Question 1

What’s the cheapest stopover airport for flights from London to Portland, Maine?

Accepted Answer

Chicago (ORD) is the most affordable one-stop option, with an average return flight price of £473.

Question 2

What’s the fastest stopover option from London to Portland, Maine?

Accepted Answer

Flights via Newark (EWR) have the shortest average one-way travel time for one-stop routes: 11h 42m.

Question 3

Which airport typically offers the quickest stopover for flights from London to Portland, Maine?

Accepted Answer

Flights via Chicago (ORD) offer the fastest connection on this route, with an average stopover time of 1h 10m.

Question 4

What’s the top stopover airport for flights from London to Portland, Maine?

Accepted Answer

New York (JFK) – chosen by Cheapflights users on 48% of one-stop itineraries from London to Portland, Maine on Cheapflights.

Question 5

How long is the flight from London to Portland, Maine?

Accepted Answer

United Airlines can get you from London to Portland, Maine in just under 19h 30m. Your travel time can differ by up to . The distance between London and Portland, Maine is about 3173 mi.

Question 6

What are the cheapest airlines flying from London to Portland, Maine round-trip?

Accepted Answer

Currently priced at £400, JetBlue will fly you from London to Portland, Maine and back. In addition to JetBlue, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Virgin Atlantic and Finnair - these airlines can fly you to your destination from £471 and £473, respectively. JetBlue is 37% cheaper than the average price of flights available within the next 90 days to this destination.

Question 7

What is the cheapest month to book a flight from London to Portland, Maine?

Accepted Answer

Currently, July is the cheapest month in which you can book a flight from London to Portland, Maine (average of £140). Flying from London to Portland, Maine in August is currently the most expensive (average of £364). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Question 8

E

Accepted Answer

In terms of precipitation, rainfall in Portland, Maine ranges from 73.0 - 115.0 inches per month. November is typically the wettest month, when rainfall can reach 115.0 mm. August is typically the driest time to visit Portland, Maine when rainfall is around 73.0 mm.

Question 9

E

Accepted Answer

If weather is an important factor for your trip to Portland, Maine, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 20.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -5.0 C).

Question 10

What are the most popular airlines that fly from London to Portland, Maine?

Accepted Answer

United Airlines, KLM and JetBlue are the most popular airlines when flying from London to Portland, Maine.

Question 11

What is the cheapest time of day to fly from LON to PWM?

Accepted Answer

It’s typically best to fly out from London to Portland, Maine in the evening. Doing so could potentially save you 39% on the flight price compared to flying at midday, which is usually more expensive.

Question 12

What airport do you fly into for flights to Portland from London?

Accepted Answer

If you book a flight to Portland from London, you will be flying to Portland, which is the city’s only airport. Portland (PWM) is located 2.9 mi from the center of Portland. There are 0 flights from London to Portland per day from 7 different airlines.

Question 13

Can I find deals for flights from London to Portland that include hotel bookings?

Accepted Answer

Yes. In addition to deals on London to Portland flights, Cheapflights offers holiday packages that include both flights and hotel.

Question 14

How can I find direct flights from London to Portland?

Accepted Answer

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to Portland.

Question 15

Can I find deals for business class flights from London to Portland?

Accepted Answer

Yes. Cheapflights offers flight deals from London to Portland by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

Question 16

How does Cheapflights help users find flights from London to Portland?

Accepted Answer

When you search for this flight from London to Portland, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Question 17

Why should you use Cheapflights to find cheap flight tickets from London to Portland?

Accepted Answer

Cheapflights helps you find that perfect flight to Portland from London by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Question 18

Can Cheapflights find flights from London to Portland with no change fees?

Accepted Answer

Need flexible booking options for your flight to Portland from London? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Question 19

Can Cheapflights notify me if prices for flights from London to Portland become cheaper?

Accepted Answer

Of course! You can now track prices for flights from London to Portland and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

Round-trip from	£563
Popular in	August
Cheapest in	October
Average price	£846

Airline	Cheapest	Average	Flexibility	On-time
JetBlue	Cheapest£400	Average£529	FlexibilityNo cancel fee	On-time62%	Search JetBlue flights
Virgin Atlantic	Cheapest£471	Average£571	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
Finnair	Cheapest£473	Average£618	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
Icelandair	Cheapest£491	Average£645	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
KLM	Cheapest£502	Average£622	FlexibilityNo cancel fee	On-time75%	Search KLM flights
Lufthansa	Cheapest£514	Average£924	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
United Airlines	Cheapest£558	Average£727	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights

Cheap flights from London to Portland, Maine from £563

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 28/1. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from London to Portland

Best flights from London to PortlandDiscover carefully curated flight deals from London to Portland that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 13 December 2025.

Discover carefully curated flight deals from London to Portland that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 13 December 2025.

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Best time to book a flight from London to Portland

Have a flexible travel schedule? Discover the best time to fly to Portland from London with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from London to Portland

What is the cheapest month to book a flight from London to Portland, Maine?

What is the cheapest time of day to fly from LON to PWM?

Find hourly flight availability from London to Portland. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 13 December 2025.

What’s the top stopover airport for flights from London to Portland, Maine?

Share of one-stop return flights from London to Portland, Maine chosen by Cheapflights users in the past 12 months, using the same stopover each way.

What’s the cheapest stopover airport for flights from London to Portland, Maine?

Average return fare for one-stop flights from London to Portland, Maine, chosen by Cheapflights users in the past 12 months, with the same stopover each way.

What’s the fastest stopover option from London to Portland, Maine?

Shortest average travel time for one-stop one-way flights from London to Portland, Maine, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.

Which airport typically offers the quickest stopover for flights from London to Portland, Maine?

Average stopover duration for one-stop one-way flights from London to Portland, Maine, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Reviews of airlines servicing Portland

Get a feel of what it's like to fly with KLM, Finnair, andUnited Airlines from London to Portland by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from London to Portland. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly into for flights to Portland from London?

How long is the flight from London to Portland, Maine?

What are the cheapest airlines flying from London to Portland, Maine round-trip?

Can I find deals for flights from London to Portland that include hotel bookings?

How can I find direct flights from London to Portland?

Can I find deals for business class flights from London to Portland?

What is the cheapest month to book a flight from London to Portland, Maine?

Travelling to a place near Portland?

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Alternative routes for London to Portland

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Top 7 airlines flying from London to Portland

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How does Cheapflights help users find flights from London to Portland?

Why should you use Cheapflights to find cheap flight tickets from London to Portland?

Can Cheapflights find flights from London to Portland with no change fees?

Can Cheapflights notify me if prices for flights from London to Portland become cheaper?

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Best flights from London to Portland
Discover carefully curated flight deals from London to Portland that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 13 December 2025.