$317 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 12/6. 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.
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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
Lisbon1 stop$370
Porto
Porto2 stops$482
Ponta Delgada
Ponta Delgada3 stops$1,002
Faro
Faro1 stop$548
Funchal
Funchal1 stop$492
Lisbon
Lisbon1 stop$370
Porto
Porto2 stops$482
Ponta Delgada
Ponta Delgada3 stops$1,002
Faro
Faro1 stop$548
Funchal
Funchal1 stop$492

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

Sat, Dec 6 - Sun, Dec 14
Icelandair Logo
2:45 pm - 8:20 pmPDX-LIS
21h 35m1 stop
Icelandair Logo
9:20 pm - 5:00 pmLIS-PDX
27h 40m1 stop
$370Icelandair
Find Deal
Mon, Jan 5 - Tue, Jan 20
Air Canada Logo
9:50 am - 9:20 amPDX-LIS
39h 30m2 stops
Air Canada Logo
11:20 am - 2:40 pmLIS-PDX
35h 20m2 stops
$463Air Canada
Find Deal
Fri, Jan 30 - Mon, Feb 9
Multiple Airlines Logo
9:50 am - 10:50 pmPDX-LIS
29h 00m2 stops
Multiple Airlines Logo
5:00 am - 6:30 pmLIS-PDX
21h 30m2 stops
$477Multiple Airlines
Find Deal
Wed, Jan 21 - Sun, Jan 25
Delta Logo
7:00 am - 10:30 amPDX-OPO
19h 30m2 stops
Delta Logo
5:00 am - 11:25 amOPO-PDX
14h 25m1 stop
$482Delta
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Wed, Jan 21 - Sun, Jan 25
Delta Logo
1:25 pm - 10:30 amPDX-OPO
13h 05m1 stop
Delta Logo
5:00 am - 11:25 amOPO-PDX
14h 25m1 stop
$483Delta
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Fri, Jan 23 - Mon, Jan 26
KLM Logo
1:25 pm - 4:55 pmPDX-FAO
19h 30m1 stop
KLM Logo
7:15 pm - 7:13 pmFAO-PDX
31h 58m2 stops
$548KLM
Find Deal
Fri, Jan 23 - Mon, Jan 26
KLM Logo
7:00 am - 4:55 pmPDX-FAO
25h 55m2 stops
KLM Logo
7:15 pm - 7:13 pmFAO-PDX
31h 58m2 stops
$552KLM
Find Deal
Thu, Feb 26 - Thu, Mar 12
United Airlines Logo
5:05 am - 9:30 amPDX-OPO
20h 25m2 stops
United Airlines Logo
12:35 pm - 9:52 pmOPO-PDX
16h 17m1 stop
$595United Airlines
Find Deal
Wed, Feb 25 - Thu, Mar 5
United Airlines Logo
10:56 am - 9:30 amPDX-OPO
38h 34m3 stops
United Airlines Logo
12:35 pm - 9:54 amOPO-PDX
29h 19m2 stops
$609United Airlines
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Tue, May 12 - Mon, May 25
British Airways Logo
7:30 pm - 7:10 pmPDX-FAO
15h 40m1 stop
British Airways Logo
7:40 pm - 5:40 pmFAO-PDX
30h 00m1 stop
$932British Airways
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.

What is the cheapest month to fly from Portland to Portugal?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Portland to Portugal, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Portland to Portugal is November, when tickets cost $559 (return) on average. On the other hand, the most expensive months are June and July, when the average cost of round-trip tickets is $1,319 and $1,187 respectively.

What’s the cheapest day of the week to fly from Portland to Portugal?

The average price of all round-trip flights from Portland to Portugal clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to Portugal on a Wednesday and more expensive on a Thursday. On your return trip to Portland, you should consider flying back on a Wednesday, and avoid Fridays for better deals.

How far in advance should I book a flight from Portland to Portugal?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Portland to Portugal, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Portland to Portugal, you should book around 2 weeks before departure, which saves you about 37% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 8 weeks before departure.

Good to know

Low seasonFebruary
Cheapest flight$317
Best time to beat the crowds with an average 21% drop in price.
Most popular time to fly and prices are also 11% lower on average.
Flight from Portland to Lisbon

FAQs - booking Portugal flights

  • Do I need to get a visa for flights from Portland to Portugal?

    American citizens who will be taking flights from Portland to Portugal won't need to be worried about obtaining visas first. As long as you won't remain in Portugal for over 90 days, you'll be able to enter the country with just a valid U.S. passport.

  • Are there any nonstop flights available for those traveling from Portland to Portugal?

