Which airlines fly to London?

British Airways, Virgin Atlantic and Iberia 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 44% 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.

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.

£496 Cheap Flights from Portland to London in 2025/26

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Find the cheapest flights from Portland, Maine to London

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One-way

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06:00 - 09:30PWM-LHR

22h 30m1 stop

08:15 - 23:36LHR-PWM

20h 21m1 stop

£496JetBlue

Find Deal

週五, 1 5月 - 週日, 10 5月

14:18 - 09:30PWM-LHR

14h 12m1 stop

11:55 - 23:36LHR-PWM

16h 41m1 stop

£519JetBlue

Find Deal

週四, 30 4月 - 週日, 10 5月

06:00 - 20:45PWM-LHR

9h 45m1 stop

11:55 - 23:36LHR-PWM

16h 41m1 stop

£530JetBlue

Find Deal

週六, 2 5月 - 週日, 10 5月

06:30 - 14:35PWM-LHR

27h 05m2 stops

19:50 - 23:59LHR-PWM

33h 09m2 stops

£586Scandinavian Airlines

Find Deal

週五, 1 5月 - 週日, 10 5月

14:18 - 13:10PWM-LGW

41h 52m2 stops

17:15 - 23:36LGW-PWM

35h 21m2 stops

£611Turkish Airlines

Find Deal

週五, 1 5月 - 週日, 10 5月

14:18 - 16:20PWM-LGW

21h 02m2 stops

07:00 - 23:36LGW-PWM

21h 36m2 stops

£810Turkish Airlines

Find Deal

週四, 30 4月 - 週六, 9 5月

11:16 - 10:05PWM-LGW

17h 49m1 stop

14:00 - 09:06LGW-PWM

24h 06m1 stop

£1,192Multiple Airlines

Find Deal

週六, 27 12月 - 週四, 1 1月

11:16 - 10:05PWM-LGW

17h 49m1 stop

14:10 - 09:06LGW-PWM

23h 56m1 stop

£1,232Multiple Airlines

Find Deal

週六, 27 12月 - 週日, 4 1月

12:56 - 07:15PWM-LCY

13h 19m2 stops

10:00 - 22:43LCY-PWM

17h 43m2 stops

£1,856Delta

Find Deal

週日, 28 12月 - 週四, 1 1月

14:30 - 08:50PWM-LCY

13h 20m2 stops

13:45 - 23:59LCY-PWM

15h 14m2 stops

£1,929Delta

Find Deal

週二, 25 11月 - 週日, 30 11月

JetBlue flights from Portland, Maine to London

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

JetBlue

1 May

PWM06:00Portland

22h 30m

1 stop

LHR09:30London Heathrow

10 May

LHR08:15London Heathrow

20h 21m

1 stop

PWM23:36Portland

£496

Find similar

JetBlue

30 Apr

PWM14:18Portland

14h 12m

1 stop

LHR09:30London Heathrow

10 May

LHR11:55London Heathrow

16h 41m

1 stop

PWM23:36Portland

£519

Find similar

JetBlue

2 May

PWM06:00Portland

9h 45m

1 stop

LHR20:45London Heathrow

10 May

LHR11:55London Heathrow

16h 41m

1 stop

PWM23:36Portland

£530

Find similar

Delta flights from Portland, Maine to London

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

Delta

2 May

PWM14:35Portland

24h 25m

1 stop

LHR20:00London Heathrow

11 May

LHR08:40London Heathrow

20h 19m

2 stops

PWM23:59Portland

£628

Find similar

Delta

30 Apr

PWM14:35Portland

11h 40m

1 stop

LHR07:15London Heathrow

9 May

LHR11:45London Heathrow

17h 14m

2 stops

PWM23:59Portland

£661

Find similar

Delta

1 May

PWM14:35Portland

14h 40m

1 stop

LHR10:15London Heathrow

9 May

LHR08:40London Heathrow

20h 19m

2 stops

PWM23:59Portland

£662

Find similar

Fly from

Fly to

Route

Depart

Return

Price

PortlandLondon

PWM - LHR

PWMLHR

Portland

週五 1/5

06:00-09:30

1 stop22h 30m

London Heathrow

週日 10/5

08:15-23:36

1 stop20h 21m

£496

PortlandLondon

PWM - LHR

PWMLHR

Portland

週四 30/4

14:18-09:30

1 stop14h 12m

London Heathrow

週日 10/5

11:55-23:36

1 stop16h 41m

£519

PortlandLondon

PWM - LHR

PWMLHR

Portland

週六 2/5

06:00-20:45

1 stop9h 45m

London Heathrow

週日 10/5

11:55-23:36

1 stop16h 41m

£530

PortlandLondon

PWM - LHR

PWMLHR

Portland

週五 1/5

06:30-14:35

2 stops27h 05m

London Heathrow

週日 10/5

19:50-23:59

2 stops33h 09m

£586

PortlandLondon

PWM - LGW

PWMLGW

Portland

週五 1/5

14:18-13:10

2 stops41h 52m

London Gatwick

週日 10/5

17:15-23:36

2 stops35h 21m

£611

PortlandLondon

PWM - LGW

PWMLGW

Portland

週四 30/4

14:18-16:20

2 stops21h 02m

London Gatwick

週六 9/5

07:00-23:36

2 stops21h 36m

£810

PortlandLondon

PWM - LGW

PWMLGW

Portland

週六 27/12

11:16-10:05

1 stop17h 49m

London Gatwick

週四 1/1

14:00-09:06

1 stop24h 06m

£1,192

PortlandLondon

PWM - LGW

PWMLGW

Portland

週六 27/12

11:16-10:05

1 stop17h 49m

London Gatwick

週日 4/1

14:10-09:06

1 stop23h 56m

£1,232

PortlandLondon

PWM - LCY

PWMLCY

Portland

週日 28/12

12:56-07:15

2 stops13h 19m

London City

週四 1/1

10:00-22:43

2 stops17h 43m

£1,856

PortlandLondon

PWM - LCY

PWMLCY

Portland

週二 25/11

14:30-08:50

2 stops13h 20m

London City

週日 30/11

13:45-23:59

2 stops15h 14m

£1,929

Flights are sorted by cheapest return flights first.

Sorted 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 October. Flight prices, which tend to average around £470, 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 £531.

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

The cheapest time of day to fly to London is at midday when flights can be purchased for as low as £537. Flights in the morning are often more expensive, with an average ticket price of £568.

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

Direct flights	None

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

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Luton

Gatwick

Maidstone

Slough

Canterbury

Southend-on-Sea

Ipswich

Ilford

Guildford

Dover

Colchester

Chelmsford

Hayes

Worthing

Ramsgate

Dartford

Bedford

Winchester

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.