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$315+ 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 10/10. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — OPO
Aug 7 — Aug 141
Thu 8/7
Thu 8/14
1 adult, Economy
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Cheap flight deals from Oregon to Porto

Keep the following information in mind while searching for Oregon to Porto flight deals. Data was last updated August 2, 2025.

Round-trip from

$593
(United Airlines)

One-way from

$315
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$1,020
From Oregon to Porto
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One-way flight from Oregon to Porto
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Highest demand for flights based on searches. 23% potential increase in price ($327 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($39 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Find 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 August 2, 2025.

This United Airlines deal was found by Cheapflights users on 8/2. 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.
Wed 11/55:00 amPDX - OPO
2 stops20h 30mUnited Airlines
Wed 11/196:00 amOPO - PDX
2 stops24h 56mUnited Airlines
Deal found 8/2$593
This Travelocity deal was found by Cheapflights users on 7/31. 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.
Sat 10/257:40 pmPDX - OPO
2 stops36h 35mMultiple Airlines
Thu 11/67:25 pmOPO - PDX
2 stops35h 08mMultiple Airlines
Deal found 7/31$619
This American Airlines deal was found by Cheapflights users on 8/1. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/2812:30 pmPDX - OPO
2 stops19h 30mAmerican Airlines
Fri 12/128:20 amOPO - PDX
2 stops21h 59mAmerican Airlines
Deal found 8/1$658
This Cheapflightsfares deal was found by Cheapflights users on 8/1. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/189:55 amPDX - OPO
2 stops21h 50mLufthansa
Sun 10/266:15 amOPO - PDX
2 stops25h 30mLufthansa
Deal found 8/1$827
This Delta deal was found by Cheapflights users on 7/31. 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 11/121:25 pmPDX - OPO
1 stop25h 00mDelta
Sun 11/1611:15 amOPO - PDX
1 stop32h 10mDelta
Deal found 7/31$851
This KLM deal was found by Cheapflights users on 7/30. 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.
Wed 11/121:25 pmPDX - OPO
1 stop13h 05mKLM
Sun 11/1611:15 amOPO - PDX
1 stop32h 10mKLM
Deal found 7/30$904
This Ovago deal was found by Cheapflights users on 8/1. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/207:25 pmPDX - OPO
1 stop31h 00mBritish Airways
Fri 8/299:10 pmOPO - PDX
1 stop28h 25mBritish Airways
Deal found 8/1$984
This Iberia deal was found by Cheapflights users on 8/1. 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.
Tue 9/27:21 amPDX - OPO
2 stops29h 59mIberia
Tue 9/1610:00 pmOPO - PDX
2 stops31h 27mIberia
Deal found 8/1$1,006
This Cheapflightsfares deal was found by Cheapflights users on 8/1. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1910:51 amPDX - OPO
2 stops23h 39mSWISS
Sat 9/278:40 amOPO - PDX
2 stops18h 06mSWISS
Deal found 8/1$1,011
This Air Canada deal was found by Cheapflights users on 8/1. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/316:15 amPDX - OPO
2 stops43h 20mAir Canada
Tue 9/1612:50 pmOPO - PDX
2 stops34h 35mAir Canada
Deal found 8/1$1,015
This Gurufare deal was found by Cheapflights users on 7/30. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/131:57 pmEUG - OPO
2 stops25h 23mLufthansa
Sat 9/2012:35 pmOPO - EUG
2 stops18h 15mLufthansa
Deal found 7/30$1,099
This Mytrip deal was found by Cheapflights users on 7/30. 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.
Sat 9/136:30 amEUG - OPO
3 stops30h 50mMultiple Airlines
Sat 9/2010:00 pmOPO - EUG
3 stops33h 58mMultiple Airlines
Deal found 7/30$2,586

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 August 2, 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