    Nonstop flights from Portland to Portugal are nonexistent. But there are one-stop flights that will get you to Portugal relatively fast. Delta, for instance, has one-stop flights to Lisbon Humberto Delgado Airport that stops at John F. Kennedy International Airport (JFK), while KLM flies to Francisco Sá Carneiro Airport in Porto with a stopover at Amsterdam Airport Schiphol (AMS).

  • Where will airlines typically make stops on the way from Portland to Portugal?

    Airlines are usually going to take at least one stop during flights from Portland to Portugal, and sometimes they'll take two or even three stops before arriving at their final destinations. These stops might occur at airports like John F. Kennedy International Airport, Los Angeles International Airport (LAX), or London Heathrow Airport (LHR).

  • Which airline should I choose when flying from Portland to Portugal if I care about sustainability?

    Most airlines are making pushes to become carbon-neutral in the coming years, but few have put dramatic plans in place like American Airlines has. This airline is working on upgrading its fleet and all the equipment it uses in an attempt to push sustainability to the forefront.

  • 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 in the evening, when round-trip flights cost $622 on average. Morning departures are around 50% more expensive than evening flights, on average. The most expensive time of day to fly to Portugal is generally at night, which is peak travel time and where the average cost of a ticket is $981.

Top tips for finding cheap flights to Portugal

  • Before people catch flights from Portland to Portugal, they'll need to decide which airport in Portugal would be their best option. All flights between these two places will depart from Portland International Airport (PDX), but they won't all end up at the same airport. Many flights from PDX to Portugal will land at Francisco Sá Carneiro Airport (OPO) near Porto, but Humberto Delgado Airport (LIS) near Lisbon is another great option.
  • Many airlines can fly you from Portland International Airport (PDX) to one of the airports in Portugal. Your potential options will include American Airlines, British Airways, Delta, KLM, and United Airlines. Take advantage of the fact that so many airlines offer flights from Portland to Portugal and search for the cheapest ones.
  • It'll be important to arrive at Portland International Airport (PDX) at least 2 hours early for flights to Portugal. If you end up with free time on your hands, park yourself at one of the lounges like the Delta Sky Club, which is available to Delta passengers, or the United Club, which is open to United Airlines passengers.
  • If you can afford to fly first class on flights from Portland to Portugal, it’s worth the upgrade. You're going to spend more than enough time up in the air, so you deserve to kick back and relax in a large seat that you'll be able to fold down and use as a bed on some airlines. An airline like American Airlines will keep you comfortable by providing the ultimate luxury travel experience in the first class cabin.
  • Parents planning to take flights from Portland to Portugal might not be looking forward to spending a ton of time on planes with their kids. You'll be happy to hear that Delta will make the experience more pleasant than you thought it would be. This airline will supply your children with activity kits and movies to make sure they stay busy.

Reviews of the top 5 airlines serving 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.
7.9
DeltaOverall score based on 8007 reviews
7.9Entertainment
7.3Food
8.1Boarding
8.5Crew
7.9Comfort
Airline reviews

Our flight from SFO to MSP was right on time on 11/15/2025. No delays. As we approached MSP at about 8 pm, we circled in the air until 8:40 pm so I don't call that efficient for MSP. I think the captain should announce the delay and why. (as if we all don't know that we are just circling around the area, slowing down, speeding up, slowing down.) Thank you. Marilyn Fischer

8.0 ExcellentAnonymous, Nov 2025SFO - MSP
Read more Delta reviews

Our flight from SFO to MSP was right on time on 11/15/2025. No delays. As we approached MSP at about 8 pm, we circled in the air until 8:40 pm so I don't call that efficient for MSP. I think the captain should announce the delay and why. (as if we all don't know that we are just circling around the area, slowing down, speeding up, slowing down.) Thank you. Marilyn Fischer

Service in business class was not impressive. I ordered coffee with dinner and then watched other people get 2 refills before I got my 1 cup of coffee, and only after I pressed the attendant button overhead. Furthermore, the seats in the forward cabin need maintenance on this 737-800: the upholstery is detaching from the seat frame, at least on the backs of seats 1C, 1D.

Plenty of leg room, temperature was great and staff was excellent. Would do it more often.

The ticket agents in West Palm Beach on Friday afternoon Nov. 7th were incredible in getting us on an earlier plane to Atlanta during the government shutdown. Had the taken our original flight we would have missed our connection. She did this on her own, We didn't even have to ask, and she did it all with a smile and showing genuine concern that we would be taken care of. We are very grateful and thankful. We fly often, and now we will be sure to fly Delta.

Flight delayed then cancelled. Misplaced luggage. Still do not have. Rented car 1100 mile drive. I had to buy some overnight Hotels clothes toiletries gas food at my expense. Still not home. Not sure where luggage is. Over 4 hours on hold to Felta

I truly love flying with Delta. They have always treated me with the upmost respect

Our flight attendant in FIRST CLASS was one of the worst I’ve ever had. She was not at all pleasant, nor particularly good at her service.

