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PDX - OPO

$585 Find cheap flights from Portland to Porto

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 Porto departing on 10/10. 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
0 bags
qui 6/13
qui 6/20

Search hundreds of travel sites at once for deals on flights to Porto

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Portland to Porto.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Portland to Porto.
In the last 7 days travelers have searched 42,566,405 times on KAYAK, and here is why:

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Cheap flight deals from Portland to Porto (PDX-OPO)

 
These are the cheapest deals for flights from Portland to Porto currently on KAYAK along with options from the most popular airlines KAYAK users selected for this route. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Recent round-trip flight deals from Portland to Porto

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from Portland to Porto.

Recent one-way flight deals from Portland to Porto

Only flying one-way? Below are some of the best one-way flight deals from Portland to Porto found on KAYAK recently.

Recent last minute flight deals from Portland to Porto

Leaving soon but still want a bargain? Check out these latest deals for last minute flights from Portland to Porto.

Recent direct flight deals from Portland to Porto

The latest deals for direct flights from Portland to Porto so you can sit back and relax without the need for a layover.

Cheap bus & train deals from Portland to Porto

Find recent round-trip train or bus tickets from Portland to Porto.

All round-trip flight deals to Porto

The cheapest plane tickets to Porto found on KAYAK recently.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
5:00 am - 9:45 amPDX-OPO
20h 45m2 stops
12:25 pm - 6:17 pmOPO-PDX
37h 52m2 stops
ter, out 8 - qua, out 23
5:00 am - 9:45 amPDX-OPO
20h 45m2 stops
12:35 pm - 9:43 pmOPO-PDX
17h 08m1 stop
$832United Airlines
Find Deal
ter, out 8 - qua, out 23
11:10 am - 7:45 amPDX-OPO
36h 35m2 stops
1:05 pm - 10:17 pmOPO-PDX
40h 12m2 stops
$849SWISS
Find Deal
ter, out 15 - ter, out 29
2:20 pm - 3:40 pmPDX-OPO
17h 20m1 stop
4:10 pm - 12:00 pmOPO-PDX
26h 50m1 stop
$858KLM
Find Deal
ter, out 15 - ter, out 29
1:50 pm - 3:40 pmPDX-OPO
17h 50m2 stops
4:10 pm - 12:00 pmOPO-PDX
26h 50m1 stop
$862KLM
Find Deal
ter, out 15 - ter, out 29
7:15 pm - 7:15 pmPDX-OPO
16h 00m1 stop
8:05 pm - 5:25 pmOPO-PDX
29h 20m1 stop
$890British Airways
Find Deal
ter, out 8 - qua, out 23
1:50 pm - 3:40 pmPDX-OPO
17h 50m2 stops
6:30 am - 10:44 pmOPO-PDX
24h 14m2 stops
$1,014Delta
Find Deal
sex, ago 30 - qua, set 11
6:15 am - 8:25 amPDX-OPO
18h 10m2 stops
9:15 am - 11:49 pmOPO-PDX
22h 34m2 stops
$1,040Delta
Find Deal
ter, jun 11 - sex, jun 28
12:59 am - 11:40 amPDX-OPO
26h 41m2 stops
8:15 am - 12:29 amOPO-PDX
24h 14m2 stops
$1,560British Airways
Find Deal
sex, ago 2 - sex, ago 16
1:18 pm - 7:55 pmPDX-OPO
22h 37m2 stops
9:55 pm - 5:25 pmOPO-PDX
27h 30m2 stops
$1,988Iberia
Find Deal
qui, jul 4 - sex, jul 5
5:00 am - 9:45 amPDX-OPO
20h 45m2 stops
$585United Airlines
Find Deal
qui, out 10
11:10 am - 7:55 amPDX-OPO
36h 45m2 stops
$597SWISS
Find Deal
qua, set 18
2:20 pm - 10:15 pmPDX-OPO
23h 55m1 stop
$604KLM
Find Deal
qui, out 10
4:01 pm - 9:45 amPDX-OPO
33h 44m3 stops
$614United Airlines
Find Deal
qua, set 18
2:00 pm - 4:10 pmPDX-OPO
18h 10m2 stops
ter, ago 27
8:15 am - 3:00 pmPDX-OPO
22h 45m3 stops
ter, ago 27
1:31 pm - 9:45 amPDX-OPO
36h 14m3 stops
$703United Airlines
Find Deal
qui, out 10
3:55 pm - 10:50 pmPDX-OPO
22h 55m1 stop
ter, ago 27
10:30 am - 9:45 amPDX-OPO
15h 15m1 stop
$862United Airlines
Find Deal
qua, set 18
12:59 am - 11:40 amPDX-OPO
26h 41m2 stops
$3,065American Airlines
Find Deal
seg, ago 26
3:55 pm - 10:45 pmPDX-OPO
46h 50m2 stops
6:15 am - 6:41 pmOPO-PDX
20h 26m2 stops
$7,314Lufthansa
Find Deal
qui, mai 16 - sáb, jun 1
10:05 am - 3:30 pmPDX-OPO
21h 25m2 stops
5:00 am - 12:00 pmOPO-PDX
15h 00m1 stop
$7,690Delta
Find Deal
qui, mai 16 - sáb, jun 1
2:15 pm - 3:40 pmPDX-OPO
17h 25m1 stop
5:00 am - 12:00 pmOPO-PDX
15h 00m1 stop
$7,698KLM
Find Deal
qui, mai 16 - sáb, jun 1
7:00 am - 11:05 amPDX-OPO
20h 05m3 stops
9:00 am - 8:56 pmOPO-PDX
19h 56m2 stops
$12,762United Airlines
Find Deal
qui, mai 16 - sáb, jun 1

