What airlines fly to Portland, Maine?

British Airways, Delta and JetBlue are the top three most popular airlines that fly to Portland, Maine from London according to our data. British Airways is the first choice among our users, with 59% of people opting to fly with this airline when traveling to Portland, Maine. Keep in mind that there are 9 different airlines that fly to Portland, Maine on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from London to Portland?

Delta, Virgin Atlantic, and Air Canada are the most popular carriers operating from London to Portland

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

Prices for flights from London to Portland Airport were last updated today.

How old do you have to be to fly from London 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 to Portland Airport.

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

The travel and health documents you'll need for your trip to Portland Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Portland Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$545 Cheap Flights from London to Portland in 2025/26

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7:30 am - 7:13 pm

LHR

PWM

15h 43m2 stops

6:00 am - 7:10 am

PWM

LHR

21h 10m2 stops

$759United Airlines

Tue, Mar 10 - Thu, Mar 19

12:05 pm - 11:30 pm

LHR

PWM

16h 25m2 stops

3:12 pm - 9:10 am

PWM

LHR

12h 58m1 stop

$789United Airlines

Thu, Jan 22 - Mon, Jan 26

6:35 am - 6:52 pm

LHR

PWM

17h 17m2 stops

2:31 pm - 10:25 am

PWM

LHR

14h 54m2 stops

$794United Airlines

Thu, Jan 22 - Mon, Jan 26

7:30 am - 6:50 pm

LHR

PWM

16h 20m2 stops

3:12 pm - 10:50 am

PWM

LHR

14h 38m2 stops

$795United Airlines

Mon, Jan 12 - Fri, Jan 23

9:00 am - 10:58 pm

LHR

PWM

18h 58m2 stops

7:22 pm - 6:55 am

PWM

LHR

30h 33m1 stop

$810United Airlines

Mon, Apr 13 - Fri, Apr 24

4:25 pm - 10:23 am

LHR

PWM

21h 58m1 stop

10:53 am - 10:00 am

PWM

LHR

19h 07m1 stop

$811Multiple Airlines

Tue, Mar 10 - Thu, Mar 19

4:00 pm - 11:30 pm

LHR

PWM

12h 30m1 stop

4:10 pm - 11:15 am

PWM

LHR

14h 05m1 stop

$826United Airlines

Thu, Jan 22 - Mon, Jan 26

3:10 pm - 11:30 pm

LHR

PWM

13h 20m1 stop

6:00 am - 9:20 pm

PWM

LHR

10h 20m1 stop

$827United Airlines

Thu, Jan 22 - Mon, Jan 26

2:40 pm - 10:27 pm

LHR

PWM

36h 47m2 stops

2:35 pm - 10:15 am

PWM

LHR

14h 40m1 stop

$834Air France

Tue, Jan 6 - Tue, Jan 13

6:40 pm - 11:59 pm

LHR

PWM

34h 19m2 stops

2:35 pm - 4:00 pm

PWM

LHR

20h 25m2 stops

$835Scandinavian Airlines

Fri, Jan 23 - Fri, Jan 30

United Airlines flights from London to Portland, Maine

Our best United Airlines deals on London to Portland, Maine flight tickets

United Airlines

Mar 10

LHR7:30 amLondon Heathrow

15h 43m

2 stops

PWM7:13 pmPortland

Mar 19

PWM6:00 amPortland

21h 10m

2 stops

LHR7:10 amLondon Heathrow

$759

Find similar

United Airlines

Jan 22

LHR12:05 pmLondon Heathrow

16h 25m

2 stops

PWM11:30 pmPortland

Jan 26

PWM3:12 pmPortland

12h 58m

1 stop

LHR9:10 amLondon Heathrow

$789

Find similar

United Airlines

Jan 22

LHR6:35 amLondon Heathrow

17h 17m

2 stops

PWM6:52 pmPortland

Jan 26

PWM2:31 pmPortland

14h 54m

2 stops

LHR10:25 amLondon Heathrow

$794

Find similar

Delta flights from London to Portland, Maine

Our best Delta deals on London to Portland, Maine flight tickets

Delta

Jan 12

LHR8:40 amLondon Heathrow

20h 40m

2 stops

PWM12:20 amPortland

Jan 23

PWM12:20 pmPortland

18h 20m

2 stops

LHR11:40 amLondon Heathrow

$856

Find similar

Delta

Jan 14

LHR8:55 amLondon Heathrow

18h 32m

2 stops

PWM10:27 pmPortland

Jan 16

PWM2:35 pmPortland

10h 45m

1 stop

LHR6:20 amLondon Heathrow

$2,417

Find similar

Delta

Jan 14

LHR10:45 amLondon Heathrow

16h 42m

1 stop

PWM10:27 pmPortland

Jan 16

PWM2:35 pmPortland

14h 40m

1 stop

LHR10:15 amLondon Heathrow

