Q: How much does it cost for a return flight from London to Portland, Maine?

Airfare is below average for this route at the moment. London to Portland, Maine flights typically cost between £508 and £597 in October. The cheapest return flight price found within the last 3 days was £458 on JetBlue (14 Oct-21 Oct).

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 £468.

Question 2

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

Accepted Answer

New York (JFK) – chosen by Cheapflights users on 51% of one-stop itineraries from London to Portland, Maine on Cheapflights.

Question 3

How much does it cost for a return flight from London to Portland, Maine?

Accepted Answer

Airfare is below average for this route at the moment.London to Portland, Maine flights typically cost between £508 and £597 in October.
The cheapest return flight price found within the last 3 days was £458 on JetBlue (14 Oct-21 Oct).

Question 4

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 50m.

Question 5

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 6

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

Accepted Answer

JetBlue, Delta, and Virgin Atlantic can get you from London to Portland, Maine in just under 19h 36m. Your travel time can differ by up to 13m. The distance between London and Portland, Maine is about 3173 mi. Both multi-stop and direct flights can be found to your destination and back.

Question 7

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

Accepted Answer

Currently priced at £381, Icelandair will fly you from London to Portland, Maine and back. In addition to Icelandair, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from JetBlue and Virgin Atlantic - these airlines can fly you to your destination from £396 and £467, respectively. Icelandair is 41% cheaper than the average price of flights available within the next 90 days to this destination.

Question 8

What is the cheapest day to fly from London to Portland, Maine?

Accepted Answer

Travellers seeking maximum savings on their London to Portland, Maine flight should consider departing on Tuesday afternoons when fares are most often at their lowest. Monday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Question 9

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 10

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 11

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

Accepted Answer

Finnair, JetBlue and Icelandair are the most popular airlines when flying from London to Portland, Maine.

Question 12

What is the cheapest day to fly round-trip from London to Portland, Maine?

Accepted Answer

Thursday flights are generally found to be more expensive for flights from London to Portland, Maine. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Portland, Maine.

Question 13

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

Accepted Answer

The best pricing can be found in the month of February. Prices to Portland, Maine from London average £647. You can even find prices in February for less than £647, as users have found deals to Portland, Maine from as low as £479. The month of August appears to be one of the more expensive times to travel to Portland, Maine from London. Flying in the targeted month can save you up to 27%.

Question 14

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 24% on the flight price compared to flying in the afternoon, which is usually more expensive.

Question 15

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 6 different airlines.

Question 16

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 17

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 18

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 19

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 20

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 21

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 22

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	£458
Popular in	August
Cheapest in	February
Average price	£825

Airline	Cheapest	Average	Flexibility	On-time
Icelandair	Cheapest£381	Average£588	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
JetBlue	Cheapest£396	Average£577	FlexibilityNo cancel fee	On-time62%	Search JetBlue flights
Virgin Atlantic	Cheapest£467	Average£639	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
Finnair	Cheapest£469	Average£578	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
KLM	Cheapest£479	Average£616	FlexibilityNo cancel fee	On-time75%	Search KLM flights
United Airlines	Cheapest£552	Average£731	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights

Cheap flights from London to Portland, Maine from £458

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 14/10. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from London to Portland

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Cheapest flights from London to PortlandExplore the most affordable flight options available from London to Portland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 31 August 2025.

Explore the most affordable flight options available from London to Portland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 31 August 2025.

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Use the filters below to find and compare flights from London to Portland that are best for you.

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 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 31 August 2025.

How much does it cost for a return flight from London to Portland, Maine?

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?

Travelling to a place near Portland?

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Alternative routes for London to Portland

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Top 6 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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Cheapest flights from London to Portland
Explore the most affordable flight options available from London to Portland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 31 August 2025.