$281 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 5/10. 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
Lisbon1 stop$371
Porto
Porto2 stops$450
Faro
Faro2 stops$487
Ponta Delgada
Ponta Delgada1 stop$982
Funchal
Funchal2 stops$510
Lisbon
Lisbon1 stop$371
Porto
Porto2 stops$450
Faro
Faro2 stops$487
Ponta Delgada
Ponta Delgada1 stop$982
Funchal
Funchal2 stops$510

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, Mar 7 - Sun, Mar 22
Icelandair Logo
2:45 pm - 8:20 pm
PDX
-
LIS
21h 35m
1 stop
Icelandair Logo
9:20 pm - 6:00 pm
LIS
-
PDX
27h 40m
1 stop
$371Icelandair
Sat, Mar 7 - Sun, Mar 15
Icelandair Logo
2:45 pm - 8:20 pm
PDX
-
LIS
21h 35m
1 stop
Icelandair Logo
9:20 pm - 6:00 pm
LIS
-
PDX
27h 40m
1 stop
$372Icelandair
Tue, Apr 7 - Wed, Apr 15
United Airlines Logo
11:59 pm - 8:20 am
PDX
-
LIS
24h 21m
2 stops
United Airlines Logo
11:25 am - 10:29 pm
LIS
-
PDX
43h 04m
2 stops
$442United Airlines
Tue, Apr 7 - Thu, Apr 16
British Airways Logo
7:30 pm - 11:00 pm
PDX
-
LIS
19h 30m
1 stop
British Airways Logo
11:05 am - 5:40 pm
LIS
-
PDX
14h 35m
1 stop
$445British Airways
Wed, Feb 18 - Wed, Feb 25
British Airways Logo
5:45 pm - 9:55 am
PDX
-
LIS
32h 10m
1 stop
British Airways Logo
6:35 pm - 12:17 am
LIS
-
PDX
37h 42m
2 stops
$448British Airways
Sun, Feb 22 - Wed, Mar 4
United Airlines Logo
11:59 pm - 9:30 am
PDX
-
OPO
25h 31m
2 stops
United Airlines Logo
12:35 pm - 8:43 pm
OPO
-
PDX
16h 08m
1 stop
$450United Airlines
Sun, Feb 22 - Tue, Mar 3
Delta Logo
6:00 am - 10:30 am
PDX
-
OPO
20h 30m
2 stops
Delta Logo
11:15 am - 11:25 am
OPO
-
PDX
32h 10m
1 stop
$470Delta
Sun, Feb 22 - Mon, Mar 2
Delta Logo
6:00 am - 10:30 am
PDX
-
OPO
20h 30m
2 stops
Delta Logo
5:00 am - 11:25 am
OPO
-
PDX
14h 25m
1 stop
$473Delta
Tue, Feb 17 - Tue, Feb 24
KLM Logo
7:00 am - 9:30 am
PDX
-
FAO
18h 30m
2 stops
KLM Logo
7:45 pm - 11:25 am
FAO
-
PDX
23h 40m
1 stop
$487KLM
Sun, Feb 15 - Sun, Mar 1
KLM Logo
1:25 pm - 6:25 pm
PDX
-
FAO
21h 00m
1 stop
KLM Logo
6:50 pm - 11:25 am
FAO
-
PDX
24h 35m
1 stop
$491KLM
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 $558 (return) on average. On the other hand, the most expensive months are June and July, when the average cost of round-trip tickets is $1,306 and $1,166 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 27% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 8 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$281
Best time to beat the crowds with an average 19% drop in price.
Most popular time to fly and prices are also 15% lower on average.
Flight from Portland to Faro

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 8052 reviews
7.8Entertainment
8.5Crew
8.1Boarding
7.9Comfort
7.2Food
Airline reviews

It was good because we traveled without luggage, carry on only.

8.0 ExcellentAnonymous, Jan 2026
ATL - EWR
Read more Delta reviews

It was good because we traveled without luggage, carry on only.

I usually get upgraded so my experience is usually amazing. I did not get upgraded this time - which was fine - but the wifi had issues, the monitors were going in & out, & (though not Delta's fault) one of the gentlemen next to me desperately needed a shower.

The entertainment screens were not working and there was no air condition the entire flight. Very uncomfortable.

I have diamond medallion status and usually we are in comfort plus . We were in main this time ( which was fine ) and my husband wanted wine . I have at least 10 vouchers for drinks that are good for this year and next! The attendant would not take the picture of the voucher as proof and never came back to check as She asked me to pull it up on delta Wi-Fi. Instead my husband just used his Amex to buy the wine . Disappointing!!!

Food is basically Sun Chips, cookies or Cheezits. I had an exit row seat so I had plenty of room. The crew was very nice and efficient. Pilot kept us informed. Pretty good flight.

Air travel sucks. It continues to be awful for all airlines. No shame on delta alone.

It was Delta, but the flight attendants were stressful and disrespectful. I am a diamond member a travel weekly. I have not had a negative thing to share in quite some time. But this was noticeable.

Comfort Plus seat 11E seemed smaller than prior flights. The movie selection is good. Watched most of the most recent Tron movie. I'll watch the remaining part later as my movie is saved in the Delta Seatback Experience.

