Which stopover airport has the shortest connection time from London to Portland, Maine?

Newark (EWR) has the shortest average stopover time for this route: 1h 22m.

Which airlines fly to Portland, Maine?

British Airways, Virgin Atlantic and KLM are the top three most popular airlines that fly to Portland, Maine from London according to our data. British Airways is the first choice among our users, with 42% of people opting to fly with this airline when travelling to Portland, Maine. Keep in mind that there are 17 different airlines that fly to Portland, Maine on a routine basis, so you have a few additional options to choose from.

Which airport is the most popular for stopovers for flights between London and Portland, Maine?

Philadelphia (PHL) was the most common stop: 33% of momondo users choosing one-stop flights on this route connected there.

Which stopover airport offers the lowest fares from London to Portland, Maine?

Flights via Newark (EWR) offer the lowest average return price of £578.

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

Delta is the most popular carrier operating from London to Portland

Which stopover airport has the shortest travel time from London to Portland, Maine?

Flights connecting via Newark (EWR) have the shortest average one-way travel time: 11h 23m.

What is the best way to get in and out of airports in London and Portland?

Practically, only Heathrow and Gatwick offer flights from London to Portland, mostly via New York. London’s four other airports – Stansted (STN), Luton (LTN), City (LCY) and Southend (SEN) – are thus not relevant to this discussion, unless your aim is to take a low-cost flight from one of these airports to another part of Europe and then do the long-haul flight to New York, Boston, Washington or Philadelphia, connecting to Portland from there. For this reason, this article is limited to Heathrow and Gatwick. Heathrow is London’s main airport and is very well connected as regards road and rail. The London Orbital motorway, the M25, intersects with the M4 at a systems interchange right near the airport, making Heathrow instantly accessible to all of London and the South-East. Heathrow’s Piccadilly Line connection to the city on the London Underground, together with the speedy Heathrow Express, make this airport a friendly choice in terms of connectivity. Gatwick also enjoys good road and rail connections to central London. Portland’s only major airport, the Portland International Jetport (PWM), offers good road connections on the I-95 and I-295 interstate freeways, as well as a bus connection to the city. Which cities can you get to from Portland International Jetport? Portland’s airport gives you access to the whole north-eastern part of the United States and New England, as well as Canada. Just southwest of Portland, you can visit Oregon Coast Aquarium, try Local Ocean Seafoods and visit Newport (Oregon). How about hiring a car and taking in all the sites of this part of the world?

Which airlines fly direct from London to Portland, Maine?

There are neither direct nor non-stop flights from London to Portland, owing to the fact that the US East Coast is already so well connected to the UK, and Portland is a small city. Flights from London to Portland, therefore, will take in at least one stop, maybe even two or three. A good option to consider for London to Portland flights is to stop in the New York area and then connect to Portland from there. British Airways, Delta and American Airlines all offer service from London Heathrow (LHR) to John F Kennedy International Airport in New York (JFK), while United flies from Heathrow to Newark Liberty International Airport in Newark (EWR), which is also a New York area airport. Delta Connection offers flights to Portland from New York JFK and also from New York La Guardia (LGA), though this would mean a land transfer from JFK to La Guardia. Even if you’re looking for cheap flights from London to Portland, or one-way flights from London to Portland, it is advisable to transfer out of the same airport you flew into, making the JFK-LGA ground connection unnecessary. You could also connect on American Airlines from Heathrow to Philadelphia and then onto Portland, as American Airlines flies from London to Philly and then also to Portland. The advantage of this is that you can book all your flights with a single airline. JetBlue offers flights from London Gatwick (LGW) to JFK, but their connection onto Portland is seasonal, so you would need to check with the airline before you finalise your booking. Most flights from London’s other airports only connect to Europe, not the United States.

What are the benefits of the different airports in London and Portland?