Flights from Portland to Porto - Travel Insights & Trends

Get data-powered insights and trends into flights from Portland to Porto to help you find the cheapest flights, the best time to fly and much more.

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

The average price of all flights from Portland to Porto clicked on KAYAK for each day over the last 12 months.
When flying from Portland to Porto, you should consider leaving on a Monday and avoid Thursdays if you are looking for the best rates. For your return to Portland, you’ll find the best rates on Mondays and the most expensive ones on Wednesdays.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Portland to Porto, 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 Porto is January, where tickets cost $602 on average. On the other hand, the most expensive months are June and December, where the average cost of tickets is $1,698 and $1,653 respectively.

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

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Portland to Porto, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from Portland to Porto, you should book around 3 days before departure. For the absolute cheapest price, our data suggests you should book 3 days before departure.

Which airlines provide the cheapest flights from Portland to Porto?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 3 days, United Airlines offered the best one-way deal for that route, at $585. KAYAK users also found Portland to Porto round-trip flights on United Airlines from $832 and on SWISS from $849.

Good to know

Low season

December

High season

September

Cheapest flight

$585
Best time to beat the crowds but there is an average 43% increase in price.
Most popular time to fly and prices are also 6% lower on average.
Flight from Portland to Porto

When to book flights from Portland to Porto

Are your dates flexible? Find out the best times to travel from Portland to Porto based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Portland to Porto

  • What is the cheapest flight from Portland to Porto?

    In the last 3 days, the lowest price for a flight from Portland to Porto was $585 for a one-way ticket and $831 for a round-trip.

  • Do I need a passport to fly between Portland and Porto?

    A passport is required to fly from Portland to Porto.

  • Which airports will I be using when flying from Portland to Porto?

    On your way to Porto, you’ll fly out from Portland. You’ll be landing at Porto.

  • Which aircraft models fly most regularly from Portland to Porto?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Portland to Porto?

    Star Alliance, SkyTeam, and oneworld are the airline alliances operating flights between Portland and Porto, with Star Alliance being the most commonly used for this route.

  • What is the most popular layover when flying to Porto from Portland?

    Amsterdam is the most popular layover city among KAYAK users traveling from Portland to Porto.

  • Which is the best airline for flights from Portland to Porto, Delta or KLM?

    The two airlines most popular with KAYAK users for flights from Portland to Porto are Delta and KLM. With an average price for the route of $1,134 and an overall rating of 8.0, Delta is the most popular choice. KLM is also a great choice for the route, with an average price of $1,038 and an overall rating of 7.8.

  • How does KAYAK find such low prices on flights from Portland to Porto?

    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 Porto.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Portland to Porto?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Porto from Portland 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 Porto?

    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 to Porto with an airline and back to Portland with another airline. Booking your flights between Portland and OPO can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Portland to Porto?

