Latest deals
Insights
When to book
FAQs
Price Alerts
Flights to Portland

£358 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 3/6. 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

Discover deals from 900+ travel sites with momondo.

Voted winner of Europe's Best Travel App 2023

Save money when you book flights with momondo

Big names, great deals

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

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 - 23:36
LHR
-
PWM
16h 41m
1 stop
JetBlue Logo
06:00 - 20:45
PWM
-
LHR
9h 45m
1 stop
£558JetBlue
Thu, 7 May - Thu, 14 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
£579JetBlue
Wed, 6 May - Sat, 9 May
United Airlines Logo
11:10 - 22:18
LHR
-
PWM
16h 08m
2 stops
United Airlines Logo
06:00 - 21:35
PWM
-
LHR
10h 35m
1 stop
£598United Airlines
Fri, 6 Mar - Wed, 6 May
United Airlines Logo
08:40 - 10:18
LHR
-
PWM
30h 38m
2 stops
United Airlines Logo
06:00 - 21:35
PWM
-
LHR
10h 35m
1 stop
£604United Airlines
Thu, 7 May - Thu, 14 May
Austrian Airlines Logo
09:10 - 18:25
LHR
-
PWM
14h 15m
1 stop
Austrian Airlines Logo
11:08 - 05:55
PWM
-
LHR
13h 47m
1 stop
£610Austrian Airlines
Fri, 6 Mar - Wed, 6 May
Austrian Airlines Logo
16:00 - 18:25
LHR
-
PWM
30h 25m
1 stop
Austrian Airlines Logo
11:08 - 09:20
PWM
-
LHR
17h 12m
1 stop
£611Austrian Airlines
Sat, 14 Mar - Thu, 14 May
Multiple Airlines Logo
09:10 - 18:25
LHR
-
PWM
13h 15m
1 stop
Multiple Airlines Logo
11:08 - 06:30
PWM
-
LHR
14h 22m
2 stops
£618Multiple Airlines
Sat, 14 Mar - Wed, 6 May
Delta Logo
05:50 - 23:59
MAN
-
PWM
22h 09m
2 stops
Delta Logo
06:25 - 08:15
PWM
-
MAN
20h 50m
1 stop
£762Delta
Mon, 23 Mar - Mon, 30 Mar
Multiple Airlines Logo
11:25 - 10:49
MAN
-
PWM
27h 24m
3 stops
Multiple Airlines Logo
06:00 - 17:10
PWM
-
MAN
30h 10m
2 stops
£956Multiple Airlines
Mon, 23 Mar - Mon, 30 Mar
Delta Logo
13:00 - 13:50
MAN
-
PWM
28h 50m
1 stop
Delta Logo
06:25 - 08:15
PWM
-
MAN
20h 50m
1 stop
£1,586Delta
Mon, 23 Mar - Mon, 30 Mar

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 9 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

Thu 7/5

11:55-23:36

1 stop16h 41m

Portland

Thu 14/5

06:00-20:45

1 stop9h 45m

£558

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

£579

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Fri 6/3

11:10-22:18

2 stops16h 08m

Portland

Wed 6/5

06:00-21:35

1 stop10h 35m

£598

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 7/5

08:40-10:18

2 stops30h 38m

Portland

Thu 14/5

06:00-21:35

1 stop10h 35m

£604

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Fri 6/3

09:10-18:25

1 stop14h 15m

Portland

Wed 6/5

11:08-05:55

1 stop13h 47m

£610

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Sat 14/3

16:00-18:25

1 stop30h 25m

Portland

Thu 14/5

11:08-09:20

1 stop17h 12m

£611

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Sat 14/3

09:10-18:25

1 stop13h 15m

Portland

Wed 6/5

11:08-06:30

2 stops14h 22m

£618

ManchesterPortland

MAN - PWM

MANPWM

Manchester

Mon 23/3

05:50-23:59

2 stops22h 09m

Portland

Mon 30/3

06:25-08:15

1 stop20h 50m

£762

ManchesterPortland

MAN - PWM

MANPWM

Manchester

Mon 23/3

11:25-10:49

3 stops27h 24m

Portland

Mon 30/3

06:00-17:10

2 stops30h 10m

£956

ManchesterPortland

MAN - PWM

MANPWM

Manchester

Mon 23/3

13:00-13:50

1 stop28h 50m

Portland

Mon 30/3

06:25-08:15

1 stop20h 50m

£1,586

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 £510, 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 £537.

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 £498 in February
MOST EXPENSIVE MONTH TO FLY TO PORTLAND, MAINE FROM LONDON HEATHROW AIRPORTDecember72% more expensiveIt costs about £1,147 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

£358

Best Round-Trip Price

£558

Fastest flight time

20h 21m

Popular in

July
The best one-way flight price to Portland from United Kingdom in the last 72 hours is £358 (London Heathrow to Portland).
Search Deals
The best round-trip flight price to Portland from United Kingdom in the last 72 hours is £558 (London Heathrow to Portland).
Search Deals
The fastest flight to Portland from United Kingdom takes 20h 21m (London Heathrow to Portland).
Search Deals
July has the highest demand for flights to Portland, with a 14% price increase on average.
Search Deals

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 £69/person, which is 52% 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

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Wed 11/3
Wed 18/3
By creating a price alert you accept our terms of use and privacy policy.

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 £740
Manchester to Portland Flightsfrom £990
Edinburgh Turnhouse to Portland Flightsfrom £744
Newcastle upon Tyne to Portland Flightsfrom £901