$245 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 4/27. 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$509
Porto
Porto1 stop$683
Faro
Faro1 stop$586
Ponta Delgada
Ponta Delgada1 stop$897
Funchal
Funchal2 stops$741
Lisbon
Lisbon2 stops$509
Porto
Porto1 stop$683
Faro
Faro1 stop$586
Ponta Delgada
Ponta Delgada1 stop$897
Funchal
Funchal2 stops$741

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

Mon, Apr 20 - Mon, Apr 27
United Airlines Logo
11:15 pm - 9:20 am
PDX
-
LIS
26h 05m
2 stops
United Airlines Logo
5:05 am - 10:34 pm
LIS
-
PDX
25h 29m
2 stops
$509United Airlines
Sun, Apr 19 - Mon, Apr 27
British Airways Logo
1:52 pm - 11:05 pm
PDX
-
LIS
25h 13m
2 stops
British Airways Logo
6:45 pm - 10:56 pm
LIS
-
PDX
36h 11m
2 stops
$511British Airways
Sun, Apr 26 - Wed, May 6
Multiple Airlines Logo
7:30 pm - 11:05 pm
PDX
-
LIS
19h 35m
1 stop
Multiple Airlines Logo
6:35 am - 9:38 pm
LIS
-
PDX
23h 03m
2 stops
$514Multiple Airlines
Sun, Apr 26 - Thu, May 7
Finnair Logo
6:22 am - 11:25 pm
PDX
-
LIS
33h 03m
2 stops
Finnair Logo
4:35 pm - 9:38 pm
LIS
-
PDX
37h 03m
2 stops
$525Finnair
Tue, Apr 14 - Tue, Apr 21
British Airways Logo
7:30 pm - 11:00 pm
PDX
-
LIS
19h 30m
1 stop
British Airways Logo
7:10 am - 5:40 pm
LIS
-
PDX
18h 30m
1 stop
$526British Airways
Sun, Apr 19 - Mon, Apr 27
Finnair Logo
6:22 am - 11:25 pm
PDX
-
LIS
33h 03m
2 stops
Finnair Logo
6:35 am - 10:56 pm
LIS
-
PDX
24h 21m
2 stops
$528Finnair
Mon, Apr 6 - Wed, Apr 22
KLM Logo
1:05 pm - 7:20 am
PDX
-
FAO
34h 15m
1 stop
KLM Logo
5:40 pm - 11:10 am
FAO
-
PDX
25h 30m
1 stop
$586KLM
Mon, Apr 6 - Wed, Apr 22
KLM Logo
1:05 pm - 7:25 pm
PDX
-
FAO
22h 20m
1 stop
KLM Logo
8:10 am - 9:32 pm
FAO
-
PDX
21h 22m
2 stops
$596KLM
Mon, Apr 20 - Mon, Apr 27
Delta Logo
1:32 pm - 10:00 pm
PDX
-
OPO
24h 28m
2 stops
Delta Logo
11:25 am - 11:10 am
OPO
-
PDX
31h 45m
1 stop
$702Delta
Sun, Apr 12 - Mon, Apr 27
Delta Logo
8:05 pm - 10:00 pm
PDX
-
OPO
41h 55m
2 stops
Delta Logo
11:25 am - 11:10 am
OPO
-
PDX
31h 45m
1 stop
$705Delta
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 $557 (return) on average. On the other hand, the most expensive months are June and May, when the average cost of round-trip tickets is $1,319 and $1,079 respectively.

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 44% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 10 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$245
Best time to beat the crowds with an average 39% drop in price.
Most popular time to fly and prices are also 18% lower on average.
Flight from Portland to Porto

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.

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 8244 reviews
8.1Boarding
7.8Entertainment
7.9Comfort
8.5Crew
7.2Food
Airline reviews

I was happy that I was able to get a last minute flight but unfortunately my seat was a middle seat. Even with Delta Comfort I wasn't comfortable

8.0 ExcellentSheila, Mar 2026
ATL - EWR
Read more Delta reviews

I was happy that I was able to get a last minute flight but unfortunately my seat was a middle seat. Even with Delta Comfort I wasn't comfortable

There’s not much to say about a one hour flight. This is a connection from LA to RNO that I missed the previous night due to a mechanical check delay on my originating flight from JFK to LAX. The short flight itself was fine. Instructions from the pilot and crew were per usual. The coffee was barely lukewarm, which possibly was purposeful so we would down it quickly. Bags were already on carousel upon reaching baggage claim, which was excellent.

