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.

£284 Cheap Flights from Portland to London in 2026

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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 - 20:45

PWM

LHR

9h 45m

1 stop

08:15 - 23:36

LHR

PWM

20h 21m

1 stop

£552JetBlue

Wed, 6 May - Mon, 11 May

06:00 - 09:30

PWM

LHR

22h 30m

1 stop

11:55 - 23:36

LHR

PWM

16h 41m

1 stop

£556JetBlue

Fri, 8 May - Wed, 13 May

06:00 - 21:35

PWM

LHR

10h 35m

1 stop

08:00 - 17:44

LHR

PWM

14h 44m

1 stop

£558United Airlines

Sun, 23 Aug - Tue, 25 Aug

06:00 - 20:40

PWM

LHR

9h 40m

1 stop

14:05 - 23:31

LHR

PWM

14h 26m

2 stops

£561United Airlines

Sun, 23 Aug - Tue, 25 Aug

16:43 - 16:00

PWM

LGW

18h 17m

2 stops

10:35 - 00:43

LGW

PWM

19h 08m

2 stops

£590Delta

Mon, 20 Apr - Tue, 19 May

14:35 - 09:30

PWM

LCY

13h 55m

2 stops

08:25 - 23:59

LCY

PWM

20h 34m

2 stops

£600Delta

Sun, 6 Sep - Sat, 12 Sep

06:00 - 16:40

PWM

LGW

29h 40m

2 stops

07:05 - 22:59

LGW

PWM

20h 54m

2 stops

£601Turkish Airlines

Mon, 6 Apr - Mon, 20 Apr

06:00 - 13:10

PWM

LGW

50h 10m

2 stops

07:05 - 23:36

LGW

PWM

21h 31m

2 stops

£623Turkish Airlines

Wed, 6 May - Mon, 11 May

06:00 - 22:30

PWM

LGW

35h 30m

2 stops

07:05 - 23:36

LGW

PWM

21h 31m

2 stops

£623Multiple Airlines

Wed, 6 May - Mon, 11 May

09:52 - 10:00

PWM

LGW

19h 08m

1 stop

14:00 - 19:16

LGW

PWM

34h 16m

2 stops

£719Multiple Airlines

Fri, 8 May - Wed, 13 May

JetBlue flights from Portland, Maine to London

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

JetBlue

6 May

PWM06:00Portland

9h 45m

1 stop

LHR20:45London Heathrow

11 May

LHR08:15London Heathrow

20h 21m

1 stop

PWM23:36Portland

£552

JetBlue

13 May

PWM06:00Portland

9h 45m

1 stop

LHR20:45London Heathrow

19 May

LHR11:55London Heathrow

16h 41m

1 stop

PWM23:36Portland

£553

JetBlue

8 May

PWM06:00Portland

22h 30m

1 stop

LHR09:30London Heathrow

13 May

LHR11:55London Heathrow

16h 41m

1 stop

PWM23:36Portland

£556

Delta flights from Portland, Maine to London

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

Delta

6 Sept

PWM14:35Portland

18h 10m

2 stops

LHR13:45London Heathrow

12 Sept

LHR08:40London Heathrow

20h 19m

2 stops

PWM23:59Portland

£578

Delta

22 Apr

PWM14:51Portland

10h 29m

1 stop

LHR06:20London Heathrow

20 May

LHR11:45London Heathrow

17h 58m

2 stops

PWM00:43Portland

£582

Delta

7 Apr

PWM16:48Portland

14h 17m

2 stops

LHR12:05London Heathrow

14 Apr

LHR09:55London Heathrow

19h 51m

2 stops

PWM00:46Portland

£585

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

PortlandLondon

PWM - LHR

PWMLHR

Portland

Wed 6/5

06:00-20:45

1 stop9h 45m

London Heathrow

Mon 11/5

08:15-23:36

1 stop20h 21m

£552

PortlandLondon

PWM - LHR

PWMLHR

Portland

Fri 8/5

06:00-09:30

1 stop22h 30m

London Heathrow

Wed 13/5

11:55-23:36

1 stop16h 41m

£556

PortlandLondon

PWM - LHR

PWMLHR

Portland

Sun 23/8

06:00-21:35

1 stop10h 35m

London Heathrow

Tue 25/8

08:00-17:44

1 stop14h 44m

£558

Fastest return journey

PortlandLondon

PWM - LHR

PWMLHR

Portland

Sun 23/8

06:00-20:40

1 stop9h 40m

London Heathrow

Tue 25/8

14:05-23:31

2 stops14h 26m

£561

PortlandLondon

PWM - LGW

PWMLGW

Portland

Mon 20/4

16:43-16:00

2 stops18h 17m

London Gatwick

Tue 19/5

10:35-00:43

2 stops19h 08m

£590

PortlandLondon

PWM - LCY

PWMLCY

Portland

Sun 6/9

14:35-09:30

2 stops13h 55m

London City

Sat 12/9

08:25-23:59

2 stops20h 34m

£600

PortlandLondon

PWM - LGW

PWMLGW

Portland

Mon 6/4

06:00-16:40

2 stops29h 40m

London Gatwick

Mon 20/4

07:05-22:59

2 stops20h 54m

£601

PortlandLondon

PWM - LGW

PWMLGW

Portland

Wed 6/5

06:00-13:10

2 stops50h 10m

London Gatwick

Mon 11/5

07:05-23:36

2 stops21h 31m

£623

PortlandLondon

PWM - LGW

PWMLGW

Portland

Wed 6/5

06:00-22:30

2 stops35h 30m

London Gatwick

Mon 11/5

07:05-23:36

2 stops21h 31m

£623

PortlandLondon

PWM - LGW

PWMLGW

Portland

Fri 8/5

09:52-10:00

1 stop19h 08m

London Gatwick

Wed 13/5

14:00-19:16

2 stops34h 16m

£719

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

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

JetBlue, Delta, and TAP AIR PORTUGAL are the most popular carriers operating from Portland to London

Which airlines fly to London?

Virgin Atlantic, British Airways and Iberia 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.

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 45m
Direct flights	None

The fastest flight from Portland, Maine to London takes 9h 45m

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 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

Milton Keynes

Luton

Gatwick

Maidstone

Slough

Southend-on-Sea

Ipswich

Canterbury

Ilford

Wembley

Guildford

Chelmsford

Hayes

Dover

Folkestone

Ramsgate

Worthing

Colchester

Chichester

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 £284

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 3/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names, great deals

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JetBlue flights from Portland, Maine to London

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

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Our best Delta 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 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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Popular flights according to clicks in the last 7 days on momondo

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