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Cheap flights from London Heathrow Airport to Portland from $496

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 5/27. 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 round-trip flights

Enter your travel dates to find the best prices.
JetBlue Logo
8:15 am - 11:58 pm
LHR
-
PWM
20h 43m
1 stop
JetBlue Logo
2:37 pm - 8:45 pm
PWM
-
LHR
25h 08m
1 stop
$732JetBlue
Wed, May 27 - Wed, Jun 3
JetBlue Logo
8:15 am - 11:58 pm
LHR
-
PWM
20h 43m
1 stop
JetBlue Logo
2:30 pm - 9:30 am
PWM
-
LHR
14h 00m
1 stop
$861JetBlue
Fri, Jun 5 - Sat, Jun 13
JetBlue Logo
8:15 am - 12:25 am
LHR
-
PWM
21h 10m
1 stop
JetBlue Logo
6:00 am - 8:45 pm
PWM
-
LHR
9h 45m
1 stop
$883JetBlue
Wed, Jun 17 - Mon, Jun 22
Scandinavian Airlines Logo
7:05 am - 12:43 am
LHR
-
PWM
22h 38m
2 stops
Scandinavian Airlines Logo
6:25 am - 9:35 pm
PWM
-
LHR
34h 10m
2 stops
$895Scandinavian Airlines
Wed, May 27 - Wed, Jun 3
JetBlue Logo
8:15 am - 11:03 pm
LHR
-
PWM
19h 48m
1 stop
JetBlue Logo
6:00 am - 9:30 am
PWM
-
LHR
22h 30m
1 stop
$899JetBlue
Mon, May 18 - Mon, May 25
JetBlue Logo
8:40 am - 11:58 pm
LHR
-
PWM
20h 18m
2 stops
JetBlue Logo
6:00 am - 8:45 pm
PWM
-
LHR
9h 45m
1 stop
$925JetBlue
Fri, May 29 - Thu, Jun 4
Scandinavian Airlines Logo
7:05 am - 12:43 am
LHR
-
PWM
22h 38m
2 stops
Scandinavian Airlines Logo
6:25 am - 9:35 am
PWM
-
LHR
22h 10m
2 stops
$927Scandinavian Airlines
Fri, May 29 - Thu, Jun 4
JetBlue Logo
11:55 am - 12:25 am
LHR
-
PWM
17h 30m
1 stop
JetBlue Logo
2:30 pm - 9:30 am
PWM
-
LHR
14h 00m
1 stop
$950JetBlue
Thu, Jun 25 - Thu, Jul 2
Scandinavian Airlines Logo
7:05 am - 12:43 am
LHR
-
PWM
22h 38m
2 stops
Scandinavian Airlines Logo
2:38 pm - 4:00 pm
PWM
-
LHR
20h 22m
2 stops
$954Scandinavian Airlines
Tue, May 26 - Tue, Jun 2
JetBlue Logo
11:55 am - 12:30 pm
LHR
-
PWM
29h 35m
1 stop
JetBlue Logo
6:00 am - 8:45 pm
PWM
-
LHR
9h 45m
1 stop
$958JetBlue
Mon, Jun 15 - Mon, Jun 22

JetBlue flights from London Heathrow Airport to Portland, Maine

Our best JetBlue deals on London Heathrow Airport to Portland, Maine flight tickets
JetBlue
May 27
LHR8:15 amLondon Heathrow
20h 43m
1 stop
PWM11:58 pmPortland
Jun 3
PWM2:37 pmPortland
25h 08m
1 stop
LHR8:45 pmLondon Heathrow
$732
JetBlue
Jun 5
LHR8:15 amLondon Heathrow
20h 43m
1 stop
PWM11:58 pmPortland
Jun 13
PWM2:30 pmPortland
14h 00m
1 stop
LHR9:30 amLondon Heathrow
$861
JetBlue
Jun 17
LHR8:15 amLondon Heathrow
21h 10m
1 stop
PWM12:25 amPortland
Jun 22
PWM6:00 amPortland
9h 45m
1 stop
LHR8:45 pmLondon Heathrow
$883