Flight was warm for first few hours and quite rough

Seat was extremely hard which made even a short 1 hour 20 minute flight fairly uncomfortable.

Everything was good except wifi and a leaking drink chiller. The floor was all wet and my bag was soaked. Did not notice until debarking. Have not heard back from Delta. Even though this was leg one of an international flight in first class, they denied access to their Sky Club - very disappointing!

The staff was fine. The plane was extremely tight, and I paid for the wifi and it did not work at all. I was actually going to ask for a refund.

two hour delay and the Delta representative on the PA system was unable to understand

An awesome flight crew. FC seat cushion just doesn’t cut it for a 3+ hour flight.

2+hrs delay without any reason provided and a cramped flight

We waited an hour on the runway to get a gate in Orlando

Crew is not the cheerful type. very slow meal service (this is their style as have flown this many times)

Empty seats next to me - wish it had been for a longer flight!!

Flight was on time, staff are friendly and helpful onboard.

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

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.

Good flight. Efficient boarding and competent flight crew. No problems until we arrived at our destination gate. We were early so there was an aircraft at the gate that had to move before we could pull in. Then, due to the type of aircraft we flew, the cabin door could not be opened until some luggage from the cargo bay was offloaded to preserve center of gravity characteristics. So, that further delayed deplaning. Despite being 20 minutes early on landing, we ended up being 5 to 10 minutes late after all the delays.

Everything went well except the turbulence what no one have a control of but pilot and crew handled very good!

There was no WiFi available, there were mechanical problems with the plane and we landed at C 124, then the gate was switched to A 26, then all the way back to C126! For a 75 yo woman traveling alone, this was a difficult journey, indeed!

This trip did not start off well. The inbound flight was delayed about 20 minutes. Then, after initial onboarding, the passengers had to deplane due to a mechanical problem. That took about 30 minutes to fix and be cleared. Then, reboarding was chaotic. It took a long time to sort passengers and two passengers on standby were ticketed but there was no seat. So, they had to deplane. One of the flight crew was trying to help passengers figure out a place to put their carry-on bags and that took more time. In the end, our scheduled 10:30 am departure did not actually take off until about 12:05 pm CST. The flight itself was long but we got to Houston. Some passengers missed their connecting flights and had to rebook. Not the best of flights I've had.

Staff were good. My seat was in need of repair, but for a short flight was not problematic. Usual basic snack and drink setup that you'll find on any US carrier. Over, a decent, basic flight.

Complimentary light meal would be appreciated. But great flight crew service on all legs

Terrible because it was cancelled due to volcanic ash clouds in Guatemala while all other airlines kept flying. Had to pay for a hotel to stay overnight in Houston and try to fly next day.

Flight delayed for more than 16 hrs and no effort was spent to provide an alternate

We got delayed three hours and nobody thought to have the bathroom fixed while we were sitting waiting to board? took a full hour to have maintenance come and check it off. Had to shut the bathroom down twice so that the pilots could go to the bathroom. Everyone missed their connections.

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.

Flight was canceled due to mechanical issues. After a considerable wait in the queue, Air Canada customer service was very helpful to get us on another flight. I am disappointed to report our rescheduled flight is for three days from now. Three days of extra expenses and inconvenience is unacceptable.

