$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 9/10. 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

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Best Portugal Flight Deals from Portland

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Lisbon
Lisbon1 stop$612
Porto
Porto1 stop$920
Ponta Delgada
Ponta Delgada2 stops$1,236
Lisbon
Lisbon1 stop$612
Porto
Porto1 stop$920
Ponta Delgada
Ponta Delgada2 stops$1,236

Cheap Flights from Portland to Portugal

 
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

Mon, Dec 1 - Mon, Dec 8
United Airlines Logo
3:00 pm - 8:10 amPWM-LIS
12h 10m1 stop
United Airlines Logo
11:00 am - 9:35 pmLIS-PWM
39h 35m2 stops
$612United Airlines
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Mon, Dec 1 - Mon, Dec 8
Air Canada Logo
6:00 am - 9:20 amPWM-LIS
46h 20m2 stops
Air Canada Logo
11:00 am - 11:14 pmLIS-PWM
41h 14m2 stops
$617Air Canada
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Mon, Dec 1 - Mon, Dec 8
Air Canada Logo
6:00 am - 9:20 amPWM-LIS
22h 20m2 stops
Air Canada Logo
11:00 am - 6:13 pmLIS-PWM
36h 13m2 stops
$618Air Canada
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Mon, Dec 1 - Mon, Dec 8
American Airlines Logo
4:18 pm - 9:05 amPWM-LIS
11h 47m1 stop
American Airlines Logo
11:05 am - 10:29 pmLIS-PWM
16h 24m1 stop
$628American Airlines
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Wed, Sep 10 - Tue, Sep 16
United Airlines Logo
6:00 am - 9:20 amPWM-LIS
22h 20m2 stops
United Airlines Logo
11:25 am - 5:42 pmLIS-PWM
35h 17m2 stops
$871United Airlines
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Mon, Sep 15 - Thu, Sep 25
United Airlines Logo
3:11 pm - 6:55 amPWM-OPO
10h 44m1 stop
United Airlines Logo
12:10 pm - 9:44 pmOPO-PWM
38h 34m2 stops
$920United Airlines
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Mon, Sep 15 - Thu, Sep 25
United Airlines Logo
2:14 pm - 9:45 amPWM-OPO
14h 31m2 stops
United Airlines Logo
12:10 pm - 9:44 pmOPO-PWM
38h 34m2 stops
$924United Airlines
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Mon, Jul 28 - Mon, Aug 4
United Airlines Logo
6:01 am - 9:20 amPWM-LIS
22h 19m2 stops
United Airlines Logo
6:15 am - 7:27 pmLIS-PWM
42h 12m2 stops
$1,036United Airlines
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Wed, Sep 10 - Tue, Sep 16
American Airlines Logo
6:00 am - 9:05 amPWM-LIS
22h 05m1 stop
American Airlines Logo
6:35 am - 10:43 pmLIS-PWM
21h 08m2 stops
$1,090American Airlines
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Fri, Jul 11 - Fri, Jul 18
Austrian Airlines Logo
10:48 am - 4:05 pmPWM-LIS
24h 17m2 stops
Austrian Airlines Logo
8:10 am - 5:53 pmLIS-PWM
38h 43m2 stops
$3,157Austrian Airlines
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Useful Info

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 ($612) and Air Canada ($617).

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Good to know

Low seasonFebruary
High seasonApril
Cheapest flight$420
Best time to beat the crowds with an average 9% drop in price.
Most popular time to fly with an average 15% increase in price.
Flight from Portland to Ponta Delgada

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.

  • What is the cheapest time of day to fly to Portugal?

    The cheapest time of day to fly to Portugal is generally at night, when round-trip flights cost $722 on average. Morning departures are around 19% cheaper than evening flights, on average. The most expensive time of day to fly to Portugal is generally in the evening, which is peak travel time and where the average cost of a ticket is $1,096.

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 8798 reviews
7.7Boarding
7.3Comfort
8.1Crew
7.0Entertainment
6.6Food
Airline reviews

United airlines, mediocre at best. No issues , nothing great . Worked for me

4.0 OkayAnonymous, Jun 2025CLT - IAD
Read more United Airlines reviews

United airlines, mediocre at best. No issues , nothing great . Worked for me

Boarding experience was smooth. Flight attendants were friendly and helpful. Entertainment system on the Houston-Edmonton flight did not function for passengers on the left side of the aisle. On the bird's eye flight from Quito to Houston, they should not serve a meal. No one needs to eat after midnight and it is disturbing for those passengers trying to sleep.

it was so bad. I tried to board my flight from vancouver to saskatoon. And to my surprise they did not board me cause the flight was changed and no email was send to me. and on my boarding pass which i got from seattle says different flight. I did not knew anyone from Vancouver, air canada crew was rude, i asked for today flight but they were rude and i had early morning dental appointment in saskatoon. I was so much in pain and my whole day is wasted today. and i suffered alot. They did provide me hotel but they did not provide me any food. I am really really disappointed first time had so bad experience with air canada. I may think twice to book it again. If i can get any reply or any composition that would be great. Thanks

It was fine, definitely older planes with no charging or anything. There’s no entertainment set up on board, but it is nice that they allow you to access the in flight entertainment from your phone without having to pay for the Wi-Fi and they do offer free texting.

Terrible. Out flight was delayed for 21 (twenty one) hours. United is a joke.

Boarding was mayhem. Late boarding by 15 minutes because of lack of staff (missing 1 flight attendant. We had to wait for an arrival of another plane before we could board). Flight was a little rough, but cannot blame on airlines.

Impressed with the service despite turbulence because of the weather. Both flights arrived before their scheduled times.

Very comfortable (upgraded to business class). The audio on my screen didn’t work, but I managed to play the audio through my phone while watching the screen.

The food was the worst I’ve had on any flight I’ve ever been on.

Great experience…left a bit behind schedule but made up fir that in the air and landed 10 minutes early 😁

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

Information on your arrival and departure airports

Portland (PWM)

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