Question 1

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

Accepted Answer

Currently priced at £358, 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 TAP AIR PORTUGAL - these airlines can fly you to your destination from £525 and £539, respectively. JetBlue is 44% cheaper than the average price of flights available within the next 90 days to this destination.

Question 2

What are the cheapest airlines to fly from London to Portland, Maine one-way?

Accepted Answer

The cheapet airlines for a one-way flight from London to Portland, Maine are JetBlue (£642), Scandinavian Airlines (£841), and TAP AIR PORTUGAL (£862).

Question 3

How far ahead should I book a flight from London to Portland, Maine?

Accepted Answer

The price you pay for your flight from London to Portland, Maine may vary depending on when you book. For the best chance of a lower fare, look to book 29 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

Question 4

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 5

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 6

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 7

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 8

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 9

How far in advance should I book a flight from London to Portland, Maine?

Accepted Answer

Travelers have found it’s best to book a flight 30 days in advance to save up to 77% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 30 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from London to Portland, Maine 1-2 weeks in advance for as low as £551, or £885 for flights within the next 24 hours.

Question 10

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

Accepted Answer

The best pricing can be found in the month of September. Prices to Portland, Maine from London average £650. You can even find prices in September for less than £650, as users have found deals to Portland, Maine from as low as £443. 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 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 24% on the flight price compared to flying in the afternoon, 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	£358
Popular in	August
Cheapest in	September
Average price	£763

Airline	Cheapest	Average	Flexibility	On-time
Icelandair	Cheapest£383	Average£590	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
JetBlue	Cheapest£397	Average£602	FlexibilityNo cancel fee	On-time62%	Search JetBlue flights
Virgin Atlantic	Cheapest£468	Average£641	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
Finnair	Cheapest£470	Average£593	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
KLM	Cheapest£481	Average£618	FlexibilityNo cancel fee	On-time75%	Search KLM flights
Lufthansa	Cheapest£511	Average£918	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
United Airlines	Cheapest£554	Average£734	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights

Cheap flights from London to Portland, Maine from £358

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/8. Fares are subject to change and may not be available on all flights or dates of travel.

Cheapflights Tip: The best prices from London to Portland are usually found in September or February, booked 63 days in advance, depart on a Monday or Thursday and return on a Monday

Cheap flight deals from London to Portland

Round-trip from

Popular in

Cheapest in

Average price

Find flight deals from London to Portland

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 15 July 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 15 July 2025.

Cheapflights Fare Finder

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

How far ahead should I book a flight from London to Portland, Maine?

Use this chart to determine the optimal time to book a return flight from London to Portland. Price data was last updated on 11 July 2025.

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 15 July 2025.

Reviews of airlines servicing Portland

Get a feel of what it's like to fly with Delta, United Airlines, andVirgin Atlantic 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?

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

What are the cheapest airlines to fly from London to Portland, Maine one-way?

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?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for London to Portland

See prices for flight routes from nearby airports that may be better suited for you.

Top 7 airlines flying from London to Portland

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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?

100% Free

Book with Flexibility

Travel Smart

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 15 July 2025.