 33m

Portland

Mon 23/3

12:51-10:15

2 stops17h 24m

£626

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Wed 18/3

10:45-23:22

1 stop16h 37m

Portland

Mon 23/3

16:48-08:45

1 stop11h 57m

£639

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Sun 12/4

11:05-21:40

1 stop15h 35m

Portland

Sun 19/4

18:18-06:45

1 stop31h 27m

£642

ManchesterPortland

MAN - PWM

MANPWM

Manchester

Wed 25/3

08:55-23:55

2 stops19h 00m

Portland

Wed 1/4

17:40-19:05

2 stops20h 25m

£799

ManchesterPortland

MAN - PWM

MANPWM

Manchester

Wed 17/6

13:05-13:29

2 stops29h 24m

Portland

Fri 26/6

20:15-06:30

2 stops29h 15m

£836

EdinburghPortland

EDI - PWM

EDIPWM

Edinburgh Turnhouse

Thu 18/6

11:25-18:36

1 stop12h 11m

Portland

Sat 4/7

11:01-07:30

1 stop15h 29m

£907

Flights are sorted by cheapest return flights first.

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

See travel insights to Portland, Maine from

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 October. Flight prices, which tend to average around £515, 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 £542.

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 AIRPORTFebruary25% cheaperFlying from London Heathrow Airport to Portland, Maine costs on average just £503 in February
MOST EXPENSIVE MONTH TO FLY TO PORTLAND, MAINE FROM LONDON HEATHROW AIRPORTDecember72% more expensiveIt costs about £1,159 for flights to Portland, Maine from London Heathrow Airport in December
MOST POPULAR MONTH TO FLY TO PORTLAND, MAINE FROM LONDON HEATHROW AIRPORTJune625% more users visitedMore momondo users searched in flights to Portland, Maine from London Heathrow Airport in June 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

£454

Best Round-Trip Price

£519

Fastest flight time

14h 42m

Popular in

July
The best one-way flight price to Portland from United Kingdom in the last 72 hours is £454 (London Heathrow to Portland).
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The best round-trip flight price to Portland from United Kingdom in the last 72 hours is £519 (London Heathrow to Portland).
Search Deals
The fastest flight to Portland from United Kingdom takes 14h 42m (Edinburgh Turnhouse to Portland).
Search Deals
July has the highest demand for flights to Portland, with a 14% price increase on average.
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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 44% 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 7 as of February 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 £748
Manchester to Portland Flightsfrom £981
Edinburgh Turnhouse to Portland Flightsfrom £923
Newcastle upon Tyne to Portland Flightsfrom £945