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
May 27
LHR7:05 amLondon Heathrow
22h 38m
2 stops
PWM12:43 amPortland
Jun 3
PWM6:25 amPortland
34h 10m
2 stops
LHR9:35 pmLondon Heathrow
$895
Scandinavian Airlines
May 29
LHR7:05 amLondon Heathrow
22h 38m
2 stops
PWM12:43 amPortland
Jun 4
PWM6:25 amPortland
22h 10m
2 stops
LHR9:35 amLondon Heathrow
$927
Scandinavian Airlines
May 26
LHR7:05 amLondon Heathrow
22h 38m
2 stops
PWM12:43 amPortland
Jun 2
PWM2:38 pmPortland
20h 22m
2 stops
LHR4:00 pmLondon Heathrow
$954

momondo Fare Finder

 
Customize 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 832,500 searches. Data last updated May 2, 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 round-trip

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Wed 5/27

8:15 am-11:58 pm

1 stop20h 43m

Portland

Wed 6/3

2:37 pm-8:45 pm

1 stop25h 08m

$732

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Fri 6/5

8:15 am-11:58 pm

1 stop20h 43m

Portland

Sat 6/13

2:30 pm-9:30 am

1 stop14h 00m

$861

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Wed 6/17

8:15 am-12:25 am

1 stop21h 10m

Portland

Mon 6/22

6:00 am-8:45 pm

1 stop9h 45m

$883

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Wed 5/27

7:05 am-12:43 am

2 stops22h 38m

Portland

Wed 6/3

6:25 am-9:35 pm

2 stops34h 10m

$895

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Mon 5/18

8:15 am-11:03 pm

1 stop19h 48m

Portland

Mon 5/25

6:00 am-9:30 am

1 stop22h 30m

$899
Quickest round-trip

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Fri 5/29

8:40 am-11:58 pm

2 stops20h 18m

Portland

Thu 6/4

6:00 am-8:45 pm

1 stop9h 45m

$925

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Fri 5/29

7:05 am-12:43 am

2 stops22h 38m

Portland

Thu 6/4

6:25 am-9:35 am

2 stops22h 10m

$927

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 6/25

11:55 am-12:25 am

1 stop17h 30m

Portland

Thu 7/2

2:30 pm-9:30 am

1 stop14h 00m

$950

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Tue 5/26

7:05 am-12:43 am

2 stops22h 38m

Portland

Tue 6/2

2:38 pm-4:00 pm

2 stops20h 22m

$954

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Mon 6/15

11:55 am-12:30 pm

1 stop29h 35m

Portland

Mon 6/22

6:00 am-8:45 pm

1 stop9h 45m

$958

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 $678, are often lower during this time because this is during the off-season. If you aren’t able to travel to Portland, Maine during the month of February, then flying in November is also cheap. Prices for this month can be found on momondo for an average of $734.

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 round-trip 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

14h 40m

Direct flights

None
The fastest flight from London Heathrow Airport to Portland, Maine takes 14h 40m
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. A reasonable flight in good conditions will take 14h 40m.

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from London Heathrow Airport to Portland Airport.

  • What documentation or ID do you need to fly to Portland Airport?

    The required travel and health documents for your Portland Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Portland Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Traveling to a place near Portland?

Book flights to Portland if you plan to visit one of these locations
North Conway
Boothbay Harbor
Jackson
Conway
Freeport
Lewiston
Brunswick
Bartlett
Gorham
Auburn
Windham
Intervale
Bath
Oxford
Georgetown
Falmouth
Tamworth

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from London to Portland for you.

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

Yes. momondo allows you to filter the results for London to Portland flights to just show those with 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?

Of course. momondo tracks the price of London to Portland flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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