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Cheap flights from London Heathrow Airport to Portland from £505

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London Heathrow Airport to Portland departing on 29/6. 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

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Find the cheapest flights from London Heathrow Airport to Portland

Cheap return flights

Enter your travel dates to find the best prices.
JetBlue Logo
08:15 - 23:58
LHR
-
PWM
20h 43m
1 stop
JetBlue Logo
14:30 - 09:30
PWM
-
LHR
14h 00m
1 stop
£520JetBlue
Sun, 7 Jun - Sat, 13 Jun
JetBlue Logo
08:15 - 23:58
LHR
-
PWM
20h 43m
1 stop
JetBlue Logo
06:00 - 20:45
PWM
-
LHR
9h 45m
1 stop
£540JetBlue
Mon, 8 Jun - Tue, 22 Sep
JetBlue Logo
08:15 - 23:52
LHR
-
PWM
20h 37m
1 stop
JetBlue Logo
06:00 - 20:45
PWM
-
LHR
9h 45m
1 stop
£542JetBlue
Wed, 16 Sep - Mon, 21 Sep
JetBlue Logo
08:15 - 23:58
LHR
-
PWM
20h 43m
1 stop
JetBlue Logo
06:00 - 09:30
PWM
-
LHR
22h 30m
1 stop
£546JetBlue
Fri, 29 May - Sun, 7 Jun
JetBlue Logo
08:15 - 23:58
LHR
-
PWM
20h 43m
1 stop
JetBlue Logo
06:00 - 20:45
PWM
-
LHR
9h 45m
1 stop
£557JetBlue
Thu, 4 Jun - Thu, 11 Jun
JetBlue Logo
08:15 - 23:52
LHR
-
PWM
20h 37m
1 stop
JetBlue Logo
06:00 - 20:45
PWM
-
LHR
9h 45m
1 stop
£613JetBlue
Thu, 24 Sep - Tue, 29 Sep
JetBlue Logo
11:55 - 12:30
LHR
-
PWM
29h 35m
1 stop
JetBlue Logo
14:30 - 09:30
PWM
-
LHR
14h 00m
1 stop
£624JetBlue
Mon, 22 Jun - Mon, 29 Jun
JetBlue Logo
07:25 - 23:43
LHR
-
PWM
21h 18m
1 stop
JetBlue Logo
06:30 - 09:30
PWM
-
LHR
22h 00m
1 stop
£629JetBlue
Mon, 2 Nov - Fri, 6 Nov
JetBlue Logo
08:15 - 23:58
LHR
-
PWM
20h 43m
1 stop
JetBlue Logo
06:00 - 06:30
PWM
-
LHR
19h 30m
2 stops
£641JetBlue
Thu, 4 Jun - Thu, 11 Jun
JetBlue Logo
08:15 - 23:58
LHR
-
PWM
20h 43m
1 stop
JetBlue Logo
06:00 - 09:30
PWM
-
LHR
22h 30m
1 stop
£654JetBlue
Sun, 7 Jun - Sun, 14 Jun

JetBlue flights from London Heathrow Airport to Portland, Maine

Our best JetBlue deals on London Heathrow Airport to Portland, Maine flight tickets
JetBlue
7 Jun
LHR08:15London Heathrow
20h 43m
1 stop
PWM23:58Portland
13 Jun
PWM14:30Portland
14h 00m
1 stop
LHR09:30London Heathrow
£520
JetBlue
8 Jun
LHR08:15London Heathrow
20h 43m
1 stop
PWM23:58Portland
22 Sept
PWM06:00Portland
9h 45m
1 stop
LHR20:45London Heathrow
£540
JetBlue
16 Sept
LHR08:15London Heathrow
20h 37m
1 stop
PWM23:52Portland
21 Sept
PWM06:00Portland
9h 45m
1 stop
LHR20:45London Heathrow
£542

Scandinavian Airlines flights from London Heathrow Airport to Portland, Maine

Our best Scandinavian Airlines deals on London Heathrow Airport to Portland, Maine flight tickets
Scandinavian Airlines
8 Jun
LHR07:05London Heathrow
22h 47m
2 stops
PWM00:52Portland
15 Jun
PWM14:59Portland
22h 31m
2 stops
LHR18:30London Heathrow
£681
Scandinavian Airlines
8 Jun
LHR07:05London Heathrow
22h 47m
2 stops
PWM00:52Portland
15 Jun
PWM14:59Portland
18h 36m
3 stops
LHR14:35London Heathrow
£714
Scandinavian Airlines
4 Jun
LHR18:40London Heathrow
35h 03m
2 stops
PWM00:43Portland
11 Jun
PWM06:25Portland
22h 10m
2 stops
LHR09:35London Heathrow
£787

momondo Fare Finder

 
Customise your flight search to find flights from London Heathrow Airport to Portland, Maine that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 279,928 searches. Data last updated 9 May 2026.
Use the filters below to find and compare flights from London Heathrow Airport to Portland, Maine that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Sun 7/6