Extremely disappointing. My original Denver–Vancouver–Bangkok itinerary was cancelled due to a crewing issue. I was not proactively supported and had to drive back home after already reaching the airport. Communication was poor throughout, and attempts to contact customer service resulted in being on hold for nearly three hours without reaching anyone. Instead of being rebooked on the same direct routing the following day, I was rerouted onto a much longer itinerary via multiple cities and airlines, which resulted in arriving approximately 30 hours later than scheduled. At Denver airport, there was no visible Air Canada representative available to properly assist. Ground staff offered no real support beyond directing passengers to a phone number. There was no clear communication, no ownership, and no meaningful customer care during a major disruption. The final journey involved three flights instead of the original two, significantly increasing travel time and stress. Overall, the handling of the cancellation and lack of customer support was unacceptable. What could have been better? Clear communication during the cancellation Accessible customer service (phone support that actually answers) Proper in-person assistance at the airport Rebooking onto a comparable routing rather than a significantly longer one

Great setup on both flights except the last flight we got condensed dripping all over me in the last 20 mins of the flight

The last 3 hours it was freezing cold in row 56. Multiple people had their winter coats on and were utilizing the blankets provided by the airline. I also did not have easy access to figure out how to book my food allergy and advance for my meals. Most of everything I received was something I couldn't eat. This needs to be made more accessible. Also, I'm 5'10 which is the average height of the American male. I flew from Philadelphia to Toronto and then to Tokyo and the seats were absolutely unbearable. For that long of a flight it is impossible to get comfortable when doing anything. Flights need to have more space and stop prioritizing costs over people.

Again, we were rerouted all the way to Zurich and had a longer journey than expected.

Was delayed at every point/ connection. Luggages missing for 5days. Had no medications for diabetes and high B/p. when bags where finally delivered on the 30th, the insulin and ozempic were no longer patent, as the ice pack had since dissolved and the authenticity of the med is now questionable, since they must be refrigerated. Please have them refund my bag fees. I should sue them for all the inconveniences caused to me.

The plane was delayed substantially due to a mechanical problem, that being said, the airline was very fair with providing a meal coupon for us. I would rather arrive late on a mechanically sound plane than the alternative. The food served in the plane was just awful, however and I recommend a new catering company.

I waiting for 2 hrs to retrieve my luggage. Didn't get home till 3am.

The flight left late and I didn’t get a glass of bubbly upon boarding (which I’m used to when booking business class on other flights), but otherwise it was a pleasant flight with lovely, helpful crew members and I enjoyed my meal.

Flight cancellations, delays, mass confusion and disorganization! That’s Air Canada for you, nothing new. I would have chosen a different airline if it were an option, and Air Canada continues to prove they don’t care about their customers.

Good service, food and comfort in World Traveller Plus. Entertainment was poor - no wifi on the way out and barely working on the way back. Not a great choice of entertainment on the seat back tv.

Late! Late and late! More than 1hr 30mn. This sucks when it is the last of a 4 flight journey. I missed my dinner! Which is not nice on Valentine’s Day!!! But better than the gate next to us, the poor Chinese people were rebooked to the next day flight. AA had to call security as it became very heated with the passengers! It was a mess at DFW that afternoon/evening. I wish they had some food for the people who travel as part of international journey. Indigo does it in India and it is fantastic.

They had us seating down for one hour just waiting on the plane

Flying with BA is always a good experience—even in economy class. It is better if in business and first class. Timely, breeze through security and timely connections

We waited at BOS at the gate for an hour and couldn’t get a drink or anything. Once in the air the service, food and ride was excellent.

My enetertainmnet screen was broken. Lost my bags. Almost missed my flight do to connection issues with (despite a request) ZERO help from crew. Food was edible. Potatoes pretty good even

Our Jackson, Mississippi to Dallas Fort Worth flight was delayed on 1/19/26.. This was changed to Jackson to Charlotte in the last minute because of this delay. This started some kind of disconnect between American Airlines and British Airways bookings. We could not go past the passport control in London Heathrow. I had to go to the counter and waited for more than 30 minutes to get a new boarding pass. Problems did not end there. Somehow our entire return flight was canceled by someone. I had to make several phone calls over several days to fix the problem – this was not easy from India. Looks like there was some kind of disconnect between two airlines or some agent did not do it right. I’m anxious to know what went wrong.

The issue was not with BA it was with the link yoiu sent fopr booking the flight

Loved the boarding option from Business class lounge, experience on flight was excellent, plenty of good food choices

Getting the boarding passes between the BA and AA apps was very clunky.

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

Information on your arrival and departure airports