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Cheap flights from London Heathrow Airport to Portland from £350

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 6/5. 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
11:55 - 23:36
LHR
-
PWM
16h 41m
1 stop
JetBlue Logo
06:00 - 09:30
PWM
-
LHR
22h 30m
1 stop
£530JetBlue
Mon, 11 May - Mon, 18 May
JetBlue Logo
11:55 - 22:59
LHR
-
PWM
16h 04m
1 stop
JetBlue Logo
07:30 - 09:30
PWM
-
LHR
21h 00m
1 stop
£534JetBlue
Tue, 14 Apr - Tue, 21 Apr
JetBlue Logo
08:15 - 23:02
LHR
-
PWM
19h 47m
1 stop
JetBlue Logo
06:00 - 09:30
PWM
-
LHR
22h 30m
1 stop
£554JetBlue
Wed, 29 Apr - Wed, 6 May
JetBlue Logo
11:55 - 22:59
LHR
-
PWM
16h 04m
1 stop
JetBlue Logo
07:30 - 20:45
PWM
-
LHR
32h 15m
1 stop
£559JetBlue
Thu, 16 Apr - Thu, 23 Apr
JetBlue Logo
11:55 - 22:07
LHR
-
PWM
15h 12m
1 stop
JetBlue Logo
14:17 - 09:30
PWM
-
LHR
14h 13m
1 stop
£579JetBlue
Sat, 12 Sep - Sat, 19 Sep
JetBlue Logo
11:55 - 23:36
LHR
-
PWM
16h 41m
1 stop
JetBlue Logo
06:00 - 20:45
PWM
-
LHR
9h 45m
1 stop
£585JetBlue
Fri, 1 May - Tue, 5 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
£588JetBlue
Fri, 1 May - Tue, 5 May
JetBlue Logo
08:15 - 23:57
LHR
-
PWM
20h 42m
1 stop
JetBlue Logo
14:17 - 09:30
PWM
-
LHR
14h 13m
1 stop
£589JetBlue
Thu, 3 Sep - Wed, 7 Oct
JetBlue Logo
11:55 - 23:36
LHR
-
PWM
16h 41m
1 stop
JetBlue Logo
06:00 - 20:45
PWM
-
LHR
9h 45m
1 stop
£590JetBlue
Fri, 1 May - Tue, 5 May
JetBlue Logo
08:15 - 23:36
LHR
-
PWM
20h 21m
1 stop
JetBlue Logo
06:00 - 20:45
PWM
-
LHR
9h 45m
1 stop
£593JetBlue
Fri, 1 May - Fri, 8 May

TAP AIR PORTUGAL flights from London Heathrow Airport to Portland, Maine

Our best TAP AIR PORTUGAL deals on London Heathrow Airport to Portland, Maine flight tickets
TAP AIR PORTUGAL
16 Aug
LHR16:35London Heathrow
49h 54m
2 stops
PWM13:29Portland
23 Aug
PWM06:00Portland
35h 00m
2 stops
LHR22:00London Heathrow
£856
TAP AIR PORTUGAL
9 Aug
LHR16:35London Heathrow
49h 54m
2 stops
PWM13:29Portland
23 Aug
PWM06:00Portland
31h 50m
2 stops
LHR18:50London Heathrow
£938
TAP AIR PORTUGAL
15 Aug
LHR08:00London Heathrow
34h 29m
2 stops
PWM13:29Portland
22 Aug
PWM14:25Portland
26h 35m
2 stops
LHR22:00London Heathrow
£938

JetBlue flights from London Heathrow Airport to Portland, Maine

Our best JetBlue deals on London Heathrow Airport to Portland, Maine flight tickets
JetBlue
11 May
LHR11:55London Heathrow
16h 41m
1 stop
PWM23:36Portland
18 May
PWM06:00Portland
22h 30m
1 stop
LHR09:30London Heathrow
£530
JetBlue
14 Apr
LHR11:55London Heathrow
16h 04m
1 stop
PWM22:59Portland
21 Apr
PWM07:30Portland
21h 00m
1 stop
LHR09:30London Heathrow
£534
JetBlue
29 Apr
LHR08:15London Heathrow
19h 47m
1 stop
PWM23:02Portland
6 May
PWM06:00Portland
22h 30m
1 stop
LHR09:30London Heathrow
£554

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 19 March 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

Mon 11/5

11:55-23:36

1 stop16h 41m

Portland

Mon 18/5

06:00-09:30

1 stop22h 30m

£530

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Tue 14/4

11:55-22:59

1 stop16h 04m

Portland

Tue 21/4

07:30-09:30

1 stop21h 00m

£534

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Wed 29/4

08:15-23:02

1 stop19h 47m

Portland

Wed 6/5

06:00-09:30

1 stop22h 30m

£554

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 16/4

11:55-22:59

1 stop16h 04m

Portland

Thu 23/4

07:30-20:45

1 stop32h 15m

£559

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Sat 12/9

11:55-22:07

1 stop15h 12m

Portland

Sat 19/9

14:17-09:30

1 stop14h 13m

£579
Fastest return journey

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Fri 1/5

11:55-23:36

1 stop16h 41m

Portland

Tue 5/5

06:00-20:45

1 stop9h 45m

£585

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Fri 1/5

11:55-23:36

1 stop16h 41m

Portland

Tue 5/5

06:00-20:45

1 stop9h 45m

£588

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 3/9

08:15-23:57

1 stop20h 42m

Portland

Wed 7/10

14:17-09:30

1 stop14h 13m

£589

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Fri 1/5

11:55-23:36

1 stop16h 41m

Portland

Tue 5/5

06:00-20:45

1 stop9h 45m

£590

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Fri 1/5

08:15-23:36

1 stop20h 21m

Portland

Fri 8/5

06:00-20:45

1 stop9h 45m

£593

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 £509, are often lower during this time because this is during the off-season. The month of November is another great option to travel to Portland, Maine, with average flight prices from London Heathrow Airport averaging around £551.

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

You could potentially save up to 24% 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

16h 07m

Direct flights

None
The fastest flight from London Heathrow Airport to Portland, Maine takes 16h 07m
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

  • 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 16h 07m, 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
Virgin AtlanticPriceFrom £475Free CancellationRating
7.5
682 reviews
Search Virgin Atlantic flights
IcelandairPriceFrom £493Free CancellationRating
7.1
622 reviews
Search Icelandair flights
KLMPriceFrom £503Free CancellationRating
7.8
1,472 reviews
Search KLM flights
United AirlinesPriceFrom £560Free CancellationRating
7.4
9,441 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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Airports servicing Maine

Bangor Airport