$568 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 5/18. 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$768
Porto
Porto1 stop$881
Ponta Delgada
Ponta Delgada2 stops$1,517
Lisbon
Lisbon2 stops$768
Porto
Porto1 stop$881
Ponta Delgada
Ponta Delgada2 stops$1,517

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, Apr 29 - Mon, May 4
KLM Logo
2:51 pm - 2:35 pm
PWM
-
LIS
18h 44m
2 stops
KLM Logo
7:45 pm - 3:57 pm
LIS
-
PWM
25h 12m
2 stops
$768KLM
Thu, Sep 17 - Tue, Sep 22
Turkish Airlines Logo
6:00 am - 9:50 am
PWM
-
LIS
22h 50m
2 stops
Turkish Airlines Logo
5:55 am - 11:52 pm
LIS
-
PWM
46h 57m
2 stops
$804Turkish Airlines
Wed, May 6 - Wed, May 13
KLM Logo
2:51 pm - 2:35 pm
PWM
-
LIS
18h 44m
2 stops
KLM Logo
5:00 am - 12:43 am
LIS
-
PWM
24h 43m
2 stops
$805KLM
Thu, Sep 17 - Tue, Sep 22
Turkish Airlines Logo
6:00 am - 9:50 am
PWM
-
LIS
22h 50m
2 stops
Turkish Airlines Logo
5:55 am - 11:52 pm
LIS
-
PWM
22h 57m
2 stops
$816Turkish Airlines
Wed, Apr 29 - Mon, May 4
Delta Logo
12:46 pm - 10:55 am
PWM
-
LIS
17h 09m
2 stops
Delta Logo
10:00 am - 12:46 am
LIS
-
PWM
19h 46m
1 stop
$829Delta
Wed, Apr 29 - Mon, May 4
Delta Logo
2:51 pm - 8:00 am
PWM
-
LIS
12h 09m
1 stop
Delta Logo
10:00 am - 12:46 am
LIS
-
PWM
19h 46m
1 stop
$873Delta
Tue, Sep 22 - Tue, Oct 6
Air Canada Logo
6:00 am - 7:00 am
PWM
-
OPO
20h 00m
2 stops
Air Canada Logo
12:15 pm - 9:11 am
OPO
-
PWM
25h 56m
2 stops
$895Air Canada
Wed, May 6 - Sun, May 10
United Airlines Logo
7:10 pm - 8:40 am
PWM
-
PDL
33h 30m
2 stops
United Airlines Logo
11:00 am - 6:23 pm
PDL
-
PWM
11h 23m
1 stop
$1,517United Airlines
Wed, May 6 - Sun, May 10
United Airlines Logo
7:10 pm - 8:40 am
PWM
-
PDL
33h 30m
2 stops
United Airlines Logo
11:00 am - 9:19 pm
PDL
-
PWM
14h 19m
2 stops
$1,567United Airlines
Thu, May 21 - Thu, May 28
TAP AIR PORTUGAL Logo
2:36 pm - 6:50 pm
PWM
-
PDL
24h 14m
2 stops
TAP AIR PORTUGAL Logo
6:30 am - 11:58 pm
PDL
-
PWM
21h 28m
2 stops
$1,903TAP AIR PORTUGAL
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 KLM ($768) and Turkish Airlines ($804).

Good to know

Low seasonFebruary
Cheapest flight$568
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 9562 reviews
7.7Boarding
6.6Food
8.1Crew
7.1Entertainment
7.3Comfort
Airline reviews

Great flight. Got to watch a movie. Smooth flight and early arrival at ORD.

10.0 ExcellentDr. Joseph, Apr 2026
IAH - ORD
Read more United Airlines reviews

Great flight. Got to watch a movie. Smooth flight and early arrival at ORD.

This was the first flight in the morning. We boarded fine. The cabin door was closed and we were ready to go. We were notified by the Captain that ATC issued and ground stop for 40 minutes. So, without even pushing back from the gate, we were already 40 minutes late. We actually were released to push-back and taxi at 30 minutes. But, some passengers had tight connections and were not going to make their connections. Some passengers asked about the delay and the effect on the connections and were told by the cabin attendant that all flights will be delayed and so they should be OK. However, that was not true. My connecting flight was on time and I arrived at IAH with 21 minutes to make my connection. I did and I'm happy about that, but the flight crew should not have given assurances to the passengers who might have missed their connections.

Poor communication, flight was delayed for preventable reasons. I missed my connection.

It was better than excellent. The staff in Mason City were great. The young woman that pushed my wheelchair did more than could be expected of her. She came from India 17 years ago. I don't remember her name.

After arriving in Chicago, we were taxiing for 1.5 hours with infrequent and untruthful updates about the amount of time it would take to arrive at the gate. Minimally, the team could have provided timing expectations that were more truthful, especially one their original expectations were not met.

All good flight was 35 minutes early when arriving in Edinburgh

Flights were on time actually early service was good and crew cheerful

Every staff member was professional, friendly and courteous. The pizza twist was ok. It was warm but too much dough.

The boarding timing needs to be improved. The flight was delayed again because it took way too long to board. I was already exhausted from sleeping at the airport and spending all day there due to delay from my previous flight that connected in Chicago.

I had a terrible experience. My flight got delayed from Atlanta to Chicago on Monday April 6, 2026, and that led to me missing my next flight to Brussels. United Airlines didn’t provide me with any accommodation for shelter. I had to sleep at the airport in Chicago. The next flight I was put on didn’t leave until the evening hours of Tuesday 4/7/2026.

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

Information on your arrival and departure airports