Everything went well and was good. Nothing exceptional, but no complaints either. Cheap seats are pretty comfortable.

Staff were friendly and happy. Delta could make sure passengers that don't have the app know of changes. Without Kayak I would not have known about the change of gate or the delay. Kayak was faster to notify me.

They ended up paying for the bag twice, but the counter wouldn't take my baggage receipt. Left it to me to resolve. Not sure how to resolve the issue.

At the airport, terrible, I do not want to even remember it. It was too humiliating for a business class passenger.

Flight was ok but lack of communication cost me to literally beg to be put on another flight as connecting flight had departed

They forgot to serve food and the crew was very unfriendly. Never experienced such a bad KLM flight. Usually fly from Toronto. New York was different.

The immigration hall in Amsterdam was understaffed, so passport checking was slower than it should be for a major airport. They need to get the automatic readers up and running for non EU passport holders. Waiting in line after a long flight feels a bit abusive.

Over 1 Hr delay. No APU so no AC on ground. Plane was hot during boarding and then they closed the doors over 20 minutes before engine start so interior of plane was steamy hot and stuffy. Could have been helped by opening doors until ready to depart.

First of all we couldn’t check in online, then we learn at the airport we were on stand by for KLM’s mistake of overbooking. The seats were not comfy at all. Our luggage got lost.

KLM remains a quality flag carrier airline which maintains its standards whilst all their competitors are lowering theirs.

Our first flight was delayed so we missed our connecting flight. However it was easy to book a later flight on their app.

My flight was delayed by 6 hours then I missed BOTH of my connecting flights, I then had to stay in the AIRPORT at JFK because soooooo many people also suffered from missing flights and there was no hotels available. I would like to be compensated for this experience! I had to stay in the airport for over 16 hours!

The service was great. However the lounge only gets passing grade

Even though we were delayed, we were able to make our connection

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?

Over 40 years ago my AC return flight was canceled, during this last summer the same thing happened. AC denied everything Canadian like paying for accommodations and basic necessities. So why would I ever want to fly AC again? This last flight my wife took the return flight had problems and left late, so I guess they are getting better. However I have no faith in this airline so I drove to this last destination! I'll never fly AC again!!!

Great check in process in LA and good service The check in process as well as at the gate is way better in the US versus canada 🇨🇦

Super experience. Earlier than schedule departure and arrival. Baggage handling was very good

Allow me to book extra bag check in as free though I packed in 1 luggage but that was 7 LBS overweight so make another bag to free check in.

I would like to get my money back. I flight was 4 hours late on the way to detroit, And same on my way back to Brussels they cancelled my flight and give me an other ticket and i had to wait 5 hours.

All attendents were very efficient, pleasant and happy. Everything went smoothly. The seats could have been wider. There could have been more free food instead of just one small bar.

My seat was one of those that couldn't recline, but the problem was that it was abnormally upright, so the headrest actually made the seat concave, which was uncomfortable and hard on my lower back. I had to ball my jacket up and use it as lumbar support. goodness I had it with me.

Boarding was so so after zone 3 was called all other zones went in

I liked a lot , the flight attendant so nice ,the seat very comfortable I enjoyed the flight , I will do it again with Air Canada,

Plane left an hour late, I missed my connection and my bow case was never even loaded on the plane in VA. I deal with this type of nonsense everytime I fly air canada.

I was attacked in the Miami airport and the staff did nothing. On my flight from London to Miami one of the flight attendants screamed at me and demanded I keep my seat in the upright position at all times during the fight so the man behind me was comfortable for the flight. I will never in my life use British airways again

Airlines have to stop assuming passengers bring entertainment. Provide it like you used to in business class and above!! N

I don't know about the others but the flight attendant that took care of us had the absolute wrong approach "how do we dare asking for water or anything else for that matter"

Flying on the Boeing 787 from Seattle to London was everything that I expected. Every thing was great.

Not my definition of first class. No leg room and barely any recline. The food was good. The crew was great. The comfort for the price I paid for London to Cairo was highway robbery. The Wi-Fi didn't work for me either.

Seat pitch is not enough to eat comfortably. When seat in front is reclined, your screen comes closer to your face. Ryanair seats are actually more comfortable.

Horrible leg room - coach seating with empty seat in middle on a 3 across seating. You buy business class for comfort which includes leg room. Absolutely no entertainment options either. Awful experience

The leg from Portland to Heathrow was great for a business class ticket. The BA leg from Heathrow to Lisbon was terrible. Basically coach seating with an empty seat between you and next passenger. Absolutely no leg room. Should not have been charged for business class and it was a 3 hour flight.

The flat beds. Other than that, the place was not clean.

Moved me away from my family and refused to fix it.

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

Information on your arrival and departure airports