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$286+ Cheap flights from Oregon to Porto (OPO)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/13. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — OPO
Mar 19 — Mar 261
Thu 3/19
Thu 3/26
1 adult, Economy
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Cheap flight deals from Oregon to Porto

Cheapest flights from Oregon to Porto
Explore the most affordable flight options available from Oregon to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 17, 2026.

This Travelocity deal was found by Cheapflights users on 2/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/276:00 am
PDX
-
OPO
2 stops26h 00m
Iberia
Wed 5/68:40 pm
OPO
-
PDX
2 stops32h 58m
Iberia
Deal found 2/15$512
This KLM deal was found by Cheapflights users on 2/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/91:05 pm
PDX
-
OPO
1 stop22h 10m
KLM
Wed 4/224:20 pm
OPO
-
PDX
1 stop26h 50m
KLM
Deal found 2/14$534
This Priceline deal was found by Cheapflights users on 2/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/271:52 pm
PDX
-
OPO
2 stops21h 58m
British Airways
Wed 5/68:20 pm
OPO
-
PDX
1 stop29h 20m
British Airways
Deal found 2/15$570
This KLM deal was found by Cheapflights users on 2/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/91:05 pm
PDX
-
OPO
1 stop18h 25m
KLM
Sat 4/257:00 pm
OPO
-
PDX
1 stop24h 10m
KLM
Deal found 2/16$584
This Gotogate deal was found by Cheapflights users on 2/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/96:22 am
PDX
-
OPO
2 stops29h 58m
Multiple Airlines
Sat 4/254:40 pm
OPO
-
PDX
2 stops33h 00m
Multiple Airlines
Deal found 2/16$632
This United Airlines deal was found by Cheapflights users on 2/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/1711:10 pm
PDX
-
OPO
2 stops27h 20m
United Airlines
Tue 3/316:00 am
OPO
-
PDX
2 stops44h 34m
United Airlines
Deal found 2/15$638
This Delta deal was found by Cheapflights users on 2/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/15:15 am
EUG
-
OPO
2 stops26h 10m
Delta
Wed 4/85:00 am
OPO
-
EUG
2 stops26h 50m
Delta
Deal found 2/14$662
This FlightHub deal was found by Cheapflights users on 2/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/52:09 pm
EUG
-
OPO
2 stops25h 31m
Lufthansa
Fri 3/136:30 am
OPO
-
EUG
2 stops21h 37m
Lufthansa
Deal found 2/16$666
This KLM deal was found by Cheapflights users on 2/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/121:05 pm
PDX
-
OPO
1 stop25h 10m
KLM
Fri 4/245:00 am
OPO
-
PDX
1 stop14h 10m
KLM
Deal found 2/14$670
This Mytrip deal was found by Cheapflights users on 2/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/93:30 pm
PDX
-
OPO
2 stops21h 45m
Multiple Airlines
Wed 4/225:05 am
OPO
-
PDX
3 stops20h 55m
Multiple Airlines
Deal found 2/14$684
This United Airlines deal was found by Cheapflights users on 2/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/55:00 am
EUG
-
OPO
2 stops20h 30m
United Airlines
Fri 3/136:00 am
OPO
-
EUG
2 stops24h 08m
United Airlines
Deal found 2/14$758
This United Airlines deal was found by Cheapflights users on 2/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/192:08 pm
EUG
-
OPO
2 stops40h 37m
United Airlines
Mon 2/2312:35 pm
OPO
-
EUG
2 stops32h 31m
United Airlines
Deal found 2/14$803

Find flight deals from Oregon to Porto

Keep the following information in mind while searching for Oregon to Porto flight deals. Data was last updated February 17, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$512
(Travelocity)

One-way from

$286
(Kiwi.com)

Popular in

May

Cheapest in

January

Average price

$736
Provider with most accurate pricing for Portland-Porto flight deals.
Search Deals
Provider most trusted by Cheapflights users for Portland-Porto flights.
Search Deals
From Oregon to Porto
Search Deals
One-way flight from Oregon to Porto
Search Deals
Highest demand for flights based on searches. 17% potential increase in price ($199 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($34 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Oregon to Porto that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 17, 2026.
Use the filters below to find and compare flights from Oregon to Porto that are best for you.

