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 45% 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.

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

Delta, JetBlue, and United 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.

£247 Cheap Flights from Portland, Maine to London in 2026

Find the cheapest flights from Portland, Maine to London

Return

One-way

Cheap return flights

Enter your travel dates to find the best prices.

08:45 - 08:25

PWM

LHR

18h 40m

1 stop

06:50 - 23:21

LHR

PWM

21h 31m

2 stops

£555United Airlines

Mon, 9 Nov - Wed, 11 Nov

15:10 - 10:05

PWM

LHR

13h 55m

2 stops

09:10 - 21:51

LHR

PWM

17h 41m

2 stops

£575United Airlines

Mon, 9 Nov - Wed, 11 Nov

06:00 - 20:45

PWM

LHR

9h 45m

1 stop

08:15 - 00:10

LHR

PWM

20h 55m

1 stop

£596JetBlue

Sun, 6 Sep - Tue, 8 Sep

06:00 - 20:45

PWM

LHR

9h 45m

1 stop

08:15 - 23:54

LHR

PWM

20h 39m

1 stop

£604JetBlue

Wed, 23 Sep - Wed, 30 Sep

06:00 - 20:45

PWM

LHR

9h 45m

1 stop

11:55 - 00:25

LHR

PWM

17h 30m

1 stop

£621JetBlue

Thu, 13 Aug - Thu, 27 Aug

06:00 - 20:45

PWM

LHR

9h 45m

1 stop

08:15 - 12:30

LHR

PWM

33h 15m

1 stop

£625JetBlue

Mon, 24 Aug - Mon, 31 Aug

16:20 - 08:50

PWM

LHR

11h 30m

1 stop

11:55 - 23:54

LHR

PWM

16h 59m

1 stop

£626Multiple Airlines

Fri, 11 Sep - Fri, 18 Sep

06:00 - 20:45

PWM

LHR

9h 45m

1 stop

08:15 - 23:54

LHR

PWM

20h 39m

1 stop

£630JetBlue

Fri, 25 Sep - Mon, 28 Sep

06:40 - 20:45

PWM

LHR

9h 05m

1 stop

08:15 - 23:54

LHR

PWM

20h 39m

1 stop

£633JetBlue

Sat, 5 Sep - Sat, 12 Sep

06:00 - 20:45

PWM

LHR

9h 45m

1 stop

08:15 - 00:25

LHR

PWM

21h 10m

1 stop

£643JetBlue

Fri, 28 Aug - Sun, 30 Aug

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JetBlue flights from Portland, Maine to London

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

JetBlue

6 Sept

PWM06:00Portland

9h 45m

1 stop

LHR20:45London Heathrow

8 Sept

LHR08:15London Heathrow

20h 55m

1 stop

PWM00:10Portland

£596

JetBlue

23 Sept

PWM06:00Portland

9h 45m

1 stop

LHR20:45London Heathrow

30 Sept

LHR08:15London Heathrow

20h 39m

1 stop

PWM23:54Portland

£604

JetBlue

13 Aug

PWM06:00Portland

9h 45m

1 stop

LHR20:45London Heathrow

27 Aug

LHR11:55London Heathrow

17h 30m

1 stop

PWM00:25Portland

£621

Virgin Atlantic flights from Portland, Maine to London

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

Virgin Atlantic

3 Nov

PWM06:01Portland

20h 49m

1 stop

LHR07:50London Heathrow

12 Nov

LHR08:40London Heathrow

19h 53m

2 stops

PWM23:33Portland

£649

Virgin Atlantic

3 Nov

PWM06:01Portland

20h 54m

2 stops

LHR07:55London Heathrow

12 Nov

LHR08:40London Heathrow

19h 53m

2 stops

PWM23:33Portland

£652

Virgin Atlantic

3 Nov

PWM06:01Portland

19h 24m

1 stop

LHR06:25London Heathrow

12 Nov

LHR10:50London Heathrow

17h 43m

1 stop

PWM23:33Portland

£671

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

PortlandLondon

PWM - LHR

PWMLHR

Portland

Mon 9/11

08:45-08:25

1 stop18h 40m

London Heathrow

Wed 11/11

06:50-23:21

2 stops21h 31m

£555

PortlandLondon

PWM - LHR

PWMLHR

Portland

Mon 9/11

15:10-10:05

2 stops13h 55m

London Heathrow

Wed 11/11

09:10-21:51

2 stops17h 41m

£575

PortlandLondon

PWM - LHR

PWMLHR

Portland

Sun 6/9

06:00-20:45

1 stop9h 45m

London Heathrow

Tue 8/9

08:15-00:10

1 stop20h 55m

£596

PortlandLondon

PWM - LHR

PWMLHR

Portland

Wed 23/9

06:00-20:45

1 stop9h 45m

London Heathrow

Wed 30/9

08:15-23:54

1 stop20h 39m

£604

Fastest return journey

PortlandLondon

PWM - LHR

PWMLHR

Portland

Thu 13/8

06:00-20:45

1 stop9h 45m

London Heathrow

Thu 27/8

11:55-00:25

1 stop17h 30m

£621

PortlandLondon

PWM - LHR

PWMLHR

Portland

Mon 24/8

06:00-20:45

1 stop9h 45m

London Heathrow

Mon 31/8

08:15-12:30

1 stop33h 15m

£625

PortlandLondon

PWM - LHR

PWMLHR

Portland

Fri 11/9

16:20-08:50

1 stop11h 30m

London Heathrow

Fri 18/9

11:55-23:54

1 stop16h 59m

£626

PortlandLondon

PWM - LHR

PWMLHR

Portland

Fri 25/9

06:00-20:45

1 stop9h 45m

London Heathrow

Mon 28/9

08:15-23:54

1 stop20h 39m

£630

PortlandLondon

PWM - LHR

PWMLHR

Portland

Sat 5/9

06:40-20:45

1 stop9h 05m

London Heathrow

Sat 12/9

08:15-23:54

1 stop20h 39m

£633

PortlandLondon

PWM - LHR

PWMLHR

Portland

Fri 28/8

06:00-20:45

1 stop9h 45m

London Heathrow

Sun 30/8

08:15-00:25

1 stop21h 10m

£643

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?

Prices are currently typical for flights on this route.

Typical prices usually range from £538 to £652.
The lowest price recently found on this route was £555.

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 December is another great option to travel to London, with average flight prices from Portland, Maine averaging around £526.

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	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

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 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.

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Luton

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Slough

Ipswich

Maidstone

Folkestone

Ilford

Hastings

Canterbury

Guildford

Chichester

Bedford

Hayes

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.

An easier way to manage your London trip

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Cheap flights from Portland, Maine to London from £247

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 5/8. 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

Virgin Atlantic flights from Portland, Maine to London

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

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See travel insights to London from

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 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

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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