    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 to Porto from Portland up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top 5 airlines serving from Portland to Porto

 
See real verified KAYAK customer reviews for airlines flying from Portland to Porto. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Portland to Porto? 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 10706 reviews
8.2Boarding
7.9Comfort
7.4Food
8.0Entertainment
8.6Crew
Airline reviews

Absolutely nothing flight was cancelled and delayed for 2 days. Barely a heads up I want a full refund

2.0 MediocreDevan, May 2024AUS - BOS
Read more about Delta reviews

Absolutely nothing flight was cancelled and delayed for 2 days. Barely a heads up I want a full refund

The plane from SNA wouldn’t start after 5 tries. The team gave me an option of flying direct from LAX and giving me a Lyft ride there! Perfect!

Best airline! Always friendly and welcoming. Skyclub was great and loved the fast free wifi on board. I also love that you can pre-order your meal on the app!

Atlanta boarding crew at gate were filled with arrogance and were disrespectful. In flight crew showed indifference to the needs of passengers. This is about the flight from ATL to BDL.

The plane was FREEZING SEATS UNCOMFORTABLE Otherwise smooth Thank you

Boarding was chaotic. I didn’t finish dinner because I went to bed early. Breakfast omelet was overcooked and tasteless but croissant was better than usual. Plane was dirty—crumbs in every seam and lavatory was poorly maintained (paint peeling, etc.) and toilet paper had not been refreshed before takeoff. No cubby for storage in first and seat was narrow.

Boarding was somewhat chaotic. Unable to evaluate crew or food/drink because captain kept them seated due to turbulence. Have no idea if entertainment was offered.

West Jet has a horrible boarding process and the seats have no cushion.

Everything went smoothly. I didn’t like that when I booked in the main cabin my wife and I weren’t seated together. One would think when booking on an option that allows picking your seat. They would put you and your travel partner together. Had to call to get it sorted. They did fix.

The gate area was incredibly short staffed, with one representative manning 4-5 flights, which caused a 3 hr delay in boarding even though the plane was all ready to leave. Other flights also were delayed because of this. The flight crew was awesome and I feel bad for the only gate worker on call, but Delta needs to hire more employees.

We left one hour late because of technical difficulties. The economy comfort seats are great for the price. The crew was mediocre, they do not provide a pleasant experience, they just deliver food and drinks and give orders, not very amicable, no service and hospitality focus.

Booked connecting flights with KlM. My serving flight was the furthest part of the airport. On arrival in Zurich. My two cases arrived but only one carry on belong to my son. His three suitcase didn't arrive. After enquiring we discovered they were still in Amsterdam. We landed at 11.12. We eventually left the airport just after one.

Seats are fair enough for medium tall people. Good food all the trip. Fight attendances are warm

I thought KLM was the best airline but the Lima - Amsterdam was 1 hours late, the Brussels - Amsterdam was 2.30 hours late and the Amsterdam - Lima was 30 minutes late

The food was ok. The crew seemed like they were cranky. I had one guy get mad at me for passing in between the storage area to get to the other toilet. I can understand if it's not allowed but reprimanding me like I'm a student saying "This is the last time!" was not appropriate. During my meal time, there was a French family around me. No problems there but when we usually have meals, they are supposed to put their chair in the upright position. These people did not do it and the steward did not tell them to raise their seat in the upright position. However, I was told to do so! So, me and another person next to me had to eat with the monitor almost touching our faces. Furthermore, a lady in front of me was putting her feet up and preventing another elder passenger from putting her seat back. To make it worse, she was continuously hitting her back into her seat, shaking my monitor while I was watching a movie. A crew member did speak to her about it but then she accused me of pushing her seat forward! The crew member gave me a death stare and told me to stop pushing the seat forward. I did not even touch her seat at all, if I did, she would know it. Her boyfriend also stood up and tried to push her seat even further past the maximum decline to no avail. None of these people were reprimanded but the steward, some bald guy, was extremely friendly with them and did not even try to instruct them to do anything until it was time to land. I resisted the urge to really argue with them because I would have obviously been seen as the aggressor (I have no idea why). I hardly said anything on this flight except "more wine please" and "sorry" if I bumped into someone accidentally. Overall, it was an annoying flight and I had to resist the urge to yell at the steward and the people he was overly friendly with. The happiest moment of this flight was leaving it.

Overall a good experience. We were disappointed when we had to check our carry on due to the plane being full. KLM hadn’t notified us and we had valuable items in the carry on but they still made us check it. Some of the food was great and some was mediocre. Crew is really kind and funny.

The worst airline. Cancelled flight 30 min before boarding and rebooked on flight after 3 days.

