Which airlines fly to Portland, Maine?

For flights from United Kingdom to Portland, Maine, most momondo users will book with popular airlines such as British Airways, Virgin Atlantic, Aer Lingus and KLM. Depending on what airport you fly from, you may have other airlines to choose from.

KLM Flights to Portland, Maine

KLM operates around 7 flights into Portland, Maine in any given week. The most common departure point for these flights was from New York John F Kennedy Intl, with the best round-trip KLM deal found being £475 (Birmingham to Portland, Maine). Users have rated KLM 7.8/10 in over 1,386 reviews on momondo.

Virgin Atlantic Flights to Portland, Maine

Virgin Atlantic (7.4/10, 664 reviews) is also a popular choice for flights to Portland, Maine, with deals from as low as £463 from London Heathrow, round-trip. With 6 Virgin Atlantic flights to Portland, Maine on average each week, prices can vary significantly by origin and availability.

How long does it take to fly to Portland, Maine?

The average flight duration from United Kingdom to Portland, Maine depends on which airport you fly into and out of. Flying from London Heathrow to Boston Logan Intl is 7h 35m on average, while flying from Manchester to Boston Logan Intl is 10h 55m on average. Boston Logan Intl is the most popular airport in Portland, Maine.

£454 Cheap Flights to Portland in 2025/26

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Find the cheapest flights from the United Kingdom to Portland, Maine

Round-trip

One-way

Last minute

Cheap return flights

11:40 - 23:44LHR-PWM

17h 04m2 stops

13:16 - 09:15PWM-LHR

14h 59m2 stops

£466American Airlines

Find Deal

Sat, 28 Feb - Tue, 3 Mar

08:15 - 23:04LHR-PWM

19h 49m1 stop

07:09 - 09:30PWM-LHR

21h 21m1 stop

£470JetBlue

Find Deal

Tue, 14 Oct - Tue, 21 Oct

06:30 - 22:19LHR-PWM

19h 49m2 stops

14:30 - 06:55PWM-LHR

11h 25m1 stop

£474Delta

Find Deal

Wed, 29 Oct - Mon, 10 Nov

12:50 - 23:17LHR-PWM

14h 27m1 stop

06:00 - 11:05PWM-LHR

24h 05m1 stop

£481United Airlines

Find Deal

Sat, 1 Nov - Sat, 8 Nov

11:45 - 22:10LHR-PWM

14h 25m1 stop

15:52 - 06:35PWM-LHR

9h 43m1 stop

£487Multiple Airlines

Find Deal

Wed, 29 Oct - Mon, 10 Nov

11:20 - 22:19LHR-PWM

15h 59m1 stop

12:45 - 08:55PWM-LHR

15h 10m1 stop

£487Delta

Find Deal

Mon, 6 Oct - Mon, 20 Oct

08:55 - 22:19LHR-PWM

17h 24m2 stops

13:27 - 09:20PWM-LHR

14h 53m2 stops

£517Virgin Atlantic

Find Deal

Sat, 1 Nov - Sat, 8 Nov

06:35 - 23:59LHR-PWM

21h 24m2 stops

15:00 - 08:25PWM-LHR

12h 25m1 stop

£547United Airlines

Find Deal

Fri, 31 Oct - Fri, 7 Nov

10:55 - 22:19LHR-PWM

16h 24m2 stops

06:00 - 06:25PWM-LHR

19h 25m2 stops

£578Virgin Atlantic

Find Deal

Tue, 14 Oct - Tue, 21 Oct

09:20 - 22:19NCL-PWM

16h 59m2 stops

14:38 - 10:20PWM-NCL

14h 42m2 stops

£595Multiple Airlines

Find Deal

Sat, 1 Nov - Sat, 8 Nov

Fly from

Route

Depart

Return

Price

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Sat 28/2

11:40-23:44

2 stops17h 04m

Portland

Tue 3/3

13:16-09:15

2 stops14h 59m

£466

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Tue 14/10

08:15-23:04

1 stop19h 49m

Portland

Tue 21/10

07:09-09:30

1 stop21h 21m

£470

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Wed 29/10

06:30-22:19

2 stops19h 49m

Portland

Mon 10/11

14:30-06:55

1 stop11h 25m

£474

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Sat 1/11

12:50-23:17

1 stop14h 27m

Portland

Sat 8/11

06:00-11:05

1 stop24h 05m

£481

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Wed 29/10

11:45-22:10

1 stop14h 25m

Portland

Mon 10/11

15:52-06:35

1 stop9h 43m

£487

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Mon 6/10

11:20-22:19

1 stop15h 59m

Portland

Mon 20/10

12:45-08:55

1 stop15h 10m

£487

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Sat 1/11

08:55-22:19

2 stops17h 24m

Portland

Sat 8/11

13:27-09:20

2 stops14h 53m

£517

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Fri 31/10

06:35-23:59

2 stops21h 24m

Portland

Fri 7/11

15:00-08:25

1 stop12h 25m

£547

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Tue 14/10

10:55-22:19

2 stops16h 24m

Portland

Tue 21/10

06:00-06:25

2 stops19h 25m

£578

Newcastle upon TynePortland

NCL - PWM

NCLPWM

Newcastle upon Tyne

Sat 1/11

09:20-22:19

2 stops16h 59m

Portland

Sat 8/11

14:38-10:20

2 stops14h 42m

£595

Flights are sorted by cheapest return flights first.

Showing 1-10 of 17 resultsSorted by cheapest first

Portland, Maine flights insights and trends

Explore insights for your Portland, Maine flight to craft the best travel plan

Prices

Other information

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 £532, are often lower during this time because this is during the off-season. The month of September is another great option to travel to Portland, Maine, with average flight prices from United Kingdom averaging around £544.

What is the cheapest day to depart on your flight to Portland, Maine?

According to our data, Monday is the cheapest day to fly to Portland, Maine from United Kingdom. The lowest ticket price found for a Monday departure recently was £627. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. Be sure to avoid booking your departure on a Friday as prices are generally higher than usual. According to our data, the average ticket price to Portland, Maine on Friday is £765.

What is the cheapest time of day to depart on your flight to Portland, Maine?

Our data shows that the cheapest United Kingdom to Portland, Maine flights are usually those with departure times in the evening. Our users have found flights to Portland, Maine in the evening for as low as £588. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are £772 on average. Flights to Portland, Maine from United Kingdom in the afternoon are generally more expensive because this time of day is more convenient for travellers’ schedules.

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 AIRPORT	February	22% cheaper	Flying from London Heathrow Airport to Portland, Maine costs on average just £500 in February
MOST EXPENSIVE MONTH TO FLY TO PORTLAND, MAINE FROM LONDON HEATHROW AIRPORT	December	44% more expensive	It costs about £922 for flights to Portland, Maine from London Heathrow Airport in December
MOST POPULAR MONTH TO FLY TO PORTLAND, MAINE FROM LONDON HEATHROW AIRPORT	June	459% more users visited	More 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	£466
Fastest flight time	13h 38m
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 £466 (London Heathrow to Portland).

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The fastest flight to Portland from United Kingdom takes 13h 38m (London Heathrow to Portland).

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July has the highest demand for flights to Portland, with a 12% 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 Manchester Airport, with an average price of £58/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.

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 8 as of September 2025.

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.

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.