Heathrow is beneficial if you’re looking for the greatest selection of Atlantic crossings and also for its great road and rail connectivity, but remember this is a big and busy international airport, so expect huge crowds of people and lots of queues. Heathrow is to the west of London, so if you’re coming from Wales or the west of England, it may be a good choice. Gatwick is to the south of London, if you’re coming up from the coast or you’re in the southern part of Greater London. Southend is off to the east. Stansted and Luton are both to the north of the British capital, so if you’re coming from northern England or Scotland, then those airports may suit your needs best. London City Airport is located at Canary Wharf, which is the closest airport to the old city and also the financial hub of London, if you’re a businessman in a hurry to find flights from London to Portland.

When did momondo last update prices for flights from London to Portland Airport?

Prices for flights from London to Portland Airport were last updated today.

How many operators does momondo search for flights from London to Portland Airport?

As of October 2025, there are 6 operators available to choose from for flights from London to Portland Airport.

How old do you have to be to fly from London to Portland Airport?

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 London to Portland Airport.

What documentation or ID do you need to fly to Portland Airport?

The necessary travel and health documents for your Portland Airport 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.

£456 Cheap Flights from London to Portland in 2025/26

Q: What is the typical price of a round-trip flight between London and Portland, Maine?

Prices are currently typical for flights on this route. Typical prices usually range from £554 to £718. The lowest price recently found on this route was £654.

