$351 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 3/23. 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$491
Porto
Porto2 stops$569
Ponta Delgada
Ponta Delgada2 stops$1,097
Lisbon
Lisbon2 stops$491
Porto
Porto2 stops$569
Ponta Delgada
Ponta Delgada2 stops$1,097

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

Tue, Apr 7 - Tue, Apr 14
United Airlines Logo
6:18 pm - 9:20 am
PWM
-
LIS
34h 02m
2 stops
United Airlines Logo
11:25 am - 9:40 pm
LIS
-
PWM
39h 15m
2 stops
$491United Airlines
Mon, Apr 13 - Wed, May 6
Delta Logo
2:51 pm - 8:00 am
PWM
-
LIS
12h 09m
1 stop
Delta Logo
5:00 am - 12:46 am
LIS
-
PWM
24h 46m
2 stops
$568Delta
Mon, Apr 13 - Thu, May 7
Delta Logo
2:51 pm - 8:00 am
PWM
-
LIS
12h 09m
1 stop
Delta Logo
11:55 am - 12:43 am
LIS
-
PWM
17h 48m
2 stops
$569Delta
Tue, Apr 14 - Fri, May 8
Delta Logo
5:26 pm - 10:15 pm
PWM
-
OPO
23h 49m
2 stops
Delta Logo
5:00 am - 12:43 am
OPO
-
PWM
24h 43m
2 stops
$569Delta
Tue, Apr 14 - Wed, May 6
Delta Logo
5:26 pm - 6:20 pm
PWM
-
OPO
19h 54m
2 stops
Delta Logo
11:45 am - 12:46 am
OPO
-
PWM
18h 01m
2 stops
$570Delta
Mon, Apr 13 - Wed, Apr 29
Delta Logo
2:51 pm - 8:00 am
PWM
-
LIS
12h 09m
1 stop
Delta Logo
5:35 am - 11:24 pm
LIS
-
PWM
22h 49m
2 stops
$575Delta
Mon, Apr 13 - Tue, Apr 28
United Airlines Logo
10:00 am - 11:15 am
PWM
-
OPO
20h 15m
2 stops
United Airlines Logo
6:00 am - 9:40 pm
OPO
-
PWM
20h 40m
2 stops
$579United Airlines
Mon, Apr 13 - Tue, May 5
Delta Logo
2:51 pm - 8:00 am
PWM
-
LIS
12h 09m
1 stop
Delta Logo
10:00 am - 11:24 pm
LIS
-
PWM
18h 24m
1 stop
$579Delta
Mon, Apr 13 - Tue, May 5
United Airlines Logo
10:00 am - 11:15 am
PWM
-
OPO
20h 15m
2 stops
United Airlines Logo
6:00 am - 2:49 pm
OPO
-
PWM
37h 49m
2 stops
$584United Airlines
Mon, Mar 23 - Mon, Mar 30
Multiple Airlines Logo
4:39 pm - 6:15 am
PWM
-
PDL
34h 36m
2 stops
Multiple Airlines Logo
6:05 pm - 11:56 pm
PDL
-
PWM
33h 51m
2 stops
$1,097Multiple Airlines
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 ($569) and United Airlines ($579).

Find deals

Good to know

Low seasonFebruary
Cheapest flight$351
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 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 9345 reviews
7.7Boarding
7.1Entertainment
6.6Food
8.1Crew
7.3Comfort
Airline reviews

Flight left on time and we arrived 25 minutes early! There was a gate available when we arrived so early on a busy Sunday afternoon! Flight attendants came around twice with the drinks cart.

10.0 ExcellentAnonymous, Feb 2026
DEN - RSW
Read more United Airlines reviews

Flight left on time and we arrived 25 minutes early! There was a gate available when we arrived so early on a busy Sunday afternoon! Flight attendants came around twice with the drinks cart.

Wonderful. Quick boarding. Early departure and we arrived 30 minutes early at our destination. Unfortunately, when you arrive early, there is still a departing aircraft at our gate. We had to park for 30 minutes until the gate was clear. So our early arrival was not really early at the gate. Otherwise it was a quick and smooth flight. Appreciated the efficiency.

Flight on time. Excellent service in Premium Economy. Great food served and cleaned up promptly. Unfortunately the climate control was malfunctioning and it was very cold and felt a bit like camping. Cold helps with sleep though so not complaining too much. Slept well. It asks to rate "entertainment". I do not like any IFE, don't shove a big screen in my face—I have my own phone if I want it. So this will always get low ratings.

We had turbulence ever 1/2 hr or so and the captains announcements were SOOOO LOUD

Everything was great except for the boarding process. Everyone is lining up all at the same time and it’s hard to tell between the groups as they are way too large.

Women boarding passengers at the gate was absolutely rude and disrespectful of passengers. The flight attendant was absolutely delightful! Smiling and connected with the passengers. So happy. The seats are cramped and uncomfortable but I guess that’s just the way it is Communication regarding flight was excellent

Overall we had a good experience during our flight from San Francisco to Houston.

Airport terminal was outdated, flight was on a small jet with no wifi

We were delayed for about an hour from taking off due to traffic control procedures at the destination airport. But once in the air, the flight went well. The crew members were great and provided cabin service despite moderate turbulence during much of the flight.

it was a very short flight so my expectations were low.

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

Information on your arrival and departure airports

Portland (PWM)