I travel frequently. The flight was late again... KLM should really try and be on time

The flight itself it was great nice food the crew were very nice and helpful, Checking in from Birmingham wasn't great long queues for bag dropped, And I had my hand luggage case taken away from me even though I requested to have it with me as I had breakables items. I was told I can not because of the length of the flight with no explanation at all no options was given for me to take my fragile items out of my case it was taken away with hold buggage I find the staff member who was checking me in very unpleasant !! Can we please be advise if the rules have changed about the the carry on hand luggage it will be easier to be advise on booking your tickect if we not allowed to take the hand luggage with me. Overall I had a good flight .

The plane was clean and the staff was friendly. Food and drinks as expected on international flights. The entertainment system was old style, with a pullout controller, and selections not as extensive as on other flights.

Not a fan of the diagonal partially enclosed business class seats or how they have to be converted to beds manually by crew. I prefer more isolation and user control for switching to lie flat.

No lounge access with “United First” ticket. False alarm about late flight, jeopardizing connection. Wrong meal. Loose power socket would not hold plug, could not charge device. In-flight access to text messaging did not work. Toilet seat on plane would not stay up.

We ended up with seats in the very back. So they did not recline. Have no idea why, we reserved and checked in very early. The isles were very narrow and the seats had very little leg room. But they did give us water, and a snack.

Energetic crew - flight full of swiftied going to Taylor's opening show in Paris! Long lines for bathroom made out kind of suck though

Check in etc was very good. As for on the plane, it was like flying in a freezer. It was so cold, i have flown for years and never been so cold on a plane. Staff on board said its always cold when flying which is a load of rubbish. They wouldnt put any heating on and now i have the flu because of this .

I’ve had a couple flights this week on United that were delayed by an hour or more

Flight was delayed 2.5 hours - a big deal on an overnight when you plan to sleep.

I feel like they have upgraded the app since I last flew United and I found it to be super helpful. I had stopped flying United unless absolutely necessary and my experience on this trip indicates they have been working hard to improve their services.

Surprisingly easy! I was hesitant to try this, but the cost swayed me. I actually felt like I had less stress than all the taxiing and possible delays that occur with short regional flights where you spend less time in the air than getting to and from the plane..

This flight was delayed multiple times and eventually canceled around 2-3ish. Original take off time was around 10:30am. By 3, there were no other options out of Houston, so stuck in Houston for from 3pm - 11am the next day.

Seats comfortable on economy plus and attendants very helpful. Food was ok. Bathrooms needed servicing.

Original flight was cancelled - After waiting 2 hours for new take-off times. Then had to stand in line for 3 hours, ending at 2:30 am - to be told, " No hotel rooms anywhere in Dallas". No way for me to get any rest at DFW at that time of night.

Flight was an Iberia Flight on Level but seemed to be outsourced to a 3rd airline - Wamos. Seating pattern was different than when booked, we waited on the JETBRIDGE for 45 minutes to board, food was terrible. Movie options were limited to about 20 and very old, TV shows was limited to about 15 and equally as old. Staff was fine but definitely the "b-team". Landed about 60 minutes early and waited on the runway for 45 minutes - despite that Logan Airport in Boston recently added new gates. Mediocre experience at best.

I liked the friendly crew and desk staff, all very helpful. I was surprised and a little annoyed on my outbound flight from LGW to MCO as I had prepaid and booked my seat, which was all correct at check in on my boarding pass. when I got on the plane someone was in my seat ! I was moved to another seat. The food choice is quite limited and I feel that an option of a muffin for breakfast snack would be welcomed, not everyone wants egg or bacon wrap. The choice of entertainment is good, plenty to keep you busy on a long haul flight. I liked the option offered to have the cabin bag checked into the hold, it saved me as an older, lone traveller lifting my case into the overhead locker or finding there was no space.

good service from crew. Before the would have an option between cookies or nuts as snacks.. Now, there are only cookies. too bad. People who can not have sugar don't have a choice.

I’m hoping for WiFi included. Everything else was very good

Rude security cunts. However the lady that issued my boarding ticket when I was flying back from New York was lovely & helpful!!

Appalling! The flight was delayed by 3.5 hours and the American Airlines staff at the airport where nit very helpful. Once boarded, the flight crew were unhelpful, the food was poor and the aircraft was tatty.

