Which airlines fly to London?

British Airways, Virgin Atlantic and Iberia are the top three most popular airlines that fly to London from Portland, Maine according to our data. British Airways is the first choice among our users, with 42% of people opting to fly with this airline when travelling to London. Keep in mind that there are 8 different airlines that fly to London on a routine basis, so you have a few additional options to choose from.

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

Prices for flights from Portland Airport to London refresh daily.

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

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Portland Airport to London.

What documentation or ID do you need to fly to London?

The necessary travel and health documents for your London trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

£454 Cheap Flights from Portland to London in 2025/26

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Find the cheapest flights from Portland, Maine to London

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05:31 - 07:50PWM-LHR

21h 19m1 stop

06:20 - 23:06LHR-PWM

21h 46m2 stops

£454Virgin Atlantic

Find Deal

Tue, 24 Feb - Tue, 3 Mar

14:35 - 14:35PWM-LHR

19h 00m3 stops

06:40 - 00:18LHR-PWM

22h 38m2 stops

£457Scandinavian Airlines

Find Deal

Tue, 24 Feb - Tue, 3 Mar

05:31 - 06:25PWM-LHR

19h 54m1 stop

12:30 - 23:06LHR-PWM

15h 36m1 stop

£459Virgin Atlantic

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Tue, 24 Feb - Tue, 3 Mar

12:20 - 08:45PWM-LHR

15h 25m1 stop

08:55 - 00:20LHR-PWM

20h 25m2 stops

£472Delta

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Fri, 23 Jan - Tue, 27 Jan

14:35 - 08:05PWM-LHR

12h 30m1 stop

08:40 - 22:27LHR-PWM

18h 47m2 stops

£476Delta

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Fri, 23 Jan - Tue, 27 Jan

18:28 - 13:25PWM-LHR

13h 57m2 stops

07:50 - 18:03LHR-PWM

15h 13m2 stops

£479American Airlines

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Tue, 24 Feb - Wed, 4 Mar

06:17 - 09:30PWM-LCY

22h 13m2 stops

07:45 - 00:20LCY-PWM

21h 35m2 stops

£544KLM

Find Deal

Fri, 23 Jan - Tue, 27 Jan

09:47 - 10:00PWM-LGW

19h 13m1 stop

13:00 - 10:49LGW-PWM

50h 49m2 stops

£693Multiple Airlines

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Fri, 16 Jan - Wed, 21 Jan

15:30 - 10:55PWM-LGW

14h 25m2 stops

11:55 - 22:45LGW-PWM

15h 50m2 stops

£771Multiple Airlines

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Thu, 8 Jan - Thu, 15 Jan

05:39 - 07:30PWM-LGW

20h 51m2 stops

11:20 - 12:11LGW-PWM

29h 51m2 stops

£1,102American Airlines

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Sun, 21 Dec - Sun, 28 Dec

Virgin Atlantic flights from Portland, Maine to London

Our best Virgin Atlantic deals on Portland, Maine to London flight tickets

Virgin Atlantic

24 Feb

PWM05:31Portland

21h 19m

1 stop

LHR07:50London Heathrow

3 Mar

LHR06:20London Heathrow

21h 46m

2 stops

PWM23:06Portland

£454

Find similar

Virgin Atlantic

24 Feb

PWM05:31Portland

19h 54m

1 stop

LHR06:25London Heathrow

3 Mar

LHR12:30London Heathrow

15h 36m

1 stop

PWM23:06Portland

£459

Find similar

Scandinavian Airlines flights from Portland, Maine to London

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

Scandinavian Airlines

24 Feb

PWM14:35Portland

19h 00m

3 stops

LHR14:35London Heathrow

3 Mar

LHR06:40London Heathrow

22h 38m

2 stops

PWM00:18Portland

£457

Find similar

Scandinavian Airlines

24 Feb

PWM14:35Portland

20h 50m

3 stops

LHR16:25London Heathrow

3 Mar

LHR06:40London Heathrow

22h 38m

3 stops

PWM00:18Portland

£463

Find similar

Scandinavian Airlines

7 May

PWM06:30Portland

28h 55m

2 stops

LHR16:25London Heathrow

12 May

LHR07:05London Heathrow

21h 54m

2 stops

PWM23:59Portland

£465

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Fly from

Fly to

Route

Depart

Return

Price

PortlandLondon

PWM - LHR

PWMLHR

Portland

Tue 24/2

05:31-07:50

1 stop21h 19m

London Heathrow

Tue 3/3

06:20-23:06

2 stops21h 46m

£454

