Cheap flights from Portland to Lisbon

One-way fares from $483 · PWM → LIS · prices found by travellers in the last 48 hours

Compare all dates Lisbon → Portland
Cheapest fare
$483

United Airlines · Mon, Dec 14

Cheapest month
December

from $483

Direct flights
Not recently

Usually 1+ stop

Quickest trip
12h 15m

5,030 km

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Cheapest month to fly from Portland to Lisbon

Lowest one-way fare per person in each month. Choose a month to see every date.

  1. December 2026 Cheapest $483

Cheapest dates in December 2026

The lowest fares we've seen for each day, cheapest first.

United Airlines
Depart14:15 Mon, Dec 14PWM → LIS 12h 15m · 2 stops
$483one way, per person
View deal
See every date in December 2026 →

Plan the rest of your trip to Lisbon

Where to stay, what to do and getting around, from our travel partners.

Where to stay

Hotels in LisbonCompare places to stay on Booking.com Find hotels →

Things to do

Things to do in LisbonTours, attractions and day trips on Klook Explore →

Getting around

Airport transfer in LisbonPre-book a driver to meet you at arrivals, with Kiwitaxi Book a transfer → Car hire in LisbonCompare rental cars from major brands on EconomyBookings Compare cars →

Stay connected

eSIM for PortugalMobile data from the moment you land, by Airalo Get eSIM →

About flights from Portland to Lisbon

Portland (PWM) and Lisbon (LIS) are about 5,030 km apart. We haven't seen direct fares on this route recently, so expect at least one stop; the quickest journey we've seen takes about 12h 15m. Over the next few months, one-way fares start from $483, and December 2026 is currently the cheapest month to fly.

These prices come from searches travellers made in the last 48 hours, so they move quickly. If you see a good fare, it's worth booking soon. FlightsExp is free to use: you book directly with our travel partner.

Frequently asked questions

How much is a flight from Portland to Lisbon?

The cheapest one-way fare we've seen recently is $483 with United Airlines, departing Monday, December 14, 2026.

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

December 2026 currently has the lowest fares, from $483 one way.

Are there direct flights from Portland to Lisbon?

We haven't seen direct fares recently, so most journeys include at least one stop.

How long is the flight from Portland to Lisbon?

The quickest journey we've seen takes about 12h 15m. Portland and Lisbon are around 5,030 km apart.

Which airlines fly from Portland to Lisbon?

Recent fares on this route were with United Airlines.

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