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 Atlanta Hartsfield-Jackson, with the best round-trip KLM deal found being £509 (Bristol to Portland, Maine). Users have rated KLM 7.7/10 in over 1,411 reviews on momondo.

Virgin Atlantic Flights to Portland, Maine

Virgin Atlantic (7.5/10, 673 reviews) is also a popular choice for flights to Portland, Maine, with deals from as low as £480 from London Heathrow, round-trip. With 7 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 30m 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.

£414 Cheap Flights to Portland in 2025/26

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

Search 100s of travel sites to compare prices.

Filter for what you want

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

Trusted and free

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

Price Alerts

Not ready to book? to track prices.

Search flight deals

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

Round-trip

One-way

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

07:30 - 18:50LHR-PWM

16h 20m2 stops

15:05 - 06:20PWM-LHR

10h 15m1 stop

£573United Airlines

Find Deal

Wed, 4 Feb - Wed, 18 Feb

07:30 - 18:50LHR-PWM

16h 20m2 stops

15:05 - 11:15PWM-LHR

15h 10m2 stops

£577United Airlines

Find Deal

Wed, 4 Feb - Wed, 18 Feb

15:10 - 23:30LHR-PWM

13h 20m1 stop

19:31 - 11:05PWM-LHR

10h 34m1 stop

£596United Airlines

Find Deal

Wed, 4 Feb - Wed, 18 Feb

10:15 - 18:15LHR-PWM

13h 00m1 stop

12:39 - 07:50PWM-LHR

14h 11m1 stop

£618Multiple Airlines

Find Deal

Mon, 8 Dec - Mon, 15 Dec

10:00 - 23:59LHR-PWM

18h 59m2 stops

16:53 - 08:45PWM-LHR

10h 52m1 stop

£621Delta

Find Deal

Mon, 8 Dec - Mon, 15 Dec

08:40 - 23:59LHR-PWM

20h 19m2 stops

14:34 - 13:45PWM-LHR

18h 11m2 stops

£632Delta

Find Deal

Mon, 8 Dec - Mon, 15 Dec

19:15 - 23:49MAN-PWM

32h 34m2 stops

06:30 - 19:45PWM-MAN

32h 15m2 stops

£779Scandinavian Airlines

Find Deal

Thu, 26 Mar - Mon, 30 Mar

12:50 - 23:22LHR-PWM

15h 32m1 stop

19:27 - 21:20PWM-LHR

20h 53m1 stop

£782Lufthansa

Find Deal

Tue, 30 Dec - Tue, 6 Jan

19:15 - 23:49MAN-PWM

32h 34m2 stops

06:30 - 18:30PWM-MAN

31h 00m2 stops

£825Scandinavian Airlines

Find Deal

Thu, 26 Mar - Mon, 30 Mar

12:00 - 23:30LHR-PWM

16h 30m2 stops

06:00 - 06:30PWM-LHR

19h 30m3 stops

£845Multiple Airlines

Find Deal

Wed, 4 Feb - Wed, 18 Feb

Fly from

Route

Depart

Return

Price

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Wed 4/2

07:30-18:50

2 stops16h 20m

Portland

Wed 18/2

15:05-06:20

1 stop10h 15m

£573

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Wed 4/2

07:30-18:50

2 stops16h 20m

Portland

Wed 18/2

15:05-11:15

2 stops15h 10m

£577

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Wed 4/2

15:10-23:30

1 stop13h 20m

Portland

Wed 18/2

19:31-11:05

1 stop10h 34m

£596

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Mon 8/12

10:15-18:15

1 stop13h 00m

Portland

Mon 15/12

12:39-07:50

1 stop14h 11m

£618

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Mon 8/12

10:00-23:59

2 stops18h 59m

Portland

Mon 15/12

16:53-08:45

1 stop10h 52m

£621

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Mon 8/12

08:40-23:59

2 stops20h 19m

Portland

Mon 15/12

14:34-13:45

2 stops18h 11m

£632

ManchesterPortland

MAN - PWM

MANPWM

Manchester

Thu 26/3

19:15-23:49

2 stops32h 34m

Portland

Mon 30/3

06:30-19:45

2 stops32h 15m

£779

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Tue 30/12

12:50-23:22

1 stop15h 32m

Portland

Tue 6/1

19:27-21:20

1 stop20h 53m

£782

ManchesterPortland

MAN - PWM

MANPWM

Manchester

Thu 26/3

19:15-23:49

2 stops32h 34m

Portland

Mon 30/3

06:30-18:30

2 stops31h 00m

£825

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Wed 4/2

12:00-23:30

2 stops16h 30m

Portland

Wed 18/2

06:00-06:30

3 stops19h 30m

£845

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 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 October. Flight prices, which tend to average around £527, 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 £548.

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 £649. 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 £792.

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 £609. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are £799 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 £510 in February
MOST EXPENSIVE MONTH TO FLY TO PORTLAND, MAINE FROM LONDON HEATHROW AIRPORT	December	48% more expensive	It costs about £973 for flights to Portland, Maine from London Heathrow Airport in December
MOST POPULAR MONTH TO FLY TO PORTLAND, MAINE FROM LONDON HEATHROW AIRPORT	June	350% 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	£414
Best Round-Trip Price	£573
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 £414 (London Heathrow to Portland).

Search Deals

The best round-trip flight price to Portland from United Kingdom in the last 72 hours is £573 (London Heathrow to Portland).

Search Deals

The fastest flight to Portland from United Kingdom takes 14h 42m (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 Manchester Airport, with an average price of £60/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 38% 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 8 as of November 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.

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.