$2,428

Find similar

Fly from

Fly to

Route

Depart

Return

Price

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Tue 3/10

7:30 am-7:13 pm

2 stops15h 43m

Portland

Thu 3/19

6:00 am-7:10 am

2 stops21h 10m

$759

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 1/22

12:05 pm-11:30 pm

2 stops16h 25m

Portland

Mon 1/26

3:12 pm-9:10 am

1 stop12h 58m

$789

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 1/22

6:35 am-6:52 pm

2 stops17h 17m

Portland

Mon 1/26

2:31 pm-10:25 am

2 stops14h 54m

$794

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Mon 1/12

7:30 am-6:50 pm

2 stops16h 20m

Portland

Fri 1/23

3:12 pm-10:50 am

2 stops14h 38m

$795

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Mon 4/13

9:00 am-10:58 pm

2 stops18h 58m

Portland

Fri 4/24

7:22 pm-6:55 am

1 stop30h 33m

$810

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Tue 3/10

4:25 pm-10:23 am

1 stop21h 58m

Portland

Thu 3/19

10:53 am-10:00 am

1 stop19h 07m

$811

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 1/22

4:00 pm-11:30 pm

1 stop12h 30m

Portland

Mon 1/26

4:10 pm-11:15 am

1 stop14h 05m

$826

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 1/22

3:10 pm-11:30 pm

1 stop13h 20m

Portland

Mon 1/26

6:00 am-9:20 pm

1 stop10h 20m

$827

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Tue 1/6

2:40 pm-10:27 pm

2 stops36h 47m

Portland

Tue 1/13

2:35 pm-10:15 am

1 stop14h 40m

$834

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Fri 1/23

6:40 pm-11:59 pm

2 stops34h 19m

Portland

Fri 1/30

2:35 pm-4:00 pm

2 stops20h 25m

$835

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 16 resultsSorted by cheapest first

How to get the cheapest flight ticket from London 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

Prices

Airlines

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

The cheapest month to fly to Portland, Maine from London is in October. Flight prices, which tend to average around $694, 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 October, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $722.

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 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 to Portland, Maine

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

Estimated round-trip price

Cheap London to Portland, Maine (LON to PWM) flight deals and tips

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

Fastest flight time	15h 43m
Direct flights	None

The fastest flight from London to Portland, Maine takes 15h 43m

There are no direct flights from London to Portland, Maine. There are no popular flight routes from London to Portland, Maine.

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How far is London to Portland by plane?
There are 3183.1 mi between London and Portland. By plane, this route typically takes 15h 43m.
When did momondo last update prices for flights from London to Portland Airport?
Prices for flights from London to Portland Airport were last updated today.
How old do you have to be to fly from London 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 to Portland Airport.
What documentation or ID do you need to fly to Portland Airport?
The travel and health documents you'll need for your trip to Portland Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Portland Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

North Conway

Boothbay Harbor

Jackson

Conway

Freeport

Lewiston

Bartlett

Brunswick

Auburn

Gorham

Windham

Intervale

Oxford

Bath

Georgetown

Falmouth

Tamworth

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from London to Portland. momondo saves you time and could save you money on your trip.

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?

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.