C$446 Cheap Flights from Portland (PDX) to Lisbon (LIS)

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Flight deals from Portland to Lisbon

Looking for a cheap last-minute deal or the best return flight from Portland Airport to Lisbon Airport? If you want to travel next month, return fares start from C$1,017. Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Portland to Lisbon

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Portland to Lisbon flights are currently cheapest in May.

Portland to Lisbon: Alternative routes

Compare routes from Portland to Lisbon below. You may find an airport to fly into that's cheaper, faster, or easier than Lisbon.

Portland to Lisbon: Flight information

The things to know before you go.
Cheapest flight foundC$446
Cheapest month to flyMay

Finding cheap flights from Portland to Lisbon: Frequently asked questions

The best price we found for a return flight from Portland to Lisbon is C$974. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Portland to Lisbon. But we found flights with one or more stops from C$974.
As of April 2026, there are no flights flying from Portland to Lisbon.
The cheapest month to fly from Portland to Lisbon is usually November.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Portland Airport to Lisbon Airport on Friday, November 6, 2026.
No airlines currently offer direct flights between Portland Airport and Lisbon Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Lisbon but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Lisbon is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, Finnair offers the cheapest flight tickets to Lisbon.

Traveling from Portland International Airport (PDX) to Lisbon Portela Airport (LIS): what you need to know

  • You can expect bigger queues during popular months like July and other peak seasons. Arriving up to four hours in advance for international flights and two hours for a domestic departure is a wise move.

  • If you'd like a stopover for your flight from Portland International Airport to Lisbon Portela Airport, simply uncheck 'Direct flights only' and look at all your options. These are the popular stopovers between PDX and LIS:

    • Newark Liberty International Airport

    • London Heathrow Airport

    • Amsterdam Airport Schiphol

How to find the cheapest flights from Portland International Airport (PDX) to Lisbon Portela Airport (LIS)

  • The best price we've seen for a one-way ticket from Portland International Airport to Lisbon Portela Airport is C$446. The cheapest price for a return flight is C$974. Bear in mind that fares could change due to demand at the time of booking.

  • To pick up cheap flight tickets from PDX to LIS, book in advance. Airlines typically offer their most competitively priced fares when flights are first made available.

  • If you're flexible with your travel dates, try using the 'Whole month' search function. It'll show you the lowest price in every month when looking for your ticket from Portland International Airport to Lisbon Portela Airport.

  • Finding a cheap ticket from PDX to LIS is straightforward with Price Alerts. Simply set up one of these automatic alerts and we'll notify you when the price has fallen.

  • Use filters to find the best journey for you. To see the 'Best,' 'Cheapest' or 'Fastest' flights from Portland International Airport to Lisbon Portela Airport, use the 'Sort by' tool. You can also filter results by airline, arrival and departure times, and journey duration.

Handy information about Portland International Airport (PDX)

Arriving at Lisbon Portela Airport (LIS)

Getting from Lisbon Portela Airport (LIS) to central Lisbon

  • Lisbon Portela Airport to central Lisbon is about 22 minutes by car. It's approximately 10 kilometres away. Discover what options are available, such as cabs, car rentals or ride-sharing services.

  • It takes around 59 minutes to get there using public transport.

When to fly to Lisbon Portela Airport (LIS)

  • June is the most popular month for flights from Portland International Airport to Lisbon Portela Airport. To avoid the crowds, head to Lisbon in February.

  • Lock in your flight from Portland International Airport to Lisbon Portela Airport for August if you'd like to visit Lisbon during its warmest month. You can expect temperatures of between 16ºC and 29ºC.

  • January has average temperatures of between 8ºC and 16ºC. Look for cheap flight tickets from PDX to LIS sometime around then if you like cooler conditions.

More about Lisbon

Complete your Lisbon trip with hotels and a car rental

  • You've booked a cheap ticket to Lisbon Portela Airport — now it's time to find a great place to stay, and maybe even your own set of wheels. We've compared prices across hundreds of companies to bring you the top hotels and car rental deals in Lisbon.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.