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$323+ Cheap flights from Portland (PDX) to Portugal

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 1/22. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — LIS
Dec 22 — Dec 291
Mon 12/22
Mon 12/29
1 adult, Economy
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Cheap flight deals from Portland to Portugal

Keep the following information in mind while searching for Portland to Portugal flight deals. Data was last updated November 22, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$369
(oojo)

One-way from

$323
(Kiwi.com)

Popular in

June

Cheapest in

November

Average price

$559
Provider with most accurate pricing for Portland-Lisbon Humberto Delgado flight deals.
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Provider most trusted by Cheapflights users for Portland-Lisbon Humberto Delgado flights.
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From Portland to Portugal
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One-way flight from Portland to Portugal
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Highest demand for flights based on searches. 25% potential increase in price ($306 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($38 potential savings vs. average RT price).
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Average for round-trip flights in November 2025
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Find flight deals from Portland to Portugal

Cheapest flights from Portland to Portugal
Explore the most affordable flight options available from Portland to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 22, 2025.

This CheapOair deal was found by Cheapflights users on 11/20. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/811:59 pmPDX - LIS
2 stops25h 21mMultiple Airlines
Mon 12/153:55 pmLIS - PDX
2 stops34h 50mMultiple Airlines
Deal found 11/20$578
This Air Canada deal was found by Cheapflights users on 11/22. 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.
Mon 12/17:00 pmPDX - LIS
2 stops30h 20mMultiple Airlines
Sun 12/75:00 amLIS - PDX
2 stops36h 15mMultiple Airlines
Deal found 11/22$594
This United Airlines deal was found by Cheapflights users on 11/22. 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.
Mon 12/110:05 amPDX - LIS
3 stops39h 15mUnited Airlines
Sun 12/710:50 amLIS - PDX
2 stops39h 51mUnited Airlines
Deal found 11/22$606
This CheapOair deal was found by Cheapflights users on 11/21. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/67:00 pmPDX - LIS
2 stops30h 20mMultiple Airlines
Sun 12/145:00 amLIS - PDX
2 stops27h 37mMultiple Airlines
Deal found 11/21$611
This Mytrip deal was found by Cheapflights users on 11/20. 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.
Tue 11/259:50 amPDX - LIS
2 stops15h 30mMultiple Airlines
Wed 12/35:00 amLIS - PDX
2 stops24h 15mMultiple Airlines
Deal found 11/20$641
This United Airlines deal was found by Cheapflights users on 11/20. 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 11/258:20 amPDX - LIS
1 stop17h 55mUnited Airlines
Wed 12/35:00 amLIS - PDX
2 stops25h 15mUnited Airlines
Deal found 11/20$645
This Cheapflightsfares deal was found by Cheapflights users on 11/21. 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.
Thu 12/48:30 amPDX - LIS
2 stops20h 50mLufthansa
Sun 12/145:00 amLIS - PDX
2 stops27h 37mLufthansa
Deal found 11/21$649
This Delta deal was found by Cheapflights users on 11/21. 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.
Thu 12/47:05 amPDX - LIS
1 stop17h 50mDelta
Sun 12/145:30 amLIS - PDX
2 stops22h 05mDelta
Deal found 11/21$669
This Ovago deal was found by Cheapflights users on 11/20. 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.
Tue 12/910:10 amPDX - OPO
2 stops18h 40mLufthansa
Sun 1/111:45 pmOPO - PDX
2 stops42h 54mLufthansa
Deal found 11/20$1,008
This FlightHub deal was found by Cheapflights users on 11/21. 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.
Fri 11/287:05 amPDX - OPO
2 stops24h 10mAir Europa
Fri 12/1211:35 amOPO - PDX
2 stops41h 05mAir Europa
Deal found 11/21$1,132
This Air France deal was found by Cheapflights users on 11/21. 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 France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/97:05 amPDX - OPO
2 stops19h 25mMultiple Airlines
Sun 1/115:00 amOPO - PDX
1 stop14h 25mMultiple Airlines
Deal found 11/21$1,362
This KLM deal was found by Cheapflights users on 11/21. 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.
Fri 11/281:25 pmPDX - OPO
1 stop21h 50mKLM
Fri 12/126:30 amOPO - PDX
2 stops22h 10mKLM
Deal found 11/21$1,691

Cheapflights Fare Finder

 
Customize your flight search to find flights from Portland to Portugal 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 November 22, 2025.
Use the filters below to find and compare flights from Portland to Portugal that are best for you.

