$264 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 10/11. 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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Best Portugal Flight Deals from Portland

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Lisbon
Lisbon3 stops$462
Porto
Porto2 stops$590
Ponta Delgada
Ponta Delgada1 stop$756
Faro
Faro1 stop$710
Funchal
Funchal2 stops$880
Lisbon
Lisbon3 stops$462
Porto
Porto2 stops$590
Ponta Delgada
Ponta Delgada1 stop$756
Faro
Faro1 stop$710
Funchal
Funchal2 stops$880

Cheap Flights from Portland to Portugal

 
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, Oct 14 - Mon, Oct 20
 Logo
6:15 am - 10:20 amPDX-LIS
20h 05m3 stops
 Logo
10:45 pm - 6:46 pmLIS-PDX
28h 01m3 stops
Thu, Oct 23 - Sun, Nov 9
 Logo
6:15 am - 9:20 amPDX-LIS
19h 05m2 stops
 Logo
5:00 am - 6:30 pmLIS-PDX
21h 30m2 stops
Tue, Nov 4 - Wed, Nov 12
United Airlines Logo
8:20 am - 10:15 amPDX-LIS
17h 55m1 stop
United Airlines Logo
11:20 am - 11:48 amLIS-PDX
32h 28m2 stops
$587United Airlines
Find Deal
Tue, Oct 28 - Wed, Nov 19
United Airlines Logo
10:52 am - 9:30 amPDX-OPO
15h 38m2 stops
United Airlines Logo
6:00 am - 10:35 pmOPO-PDX
24h 35m2 stops
$590United Airlines
Find Deal
Mon, Nov 3 - Thu, Nov 13
Delta Logo
7:00 am - 9:00 amPDX-LIS
18h 00m1 stop
Delta Logo
11:15 am - 8:38 amLIS-PDX
29h 23m2 stops
$608Delta
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Sun, Nov 2 - Tue, Nov 11
Delta Logo
7:00 am - 9:00 amPDX-LIS
18h 00m1 stop
Delta Logo
5:30 am - 11:29 pmLIS-PDX
25h 59m2 stops
$614Delta
Find Deal
Mon, Nov 3 - Sat, Nov 15
British Airways Logo
5:45 pm - 6:55 pmPDX-LIS
17h 10m1 stop
British Airways Logo
6:40 pm - 3:55 pmLIS-PDX
29h 15m1 stop
$619British Airways
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Sun, Nov 2 - Sat, Nov 15
British Airways Logo
5:45 pm - 5:45 pmPDX-LIS
16h 00m1 stop
British Airways Logo
6:40 pm - 3:55 pmLIS-PDX
29h 15m1 stop
$624British Airways
Find Deal
Wed, Oct 29 - Thu, Nov 20
KLM Logo
2:25 pm - 10:30 amPDX-OPO
13h 05m1 stop
KLM Logo
4:10 pm - 11:25 amOPO-PDX
27h 15m1 stop
$652KLM
Find Deal
Thu, Oct 30 - Tue, Nov 18
KLM Logo
2:30 pm - 3:25 pmPDX-OPO
17h 55m2 stops
KLM Logo
4:10 pm - 11:25 amOPO-PDX
27h 15m1 stop
$707KLM
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 $607 (return) on average. On the other hand, the most expensive months are June and July, when the average cost of round-trip tickets is $1,373 and $1,194 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 4 weeks before departure. For the absolute cheapest price, our data suggests you should book 10 weeks before departure.


Good to know

Low seasonJanuary
High seasonOctober
Cheapest flight$264
Best time to beat the crowds with an average 14% drop in price.
Most popular time to fly and prices are also 20% 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.

  • 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.
8.0
DeltaOverall score based on 7957 reviews
8.2Boarding
7.3Food
8.5Crew
7.9Entertainment
7.9Comfort
Airline reviews

Always good but we must do something about people in rows ahead of you that don't put their seats back up when they are suppose to. And It's rough to not be able to even lean over to get something out of my purse.

10.0 ExcellentAnonymous, Jul 2025ATL - EYW
Read more Delta reviews

Always good but we must do something about people in rows ahead of you that don't put their seats back up when they are suppose to. And It's rough to not be able to even lean over to get something out of my purse.

