$337 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 1/30. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Portugal

Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 24% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Portland to Portugal

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Lisbon
Lisbon1 stop$501
Porto
Porto2 stops$492
Ponta Delgada
Ponta Delgada2 stops$1,066
Lisbon
Lisbon1 stop$501
Porto
Porto2 stops$492
Ponta Delgada
Ponta Delgada2 stops$1,066

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 18 - Thu, Feb 26
Delta Logo
2:35 pm - 10:30 amPWM-OPO
14h 55m2 stops
Delta Logo
11:15 am - 11:04 pmOPO-PWM
40h 49m2 stops
$492Delta
Find Deal
Tue, Feb 17 - Thu, Feb 26
Delta Logo
12:15 pm - 10:30 amPWM-OPO
41h 15m2 stops
Delta Logo
11:15 am - 11:04 pmOPO-PWM
40h 49m2 stops
$493Delta
Find Deal
Sun, Feb 15 - Thu, Feb 26
Delta Logo
6:30 am - 10:30 amPWM-OPO
23h 00m2 stops
Delta Logo
11:15 am - 11:04 pmOPO-PWM
40h 49m2 stops
$498Delta
Find Deal
Thu, Jan 15 - Mon, Jan 19
KLM Logo
6:17 am - 8:00 amPWM-LIS
20h 43m1 stop
KLM Logo
11:25 am - 12:20 amLIS-PWM
17h 55m2 stops
$501KLM
Find Deal
Thu, Jan 15 - Mon, Jan 19
KLM Logo
2:35 pm - 2:35 pmPWM-LIS
19h 00m2 stops
KLM Logo
11:25 am - 12:20 amLIS-PWM
17h 55m2 stops
$505KLM
Find Deal
Wed, Dec 10 - Wed, Dec 17
Multiple Airlines Logo
2:34 pm - 8:40 amPWM-LIS
13h 06m1 stop
Multiple Airlines Logo
11:15 am - 12:04 amLIS-PWM
17h 49m2 stops
$510Multiple Airlines
Find Deal
Wed, Dec 10 - Wed, Dec 17
American Airlines Logo
5:46 am - 6:55 amPWM-LIS
20h 09m2 stops
American Airlines Logo
11:05 am - 11:37 pmLIS-PWM
17h 32m2 stops
$553American Airlines
Find Deal
Thu, Jan 8 - Thu, Jan 15
United Airlines Logo
6:00 am - 9:20 amPWM-LIS
22h 20m2 stops
United Airlines Logo
5:00 am - 6:50 pmLIS-PWM
18h 50m2 stops
$574United Airlines
Find Deal
Thu, Jan 8 - Thu, Jan 15
United Airlines Logo
3:12 pm - 8:10 amPWM-LIS
11h 58m1 stop
United Airlines Logo
5:00 am - 6:50 pmLIS-PWM
18h 50m2 stops
$575United Airlines
Find Deal
Sat, Dec 13 - Sat, Dec 20
Multiple Airlines Logo
6:00 am - 8:25 amPWM-PDL
22h 25m2 stops
Multiple Airlines Logo
6:30 am - 11:22 pmPDL-PWM
20h 52m2 stops
$1,660Multiple Airlines
Find Deal
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 fly non-stop between Portland and Portugal?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for round-trip flights from Portland to Portugal.

There is just one airline that flies from Portland to Portugal direct and that is United Airlines. The best round-trip deal found from United Airlines for the route is to Lisbon (LIS) and costs $578.

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 ($492) and KLM ($501).

Find deals

Good to know

Low seasonFebruary
Cheapest flight$337
Best time to beat the crowds with an average 39% drop in price.
Most popular time to fly and prices are also 32% 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.

  • 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.

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 9017 reviews
6.6Food
7.1Entertainment
8.1Crew
7.7Boarding
7.3Comfort
Airline reviews

Seats in waiting area and on plane hard as rock. Fast internet on the flight was great! Crew was kind.

10.0 ExcellentClaire, Nov 2025ORD - YOW
Read more United Airlines reviews

Seats in waiting area and on plane hard as rock. Fast internet on the flight was great! Crew was kind.

Starlink wifi on the Embraer E175 is an excellent experience. I was able to connect and work from IAD all the way to approach into BTV.

Older aircraft, no meal, only food was for purchase. Not impressed United.

United needs to step up their game. Delayed flight leaving Seattle, San Francisco. Older aircraft, not very comfortable.

Always wish for more healthy, gluten free options. We have to bring our own.

Having a long layover, I was very appreciative of the ability to stand by for an earlier flight. Other airlines like Delta have refused this to me in the past, just to be mean (because my ticket class wasn't high enough). United went out of their way to help me get to my destination early, which I really appreciated given that it was the third leg of a 24+ hour journey for me.

Other than a way way too cold cabinets for the entire flight, all was great

One bag is incorrect and not acceptable for an international flight. The food was not just good. I won't fly with them again.

Not pleasant trip cross country when the entertainment and WiFi system not working. No entertainment for entirety of route. Staff was rather nonchalant in that they dismissed the problem due to age of plane. It would have been nice to know this up front so I could have come prepared to read or download movies before boarding Coincidentally or not, there was a similar issue with the entertainment system on my previous flight I took on my fist leg of the trip. There are no seat TVs, so you must rely on the app when it works. United can do better. Also, what use it it to pay for boarding group 2 when half of the passengers are in the same line as you?

Plane boarded early a quickly, was mostly full. We left close to on time. And landed early.

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

Information on your arrival and departure airports

Portland (PWM)