08:15-23:58

1 stop20h 43m

Portland

Sat 13/6

14:30-09:30

1 stop14h 00m

£520

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Mon 8/6

08:15-23:58

1 stop20h 43m

Portland

Tue 22/9

06:00-20:45

1 stop9h 45m

£540
Fastest return journey

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Wed 16/9

08:15-23:52

1 stop20h 37m

Portland

Mon 21/9

06:00-20:45

1 stop9h 45m

£542

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Fri 29/5

08:15-23:58

1 stop20h 43m

Portland

Sun 7/6

06:00-09:30

1 stop22h 30m

£546

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 4/6

08:15-23:58

1 stop20h 43m

Portland

Thu 11/6

06:00-20:45

1 stop9h 45m

£557

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 24/9

08:15-23:52

1 stop20h 37m

Portland

Tue 29/9

06:00-20:45

1 stop9h 45m

£613

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Mon 22/6

11:55-12:30

1 stop29h 35m

Portland

Mon 29/6

14:30-09:30

1 stop14h 00m

£624

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Mon 2/11

07:25-23:43

1 stop21h 18m

Portland

Fri 6/11

06:30-09:30

1 stop22h 00m

£629

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 4/6

08:15-23:58

1 stop20h 43m

Portland

Thu 11/6

06:00-06:30

2 stops19h 30m

£641

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Sun 7/6

08:15-23:58

1 stop20h 43m

Portland

Sun 14/6

06:00-09:30

1 stop22h 30m

£654

Flights are sorted by cheapest return flights first.

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

See travel insights to Portland from

How to get the cheapest flight ticket from London Heathrow Airport to Portland, Maine

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between London Heathrow Airport and Portland, Maine?

What is the cheapest month to fly to Portland, Maine?

The cheapest month to fly to Portland, Maine from London Heathrow Airport is in February. Flight prices, which tend to average around £497, are often lower during this time because this is during the off-season. The month of May is another great option to travel to Portland, Maine, with average flight prices from London Heathrow Airport averaging around £529.

Can stopping save me money on London Heathrow Airport to Portland, Maine flights?

You could potentially save up to 3% on your flight if you consider stops on a London Heathrow Airport to Portland, Maine flight.

When to book flights from London Heathrow Airport to Portland, Maine

Are you open to changing your travel dates? Check out the ideal times to fly from London Heathrow Airport to Portland, Maine according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap London Heathrow Airport to Portland, Maine (LHR to PWM) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London Heathrow Airport to Portland, Maine

Fastest flight time

13h 39m

Direct flights

None
The fastest flight from London Heathrow Airport to Portland, Maine takes 13h 39m
There are no direct flights from London Heathrow Airport to Portland, Maine. There are no popular flight routes from London Heathrow Airport to Portland, Maine.
Search flight deals

Frequently asked questions about flying from London Heathrow Airport to Portland, Maine

  • How far is London Heathrow to Portland by plane?

    A flight from London Heathrow to Portland will travel around 3170.3 mi. Flights usually cover this in 13h 39m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from London Heathrow Airport to Portland Airport?

    Prices for flights from London Heathrow Airport to Portland Airport are updated daily.

  • How many operators does momondo search for flights from London Heathrow Airport to Portland Airport?

  • How old do you have to be to fly from London Heathrow Airport to Portland Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from London Heathrow Airport 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.

  • What is the most popular airline from London Heathrow Airport to Portland, Maine?

Best airlines flying from London Heathrow Airport to Portland, Maine

Compare and see reviews for airlines that fly from London Heathrow Airport to Portland, Maine with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom £535Free CancellationRating
7.4
9,692 reviews
Search United Airlines flights

Travelling to a place near Portland?

Book flights to Portland if you plan to visit one of these locations
Bath

Why use momondo?

Why should I use momondo to find a flight deal from London to Portland?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Portland from London.

Can I find flights from London to Portland with flexible booking policies on momondo?

All flight searches from London to Portland on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from London 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 from London to Portland.

I’m not ready to book a flight from London to Portland right now. Can momondo alert me if prices change?

Price alerts on flights to Portland from London 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, Maine trip

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