Wed 11/5

5:00 am-9:30 am

2 stops20h 30m

Porto

Wed 11/19

6:00 am-10:56 pm

2 stops24h 56m

$593

PortlandPorto

PDX - OPO

PDXOPO

Portland

Sat 10/25

7:40 pm-3:15 pm

2 stops36h 35m

Porto

Thu 11/6

7:25 pm-10:33 pm

2 stops35h 08m

$619

PortlandPorto

PDX - OPO

PDXOPO

Portland

Fri 11/28

12:30 pm-4:00 pm

2 stops19h 30m

Porto

Fri 12/12

8:20 am-10:19 pm

2 stops21h 59m

$658

PortlandPorto

PDX - OPO

PDXOPO

Portland

Sat 10/18

9:55 am-3:45 pm

2 stops21h 50m

Porto

Sun 10/26

6:15 am-12:45 am

2 stops25h 30m

$827

PortlandPorto

PDX - OPO

PDXOPO

Portland

Wed 11/12

1:25 pm-10:25 pm

1 stop25h 00m

Porto

Sun 11/16

11:15 am-11:25 am

1 stop32h 10m

$851

PortlandPorto

PDX - OPO

PDXOPO

Portland

Wed 11/12

1:25 pm-10:30 am

1 stop13h 05m

Porto

Sun 11/16

11:15 am-11:25 am

1 stop32h 10m

$904

PortlandPorto

PDX - OPO

PDXOPO

Portland

Wed 8/20

7:25 pm-10:25 am

1 stop31h 00m

Porto

Fri 8/29

9:10 pm-5:35 pm

1 stop28h 25m

$984

PortlandPorto

PDX - OPO

PDXOPO

Portland

Tue 9/2

7:21 am-9:20 pm

2 stops29h 59m

Porto

Tue 9/16

10:00 pm-9:27 pm

2 stops31h 27m

$1,006

PortlandPorto

PDX - OPO

PDXOPO

Portland

Fri 9/19

10:51 am-6:30 pm

2 stops23h 39m

Porto

Sat 9/27

8:40 am-6:46 pm

2 stops18h 06m

$1,011

PortlandPorto

PDX - OPO

PDXOPO

Portland

Sun 8/31

6:15 am-9:35 am

2 stops43h 20m

Porto

Tue 9/16

12:50 pm-3:25 pm

2 stops34h 35m

$1,015

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/31

Showing 1-10 of 21 results
1
2
3

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 $523). Flying from Oregon to Porto in June is currently the most expensive (average of $1,033). 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 August 2, 2025.

When flying from Oregon to Porto, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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

Reviews of airlines servicing Porto

Get insights into the airlines that provide service to Porto. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Porto. Reviews last updated August 2, 2025.
Read reviews from past customers who have flown Delta, KLM, and SWISS from Oregon to Porto. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,983 reviews

Boarding

8.2

Food

7.3

Entertainment

7.9

Crew

8.5

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,983 reviews
Delta
8.0
Very good
7,983 reviews

Boarding

8.2

Food

7.3

Entertainment

7.9

Crew

8.5

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
KLM
7.8
Good
1,384 reviews
Delta
8.0
Very good
7,983 reviews

Boarding

8.2

Food

7.3

Entertainment

7.9

Crew

8.5

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
SWISS
7.5
Good
1,686 reviews
Delta
8.0
Very good
7,983 reviews

Boarding

8.2

Food

7.3

Entertainment

7.9

Crew

8.5

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,904 reviews
Delta
8.0
Very good
7,983 reviews

Boarding

8.2

Food

7.3

Entertainment

7.9

Crew

8.5

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,983 reviews

Boarding

8.2

Food

7.3

Entertainment

7.9

Crew

8.5

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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.

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

    For one-way options, check prices for Lufthansa. According to our data, you can fly for as low as $576. Users have also found prices from $583 and $612 on United Airlines and WestJet, 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 $523). Flying from Oregon to Porto in June is currently the most expensive (average of $1,033). 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
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 4 airlines flying from Oregon to Porto

Discover the top 4 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 August 2, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$658Average$1,224FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$695Average$1,121FlexibilityNo cancel feeOn-time69%
DeltaCheapest$704Average$1,059FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$731Average$1,182FlexibilityNo cancel feeOn-time75%

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