$420 Find Cheap Flights from Portland to Portugal

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Portland to Portugal departing on 4/8. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Cheap Flights from Portland to Portugal

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Lisbon
Lisbon2 stops$530
Porto
Porto2 stops$929
Ponta Delgada
Ponta Delgada1 stop$1,098
Lisbon
Lisbon2 stops$530
Porto
Porto2 stops$929
Ponta Delgada
Ponta Delgada1 stop$1,098

Book Cheap Portland to Portugal Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Portland to Portugal that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Portland to Portugal

Sun, Mar 1 - Tue, Mar 17
United Airlines Logo
6:00 am - 10:15 am
PWM
-
LIS
23h 15m
2 stops
United Airlines Logo
5:00 am - 10:49 am
LIS
-
PWM
33h 49m
2 stops
$530United Airlines
Sun, Mar 1 - Tue, Mar 17
United Airlines Logo
3:10 pm - 8:10 am
PWM
-
LIS
12h 00m
1 stop
United Airlines Logo
11:55 am - 2:32 pm
LIS
-
PWM
30h 37m
1 stop
$542United Airlines
Tue, Mar 24 - Wed, Apr 8
KLM Logo
2:30 pm - 10:35 am
PWM
-
LIS
16h 05m
2 stops
KLM Logo
5:00 am - 11:59 pm
LIS
-
PWM
23h 59m
2 stops
$570KLM
Sun, Mar 22 - Mon, Mar 30
Scandinavian Airlines Logo
2:30 pm - 8:55 am
PWM
-
LIS
14h 25m
1 stop
Scandinavian Airlines Logo
6:50 pm - 1:50 pm
LIS
-
PWM
24h 00m
2 stops
$605Scandinavian Airlines
Sat, May 2 - Sat, May 9
United Airlines Logo
7:10 pm - 8:20 am
PWM
-
LIS
32h 10m
2 stops
United Airlines Logo
5:05 am - 9:19 pm
LIS
-
PWM
45h 14m
2 stops
$620United Airlines
Sun, Apr 19 - Wed, Apr 29
Delta Logo
4:43 pm - 5:50 pm
PWM
-
LIS
20h 07m
2 stops
Delta Logo
5:35 am - 11:23 pm
LIS
-
PWM
22h 48m
2 stops
$674Delta
Sun, Mar 22 - Mon, Mar 30
Scandinavian Airlines Logo
2:30 pm - 8:55 am
PWM
-
LIS
14h 25m
1 stop
Scandinavian Airlines Logo
10:00 am - 11:59 pm
LIS
-
PWM
18h 59m
1 stop
$683Scandinavian Airlines
Wed, Mar 25 - Wed, Apr 8
KLM Logo
2:30 pm - 10:35 am
PWM
-
LIS
16h 05m
2 stops
KLM Logo
5:00 am - 11:59 pm
LIS
-
PWM
23h 59m
2 stops
$695KLM
Fri, Apr 24 - Thu, Apr 30
Multiple Airlines Logo
7:00 am - 6:45 am
PWM
-
PDL
19h 45m
1 stop
Multiple Airlines Logo
6:05 pm - 11:36 pm
PDL
-
PWM
33h 31m
2 stops
$1,098Multiple Airlines
Fri, Apr 24 - Thu, Apr 30
Multiple Airlines Logo
6:00 am - 6:45 am
PWM
-
PDL
20h 45m
2 stops
Multiple Airlines Logo
6:05 pm - 11:36 pm
PDL
-
PWM
33h 31m
2 stops
$1,282Multiple Airlines
Booking Insights

KAYAK's insights & trends for Portland to Portugal flights

Get data-powered insights and trends into flights from Portland to Portugal to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from Portland to Portugal?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Portland to Portugal were found on United Airlines ($530) and KLM ($570).

Find deals

Good to know

Low seasonFebruary
Cheapest flight$420
Best time to beat the crowds with an average 31% drop in price.
Most popular time to fly and prices are also 40% lower on average.
Flight from Portland to Lisbon

FAQs - booking Portugal flights

  • How does KAYAK find such low prices on flights from Portland to Portugal?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Portland to Portugal.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Portland to Portugal?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Portland to Portugal is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Portland to Portugal?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Portland to Portugal with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Portland to Portugal?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Portland to Portugal up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Portland to Portugal

 
Need help choosing which airline to fly with from Portland to Portugal? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 9325 reviews
7.3Comfort
7.1Entertainment
7.7Boarding
6.6Food
8.1Crew
Airline reviews

it was a very short flight so my expectations were low.

6.0 GoodGeorge, Feb 2026
SFO - PSP
Read more United Airlines reviews

it was a very short flight so my expectations were low.

As great a red-eye flight as red-eye flights can be.

Once boarding started it was pretty quick. Food was inedible; cold and salty..

Entertainment kept turning itself off. Gave up on watching a movie.

Both the WIFI and entertainment did not work for 2.5h

The crew made our experience extremely bad. They were rude and didn’t have anything for kids.

Very old flight - time to retire it for newer airplanes

2+ hours delayed Outlet in row 12 did not work Tv monitors did not work Lights kept off the entire flight for at 5pm-7pm flight

Very disappointing given gate agent behavior. Filed a formal complaint with United.

Do not like the size of the overhead bin. I think staff should monitor the size of suitcases that are being carried on by passengers to ensure they meet the size requirement.

Everything you need to know for your flight from Portland to Portugal

Information on your arrival and departure airports

Portland (PWM)