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

Delta and JetBlue are the most popular carriers operating from London to Portland

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 65% of people opting to fly with this airline when traveling to Portland, Maine. Keep in mind that there are 12 different airlines that fly to Portland, Maine on a routine basis, so you have a few additional options to choose from.

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.

$591 Cheap Flights from London to Portland in 2025/26

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Find the cheapest flights from London to Portland

Round-trip

One-way

Cheap round-trip flights

6:30 am - 10:19 pmLHR-PWM

19h 49m2 stops

1:25 pm - 10:15 amPWM-LHR

15h 50m2 stops

$646Virgin Atlantic

Find Deal

Wed, Oct 29 - Mon, Nov 10

11:45 am - 10:10 pmLHR-PWM

14h 25m1 stop

7:02 am - 7:20 amPWM-LHR

19h 18m1 stop

$663

Find Deal

Wed, Oct 29 - Mon, Nov 10

8:40 am - 12:34 amLHR-PWM

20h 54m2 stops

2:38 pm - 11:25 amPWM-LHR

15h 47m1 stop

$673Delta

Find Deal

Sat, Sep 27 - Mon, Oct 6

12:55 pm - 12:34 amLHR-PWM

16h 39m1 stop

6:50 am - 9:15 amPWM-LHR

21h 25m1 stop

$691Delta

Find Deal

Sat, Sep 27 - Mon, Oct 6

11:45 am - 12:34 amLHR-PWM

17h 49m2 stops

2:38 pm - 10:45 amPWM-LHR

15h 07m2 stops

$694Delta

Find Deal

Sat, Sep 27 - Mon, Oct 6

8:15 am - 11:04 pmLHR-PWM

19h 49m1 stop

7:09 am - 9:30 amPWM-LHR

21h 21m1 stop

$706JetBlue

Find Deal

Sat, Oct 11 - Sat, Oct 18

6:35 am - 11:59 pmLHR-PWM

21h 24m2 stops

7:44 pm - 11:05 amPWM-LHR

10h 21m1 stop

$744United Airlines

Find Deal

Thu, Oct 30 - Thu, Nov 6

3:10 pm - 11:17 pmLHR-PWM

12h 07m1 stop

6:00 am - 8:35 pmPWM-LHR

9h 35m1 stop

$777United Airlines

Find Deal

Thu, Oct 30 - Thu, Nov 6

6:00 pm - 1:36 pmLHR-PWM

23h 36m3 stops

6:00 am - 6:30 amPWM-LHR

19h 30m3 stops

$798Air Canada

Find Deal

Wed, Oct 29 - Mon, Nov 10

8:30 am - 11:20 pmLHR-PWM

19h 50m3 stops

8:00 am - 6:30 amPWM-LHR

17h 30m3 stops

$1,501Air Canada

Find Deal

Sat, Sep 27 - Mon, Oct 6

Virgin Atlantic flights from London to Portland, Maine

Our best Virgin Atlantic deals on London 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 11

LHR10:55 amLondon Heathrow

16h 24m

2 stops

PWM10:19 pmPortland

Oct 18

PWM6:00 amPortland

19h 45m

1 stop

LHR6:45 amLondon Heathrow

$887

Find similar

Virgin Atlantic

Oct 25

LHR11:20 amLondon Heathrow

15h 59m

1 stop

PWM10:19 pmPortland

Oct 31

PWM6:00 amPortland

20h 25m

1 stop

LHR6:25 amLondon Heathrow

$957

Find similar

Delta flights from London to Portland, Maine

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

Delta

Sep 27

LHR8:40 amLondon Heathrow

20h 54m

2 stops

PWM12:34 amPortland

Oct 6

PWM2:38 pmPortland

15h 47m

1 stop

LHR11:25 amLondon Heathrow

$673

Find similar

Delta

Sep 27

LHR12:55 pmLondon Heathrow

16h 39m

1 stop

PWM12:34 amPortland

Oct 6

PWM6:50 amPortland

21h 25m

1 stop

LHR9:15 amLondon Heathrow

$691

Find similar

Delta

Sep 27

LHR11:45 amLondon Heathrow

17h 49m

2 stops

PWM12:34 amPortland

Oct 6

PWM2:38 pmPortland

15h 07m

2 stops

LHR10:45 amLondon Heathrow

$694

Find similar

Fly from

Fly to

Route

Depart

Return

Price

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Wed 10/29

6:30 am-10:19 pm

2 stops19h 49m

Portland

Mon 11/10

1:25 pm-10:15 am

2 stops15h 50m

$646

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Wed 10/29

11:45 am-10:10 pm

1 stop14h 25m

Portland

Mon 11/10

7:02 am-7:20 am

1 stop19h 18m

$663

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Sat 9/27

8:40 am-12:34 am

2 stops20h 54m

Portland

Mon 10/6

2:38 pm-11:25 am

1 stop15h 47m

$673

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Sat 9/27

12:55 pm-12:34 am

1 stop16h 39m

Portland

Mon 10/6

6:50 am-9:15 am

1 stop21h 25m

$691

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Sat 9/27

11:45 am-12:34 am

2 stops17h 49m

Portland

Mon 10/6

2:38 pm-10:45 am

2 stops15h 07m

$694

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Sat 10/11

8:15 am-11:04 pm

1 stop19h 49m

Portland

Sat 10/18

7:09 am-9:30 am

1 stop21h 21m

$706

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 10/30

6:35 am-11:59 pm

2 stops21h 24m

Portland

Thu 11/6

7:44 pm-11:05 am

1 stop10h 21m

$744

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 10/30

3:10 pm-11:17 pm

1 stop12h 07m

Portland

Thu 11/6

6:00 am-8:35 pm

1 stop9h 35m

$777

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Wed 10/29

6:00 pm-1:36 pm

3 stops23h 36m

Portland

Mon 11/10

6:00 am-6:30 am

3 stops19h 30m

$798

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Sat 9/27

8:30 am-11:20 pm

3 stops19h 50m

Portland

Mon 10/6

8:00 am-6:30 am

3 stops17h 30m

$1,501

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 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 February. Flight prices, which tend to average around $726, 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 September is also cheap. Prices for this month can be found on momondo for an average of $743.

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

Direct flights	None

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

Search flight deals

How far is London to Portland by plane?
There are 3183.1 mi between London and Portland. By plane, this route typically takes 11h 30m.
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

Gorham

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?

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.