PortlandLondon

PWM - LHR

PWMLHR

Portland

Tue 24/2

14:35-14:35

3 stops19h 00m

London Heathrow

Tue 3/3

06:40-00:18

2 stops22h 38m

£457

PortlandLondon

PWM - LHR

PWMLHR

Portland

Tue 24/2

05:31-06:25

1 stop19h 54m

London Heathrow

Tue 3/3

12:30-23:06

1 stop15h 36m

£459

PortlandLondon

PWM - LHR

PWMLHR

Portland

Fri 23/1

12:20-08:45

1 stop15h 25m

London Heathrow

Tue 27/1

08:55-00:20

2 stops20h 25m

£472

PortlandLondon

PWM - LHR

PWMLHR

Portland

Fri 23/1

14:35-08:05

1 stop12h 30m

London Heathrow

Tue 27/1

08:40-22:27

2 stops18h 47m

£476

PortlandLondon

PWM - LHR

PWMLHR

Portland

Tue 24/2

18:28-13:25

2 stops13h 57m

London Heathrow

Wed 4/3

07:50-18:03

2 stops15h 13m

£479

PortlandLondon

PWM - LCY

PWMLCY

Portland

Fri 23/1

06:17-09:30

2 stops22h 13m

London City

Tue 27/1

07:45-00:20

2 stops21h 35m

£544

PortlandLondon

PWM - LGW

PWMLGW

Portland

Fri 16/1

09:47-10:00

1 stop19h 13m

London Gatwick

Wed 21/1

13:00-10:49

2 stops50h 49m

£693

PortlandLondon

PWM - LGW

PWMLGW

Portland

Thu 8/1

15:30-10:55

2 stops14h 25m

London Gatwick

Thu 15/1

11:55-22:45

2 stops15h 50m

£771

PortlandLondon

PWM - LGW

PWMLGW

Portland

Sun 21/12

05:39-07:30

2 stops20h 51m

London Gatwick

Sun 28/12

11:20-12:11

2 stops29h 51m

£1,102

Flights are sorted by cheapest return flights first.

Sorted by cheapest first

How to get the cheapest flight ticket from Portland, Maine to London

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 London?

The cheapest month to fly to London from Portland, Maine is in October. Flight prices, which tend to average around £471, are often lower during this time because this is during the off-season. The month of December is another great option to travel to London, with average flight prices from Portland, Maine averaging around £532.

What is the cheapest time of day to depart on your flight to London?

The cheapest time of day to fly to London is at midday when flights can be purchased for as low as £538. Flights in the morning are often more expensive, with an average ticket price of £569.

When to book flights from Portland, Maine to London

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

Estimated return price

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

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

Fastest flight time	9h 35m
Direct flights	None

The fastest flight from Portland, Maine to London takes 9h 35m

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

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How far is Portland to London by plane?
A flight from Portland to London will travel around 3183.1 mi. Typically, this will take 9h 45m by plane in normal conditions.
When did momondo last update prices for flights from Portland Airport to London?
Prices for flights from Portland Airport to London refresh daily.
How old do you have to be to fly from Portland Airport to London?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Portland Airport to London.
What documentation or ID do you need to fly to London?
The necessary travel and health documents for your London trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Eastbourne

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Luton

Gatwick

Maidstone

Slough

Canterbury

Southend-on-Sea

Ipswich

Ilford

Guildford

Dover

Colchester

Chelmsford

Hayes

Worthing

Ramsgate

Dartford

Bedford

Winchester

Why use momondo?

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

It is quick and easy to find Portland to London flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to London that suits you.

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

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

How can momondo help me find flights from Portland to London?

momondo helps you find the best flight between Portland and London by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Portland to London right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Portland to London flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.