Which airlines fly to London?

Virgin Atlantic, British Airways and JetBlue are the top three most popular airlines that fly to London from Portland, Maine according to our data. Virgin Atlantic is the first choice among our users, with 40% of people opting to fly with this airline when travelling to London. Keep in mind that there are 9 different airlines that fly to London on a routine basis, so you have a few additional options to choose from.

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

Delta, United Airlines, and Scandinavian Airlines are the most popular carriers operating from Portland to London

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.

£228 Cheap Flights from Portland to London in 2026

Q: What is the typical price of a round-trip flight between Portland, Maine and London?

Prices are currently low for flights on this route. Typical prices usually range from £588 to £687. The lowest price recently found on this route was £530.

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Find the cheapest flights from Portland, Maine to London

Round-trip

One-way

Cheap return flights

Enter your travel dates to find the best prices.

06:00 - 21:35

PWM

LHR

10h 35m

1 stop

17:50 - 17:44

LHR

PWM

28h 54m

2 stops

£530United Airlines

Mon, 24 Aug - Tue, 25 Aug

15:44 - 10:40

PWM

LHR

13h 56m

2 stops

17:50 - 17:44

LHR

PWM

28h 54m

2 stops

£533United Airlines

Mon, 24 Aug - Tue, 25 Aug

14:51 - 16:00

PWM

LHR

20h 09m

2 stops

07:05 - 00:43

LHR

PWM

22h 38m

2 stops

£595Scandinavian Airlines

Mon, 4 May - Mon, 11 May

06:00 - 13:10

PWM

LGW

26h 10m

2 stops

07:05 - 23:36

LGW

PWM

21h 31m

2 stops

£604Turkish Airlines

Fri, 8 May - Wed, 13 May

07:20 - 16:40

PWM

LGW

28h 20m

2 stops

17:35 - 23:03

LGW

PWM

34h 28m

2 stops

£623Turkish Airlines

Wed, 6 May - Mon, 11 May

06:00 - 09:30

PWM

LHR

22h 30m

1 stop

08:15 - 23:36

LHR

PWM

20h 21m

1 stop

£624JetBlue

Mon, 4 May - Mon, 11 May

06:00 - 09:30

PWM

LHR

22h 30m

1 stop

08:15 - 23:36

LHR

PWM

20h 21m

1 stop

£625JetBlue

Mon, 4 May - Mon, 11 May

14:51 - 21:40

PWM

LHR

25h 49m

2 stops

07:05 - 00:43

LHR

PWM

22h 38m

2 stops

£630Scandinavian Airlines

Mon, 4 May - Mon, 11 May

14:35 - 12:05

PWM

LHR

16h 30m

1 stop

09:55 - 23:59

LHR

PWM

19h 04m

2 stops

£640Delta

Sun, 23 Aug - Fri, 4 Sep

11:38 - 09:25

PWM

LGW

16h 47m

2 stops

10:25 - 23:59

LGW

PWM

18h 34m

2 stops

£707Delta

Tue, 25 Aug - Mon, 7 Sep

Turkish Airlines flights from Portland, Maine to London

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

Turkish Airlines

8 May

PWM06:00Portland

26h 10m

2 stops

LGW13:10London Gatwick

13 May

LGW07:05London Gatwick

21h 31m

2 stops

PWM23:36Portland

£604

Turkish Airlines

6 May

PWM07:20Portland

28h 20m

2 stops

LGW16:40London Gatwick

11 May

LGW17:35London Gatwick

34h 28m

2 stops

PWM23:03Portland

£623

Turkish Airlines

12 May

PWM07:20Portland

45h 35m

2 stops

LGW09:55London Gatwick

28 May

LGW07:00London Gatwick

21h 58m

2 stops

PWM23:58Portland

£628

United Airlines flights from Portland, Maine to London

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

United Airlines

24 Aug

PWM06:00Portland

10h 35m

1 stop

LHR21:35London Heathrow

25 Aug

LHR17:50London Heathrow

28h 54m

2 stops

PWM17:44Portland

£530

United Airlines

24 Aug

PWM15:44Portland

13h 56m

2 stops

LHR10:40London Heathrow

25 Aug

LHR17:50London Heathrow

28h 54m

2 stops

PWM17:44Portland

£533

United Airlines

23 Aug

PWM05:15Portland

20h 40m

1 stop

LHR06:55London Heathrow

9 Sept

LHR07:30London Heathrow

16h 24m

2 stops

