$395 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 7/22. 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$900
Porto
Porto1 stop$958
Ponta Delgada
Ponta Delgada1 stop$1,022
Lisbon
Lisbon2 stops$900
Porto
Porto1 stop$958
Ponta Delgada
Ponta Delgada1 stop$1,022

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

Fri, May 1 - Mon, May 4
Multiple Airlines Logo
3:02 pm - 6:00 pm
PWM
-
LIS
21h 58m
2 stops
Multiple Airlines Logo
7:10 am - 11:27 pm
LIS
-
PWM
21h 17m
2 stops
$900Multiple Airlines
Tue, Oct 6 - Mon, Oct 12
Delta Logo
2:35 pm - 2:35 pm
PWM
-
LIS
19h 00m
2 stops
Delta Logo
5:00 am - 11:49 pm
LIS
-
PWM
23h 49m
2 stops
$910Delta
Fri, Oct 9 - Wed, Oct 14
United Airlines Logo
6:55 pm - 9:45 am
PWM
-
OPO
9h 50m
1 stop
United Airlines Logo
12:35 pm - 8:02 pm
OPO
-
PWM
12h 27m
1 stop
$958United Airlines
Wed, Aug 26 - Tue, Sep 1
United Airlines Logo
3:44 pm - 6:55 am
PWM
-
OPO
10h 11m
1 stop
United Airlines Logo
12:35 pm - 6:54 pm
OPO
-
PWM
11h 19m
1 stop
$974United Airlines
Thu, Oct 8 - Sat, Oct 24
Delta Logo
2:35 pm - 3:25 pm
PWM
-
OPO
19h 50m
2 stops
Delta Logo
5:00 am - 10:23 pm
OPO
-
PWM
22h 23m
2 stops
$979Delta
Fri, Oct 9 - Wed, Oct 14
United Airlines Logo
6:55 pm - 9:45 am
PWM
-
OPO
9h 50m
1 stop
United Airlines Logo
12:45 pm - 6:14 pm
OPO
-
PWM
34h 29m
2 stops
$983United Airlines
Sun, Sep 6 - Mon, Sep 14
Air France Logo
2:35 pm - 11:15 am
PWM
-
LIS
15h 40m
2 stops
Air France Logo
6:50 pm - 1:54 pm
LIS
-
PWM
24h 04m
2 stops
$987Air France
Sat, Aug 29 - Sat, Sep 19
Scandinavian Airlines Logo
6:30 am - 9:00 am
PWM
-
LIS
45h 30m
2 stops
Scandinavian Airlines Logo
7:00 am - 11:59 pm
LIS
-
PWM
21h 59m
2 stops
$991Scandinavian Airlines
Wed, Aug 26 - Tue, Sep 1
KLM Logo
2:35 pm - 10:30 am
PWM
-
OPO
14h 55m
1 stop
KLM Logo
5:00 am - 10:33 pm
OPO
-
PWM
22h 33m
2 stops
$994KLM
Fri, May 1 - Mon, May 4
KLM Logo
6:30 am - 8:00 am
PWM
-
LIS
20h 30m
1 stop
KLM Logo
5:00 am - 12:46 am
LIS
-
PWM
24h 46m
2 stops
$1,038KLM
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 Delta ($910) and United Airlines ($958).

Good to know

Low seasonFebruary
Cheapest flight$395
Best time to beat the crowds with an average 46% drop in price.
Most popular time to fly and prices are also 30% 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 9613 reviews
7.3Comfort
8.1Crew
7.1Entertainment
7.7Boarding
6.6Food
Airline reviews

The flight was delayed from take off because only one runway was operational in San Francisco.

2.0 MediocreMartin, Apr 2026
EUG - SFO
Read more United Airlines reviews

The flight was delayed from take off because only one runway was operational in San Francisco.

Several missed and almost missed connections. It felt like everything was being patched together last minute without enough resources and it ended up being an extremely stressful experience that basically ruined our weekend on the west coast. What a waste.

Really hard landing... as in slammed into the runway then hit the brakes really hard ...

The flight was significantly delayed. The inbound flight from EWR was delayed departing because of mechanical problems. My original departure from CLT was 5:28 pm but due to the delay of the inbound flight, after arrival, deplaning, cleaning, boarding, we did not push back from the gate until 9:00 pm. Once in the air, the flight was smooth and what was originally supposed to be an arrival in ORD at 7:30 pm local time turned out to be 9:35 pm.

Putting people that close to the bathroom, where you have to look into the bathroom as people are exiting and entering was not great and the smell was also not great. I know the airlines are desperate for more chairs, but that seat is a crime.

My bags were misplaced!!! Im in a foreign country with no bags

The entertainment options on the seat back video boards were nice.

The flight I was supposed to be on was supposed to take off at 1:50 from State College. It was delayed over and over and over again until somehow I had to rebook on a flight that was supposed to have left State College at 8 am that morning but didn't end up taking off until almost 6 pm. Not only was this completely unacceptable, the "token from United" was a 15 dollar meal voucher that has to be used by today. I would personally like some miles added to my account for this inconvenience. I was in transit for 8 hours from the time I arrive at State College Aiport to when I got home. I was supposed to be home at 3 pm and I returned at 8 pm. Unacceptable. I have not been on an on Time united flight in nearly 5 years.

Crew was friendly. Seats are too narrow, particularly when a big person is in the adjacent seat, but I understand this is due to smaller planes usually flight into Lincoln. I have experienced several flight delays going out and coming into Lincoln airport, I say maybe 50% or higher of the flights I've taken out of this airport have been delayed.

newer aircraft, ability to connect my headset via blue tooth for entertainment.

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

Information on your arrival and departure airports