Flight was late from Newark to Atlanta, I asked flight attendant to please let my family of 3 out first when we landed to Atlanta because we were late for our connecting flight to Quito. She didn't and we were late for 5 minutes we couldn't board the plane and spend hours trying to get another flight with customer service for the next day.

I really liked the legroom. I am 6’4”.a at For some reason our seats were not together and using the app to fix it didn’t work. Passengers were nice enough to move for us but you should absolutely ensure a parent sits with their child.

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.

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!

Was happy we finally got upgraded in 1st class. The seat getting old. The cushiness need some improvement.

Yet another flight in which beverage and snack service was skipped. Other that that, firmly mediocre. Landed early, to gate late due to congestion at the gates. Airline's fault or airports fault: unknown.

Ineffective communication with United resulted in lost baggage. Their Baggage Tracing counter at MUC was shut down from 11:00-14:15 on my arrival. Undertrained, underinformed staff had me Running all over MUC to find someone to help me to no avail. Staff was rude, unhelpful, and unable to effectively use the systems they did have operational. They refused to contact United in any way or provide any accommodation or other resources while I waited for my luggage. This has destroyed my downstream itinerary. If they had even the slightest visibility I may have been able to reschedule/plan, but again, their staff provided nothing, and did nothing more than their website, which doesn’t even work on a standard phone browser. Miserable failure at all levels that weren’t associated with the operation of the aircraft.

Miserable. They moved my seat, but canceled the next leg of my flight. I resolved the issue at my transfer, but that resulted in lost luggage that has taken days off my schedule with no resolution. Worse, they fail to interface effectively with Lufthansa, forcing me to bounce between two equally useless help desks. The apps are unable to handle the situation, the bag dropped off the tracker, and while the call centers are polite, they do not provide written information to assist with cross-airline communication.

left on time, reasonable boarding process arrived early luggage came out quickly

I like flying first class, and United has a nice one

Teeny tiny bathrooms, crew was not realistic about when we'd arrive.

Check-in, boarding and the flight from Phoenix to Houston was quick and easy. The flight from Houston to Shreveport was delayed 5 hours. It was frustrating but I think United handled it the best they could.

Some flight attendants were great others were cranky. Seats were very tight and sitting on an aisle was very hard as the carts and people walking constantly bumped shoulder and arm.

It was great with United overall except for two things. 1) It was a 5-hour flight and we were with kids, so we were asking for extra snacks. They were extremely reticent to dole them out even though there wasn't any meal and the kids were starting to hit their limit towards the end. 2) Baggage didn't arrive until 80 minutes after we landed.

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.

everything was fine. but paying for 1 piece of check-in luggage and denying passengers to board with carry-on luggage which by air line's standards does not fit is not acceptable. when one travels for a longer time one needs to have some essentials

Couldn't fit knees, only 1 toilet working, didn't get anything to drink cause the stewards were not able to get to us

Flight was canceled for a reason they knew hours before but did not mention. Next the gate chnage from 37 to 38 at least 10 times. Ridiculous.

The flight from SFO to YVR was delayed and my bag did not make it to my next flight from YVR to SYD. It took almost 3 days after I landed to get my bag and when I got it, it was filled with dust

Our biggest complaint about Air Canada is that if you don’t like your seat during check-in, there’s a fee to move elsewhere. On our flight from YUL to FFL, we were charged to change seats—just regular seats. What’s maddening is that the plane wasn’t even full; there were even a few people sleeping in the middle row sections (entire rows, completely empty), using them as beds. In my opinion, charging passengers for seat changes is a cash grab by Air Canada. They are definitely not the airline they were back in the day. I suppose they need to gouge the consumer now that they pay their attendants while on ground. One out of 10.

Nothing specific. Cabin temperature was too high for some reason.

It was just fine. I managed to make all my connection too sbut had trouble in Munich with no wheel chair and trouble trying to get help from the airport people to get to the other terminal for my flight. Finally a wonderful lady Amelia, helped me to make my flight connection Timon with zero time to spare.

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.

The airline was not clear about a new departure time so we got to the airport early anyway. The flight left early which was great because of weather. The check in process was very easy and staff were friendly and helpful. The crew was great and our flight was very good.

Awful it always is unfortunately is the only way to fly direct to london

I travelled in business class and was disappointed by lack of service, curt and borderline rude time of the crew and to top it off, all of my luggage was delayed. It was like pulling teeth to even report the missing luggage and recover it the next day from the airport.

Plane was extremely delayed, but not all of it was BA fault (some was). Worst part was lack of room - this had as much space as an Allegiant flight. I thought transatlantic usually gave you an extra inch or two, but not this one. Entertainment system sporadically worked and didn’t have great options. Overhead bins are old and tiny, not as good as aunties new planes.

Boarding was poor. All groups called immediately one after the other resulting in a long queue in the jetty/jet bridge. Seats were very hard and and did not recline on a 4.5 hour flight. No food was available. Plane was cold. There was no entertainment.

The cramped seats are cruel and unusual punishment and may violate the Geneva code.

Check in was was and the agent was very friendly and helpful The lounge was nice...boarding was straight from the lounge Everything worked at our seats, and video entertainment was good ..food was mediocre

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

Information on your arrival and departure airports