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$314+ 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 3/9. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — OPO
Jan 25 — Feb 11
Sun 1/25
Sun 2/1
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 December 26, 2025.

This KAYAK deal was found by Cheapflights users on 12/26. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/302:47 pmPDX - OPO
2 stops22h 28mMultiple Airlines
Thu 1/229:55 pmOPO - PDX
2 stops32h 16mMultiple Airlines
Deal found 12/26$1,430
This Iberia deal was found by Cheapflights users on 12/25. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/277:00 amPDX - OPO
2 stops16h 40mIberia
Mon 1/58:40 pmOPO - PDX
2 stops33h 31mIberia
Deal found 12/25$2,035
This Expedia deal was found by Cheapflights users on 12/25. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/319:42 pmPDX - OPO
2 stops30h 08mMultiple Airlines
Fri 1/169:55 pmOPO - PDX
2 stops54h 48mMultiple Airlines
Deal found 12/25$3,490
This United Airlines deal was found by Cheapflights users on 12/25. 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.
Sat 12/277:30 amPDX - OPO
3 stops23h 35mUnited Airlines
Mon 1/58:30 amOPO - PDX
2 stops20h 15mUnited Airlines
Deal found 12/25$4,852
This Kiwi.com deal was found by Cheapflights users on 12/25. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3110:40 amPDX - OPO
1 stop17h 15mMultiple Airlines
Wed 1/148:55 amOPO - PDX
2 stops39h 53mMultiple Airlines
Deal found 12/25$5,379
This Kiwi.com deal was found by Cheapflights users on 12/25. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/3010:40 amPDX - OPO
1 stop17h 10mMultiple Airlines
Wed 1/148:55 amOPO - PDX
2 stops39h 53mMultiple Airlines
Deal found 12/25$5,446
This Kiwi.com deal was found by Cheapflights users on 12/25. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3110:40 amPDX - OPO
1 stop17h 15mMultiple Airlines
Sun 1/188:55 amOPO - PDX
2 stops39h 53mMultiple Airlines
Deal found 12/25$5,693
This Kiwi.com deal was found by Cheapflights users on 12/25. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/3010:40 amPDX - OPO
1 stop17h 10mMultiple Airlines
Sun 1/188:55 amOPO - PDX
2 stops39h 53mMultiple Airlines
Deal found 12/25$5,761

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 December 26, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$482
(Delta)

One-way from

$314
(Kiwi.com)

Popular in

May

Cheapest in

December

Average price

$589
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. 15% potential increase in price ($180 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($32 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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 December 26, 2025.
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

Thu 2/5

7:00 am-10:25 am

2 stops19h 25m

Porto

Fri 2/20

5:00 am-11:25 am

1 stop14h 25m

$482

PortlandPorto

PDX - OPO

PDXOPO

Portland

Thu 2/5

7:00 am-10:25 am

2 stops19h 25m

Porto

Fri 2/20

5:00 am-11:25 am

1 stop14h 25m

$483

PortlandPorto

PDX - OPO

PDXOPO

Portland

Sun 2/15

1:25 pm-3:25 pm

1 stop18h 00m

Porto

Sat 3/7

4:10 pm-11:25 am

1 stop27h 15m

$485

EugenePorto

EUG - OPO

EUGOPO

Eugene

Thu 3/5

5:00 am-9:30 am

2 stops20h 30m

Porto

Fri 3/13

6:00 am-12:15 pm

2 stops37h 15m

$491

PortlandPorto

PDX - OPO

PDXOPO

Portland

Tue 3/17

7:05 am-10:30 am

2 stops20h 25m

Porto

Tue 3/31

5:00 am-11:10 am

1 stop14h 10m

$583

PortlandPorto

PDX - OPO

PDXOPO

Portland

Wed 3/4

1:25 pm-10:30 am

1 stop13h 05m

Porto

Tue 3/31

7:00 pm-11:10 am

1 stop24h 10m

$583

PortlandPorto

PDX - OPO

PDXOPO

Portland

Fri 1/9

7:00 am-10:30 am

2 stops19h 30m

Porto

Fri 1/23

5:00 am-11:25 am

1 stop14h 25m

$683

PortlandPorto

PDX - OPO

PDXOPO

Portland

Fri 1/9

1:25 pm-10:30 am

1 stop13h 05m

Porto

Tue 1/20

11:15 am-11:25 am

1 stop32h 10m

$685

EugenePorto

EUG - OPO

EUGOPO

Eugene

Fri 1/23

12:15 pm-8:00 pm

2 stops23h 45m

Porto

Tue 1/27

12:25 pm-10:44 pm

2 stops42h 19m

$870

EugenePorto

EUG - OPO

EUGOPO

Eugene

Thu 3/5

7:00 am-11:45 am

3 stops20h 45m

Porto

Fri 3/13

8:20 am-9:31 pm

3 stops20h 11m

$6,935

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/25

Showing 1-10 of 15 results
1
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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 $478). Flying from Oregon to Porto in May is currently the most expensive (average of $970). 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.

What is the cheapest time of day to fly from OR to OPO?

Find hourly flight availability from Oregon to Porto. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 26, 2025.

A simple way to save on the total cost of your ticket is to fly from Oregon to Porto at noon. If you’re flexible enough to do this you can expect to save up to 11% on your trip compared to booking a flight in the evening.

How much does it cost to fly round-trip from Oregon to Porto?

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 18h. 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 $486. Users have also found prices from $535 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 $478). Flying from Oregon to Porto in May is currently the most expensive (average of $970). 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
Aveiro
Arcos de Valdevez
Coimbra
Vila Nova de Gaia

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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 December 26, 2025.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest$498Average$909FlexibilityNo cancel feeOn-time75%
DeltaCheapest$498Average$1,032FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$644Average$1,123FlexibilityNo cancel feeOn-time69%

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