$496 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 3/1. 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$605
Porto
Porto2 stops$673
Ponta Delgada
Ponta Delgada1 stop$1,048
Lisbon
Lisbon2 stops$605
Porto
Porto2 stops$673
Ponta Delgada
Ponta Delgada1 stop$1,048

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

Wed, Feb 25 - Sun, Mar 1
United Airlines Logo
5:45 am - 8:10 am
PWM
-
LIS
21h 25m
2 stops
United Airlines Logo
11:55 am - 11:20 pm
LIS
-
PWM
16h 25m
2 stops
$605United Airlines
Wed, Feb 25 - Sun, Mar 1
United Airlines Logo
3:05 pm - 8:10 am
PWM
-
LIS
12h 05m
1 stop
United Airlines Logo
11:55 am - 11:20 pm
LIS
-
PWM
16h 25m
2 stops
$606United Airlines
Fri, May 1 - Wed, May 6
Lufthansa Logo
7:10 pm - 9:55 pm
PWM
-
LIS
21h 45m
2 stops
Lufthansa Logo
7:25 am - 9:19 pm
LIS
-
PWM
18h 54m
2 stops
$653Lufthansa
Thu, Apr 30 - Thu, May 7
KLM Logo
2:51 pm - 8:00 am
PWM
-
LIS
12h 09m
1 stop
KLM Logo
10:25 am - 12:34 am
LIS
-
PWM
19h 09m
2 stops
$671KLM
Thu, Apr 30 - Tue, May 5
Multiple Airlines Logo
2:51 pm - 10:45 am
PWM
-
LIS
14h 54m
2 stops
Multiple Airlines Logo
9:20 am - 12:46 am
LIS
-
PWM
20h 26m
2 stops
$675Multiple Airlines
Thu, Apr 30 - Thu, May 7
Multiple Airlines Logo
2:51 pm - 10:45 am
PWM
-
LIS
14h 54m
2 stops
Multiple Airlines Logo
10:25 am - 12:34 am
LIS
-
PWM
19h 09m
2 stops
$676Multiple Airlines
Tue, May 26 - Wed, Jun 3
TAP AIR PORTUGAL Logo
6:00 am - 2:40 pm
PWM
-
PDL
28h 40m
2 stops
TAP AIR PORTUGAL Logo
8:25 am - 1:23 pm
PDL
-
PWM
32h 58m
2 stops
$1,242TAP AIR PORTUGAL
Mon, Jun 22 - Thu, Jul 9
KLM Logo
2:35 pm - 10:30 am
PWM
-
OPO
14h 55m
1 stop
KLM Logo
12:25 pm - 11:59 pm
OPO
-
PWM
16h 34m
1 stop
$1,333KLM
Wed, Jun 24 - Tue, Jun 30
TAP AIR PORTUGAL Logo
3:16 pm - 2:00 pm
PWM
-
PDL
18h 44m
2 stops
TAP AIR PORTUGAL Logo
9:50 pm - 12:07 am
PDL
-
PWM
30h 17m
2 stops
$1,511TAP AIR PORTUGAL
Wed, Jun 24 - Tue, Jun 30
Lufthansa Logo
8:15 pm - 8:20 am
PWM
-
PDL
32h 05m
2 stops
Lufthansa Logo
11:00 am - 1:42 pm
PDL
-
PWM
30h 42m
1 stop
$3,772Lufthansa
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 ($605) and TAP AIR PORTUGAL ($1,242).

Find deals

Good to know

Low seasonFebruary
Cheapest flight$496
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 Porto

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 9296 reviews
7.7Boarding
6.6Food
8.1Crew
7.1Entertainment
7.3Comfort
Airline reviews

Both the WIFI and entertainment did not work for 2.5h

6.0 GoodAnonymous, Feb 2026
HNL - NRT
Read more United Airlines reviews

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.

Crew was great (professional, attentive, prompt). Snacks for 4 hrs flight is deplorable.

Flight delayed. WiFi connectivity very poor if not existant. Last minute arrival forced me to run to catch my connection.

Both of my flights arrived early and check in process was smooth

Terrible. No customer service, no food, no drinks on a 6 hour premier economy booking.

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

Information on your arrival and departure airports

Portland (PWM)