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Cheap flights from London Heathrow Airport to Portland from $466

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 5/6. 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 round-trip flights

Enter your travel dates to find the best prices.
JetBlue Logo
11:55 am - 11:36 pm
LHR
-
PWM
16h 41m
1 stop
JetBlue Logo
6:00 am - 9:30 am
PWM
-
LHR
22h 30m
1 stop
$706JetBlue
mån, maj 11 - mån, maj 18
JetBlue Logo
11:55 am - 10:59 pm
LHR
-
PWM
16h 04m
1 stop
JetBlue Logo
7:30 am - 9:30 am
PWM
-
LHR
21h 00m
1 stop
$712JetBlue
tis, apr 14 - tis, apr 21
JetBlue Logo
8:15 am - 11:02 pm
LHR
-
PWM
19h 47m
1 stop
JetBlue Logo
6:00 am - 9:30 am
PWM
-
LHR
22h 30m
1 stop
$738JetBlue
ons, apr 29 - ons, maj 6
JetBlue Logo
11:55 am - 10:59 pm
LHR
-
PWM
16h 04m
1 stop
JetBlue Logo
7:30 am - 8:45 pm
PWM
-
LHR
32h 15m
1 stop
$745JetBlue
tors, apr 16 - tors, apr 23
JetBlue Logo
11:55 am - 10:07 pm
LHR
-
PWM
15h 12m
1 stop
JetBlue Logo
2:17 pm - 9:30 am
PWM
-
LHR
14h 13m
1 stop
$772JetBlue
lör, sep 12 - lör, sep 19
JetBlue Logo
11:55 am - 11:36 pm
LHR
-
PWM
16h 41m
1 stop
JetBlue Logo
6:00 am - 8:45 pm
PWM
-
LHR
9h 45m
1 stop
$780JetBlue
fre, maj 1 - tis, maj 5
JetBlue Logo
11:55 am - 11:36 pm
LHR
-
PWM
16h 41m
1 stop
JetBlue Logo
6:00 am - 8:45 pm
PWM
-
LHR
9h 45m
1 stop
$784JetBlue
fre, maj 1 - tis, maj 5
JetBlue Logo
8:15 am - 11:57 pm
LHR
-
PWM
20h 42m
1 stop
JetBlue Logo
2:17 pm - 9:30 am
PWM
-
LHR
14h 13m
1 stop
$785JetBlue
tors, sep 3 - ons, okt 7
JetBlue Logo
11:55 am - 11:36 pm
LHR
-
PWM
16h 41m
1 stop
JetBlue Logo
6:00 am - 8:45 pm
PWM
-
LHR
9h 45m
1 stop
$787JetBlue
fre, maj 1 - tis, maj 5
JetBlue Logo
8:15 am - 11:36 pm
LHR
-
PWM
20h 21m
1 stop
JetBlue Logo
6:00 am - 8:45 pm
PWM
-
LHR
9h 45m
1 stop
$791JetBlue
fre, maj 1 - fre, maj 8

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
Aug 16
LHR4:35 pmLondon Heathrow
49h 54m
2 stops
PWM1:29 pmPortland
Aug 23
PWM6:00 amPortland
35h 00m
2 stops
LHR10:00 pmLondon Heathrow
$1,141
TAP AIR PORTUGAL
Aug 9
LHR4:35 pmLondon Heathrow
49h 54m
2 stops
PWM1:29 pmPortland
Aug 23
PWM6:00 amPortland
31h 50m
2 stops
LHR6:50 pmLondon Heathrow
$1,250
TAP AIR PORTUGAL
Aug 15
LHR8:00 amLondon Heathrow
34h 29m
2 stops
PWM1:29 pmPortland
Aug 22
PWM2:25 pmPortland
26h 35m
2 stops
LHR10:00 pmLondon Heathrow
$1,251

JetBlue flights from London Heathrow Airport to Portland, Maine

Our best JetBlue deals on London Heathrow Airport to Portland, Maine flight tickets
JetBlue
May 11
LHR11:55 amLondon Heathrow
16h 41m
1 stop
PWM11:36 pmPortland
May 18
PWM6:00 amPortland
22h 30m
1 stop
LHR9:30 amLondon Heathrow
$706
JetBlue
Apr 14
LHR11:55 amLondon Heathrow
16h 04m
1 stop
PWM10:59 pmPortland
Apr 21
PWM7:30 amPortland
21h 00m
1 stop
LHR9:30 amLondon Heathrow
$712
JetBlue
Apr 29
LHR8:15 amLondon Heathrow
19h 47m
1 stop
PWM11:02 pmPortland
May 6
PWM6:00 amPortland
22h 30m
1 stop
LHR9:30 amLondon Heathrow
$738

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 mars 19, 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

mån 5/11

11:55 am-11:36 pm

1 stop16h 41m

Portland

mån 5/18

6:00 am-9:30 am

1 stop22h 30m

$706

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

tis 4/14

11:55 am-10:59 pm

1 stop16h 04m

Portland

tis 4/21

7:30 am-9:30 am

1 stop21h 00m

$712

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

ons 4/29

8:15 am-11:02 pm

1 stop19h 47m

Portland

ons 5/6

6:00 am-9:30 am

1 stop22h 30m

$738

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

tors 4/16

11:55 am-10:59 pm

1 stop16h 04m

Portland

tors 4/23

7:30 am-8:45 pm

1 stop32h 15m

$745

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

lör 9/12

11:55 am-10:07 pm

1 stop15h 12m

Portland

lör 9/19

2:17 pm-9:30 am

1 stop14h 13m

$772
Quickest round-trip

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

fre 5/1

11:55 am-11:36 pm

1 stop16h 41m

Portland

tis 5/5

6:00 am-8:45 pm

1 stop9h 45m

$780

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

fre 5/1

11:55 am-11:36 pm

1 stop16h 41m

Portland

tis 5/5

6:00 am-8:45 pm

1 stop9h 45m

$784

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

tors 9/3

8:15 am-11:57 pm

1 stop20h 42m

Portland

ons 10/7

2:17 pm-9:30 am

1 stop14h 13m

$785

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

fre 5/1

11:55 am-11:36 pm

1 stop16h 41m

Portland

tis 5/5

6:00 am-8:45 pm

1 stop9h 45m

$787

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

fre 5/1

8:15 am-11:36 pm

1 stop20h 21m

Portland

fre 5/8

6:00 am-8:45 pm

1 stop9h 45m

$791

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 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

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. A reasonable flight in good conditions will take 16h 07m.

  • 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
Oxford
Bath
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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