PWM18:54Portland

£634

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

PortlandLondon

PWM - LHR

PWMLHR

Portland

Mon 24/8

06:00-21:35

1 stop10h 35m

London Heathrow

Tue 25/8

17:50-17:44

2 stops28h 54m

£530

PortlandLondon

PWM - LHR

PWMLHR

Portland

Mon 24/8

15:44-10:40

2 stops13h 56m

London Heathrow

Tue 25/8

17:50-17:44

2 stops28h 54m

£533

PortlandLondon

PWM - LHR

PWMLHR

Portland

Mon 4/5

14:51-16:00

2 stops20h 09m

London Heathrow

Mon 11/5

07:05-00:43

2 stops22h 38m

£595

PortlandLondon

PWM - LGW

PWMLGW

Portland

Fri 8/5

06:00-13:10

2 stops26h 10m

London Gatwick

Wed 13/5

07:05-23:36

2 stops21h 31m

£604

PortlandLondon

PWM - LGW

PWMLGW

Portland

Wed 6/5

07:20-16:40

2 stops28h 20m

London Gatwick

Mon 11/5

17:35-23:03

2 stops34h 28m

£623

PortlandLondon

PWM - LHR

PWMLHR

Portland

Mon 4/5

06:00-09:30

1 stop22h 30m

London Heathrow

Mon 11/5

08:15-23:36

1 stop20h 21m

£624

PortlandLondon

PWM - LHR

PWMLHR

Portland

Mon 4/5

06:00-09:30

1 stop22h 30m

London Heathrow

Mon 11/5

08:15-23:36

1 stop20h 21m

£625

PortlandLondon

PWM - LHR

PWMLHR

Portland

Mon 4/5

14:51-21:40

2 stops25h 49m

London Heathrow

Mon 11/5

07:05-00:43

2 stops22h 38m

£630

PortlandLondon

PWM - LHR

PWMLHR

Portland

Sun 23/8

14:35-12:05

1 stop16h 30m

London Heathrow

Fri 4/9

09:55-23:59

2 stops19h 04m

£640

Fastest return journey

PortlandLondon

PWM - LGW

PWMLGW

Portland

Tue 25/8

11:38-09:25

2 stops16h 47m

London Gatwick

Mon 7/9

10:25-23:59

2 stops18h 34m

£707

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted 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 typical price of a round-trip flight between Portland, Maine and London?

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 40m
Direct flights	None

The fastest flight from Portland, Maine to London takes 9h 40m

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

Search flight deals

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 40m 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

Milton Keynes

Luton

Gatwick

Maidstone

Slough

Southend-on-Sea

Ipswich

Wembley

Canterbury

Ilford

Guildford

Hayes

Chelmsford

Dover

Folkestone

Ramsgate

Chichester

Bedford

Worthing

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.

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Cheap flights from Portland, Maine to London from £228

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Portland, Maine to London departing on 24/8. 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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Turkish Airlines flights from Portland, Maine to London

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

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

What is the typical price of a round-trip flight between Portland, Maine and London?

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

Which airlines fly to London?

When to book flights from Portland, Maine to London

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

Direct flights

Travelling to a place near London?

Why use momondo?

An easier way to manage your London trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United Kingdom

Fly into one of these airports located in London

Airports listed have a maximum distance of 35.6 mi from London

Fly your favourite airline to London

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to London

List of cabin classes available on flights landing in London. Availability may vary depending on flight origin and airline.

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