Flight was delayed, 30+ bags had to be gate checked. Crew were very friendly!

Everything was good until we were boarding our connection flight in Atlanta, we were told to gate check our carry-on, but when we got inside the plane, there was plenty of room in the overhead.

Did not know my son and I had different seating arrangements. He was fine, but it was disappointing.

Flight was canceled, and no effort was made to help with rebooking, no hotel vouchers, no car transportation and minimal food voucher and most places for food were closed by the time the voucher was given. Waited for 3 hours for bags. Simply the worst travel experience I have ever had

Food was surprisingly good but the WiFi was not great

this crew didn't care much. bumping carts into seats more times than i care to remember

Very late arrival at PWM. Late jet getting to ATL. Equipment problem with aircraft - could not get enough water onto plane., Another delay getting FAA approval for flight with bottled H2O. Not the crew’s problem.

Everything was fine except the entertainment was not working for half of the flight.

Easy boarding with an extremely kind attendant. Seats were spacious and we had 3 seats for 2 people so we could stretch out. Comfortable air flow and very attentive and hospital attendants. Bathrooms and food were the only negative. Bathrooms were so small you could hardly get in and close the door. I don’t think an obese person would fit or a person with a movement disability. Food was the trending food for flights, nonexistent. We spent $40 getting sandwich and snack at airport for our 6 hour flught.

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

Cabin crew were excellent, very proffesional, polite and friendly, in flight snack was underwhelming, a packet of cheese biscuits, im sure KLM could run to a sandwich!

Legroom not all it could be, especially when the seat in front is reclined. Otherwise it was good, food and beverage were nice.

You should not have to pay for WiFi in business class

Transfer at Amsterdam airport is very convenient and the airport is easy to navigate. Boarding was also quick and easy. Cabin crew were excellent and the meals were good, although lacking in options.

Overall very positive. Boarding was quick and organized. Cabin was clean and seats were reasonably comfortable. Cabin crew was excellent and the meals provided were also of good quality

This fight left ahead of time which meant it arrived early which was great. Staff were very professional, but as with all these Short hop Flights the food was a disappointing snack There was no entertainment on this flight, but I did not expect any

They only had vegetarian food left on the flight which I wasn’t happy about. I didn’t get any food to eat at all.

The best airline I have ever travel , really good customer service, attention and service !!

United could have one single once of customer service. No human United employee would help me with the invalid mileage plus number, they said I had to speak with the computer.

United sent me a mileage plus number last year but that number is invalid so I can’t use it to check into flights or collect mileage. There is human to speak about the problem, only computers who keep asking me if I am using the correct email. It’s so frustrating and I cannot resolve it.

It was delayed instead of departing at 9:20pm, we departed at 11pm… putting us in Columbus after 2am! It was awful. Had I known about the delay, I could have spent some time in the United Lounge… I was starving because I started my journey in Budapest… so I was exhausted and hungry. Plus I had to make new arrangements to be picked up at the airport in Columbus, instead of midnight it was 2:30 am after getting luggage and out of airport. Not feasible. I would have just stayed in Chicago for the night and gotten a morning flight.

Not a great experience. We paid for the upgrade for premium economy seats and seated ourselves in very comfortable seats. Someone came along with the same seat on their boarding pass. The aircraft had been changed and as a result we were booted out and sent further back to small uncomfortable seats. After complaining we were moved to emergency row seats, which gave us more leg room but the seats don’t recline. For people in our 70’s we found having to sit upright from California to NJ very uncomfortable. Not sure why they chose to move senior citizens instead of the two people that were allowed to take the more comfortable seats. Not happy.

I liked the choice of lemon ginger tea. I think stewardesses can be more considerate of older people needs.

The food should improve! And The flight should leave on time and not make the traveler wait.

It was great, I’m very grateful for the pilots and crew flight attendants for everything.

Everything was great. Only thing that could’ve made it better was buy on board options for hot food, but the snacks were decent. The flight attendants were great. I had no complaints. I was able to make it to my destination safely

A little bit more leg room in premium economy. I am 6’4”.

Very bad service the way back we was on the way for r two days very bad condition and waiting for luggage till now

I was forcefully re-routed to another destination and was delayed a total of 8hours. I have still not received my bags, no one is taking responsibility. The agents at the airport lied to me that I will get to my destination same time as my previous flight where I was forcefully re-routed from.