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10:45 - 22:23LHR-PWM

16h 38m1 stop

06:08 - 06:45PWM-LHR

19h 37m2 stops

£654Virgin Atlantic

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Thu, 11 Dec - Thu, 18 Dec

11:45 - 23:59LHR-PWM

17h 14m2 stops

06:08 - 06:45PWM-LHR

19h 37m2 stops

£660Multiple Airlines

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Thu, 11 Dec - Thu, 18 Dec

08:40 - 23:59LHR-PWM

20h 19m2 stops

14:34 - 10:30PWM-LHR

14h 56m2 stops

£695Delta

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Thu, 11 Dec - Thu, 18 Dec

16:10 - 23:59LHR-PWM

12h 49m1 stop

14:34 - 10:30PWM-LHR

14h 56m2 stops

£708Delta

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Thu, 11 Dec - Thu, 18 Dec

07:50 - 18:15LHR-PWM

15h 25m2 stops

12:37 - 08:05PWM-LHR

14h 28m2 stops

£759American Airlines

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Thu, 11 Dec - Thu, 18 Dec

10:15 - 22:52LHR-PWM

17h 37m1 stop

12:37 - 08:05PWM-LHR

14h 28m2 stops

£772American Airlines

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Thu, 11 Dec - Thu, 18 Dec

09:10 - 18:13LHR-PWM

13h 03m1 stop

11:17 - 05:55PWM-LHR

13h 38m1 stop

£883Austrian Airlines

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Sat, 28 Mar - Tue, 31 Mar

09:10 - 18:13LHR-PWM

13h 03m1 stop

11:17 - 05:55PWM-LHR

13h 38m1 stop

£884Austrian Airlines

Find Deal

Sat, 28 Mar - Tue, 31 Mar

10:25 - 23:11LHR-PWM

16h 46m2 stops

15:15 - 09:20PWM-LHR

13h 05m1 stop

£884United Airlines

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Sat, 28 Mar - Tue, 31 Mar

07:30 - 21:17LHR-PWM

18h 47m2 stops

06:00 - 21:20PWM-LHR

10h 20m1 stop

£1,130United Airlines

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Fri, 12 Dec - Fri, 19 Dec

Delta flights from London to Portland, Maine

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

Delta

11 Dec

LHR08:40London Heathrow

20h 19m

2 stops

PWM23:59Portland

18 Dec

PWM14:34Portland

14h 56m

2 stops

LHR10:30London Heathrow

£695

Find similar

Delta

11 Dec

LHR16:10London Heathrow

12h 49m

1 stop

PWM23:59Portland

18 Dec

PWM14:34Portland

14h 56m

2 stops

LHR10:30London Heathrow

£708

Find similar

Delta

11 Dec

LHR10:45London Heathrow

16h 38m

1 stop

PWM22:23Portland

18 Dec

PWM14:34Portland

13h 46m

1 stop

LHR09:20London Heathrow

£823

Find similar

Austrian Airlines flights from London to Portland, Maine

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

Austrian Airlines

28 Mar

LHR09:10London Heathrow

13h 03m

1 stop

PWM18:13Portland

31 Mar

PWM11:17Portland

13h 38m

1 stop

LHR05:55London Heathrow

£883

Find similar

Austrian Airlines

28 Mar

LHR09:10London Heathrow

13h 03m

1 stop

PWM18:13Portland

31 Mar

PWM11:17Portland

13h 38m

1 stop

LHR05:55London Heathrow

£884

Find similar

Fly from

Fly to

Route

Depart

Return

Price

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 11/12

10:45-22:23

1 stop16h 38m

Portland

Thu 18/12

06:08-06:45

2 stops19h 37m

£654

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 11/12

11:45-23:59

2 stops17h 14m

Portland

Thu 18/12

06:08-06:45

2 stops19h 37m

£660

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 11/12

08:40-23:59

2 stops20h 19m

Portland

Thu 18/12

14:34-10:30

2 stops14h 56m

£695

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 11/12

16:10-23:59

1 stop12h 49m

Portland

Thu 18/12

14:34-10:30

2 stops14h 56m

£708

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 11/12

07:50-18:15

2 stops15h 25m

Portland

Thu 18/12

12:37-08:05

2 stops14h 28m

£759

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Thu 11/12

10:15-22:52

1 stop17h 37m

Portland

Thu 18/12

12:37-08:05

2 stops14h 28m

£772

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Sat 28/3

09:10-18:13

1 stop13h 03m

Portland

Tue 31/3

11:17-05:55

1 stop13h 38m

£883

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Sat 28/3

09:10-18:13

1 stop13h 03m

Portland

Tue 31/3

11:17-05:55

1 stop13h 38m

£884

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Sat 28/3

10:25-23:11

2 stops16h 46m

Portland

Tue 31/3

15:15-09:20

1 stop13h 05m

£884

LondonPortland

LHR - PWM

LHRPWM

London Heathrow

Fri 12/12

07:30-21:17

2 stops18h 47m

Portland

Fri 19/12

06:00-21:20

1 stop10h 20m

£1,130

Flights are sorted by cheapest return flights first.

Showing 1-10 of 15 resultsSorted by cheapest first

How to get the cheapest flight ticket from London to Portland, Maine

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

Stopovers

What is the typical price of a round-trip flight between London and Portland, Maine?

What is the cheapest month to fly to Portland, Maine?

The cheapest month to fly to Portland, Maine from London is in September. Flight prices, which tend to average around £544, are often lower during this time because this is during the off-season. The month of February is another great option to travel to Portland, Maine, with average flight prices from London averaging around £549.

What is the cheapest day to depart on your flight to Portland, Maine?

According to our data, Monday is the cheapest day to fly to Portland, Maine from London. The lowest ticket price found for a Monday departure recently was £643. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. Be sure to avoid booking your departure on a Friday as prices are generally higher than usual. According to our data, the average ticket price to Portland, Maine on Friday is £784.

What is the cheapest time of day to depart on your flight to Portland, Maine?

Our data shows that the cheapest London to Portland, Maine flights are usually those with departure times in the evening. Our users have found flights to Portland, Maine in the evening for as low as £603. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are £791 on average. Flights to Portland, Maine from London in the afternoon are generally more expensive because this time of day is more convenient for travellers’ schedules.

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

You could potentially save up to 34% on your flight if you consider stops on a London to Portland, Maine flight.

When to book flights from London to Portland, Maine

Are you open to changing your travel dates? Check out the ideal times to fly from London to Portland, Maine according to our flight data. Find out which month and days have the cheapest flights.

Estimated return price

Cheap London to Portland, Maine (LON to PWM) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London to Portland, Maine

Direct flights	None

There are no direct flights from London to Portland, Maine. There are no popular flight routes from London to Portland, Maine.