Overall not great . We had a 4 four hour plus delay on returning and communication about the changes was poor . No updates were given on the website or by e-mail . We subsequently missed a connection , were our on a later flight and then missed all public transport for our onward journey home. Needed to hire a car at some expense . One member if staff was rude at the gate

I called prior to flying to confirm our baggage allowance which was 5 bags. On our outbound flight thee were no problems. On the return flight we were charged for each bag totaling $400! We are working with customer service to resolve the issue.

Better food and more space in the seats. Also when doing the web check in both times I was going in to your site the minute you open it and there is not really many seats to choose only to buy!!!

It was ok, not as good as it used to be. The Heathrow connection was a disaster - complete anarchy, unknowledgable and skimpy assistance and signage. Gate crew at next flight was great, held the flight while my wife struggled through security.

It was great! The seats were comfortable, and they fed me during the transatlantic flight, something which I have been missing out on for the past 3 years as I travel to and from school.

This flight was cancelled at the last minute. We were rebooked on another flight but a day later. We lost a day of our vacation and paid for a night in a hotel we couldn’t use. The flights we were rebooked on (both American) messed up our seating on both flights-we didn’t get the seats we had paid for. All in all, a terrible experience.

Lost our bags in Heathrow, We didn’t receive bags in Mallorca for 3 days, out of a 7 day cycling vacation. Really inconvenient and disappointing!

We missed the flight to Barcelona because the flight from Baltimore was delayed. We flew on Vueling VW6653. Our luggage didn’t arrive. Please help us get our luggage. We are staying at Hotel Gran Via in Barcelona

The seats were tiny, being of a fairly petite build, I don’t usually expect to feel crammed and cramped in a seat, but I definitely was on this flight. I couldn’t even bend over to get anything out from under the seat in front and getting up to go to the bathroom at night with the seat backs reclined was nearly impossible. I had to do gymnastics to get over and out. For an airline that does long flights overnight, it’s kind of ridiculous.

Not connecting flights. Missed my flight from Dublin to Liverpool because I arrived at Dublin one hour too late. For this mistake, they offered me a flight from Dublin to Manchester. Thats great and all, but I waste time and money to commute to Liverpool. Be sure to check the time of your connecting flights, because they sure don’t when they sell it to you

Excellent! Great flight attendants, good food (in business class, at least), very comfortable. Touchscreen and remote wasn’t great.

In economy and food was ok, but with limited leg space (and I was in a 2 seat configuration) it was difficult to eat with a tiny seat tray. I spilt wine on my trousers. First time on British Air (I usually fly Turkish Air) and in a 777. Heathrow was pleasant but changing terminals awkward.

Book cheap flights from Portland to Porto

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Portland to Porto found on KAYAK in the last 72 hours.
10/10qui
2 stopsUnited Airlines
20h 45mPDX-OPO
$585
9/18qua
2 stopsSWISS
36h 45mPDX-OPO
$597
10/10qui
1 stopKLM
23h 55mPDX-OPO
$604
9/18qua
3 stopsUnited Airlines
33h 44mPDX-OPO
$614
8/27ter
2 stops
18h 10mPDX-OPO
$621
8/27ter
3 stops
22h 45mPDX-OPO
$630
10/10qui
3 stopsUnited Airlines
36h 14mPDX-OPO
$703
8/27ter
1 stop
22h 55mPDX-OPO
$848
9/18qua
1 stopUnited Airlines
15h 15mPDX-OPO
$862
8/26seg
2 stopsAmerican Airlines
26h 41mPDX-OPO
$3,065

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Last minute flights from Portland to Porto

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Portland to Porto that are departing in the next 10 days.
5/16qui
multi-stopLufthansa
46h 50mPDX-OPO
6/1sáb
multi-stopLufthansa
20h 26mOPO-PDX
$7,314
5/16qui
multi-stopDelta
21h 25mPDX-OPO
6/1sáb
multi-stopDelta
15h 00mOPO-PDX
$7,690
5/16qui
multi-stopKLM
17h 25mPDX-OPO
6/1sáb
multi-stopKLM
15h 00mOPO-PDX
$7,698
5/16qui
multi-stopUnited Airlines
20h 05mPDX-OPO
6/1sáb
multi-stopUnited Airlines
19h 56mOPO-PDX
$12,762

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Portland - Porto Flights

Departure:

Portland (undefined)United States

Destination:

Porto (OPO)Portugal

Return flight deals:

Porto - Portland

Cabin classes:

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