Flight was delayed by 1.5hrs. Once inside, people had their small handbags on the storage. The crew (male guy) was not helpful in making some space in the storage. Instead, he asked few bags to be checked-in and it was not a great experience. No attempt to help but just followed the things with a straight face. People had their literally small bags and he wouldnt not move from one storage to another even if there was space and would not let us do i as well. Once flight was on, they ran out of Orange juice, really running out of orange juice when the temp were 32.degrees outside. didnt made the sense. Onasking for a extra snack, he made a face as if he was giving me out of his pocket. if the flight was delayed, there could have an attempt to provide something extra incase people did asked.

Our flight was canceled at the last minute. Someone on the flight said the exact same thing happened to her the day before. I will say they helped us book a flight on another airline so that we could still make our vacation with little delay.

United had no (zero) record of our flight. It took over an hour of us standing in line with surly employee while others waited to get resolved. I have never experienced such poor service and poor empathy.

We had a very long delay. First the inbound flight took a while, then maintenance, they “fixed it” to then do boarding and leave the gate, and waste a lot of time to have to go back to the gate and eventually deplane. Had to wait for a new aircraft, wait for a gate, and do the whole thing again. Instead of leaving at 9:50am we left until past 1. I could’ve not woken up at 5am, or spend some more time with my family if they gave more grace period of time between flights to give some time in case of any issues. But they have to make all and every dollar possible

Aircraft had technical issues. After 3 hours of trying to resolve, flight was cancelled. Was booked on a flight leaving 12 hours after intended departure. Now on 4 flights instead of 2 and a day late to my destination.

Abandoned me in hallway in a wheelchair… which I asked for because I sprained my back. After waiting in the hallway, I decided to walk the rest of the way since someone respecting me up.. My experience with the united was totally the opposite. Wheelchair access, propped swift and save me a lot of grief. Air Canada totally disorganized.

I am very tall. All airline seats are a bit uncomfortable.

Bad experience boarding and flight got delayed didn’t make it to my next flight

Captain sick. Unable to get replacement so delayed me 30 hours, many others delayed 54 hours. TOTALLY DESTROYED ALL MY PLANS, including lost my rental car which would now cost over 5 times what I paid so stuck with buses n trains... lost hotel reservations.... HORRIBLE!!!

The international flight from PHL to Lisbon was one of the worst I’ve experienced, ever. What was really disappointing was the entire experience of comfort and service in the coach cabin after takeoff. The food was inedible and the wine served with dinner was such low quality - it tasted of petrol. I couldn’t eat more than a bite or two of the chicken entree, being worried it would make me ill. The service took so long to reach the entire coach cabin, I ended up having the lights turned off on me as though I had to rush though dinner (though as I mentioned, it wasn’t as if I ate much - only the salad). Most of the attendants seemed generally annoyed and were not friendly or polite. While there was some turbulence, it wasn’t too uncomfortable and I know that is just a chance. The temperature of the cabin was so warm, even a friend a row or two up and on the other side of the plane felt like this. To top it all off, the seat was so uncomfortable and flattened/overused, I had back pains for DAYS afterward.

They’ve lost my bag and I have no way of really getting in touch with anyone and have received no updates.

Very crowded, no real explanation of food "chicken or pasta?" After dinner no drinks service. Plane was clean, but little help with finding soaces fir luggage to get into overhead bins. Many passengers putting 2 bags, hats, duty free in overhead bins so no space for roll ons

The airline was efficient and accommodating to work with though there was a delay. Appreciate the service and smooth experience!

Flight was good but seat in 12D was not comfortable, better on the Airbus 321 from Tampa to Charlotte. No breakfast was served before landing in zLonfon only a coffee and orange juice.

I was transferred to an American Airlines flight. The boarding was late and unorganized. The seating was extremely tight and uncomfortable. Will not use AA again.

The entertainment selection was ok, but overall not bad! The crew was great.

Good crew and boarding process. Horrible food and one of the most uncomfortable aircraft seats I have ever sat in. The cabin temperature was warm which made it hard for my family to sleep.

bad, made it to connecting flight and they didnt let me board

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