Search flight deals

How far is London to Portland by plane?
Portland is 3183.1 mi away from London. In terms of flight time, this usually takes a little over 12h 09m.
When did momondo last update prices for flights from London to Portland Airport?
Prices for flights from London to Portland Airport were last updated today.
How many operators does momondo search for flights from London to Portland Airport?
As of October 2025, there are 6 operators available to choose from for flights from London to Portland Airport.
How old do you have to be to fly from London to Portland Airport?
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 London to Portland Airport.
What documentation or ID do you need to fly to Portland Airport?
The necessary travel and health documents for your Portland Airport 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.
What is the most popular airline from London to Portland, Maine?
Based on momondo bookings for this flight route, the most popular airline on flight routes from London to Portland, Maine is United Airlines (29% of total bookings). The next most popular airlines are Finnair (18%), JetBlue (16%), and KLM (12%).

Best airlines flying from London to Portland, Maine

Compare and see reviews for airlines that fly from London to Portland, Maine with momondo

Airline	Rating	Free Cancellation	Price
Icelandair	PriceFrom £387	Free Cancellation	Rating 7.1 562 reviews	Search Icelandair flights
JetBlue	PriceFrom £402	Free Cancellation	Rating 7.2 2,907 reviews	Search JetBlue flights
Virgin Atlantic	PriceFrom £475	Free Cancellation	Rating 7.5 670 reviews	Search Virgin Atlantic flights
Finnair	PriceFrom £476	Free Cancellation	Rating 7.6 1,333 reviews	Search Finnair flights
KLM	PriceFrom £504	Free Cancellation	Rating 7.7 1,406 reviews	Search KLM flights
United Airlines	PriceFrom £561	Free Cancellation	Rating 7.4 9,001 reviews	Search United Airlines flights

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Why should I use momondo to find a flight deal from London to Portland?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from London to Portland . Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from London to Portland with flexible booking policies on momondo?

Flights from London to Portland with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from London to Portland?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from London to Portland.

I’m not ready to book a flight from London to Portland right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Portland, momondo offers a useful price alert feature which will track prices for flights to Portland from London and alert you when they change.

An easier way to manage your Portland, Maine trip

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Cheap flights from London to Portland from £457

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London to Portland departing on 9/12. 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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Big names, great deals

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Delta flights from London to Portland, Maine

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

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

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How to get the cheapest flight ticket from London to Portland, Maine

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 typical price of a round-trip flight between London and Portland, Maine?

What is the cheapest month to fly to Portland, Maine?

What is the cheapest day to depart on your flight to Portland, Maine?

What is the cheapest time of day to depart on your flight to Portland, Maine?

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

You could potentially save up to 34% on your flight if you consider stops on a London to Portland, Maine flight.

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

Delta is the most popular carrier operating from London to Portland

Which airlines fly to Portland, Maine?

Which airport is the most popular for stopovers for flights between London and Portland, Maine?

Philadelphia (PHL) was the most common stop: 33% of momondo users choosing one-stop flights on this route connected there.

Which stopover airport offers the lowest fares from London to Portland, Maine?

Flights via Newark (EWR) offer the lowest average return price of £578.

Which stopover airport has the shortest travel time from London to Portland, Maine?

Flights connecting via Newark (EWR) have the shortest average one-way travel time: 11h 23m.

Which stopover airport has the shortest connection time from London to Portland, Maine?

Newark (EWR) has the shortest average stopover time for this route: 1h 22m.

When to book flights from London to Portland, Maine

Cheap London to Portland, Maine (LON to PWM) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London to Portland, Maine

Direct flights

How far is London to Portland by plane?

When did momondo last update prices for flights from London to Portland Airport?

How many operators does momondo search for flights from London to Portland Airport?

How old do you have to be to fly from London to Portland Airport?

What documentation or ID do you need to fly to Portland Airport?

What is the most popular airline from London to Portland, Maine?

Best airlines flying from London to Portland, Maine

Compare and see reviews for airlines that fly from London to Portland, Maine with momondo

Travelling to a place near Portland?

Why use momondo?

Why should I use momondo to find a flight deal from London to Portland?

Can I find flights from London to Portland with flexible booking policies on momondo?

How can momondo help me find flights from London to Portland?

I’m not ready to book a flight from London to Portland right now. Can momondo alert me if prices change?

An easier way to manage your Portland, Maine 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 States

Airports servicing Maine