Question 1

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

Accepted Answer

Currently priced at £540, Lufthansa will fly you from London to Portland and back. In addition to Lufthansa, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from British Airways and United Airlines - these airlines can fly you to your destination from £541 and £551, respectively. Lufthansa is 18% 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 one-way?

Accepted Answer

For one-way options, check prices for WestJet. According to our data, you can fly for as low as £419. Users have also found prices from £446 and £513 on Icelandair and Lufthansa, respectively.

Question 3

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

Accepted Answer

The best time to book flights from London to Portland is 86 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

Question 4

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

Accepted Answer

Currently, January is the cheapest month in which you can book a flight from London to Portland (average of £736). Flying from London to Portland in July is currently the most expensive (average of £1,048). 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 5

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

Accepted Answer

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

Question 6

Weekly flight availability from London to Portland

Accepted Answer

The most flights from LON to PDX are scheduled on a Monday (7 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (7 on average).

Question 7

E

Accepted Answer

In terms of precipitation, rainfall in Portland ranges from 18.0 - 142.0 inches per month. November is typically the wettest month, when rainfall can reach 142.0 mm. July is typically the driest time to visit Portland when rainfall is around 18.0 mm.

Question 8

E

Accepted Answer

If weather is an important factor for your trip to Portland, 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 21.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 5.0 C).

Question 9

What are the most popular routes from London to Portland?

Accepted Answer

The most popular route from London to Portland is London Heathrow - Portland. You may also consider London Gatwick - Portland or London City - Portland.

Question 10

What are the cheapest flights from London to Portland?

Accepted Answer

While on average a flight from London to Portland is generally £852, our data shows the cheapest flight currently is £481. When looking at the most popular route, (London Heathrow - Portland), you can expect to pay £398 for that flight.

Question 11

What are the most reliable airlines from London to Portland?

Accepted Answer

Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from London to Portland on time: American Airlines (83%), Alaska Airlines (83%), Aer Lingus (83%).

Question 12

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

Accepted Answer

American Airlines, Air Canada and Finnair are the most popular airlines when flying from London to Portland.

Question 13

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

Accepted Answer

Users have found that leaving on a Monday can be a cost-effective option. It’s possible to save up to 20% on your flight compared to booking on days when demand is much higher.

Question 14

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

Accepted Answer

Find a great deal and save up to 21% by booking at least 60 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from London to Portland within the next two weeks, with the cheapest ticket starting at £583.

Question 15

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

Accepted Answer

The best pricing can be found in the month of March. Prices to Portland from London average £660. You can even find prices in March for less than £660, as users have found deals to Portland from as low as £451. The month of August appears to be one of the more expensive times to travel to Portland from London. Flying in the targeted month can save you up to 40%.

Question 16

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

Accepted Answer

When flying from London to Portland, the time of day you fly usually plays a role in the price. Save by searching for a flight in the morning, which can drop the price by up to 20% versus a flight in the afternoon.

Question 17

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

Accepted Answer

Most people fly into Portland (PDX) if they book a flight to Portland from London. On average, Portland has 7 inbound flights from London per day from 10 airlines. Portland is conveniently located just 6.0 mi from Portland’s city center.

Question 18

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 19

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 20

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 21

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

Accepted Answer

Cheapflights helps you search for flights from London to Portland via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Question 22

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 23

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

Accepted Answer

Cheapflights does show flights with no change fees to all users. To see these options for flights from London to Portland, users can toggle the no change fees filter when performing a flight search.

Question 24

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

Accepted Answer

Yes, Cheapflights offers price alerts on London to Portland flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

Round-trip from	£540
One-way from	£411
Popular in	August
Cheapest in	March
Average price	£863
Good round-trip deal	£635 or less
Good one-way deal	£615 or less

Airline	Cheapest	Average	Flexibility	On-time
Icelandair	Cheapest£433	Average£660	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
Finnair	Cheapest£477	Average£584	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
United Airlines	Cheapest£478	Average£603	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Air Canada	Cheapest£486	Average£528	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
Virgin Atlantic	Cheapest£495	Average£634	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
British Airways	Cheapest£496	Average£684	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Lufthansa	Cheapest£506	Average£606	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
KLM	Cheapest£541	Average£683	FlexibilityNo cancel fee	On-time75%	Search KLM flights
American Airlines	Cheapest£544	Average£653	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights
Iberia	Cheapest£560	Average£735	FlexibilityNo cancel fee	On-time77%	Search Iberia flights

Cheap flights from London to Portland from £411

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 26/8. 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 March or February, booked 86 days in advance, depart on a Tuesday or Wednesday and return on a Friday

Cheap flight deals from London to Portland

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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 1 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 1 July 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

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

Use this chart to determine the optimal time to book a return flight from London to Portland. Price data was last updated on 27 June 2025.

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

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

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 1 July 2025.

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

Use this chart to determine the cheapest time to fly return from London to Portland. Price data was last updated on 20 October 2024.

Weekly flight availability from London to Portland

Explore weekly flight availability from London to Portland. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 1 July 2025.

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

Reviews of airlines servicing Portland

Read through reviews of airlines operating flights from London to Portland, such as Delta, Finnair, andSWISS. Reviews also offer insight into each airline's 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 round-trip?

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

What are the most popular routes from London to Portland?

What are the most reliable airlines from London to Portland?

What are the cheapest flights from London to Portland?

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?

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Fly from London to Portland on these airlines

Choose from the following airlines for your flight from London to Portland. Flights are based on user searches made on Cheapflights and were last updated on 1 July 2025.

Top 10 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 1 July 2025.