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

JetBlue, United Airlines, and Delta 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 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.

£208 Cheap Flights from Portland to London in 2026

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Find the cheapest flights from Portland, Maine to London

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One-way

Last minute

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06:00 - 20:45

PWM

LHR

9h 45m

1 stop

08:15 - 23:36

LHR

PWM

20h 21m

1 stop

£501JetBlue

Wed, 6 May - Mon, 11 May

06:00 - 20:45

PWM

LHR

9h 45m

1 stop

08:15 - 23:36

LHR

PWM

20h 21m

1 stop

£504JetBlue

Wed, 6 May - Mon, 11 May

06:30 - 09:35

PWM

LHR

22h 05m

2 stops

07:05 - 00:43

LHR

PWM

22h 38m

2 stops

£514Scandinavian Airlines

Wed, 6 May - Mon, 11 May

06:00 - 20:45

PWM

LHR

9h 45m

1 stop

11:55 - 23:36

LHR

PWM

16h 41m

1 stop

£515JetBlue

Sun, 3 May - Wed, 6 May

06:30 - 09:35

PWM

LHR

22h 05m

2 stops

07:05 - 00:43

LHR

PWM

22h 38m

3 stops

£533Scandinavian Airlines

Wed, 6 May - Mon, 11 May

14:51 - 09:25

PWM

LGW

13h 34m

2 stops

10:25 - 00:43

LGW

PWM

19h 18m

2 stops

£590Delta

Wed, 6 May - Mon, 11 May

11:29 - 10:00

PWM

LGW

17h 31m

2 stops

14:00 - 09:07

LGW

PWM

24h 07m

1 stop

£604Multiple Airlines

Fri, 3 Apr - Thu, 9 Apr

09:47 - 10:00

PWM

LGW

19h 13m

1 stop

14:00 - 09:07

LGW

PWM

24h 07m

1 stop

£610Multiple Airlines

Fri, 3 Apr - Thu, 9 Apr

12:51 - 07:55

PWM

LCY

14h 04m

2 stops

10:00 - 00:46

LCY

PWM

19h 46m

2 stops

£621Delta

Wed, 1 Apr - Wed, 15 Apr

07:28 - 16:40

PWM

LGW

28h 12m

2 stops

07:00 - 23:36

LGW

PWM

21h 36m

2 stops

£647Turkish Airlines

Wed, 29 Apr - Sun, 3 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

£501

JetBlue

6 May

PWM06:00Portland

9h 45m

1 stop

LHR20:45London Heathrow

11 May

LHR08:15London Heathrow

20h 21m

1 stop

PWM23:36Portland

£504

JetBlue

3 May

PWM06:00Portland

9h 45m

1 stop

LHR20:45London Heathrow

6 May

LHR11:55London Heathrow

16h 41m

1 stop

PWM23:36Portland

£515

United Airlines flights from Portland, Maine to London

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

United Airlines

1 Apr

PWM16:28Portland

14h 17m

1 stop

LHR11:45London Heathrow

16 Apr

LHR06:55London Heathrow

19h 45m

2 stops

PWM21:40Portland

£538

United Airlines

1 Apr

PWM06:00Portland

19h 55m

2 stops

LHR06:55London Heathrow

16 Apr

LHR06:55London Heathrow

19h 45m

2 stops

PWM21:40Portland

£541

United Airlines

6 May

PWM06:00Portland

10h 35m

1 stop

LHR21:35London Heathrow

11 May

LHR06:50London Heathrow

16h 33m

2 stops

PWM18:23Portland

£574

Fly from

Fly to

Route

Depart

Return

Price

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

£501

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

£504

PortlandLondon

PWM - LHR

PWMLHR

Portland

Wed 6/5

06:30-09:35

2 stops22h 05m

London Heathrow

Mon 11/5

07:05-00:43

2 stops22h 38m

£514

PortlandLondon

PWM - LHR

PWMLHR

Portland

Sun 3/5

06:00-20:45

1 stop9h 45m

London Heathrow

Wed 6/5

11:55-23:36

1 stop16h 41m

£515

PortlandLondon

PWM - LHR

PWMLHR

Portland

Wed 6/5

06:30-09:35

2 stops22h 05m

London Heathrow

Mon 11/5

07:05-00:43

3 stops22h 38m

£533

PortlandLondon

PWM - LGW

PWMLGW

Portland

Wed 6/5

14:51-09:25

2 stops13h 34m

London Gatwick

Mon 11/5

10:25-00:43

2 stops19h 18m

£590

PortlandLondon

PWM - LGW

PWMLGW

Portland

Fri 3/4

11:29-10:00

2 stops17h 31m

London Gatwick

Thu 9/4

14:00-09:07

1 stop24h 07m

£604

PortlandLondon

PWM - LGW

PWMLGW

Portland

Fri 3/4

09:47-10:00

1 stop19h 13m

London Gatwick

Thu 9/4

14:00-09:07

1 stop24h 07m

£610

PortlandLondon

PWM - LCY

PWMLCY

Portland

Wed 1/4

12:51-07:55

2 stops14h 04m

London City

Wed 15/4

10:00-00:46

2 stops19h 46m

£621

PortlandLondon

PWM - LGW

PWMLGW

Portland

Wed 29/4

07:28-16:40

2 stops28h 12m

London Gatwick

Sun 3/5

07:00-23:36

2 stops21h 36m

£647

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 day to depart on your flight to London?

Our data shows that Tuesday is the least expensive day to fly to London. Tickets to fly out on this day can be as low as £426. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from Portland, Maine to London for around £551.

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

The cheapest time of day to fly to London is in the afternoon when flights can be purchased for as low as £438. Flights in the morning are often more expensive, with an average ticket price of £538.

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.

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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

Milton Keynes

Luton

Gatwick

Maidstone

Slough

Southend-on-Sea

Canterbury

Ipswich

Ilford

Wembley

Guildford

Chelmsford

Hayes

Dover

Folkestone

Worthing

Colchester

Bedford

Ramsgate

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 £208

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 13/8. 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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JetBlue flights from Portland, Maine to London

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

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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 cheapest day to depart on your flight to London?

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

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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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