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Cheap flights from London Heathrow Airport to Portland from $591

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 11/28. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from London Heathrow Airport to Portland

Cheap round-trip flights

American Airlines Logo
11:40 am - 10:32 pmLHR-PWM
15h 52m2 stops
American Airlines Logo
4:14 pm - 7:50 amPWM-LHR
10h 36m1 stop
$636American Airlines
Find Deal
sáb., feb. 28 - mar., mar. 3
JetBlue Logo
8:15 am - 11:04 pmLHR-PWM
19h 49m1 stop
JetBlue Logo
7:09 am - 9:30 amPWM-LHR
21h 21m1 stop
$641JetBlue
Find Deal
mar., oct. 14 - mar., oct. 21
Virgin Atlantic Logo
6:30 am - 10:19 pmLHR-PWM
19h 49m2 stops
Virgin Atlantic Logo
1:25 pm - 10:15 amPWM-LHR
15h 50m2 stops
$646Virgin Atlantic
Find Deal
mié., oct. 29 - lun., nov. 10
Multiple Airlines Logo
11:45 am - 10:10 pmLHR-PWM
14h 25m1 stop
Multiple Airlines Logo
7:02 am - 7:20 amPWM-LHR
19h 18m1 stop
$663Multiple Airlines
Find Deal
mié., oct. 29 - lun., nov. 10
Delta Logo
8:40 am - 12:34 amLHR-PWM
20h 54m2 stops
Delta Logo
2:38 pm - 11:25 amPWM-LHR
15h 47m1 stop
$673Delta
Find Deal
sáb., sep. 27 - lun., oct. 6
Delta Logo
12:55 pm - 12:34 amLHR-PWM
16h 39m1 stop
Delta Logo
6:50 am - 9:15 amPWM-LHR
21h 25m1 stop
$691Delta
Find Deal
sáb., sep. 27 - lun., oct. 6
United Airlines Logo
6:35 am - 11:59 pmLHR-PWM
21h 24m2 stops
United Airlines Logo
7:44 pm - 11:05 amPWM-LHR
10h 21m1 stop
$744United Airlines
Find Deal
jue., oct. 30 - jue., nov. 6
United Airlines Logo
6:35 am - 11:59 pmLHR-PWM
21h 24m2 stops
United Airlines Logo
3:00 pm - 8:25 amPWM-LHR
12h 25m1 stop
$746United Airlines
Find Deal
vie., oct. 31 - vie., nov. 7
Virgin Atlantic Logo
9:35 am - 10:19 pmLHR-PWM
17h 44m2 stops
Virgin Atlantic Logo
1:27 pm - 12:15 pmPWM-LHR
17h 48m2 stops
$789Virgin Atlantic
Find Deal
mar., oct. 14 - mar., oct. 21
Multiple Airlines Logo
9:30 am - 6:23 pmLHR-PWM
13h 53m2 stops
Multiple Airlines Logo
8:00 am - 6:30 amPWM-LHR
17h 30m3 stops
$989Multiple Airlines
Find Deal
mar., oct. 14 - mar., oct. 21

American Airlines flights from London Heathrow Airport to Portland, Maine

Our best American Airlines deals on London Heathrow Airport to Portland, Maine flight tickets
American Airlines
Feb 28
LHR11:40 amLondon Heathrow
15h 52m
2 stops
PWM10:32 pmPortland
Mar 3
PWM4:14 pmPortland
10h 36m
1 stop
LHR7:50 amLondon Heathrow
$636
Find similar
American Airlines
Feb 28
LHR1:10 pmLondon Heathrow
14h 22m
1 stop
PWM10:32 pmPortland
Mar 3
PWM1:16 pmPortland
12h 19m
1 stop
LHR6:35 amLondon Heathrow
$680
Find similar
American Airlines
Mar 10
LHR1:10 pmLondon Heathrow
14h 30m
2 stops
PWM11:40 pmPortland
Mar 14
PWM4:11 pmPortland
13h 04m
2 stops
LHR9:15 amLondon Heathrow
$3,377
Find similar

Virgin Atlantic flights from London Heathrow Airport to Portland, Maine

Our best Virgin Atlantic deals on London Heathrow Airport to Portland, Maine flight tickets
Virgin Atlantic
Oct 29
LHR6:30 amLondon Heathrow
19h 49m
2 stops
PWM10:19 pmPortland
Nov 10
PWM1:25 pmPortland
15h 50m
2 stops
LHR10:15 amLondon Heathrow
$646
Find similar
Virgin Atlantic
Oct 14
LHR9:35 amLondon Heathrow
17h 44m
2 stops
PWM10:19 pmPortland
Oct 21
PWM1:27 pmPortland
17h 48m
2 stops
LHR12:15 pmLondon Heathrow
$789
Find similar
Virgin Atlantic
Oct 26
LHR10:45 amLondon Heathrow
15h 34m
1 stop
PWM10:19 pmPortland
Nov 1
PWM1:27 pmPortland
38h 23m
2 stops
LHR7:50 amLondon Heathrow
$1,207
Find similar

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 septiembre 16, 2025.
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

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

sáb. 2/28

11:40 am-10:32 pm

2 stops15h 52m

Portland

mar. 3/3

4:14 pm-7:50 am

1 stop10h 36m

$636

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

mar. 10/14

8:15 am-11:04 pm

1 stop19h 49m

Portland

mar. 10/21

7:09 am-9:30 am

1 stop21h 21m

$641

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

mié. 10/29

6:30 am-10:19 pm

2 stops19h 49m

Portland

lun. 11/10

1:25 pm-10:15 am

2 stops15h 50m

$646

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

mié. 10/29

11:45 am-10:10 pm

1 stop14h 25m

Portland

lun. 11/10

7:02 am-7:20 am

1 stop19h 18m

$663

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

sáb. 9/27

8:40 am-12:34 am

2 stops20h 54m

Portland

lun. 10/6

2:38 pm-11:25 am

1 stop15h 47m

$673

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

sáb. 9/27

12:55 pm-12:34 am

1 stop16h 39m

Portland

lun. 10/6

6:50 am-9:15 am

1 stop21h 25m

$691

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

jue. 10/30

6:35 am-11:59 pm

2 stops21h 24m

Portland

jue. 11/6

7:44 pm-11:05 am

1 stop10h 21m

$744

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

vie. 10/31

6:35 am-11:59 pm

2 stops21h 24m

Portland

vie. 11/7

3:00 pm-8:25 am

1 stop12h 25m

$746

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

mar. 10/14

9:35 am-10:19 pm

2 stops17h 44m

Portland

mar. 10/21

1:27 pm-12:15 pm

2 stops17h 48m

$789

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

mar. 10/14

9:30 am-6:23 pm

2 stops13h 53m

Portland

mar. 10/21

8:00 am-6:30 am

3 stops17h 30m

$989

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 $683, 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 January is also cheap. Prices for this month can be found on momondo for an average of $712.

What is the cheapest time of day to depart on your flight to Portland, Maine?

In the morning is the cheapest time of day to fly from London Heathrow Airport to Portland, Maine when you can find flight prices for as low as $1,150. Flying to Portland, Maine in the morning is an ideal time because this is during off-peak travel hours. Try not to purchase tickets in the afternoon because they tend to be around $1,296. Of course, these prices can vary depending on the time of year and what airport you fly to.

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

Direct flights

None
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 11h 30m.

  • 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
Bartlett
Gorham
Brunswick
Auburn
Intervale
Windham
Bath
Oxford
Georgetown
Tamworth
Falmouth

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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