$533 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 4/29. 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$679
Porto
Porto2 stops$763
Ponta Delgada
Ponta Delgada1 stop$1,041
Lisbon
Lisbon2 stops$679
Porto
Porto2 stops$763
Ponta Delgada
Ponta Delgada1 stop$1,041

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
Delta Logo
2:51 pm - 2:55 pm
PWM
-
LIS
19h 04m
2 stops
Delta Logo
5:00 am - 12:46 am
LIS
-
PWM
24h 46m
2 stops
$720Delta
Wed, Apr 29 - Mon, May 4
KLM Logo
2:51 pm - 10:55 am
PWM
-
LIS
15h 04m
2 stops
KLM Logo
5:00 am - 12:46 am
LIS
-
PWM
24h 46m
2 stops
$725KLM
Tue, Apr 7 - Fri, Apr 17
Multiple Airlines Logo
3:02 pm - 2:30 pm
PWM
-
LIS
18h 28m
2 stops
Multiple Airlines Logo
7:20 am - 11:27 pm
LIS
-
PWM
21h 07m
2 stops
$737Multiple Airlines
Wed, Apr 8 - Thu, Apr 16
Turkish Airlines Logo
6:00 am - 3:45 pm
PWM
-
OPO
52h 45m
2 stops
Turkish Airlines Logo
4:40 pm - 10:59 pm
OPO
-
PWM
35h 19m
2 stops
$763Turkish Airlines
Wed, Apr 29 - Mon, May 4
Turkish Airlines Logo
7:28 am - 3:45 pm
PWM
-
LIS
51h 17m
2 stops
Turkish Airlines Logo
5:55 am - 11:03 pm
LIS
-
PWM
46h 08m
2 stops
$764Turkish Airlines
Wed, Apr 8 - Thu, Apr 16
American Airlines Logo
7:23 pm - 5:55 pm
PWM
-
LIS
17h 32m
2 stops
American Airlines Logo
11:05 am - 11:27 pm
LIS
-
PWM
17h 22m
1 stop
$766American Airlines
Wed, Apr 8 - Thu, Apr 16
American Airlines Logo
6:00 am - 9:05 am
PWM
-
LIS
22h 05m
1 stop
American Airlines Logo
11:05 am - 11:27 pm
LIS
-
PWM
17h 22m
1 stop
$775American Airlines
Wed, Aug 19 - Sat, Sep 5
United Airlines Logo
3:44 pm - 6:55 am
PWM
-
OPO
10h 11m
1 stop
United Airlines Logo
10:15 am - 1:54 pm
OPO
-
PWM
32h 39m
2 stops
$878United Airlines
Wed, Aug 19 - Sat, Sep 5
United Airlines Logo
5:15 am - 7:00 am
PWM
-
OPO
20h 45m
2 stops
United Airlines Logo
10:15 am - 1:54 pm
OPO
-
PWM
32h 39m
2 stops
$882United Airlines
Mon, May 25 - Tue, Jun 9
Multiple Airlines Logo
6:00 am - 11:40 am
PWM
-
OPO
24h 40m
2 stops
Multiple Airlines Logo
7:35 pm - 1:29 pm
OPO
-
PWM
46h 54m
2 stops
$973Multiple 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 American Airlines ($679) and Delta ($720).

Good to know

Low seasonFebruary
Cheapest flight$533
Best time to beat the crowds with an average 29% drop in price.
Most popular time to fly and prices are also 44% 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 9499 reviews
7.3Comfort
7.7Boarding
6.6Food
8.1Crew
7.1Entertainment
Airline reviews

the entire flight felt off. The crew seemed uninterested and disengaged. The food service was really bad - overcooked, bland, weird food service. They actually woke us up to serve chicken wraps in the middle of the night, after dinner and before breakfast. Made no sense. Ultimately, I was glad they did though, because the breakfast had been held for so long it was inedible. Eggs, potatoes, sausage - all disgusting. We were asked to "honor" the lavatories for premium customers and stay in our own cabin: this was also strange. So people in economy didn't pay enough to use the closest toilet to them??? It's a toilet. All in all, not the experience I have come to expect from United Airlines. The return flight from Paris to SFO was better, btw.

4.0 OkayRoberta, Mar 2026
SFO - CDG
Read more United Airlines reviews

the entire flight felt off. The crew seemed uninterested and disengaged. The food service was really bad - overcooked, bland, weird food service. They actually woke us up to serve chicken wraps in the middle of the night, after dinner and before breakfast. Made no sense. Ultimately, I was glad they did though, because the breakfast had been held for so long it was inedible. Eggs, potatoes, sausage - all disgusting. We were asked to "honor" the lavatories for premium customers and stay in our own cabin: this was also strange. So people in economy didn't pay enough to use the closest toilet to them??? It's a toilet. All in all, not the experience I have come to expect from United Airlines. The return flight from Paris to SFO was better, btw.

Smooth and easy boarding, comfortable for the entire 5 hour flight, and the seat back entertainment was great! I appreciated all the features, from location info and maps, movies, the ability to connect with Bluetooth headphones, and good selection of movies. Food was good, normal airline snacks (I didn’t purchase anything)

Overall, the flight was good. Lounge access should be with all business class tickets.

They promise free wi-fi prior to boarding and then once on board you are informed you have to purchase wifi even after being a mileagePlus member.

I've been flying American mostly, and it's been very frustrating. This united flight makes me realize maybe the issue isn't flying, but the airline. United was a significantly better experience. The plane was more comfortable, with a normal amount of leg room (vs the ridiculous reductions AA has made), more comfortable seats, screens to watch movies. It was a much better experience!

Awful. No counter attendants. No dinner offered due to delays.

Horrible service no Wi-Fi connection on both leg of the flight and they are refusing to fix bad service

3 hour delay…. Nearly 2 hours sitting on tarmac. Do better, United. Or at least have the sense to not say “we hope you enjoyed your flight with us” upon disembarking.

Flights were on time. Free Wifi on plane. Everything was well organized.

During landing. 2 crew members passed 3 times by my lane and didn't notice that people in front of us had their site to the furthermore reclined... That was uncomfortable and could have been dangerous.

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

Information on your arrival and departure airports