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

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

Which airlines fly to London?

British Airways, Virgin Atlantic and JetBlue 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 43% 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 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.

£240 Cheap Flights from Portland, Maine to London in 2026

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Find the cheapest flights from Portland, Maine to London

Return

One-way

Last minute

Cheap return flights

Enter your travel dates to find the best prices.

11:07 - 10:00

PWM

LGW

17h 53m

1 stop

14:00 - 09:12

LGW

PWM

24h 12m

1 stop

£530Multiple Airlines

Wed, 5 Aug - Thu, 27 Aug

11:07 - 10:00

PWM

LGW

17h 53m

1 stop

14:00 - 10:27

LGW

PWM

25h 27m

1 stop

£539Multiple Airlines

Wed, 5 Aug - Tue, 25 Aug

11:07 - 10:00

PWM

LGW

17h 53m

1 stop

14:00 - 09:12

LGW

PWM

24h 12m

1 stop

£550Multiple Airlines

Sat, 1 Aug - Thu, 27 Aug

15:43 - 08:25

PWM

LHR

11h 42m

1 stop

06:50 - 16:09

LHR

PWM

14h 19m

2 stops

£552United Airlines

Sun, 15 Nov - Tue, 17 Nov

14:23 - 09:10

PWM

LHR

13h 47m

2 stops

06:50 - 18:21

LHR

PWM

16h 31m

2 stops

£555United Airlines

Sun, 15 Nov - Tue, 17 Nov

14:23 - 09:10

PWM

LHR

13h 47m

2 stops

06:50 - 18:21

LHR

PWM

16h 31m

2 stops

£555United Airlines

Sun, 15 Nov - Tue, 17 Nov

13:25 - 09:30

PWM

LHR

15h 05m

1 stop

11:55 - 00:25

LHR

PWM

17h 30m

1 stop

£591JetBlue

Tue, 4 Aug - Wed, 2 Sep

06:00 - 20:45

PWM

LHR

9h 45m

1 stop

11:55 - 12:30

LHR

PWM

29h 35m

1 stop

£602JetBlue

Mon, 17 Aug - Mon, 24 Aug

11:55 - 07:55

PWM

LCY

15h 00m

2 stops

09:20 - 23:49

LCY

PWM

18h 29m

2 stops

£707Delta

Wed, 21 Oct - Mon, 26 Oct

16:15 - 09:30

PWM

LCY

12h 15m

2 stops

08:25 - 00:10

LCY

PWM

20h 45m

2 stops

£777Delta

Sun, 18 Oct - Sat, 24 Oct

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JetBlue flights from Portland, Maine to London

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

JetBlue

4 Aug

PWM13:25Portland

15h 05m

1 stop

LHR09:30London Heathrow

2 Sept

LHR11:55London Heathrow

17h 30m

1 stop

PWM00:25Portland

£591

JetBlue

17 Aug

PWM06:00Portland

9h 45m

1 stop

LHR20:45London Heathrow

24 Aug

LHR11:55London Heathrow

29h 35m

1 stop

PWM12:30Portland

£602

JetBlue

21 Aug

PWM06:10Portland

9h 35m

1 stop

LHR20:45London Heathrow

28 Aug

LHR11:55London Heathrow

17h 30m

1 stop

PWM00:25Portland

£602

Scandinavian Airlines flights from Portland, Maine to London

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

Scandinavian Airlines

22 Aug

PWM06:00Portland

22h 35m

2 stops

LHR09:35London Heathrow

26 Aug

LHR15:35London Heathrow

38h 24m

2 stops

PWM00:59Portland

£644

Scandinavian Airlines

10 Jul

PWM14:59Portland

20h 26m

3 stops

LHR16:25London Heathrow

12 Jul

LHR10:20London Heathrow

19h 39m

2 stops

PWM00:59Portland

£1,467

Scandinavian Airlines

10 Jul

PWM06:00Portland

22h 20m

3 stops

LHR09:20London Heathrow

12 Jul

LHR06:40London Heathrow

23h 19m

3 stops

PWM00:59Portland

£1,577

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

PortlandLondon

PWM - LGW

PWMLGW

Portland

Wed 5/8

11:07-10:00

1 stop17h 53m

London Gatwick

Thu 27/8

14:00-09:12

1 stop24h 12m

£530

PortlandLondon

PWM - LGW

PWMLGW

Portland

Wed 5/8

11:07-10:00

1 stop17h 53m

London Gatwick

Tue 25/8

14:00-10:27

1 stop25h 27m

£539

PortlandLondon

PWM - LGW

PWMLGW

Portland

Sat 1/8

11:07-10:00

1 stop17h 53m

London Gatwick

Thu 27/8

14:00-09:12

1 stop24h 12m

£550

Fastest return journey

PortlandLondon

PWM - LHR

PWMLHR

Portland

Sun 15/11

15:43-08:25

1 stop11h 42m

London Heathrow

Tue 17/11

06:50-16:09

2 stops14h 19m

£552

PortlandLondon

PWM - LHR

PWMLHR

Portland

Sun 15/11

14:23-09:10

2 stops13h 47m

London Heathrow

Tue 17/11

06:50-18:21

2 stops16h 31m

£555

PortlandLondon

PWM - LHR

PWMLHR

Portland

Sun 15/11

14:23-09:10

2 stops13h 47m

London Heathrow

Tue 17/11

06:50-18:21

2 stops16h 31m

£555

PortlandLondon

PWM - LHR

PWMLHR

Portland

Tue 4/8

13:25-09:30

1 stop15h 05m

London Heathrow

Wed 2/9

11:55-00:25

1 stop17h 30m

£591

PortlandLondon

PWM - LHR

PWMLHR

Portland

Mon 17/8

06:00-20:45

1 stop9h 45m

London Heathrow

Mon 24/8

11:55-12:30

1 stop29h 35m

£602

PortlandLondon

PWM - LCY

PWMLCY

Portland

Wed 21/10

11:55-07:55

2 stops15h 00m

London City

Mon 26/10

09:20-23:49

2 stops18h 29m

£707

PortlandLondon

PWM - LCY

PWMLCY

Portland

Sun 18/10

16:15-09:30

2 stops12h 15m

London City

Sat 24/10

08:25-00:10

2 stops20h 45m

£777

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 cheapest month to fly to London?

The cheapest month to fly to London from Portland, Maine is in January. Flight prices, which tend to average around £0, are often lower during this time because this is during the off-season. The month of September is another great option to travel to London, with average flight prices from Portland, Maine averaging around £430.

Can stopping save me money on Portland, Maine to London flights?

You could potentially save up to 26% on your flight if you consider stops on a Portland, Maine to London flight.

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	10h 32m
Direct flights	None

The fastest flight from Portland, Maine to London takes 10h 32m

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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Frequently asked questions about flying from Portland, Maine to London

How far is Portland to London by plane?
A flight from Portland to London will travel around 3183.1 mi. Typically, this will take 10h 32m 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

Wembley

Gatwick

Milton Keynes

Luton

Southend-on-Sea

Slough

Maidstone

Ipswich

Ilford

Folkestone

Canterbury

Guildford

Hayes

Hastings

Chichester

Bedford

Colchester

Harlow

Chelmsford

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 £240

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 23/7. 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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JetBlue flights from Portland, Maine to London

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

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Our best Scandinavian 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 cheapest month to fly to London?

Can stopping save me money on Portland, Maine to London flights?

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

Frequently asked questions about flying from Portland, Maine to London

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

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

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