Fly from

Portland

Fly to

Portugal

Route

Depart

Return

Price

PortlandPorto

PDX - OPO

PDXOPO

Portland

Wed 1/21

7:00 am-10:30 am

2 stops19h 30m

Porto

Sun 1/25

5:00 am-11:25 am

1 stop14h 25m

$481

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Mon 3/2

7:00 am-9:00 am

1 stop18h 00m

Lisbon Humberto Delgado

Mon 3/16

5:00 am-12:25 pm

1 stop14h 25m

$486

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Wed 1/28

7:00 am-8:00 am

1 stop17h 00m

Lisbon Humberto Delgado

Sun 2/1

5:00 am-11:25 am

1 stop14h 25m

$486

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Mon 3/9

7:00 am-9:00 am

1 stop19h 00m

Lisbon Humberto Delgado

Wed 3/18

5:00 am-12:25 pm

1 stop14h 25m

$486

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Sun 3/8

7:05 am-3:10 pm

2 stops25h 05m

Lisbon Humberto Delgado

Wed 3/18

5:00 am-12:25 pm

1 stop14h 25m

$489

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Wed 2/4

1:25 pm-11:10 pm

1 stop25h 45m

Lisbon Humberto Delgado

Wed 2/11

5:00 am-11:25 am

1 stop14h 25m

$491

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Mon 1/12

1:30 pm-2:35 pm

2 stops17h 05m

Lisbon Humberto Delgado

Thu 1/22

11:25 am-11:25 am

1 stop32h 00m

$495

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Tue 3/10

7:00 am-9:00 am

1 stop19h 00m

Lisbon Humberto Delgado

Tue 3/17

5:30 am-8:59 pm

2 stops22h 29m

$502

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Fri 3/6

5:45 pm-12:10 pm

1 stop34h 25m

Lisbon Humberto Delgado

Thu 3/19

3:55 pm-4:55 pm

1 stop32h 00m

$507

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Fri 3/6

5:45 pm-5:55 pm

1 stop16h 10m

Lisbon Humberto Delgado

Fri 3/13

7:05 am-4:55 pm

1 stop16h 50m

$507

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/22

Showing 1-10 of 43 results
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Best time to book a flight from Portland to Portugal

Have a flexible travel schedule? Discover the best time to fly to Portugal from Portland 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 Portland to Portugal

What is the cheapest month to book a flight from Portland to Portugal?

Currently, November is the cheapest month in which you can book a flight from Portland to Portugal (average of $434). Flying from Portland to Portugal in June is currently the most expensive (average of $943). 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 PDX to PT?

Find hourly flight availability from Portland to Portugal. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 22, 2025.

One of the essential ways to save on airfare from Portland to Portugal is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight at noon could potentially save you up to 28% on airfare.

What is the cheapest day to fly from Portland to Portugal?

Use this chart to determine the cheapest time to fly round-trip from Portland to Portugal. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Portland to Portugal flight should consider departing on Tuesday afternoons when fares are most often at their lowest. Thursday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Portugal

Get insights into the airlines that provide service to Portugal. 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 Portugal. Reviews last updated November 22, 2025.
Read reviews from past customers who have flown Delta, KLM, and United Airlines from Portland to Portugal. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,001 reviews

Comfort

7.9

Boarding

8.1

Crew

8.5

Food

7.3

Entertainment

7.9

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,001 reviews
Delta
7.9
Good
8,001 reviews

Comfort

7.9

Boarding

8.1

Crew

8.5

Food

7.3

Entertainment

7.9

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
KLM
7.7
Good
1,419 reviews
Delta
7.9
Good
8,001 reviews

Comfort

7.9

Boarding

8.1

Crew

8.5

Food

7.3

Entertainment

7.9

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,035 reviews
Delta
7.9
Good
8,001 reviews

Comfort

7.9

Boarding

8.1

Crew

8.5

Food

7.3

Entertainment

7.9

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Air Canada
7.1
Good
10,465 reviews
Delta
7.9
Good
8,001 reviews

Comfort

7.9

Boarding

8.1

Crew

8.5

Food

7.3

Entertainment

7.9

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
British Airways
6.7
Okay
7,535 reviews
Delta
7.9
Good
8,001 reviews

Comfort

7.9

Boarding

8.1

Crew

8.5

Food

7.3

Entertainment

7.9

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Related info for your journey

Find useful and relevant information for your journey from Portland to Portugal. 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 from for flights from Portland to Portugal?

    For a flight from Portland to Portugal, you will be flying from Portland. Portland (PDX) is just 6.0 mi from the center of the city.

  • How long is the flight from Portland to Portugal?

    Airlines like Delta and KLM fly from Portland to Portugal in about 18h. The time it takes to get you to your destination can typically vary by up to 1h 30m. There are 5295 mi between Portland and Portugal. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines to fly from Portland to Portugal one-way?

    For one-way options, check prices for SWISS. According to our data, you can fly for as low as $323. Users have also found prices from $325 and $482 on Air Canada and KLM, respectively.

  • What are the most popular routes from Portland to Portugal?

    When deciding which route to take from Portland to Portugal consider Portland - Lisbon Humberto Delgado, Portland - Porto or Portland - Ponta Delgada Nordela as they are the most popular.

  • Can I find deals for flights from Portland to Portugal that include hotel bookings?

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

  • How can I find direct flights from Portland to Portugal?

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

  • Can I find deals for business class flights from Portland to Portugal?

    Yes. Cheapflights offers flight deals from Portland to Portugal 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 Portland to Portugal?

    Currently, November is the cheapest month in which you can book a flight from Portland to Portugal (average of $434). Flying from Portland to Portugal in June is currently the most expensive (average of $943). 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

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Alternative routes for Portland to Portugal

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Top 10 airlines flying from Portland to Portugal

Discover the top 10 airlines that operate flights from Portland to Portugal. 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 November 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$424Average$501FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$564Average$896FlexibilityNo cancel feeOn-time71%
KLMCheapest$575Average$982FlexibilityNo cancel feeOn-time75%
LufthansaCheapest$578Average$1,074FlexibilityNo cancel feeOn-time76%
DeltaCheapest$583Average$993FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$586Average$1,128FlexibilityNo cancel feeOn-time69%
Scandinavian AirlinesCheapest$595Average$720FlexibilityNo cancel feeOn-time77%
Virgin AtlanticCheapest$603Average$1,208FlexibilityNo cancel feeOn-time72%
Air CanadaCheapest$634Average$1,056FlexibilityNo cancel feeOn-time67%
British AirwaysCheapest$642Average$963FlexibilityNo cancel feeOn-time70%

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