Fly from

Oregon

Fly to

Porto

Route

Depart

Return

Price

PortlandPorto

PDX - OPO

PDXOPO

Portland

Mon 4/27

6:00 am-4:00 pm

2 stops26h 00m

Porto

Wed 5/6

8:40 pm-9:38 pm

2 stops32h 58m

$512

PortlandPorto

PDX - OPO

PDXOPO

Portland

Thu 4/9

1:05 pm-7:15 pm

1 stop22h 10m

Porto

Wed 4/22

4:20 pm-11:10 am

1 stop26h 50m

$534

PortlandPorto

PDX - OPO

PDXOPO

Portland

Thu 4/9

1:05 pm-10:40 am

1 stop13h 35m

Porto

Sat 4/25

11:45 am-11:10 am

1 stop31h 25m

$584

PortlandPorto

PDX - OPO

PDXOPO

Portland

Thu 4/9

1:05 pm-3:30 pm

1 stop18h 25m

Porto

Sat 4/25

7:00 pm-11:10 am

1 stop24h 10m

$584

PortlandPorto

PDX - OPO

PDXOPO

Portland

Thu 4/9

6:22 am-8:20 pm

2 stops29h 58m

Porto

Sat 4/25

4:40 pm-5:40 pm

2 stops33h 00m

$632

PortlandPorto

PDX - OPO

PDXOPO

Portland

Tue 3/17

11:10 pm-9:30 am

2 stops27h 20m

Porto

Tue 3/31

6:00 am-6:34 pm

2 stops44h 34m

$638

EugenePorto

EUG - OPO

EUGOPO

Eugene

Wed 4/1

5:15 am-3:25 pm

2 stops26h 10m

Porto

Wed 4/8

5:00 am-11:50 pm

2 stops26h 50m

$662

EugenePorto

EUG - OPO

EUGOPO

Eugene

Thu 3/5

2:09 pm-11:40 pm

2 stops25h 31m

Porto

Fri 3/13

6:30 am-9:07 pm

2 stops21h 37m

$666

PortlandPorto

PDX - OPO

PDXOPO

Portland

Tue 3/3

7:00 am-10:30 am

2 stops43h 30m

Porto

Thu 3/19

11:15 am-12:25 pm

1 stop32h 10m

$686

PortlandPorto

PDX - OPO

PDXOPO

Portland

Tue 3/3

7:00 am-10:30 am

2 stops43h 30m

Porto

Wed 3/18

5:00 am-12:25 pm

1 stop14h 25m

$686

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/15

Showing 1-10 of 27 results
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Best time to book a flight from Oregon to Porto

Have a flexible travel schedule? Discover the best time to fly to Porto from Oregon with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Oregon to Porto

What is the cheapest month to book a flight from Oregon to Porto?

Currently, January is the cheapest month in which you can book a flight from Oregon to Porto (average of $470). Flying from Oregon to Porto in May is currently the most expensive (average of $963). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Find useful and relevant information for your journey from Oregon to Porto. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Porto from Oregon?

    Porto (OPO), located 6.8 mi from the city center, is the airport you fly into when you book flights from Oregon to Porto.

  • How long is the flight from Oregon to Porto?

    Departing from Oregon to Porto will take you 22h 10m. Oregon and Porto are separated by a distance of 5183 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines to fly from Oregon to Porto one-way?

    For one-way options, check prices for Delta. According to our data, you can fly for as low as $424. Users have also found prices from $503 and $582 on KLM and United Airlines, respectively.

  • Can I find deals for flights from Oregon to Porto that include hotel bookings?

    Yes. In addition to deals on Oregon to Porto flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Oregon to Porto?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Oregon to Porto.

  • Can I find deals for business class flights from Oregon to Porto?

    Yes. Cheapflights offers flight deals from Oregon to Porto by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Oregon to Porto?

    Currently, January is the cheapest month in which you can book a flight from Oregon to Porto (average of $470). Flying from Oregon to Porto in May is currently the most expensive (average of $963). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Porto?

Book flights to Porto if you plan to visit one of these locations
Vila Nova de Gaia
Aveiro
Arcos de Valdevez
Coimbra

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Oregon to Porto

See prices for flight routes from nearby airports that may be better suited for you.
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Top 3 airlines flying from Oregon to Porto

Discover the top 3 airlines that operate flights from Oregon to Porto. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 17, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$494Average$1,024FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$498Average$892FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$537Average$1,103FlexibilityNo cancel feeOn-time69%

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