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Portugal

$281+ 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 3/31. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — LIS
Feb 17 — Feb 241
Tue 2/17
Tue 2/24
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 January 18, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$371
(oojo)

One-way from

$281
(KLM)

Popular in

June

Cheapest in

November

Average price

$706
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. 27% potential increase in price ($320 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($41 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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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 January 18, 2026.

This oojo deal was found by Cheapflights users on 1/18. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/72:45 pm
PDX
-
LIS
1 stop21h 35m
Icelandair
Sun 3/229:20 pm
LIS
-
PDX
1 stop27h 40m
Icelandair
Deal found 1/18$371
This oojo deal was found by Cheapflights users on 1/16. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/72:45 pm
PDX
-
LIS
1 stop21h 35m
Icelandair
Thu 3/199:20 pm
LIS
-
PDX
1 stop27h 40m
Icelandair
Deal found 1/16$372
This oojo deal was found by Cheapflights users on 1/17. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/93:30 pm
PDX
-
LIS
1 stop14h 20m
Icelandair
Thu 5/2110:20 pm
LIS
-
PDX
1 stop27h 35m
Icelandair
Deal found 1/17$406
This United Airlines deal was found by Cheapflights users on 1/17. 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.
Sun 2/2211:59 pm
PDX
-
OPO
2 stops25h 31m
United Airlines
Tue 3/1012:35 pm
OPO
-
PDX
2 stops30h 58m
United Airlines
Deal found 1/17$436
This Finnair deal was found by Cheapflights users on 1/17. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/36:40 am
PDX
-
LIS
2 stops24h 45m
Finnair
Tue 3/104:10 pm
LIS
-
PDX
2 stops36h 52m
Finnair
Deal found 1/17$447
This Iberia deal was found by Cheapflights users on 1/17. 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.
Wed 4/87:30 pm
PDX
-
LIS
1 stop19h 45m
Multiple Airlines
Wed 4/296:35 am
LIS
-
PDX
2 stops23h 03m
Multiple Airlines
Deal found 1/17$448
This British Airways deal was found by Cheapflights users on 1/18. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/25:45 pm
PDX
-
OPO
1 stop15h 50m
British Airways
Wed 3/118:20 am
OPO
-
PDX
2 stops22h 55m
British Airways
Deal found 1/18$448
This United Airlines deal was found by Cheapflights users on 1/17. 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 3/37:30 am
PDX
-
OPO
2 stops18h 00m
United Airlines
Tue 3/1012:35 pm
OPO
-
PDX
2 stops30h 16m
United Airlines
Deal found 1/17$450
This Cheapflightsfares deal was found by Cheapflights users on 1/18. 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.
Wed 3/116:45 pm
PDX
-
LIS
1 stop20h 05m
British Airways
Wed 3/187:05 am
LIS
-
PDX
1 stop16h 50m
British Airways
Deal found 1/18$451
This British Airways deal was found by Cheapflights users on 1/18. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/15:40 am
PDX
-
OPO
2 stops27h 00m
British Airways
Tue 3/108:20 am
OPO
-
PDX
2 stops23h 00m
British Airways
Deal found 1/18$452
This American Airlines deal was found by Cheapflights users on 1/15. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/25:45 pm
PDX
-
OPO
2 stops18h 15m
Multiple Airlines
Mon 3/94:40 pm
OPO
-
PDX
2 stops27h 21m
Multiple Airlines
Deal found 1/15$453
This FlightHub deal was found by Cheapflights users on 1/16. 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.
Sun 10/257:10 pm
PDX
-
LIS
2 stops31h 10m
Air Canada
Tue 11/311:20 am
LIS
-
PDX
2 stops54h 05m
Air Canada
Deal found 1/16$454

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 January 18, 2026.
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 3/4

5:45 pm-4:45 pm

1 stop15h 00m

Porto

Wed 3/11

8:20 am-12:15 am

2 stops22h 55m

$448

PortlandPorto

PDX - OPO

PDXOPO

Portland

Mon 3/2

12:04 pm-5:35 pm

2 stops21h 31m

Porto

Wed 3/11

8:20 am-12:15 am

2 stops22h 55m

$452

PortlandPorto

PDX - OPO

PDXOPO

Portland

Tue 3/3

6:40 am-5:45 pm

2 stops27h 05m

Porto

Mon 3/9

12:25 pm-7:16 pm

2 stops37h 51m

$452

PortlandPorto

PDX - OPO

PDXOPO

Portland

Tue 3/3

12:04 pm-5:45 pm

2 stops21h 41m

Porto

Wed 3/11

8:20 am-12:15 am

2 stops22h 55m

$452

PortlandPorto

PDX - OPO

PDXOPO

Portland

Mon 3/2

5:45 pm-8:00 pm

2 stops18h 15m

Porto

Mon 3/9

4:40 pm-1:01 pm

2 stops27h 21m

$453

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Sun 2/15

11:59 pm-8:10 am

2 stops24h 11m

Lisbon Humberto Delgado

Fri 2/27

10:15 am-10:40 pm

2 stops20h 25m

$462

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Sun 2/15

11:48 am-9:45 pm

2 stops25h 57m

Lisbon Humberto Delgado

Thu 2/26

6:35 pm-3:55 pm

1 stop29h 20m

$465

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Sun 2/15

11:48 am-9:45 pm

2 stops25h 57m

Lisbon Humberto Delgado

Wed 2/25

7:05 am-3:55 pm

1 stop16h 50m

$465

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Sun 2/15

11:48 am-9:45 pm

2 stops25h 57m

Lisbon Humberto Delgado

Fri 2/27

7:05 am-3:55 pm

1 stop16h 50m

$465

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Wed 4/15

8:00 am-11:15 pm

2 stops31h 15m

Lisbon Humberto Delgado

Tue 4/28

6:45 pm-5:40 pm

1 stop30h 55m

$465

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/16

Showing 1-10 of 52 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 $845). 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.

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 January 18, 2026.
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
8,075 reviews

Comfort

7.9

Boarding

8.1

Crew

8.5

Entertainment

7.8

Food

7.2

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
8,075 reviews
Delta
7.9
Good
8,075 reviews

Comfort

7.9

Boarding

8.1

Crew

8.5

Entertainment

7.8

Food

7.2

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
1,441 reviews
Delta
7.9
Good
8,075 reviews

Comfort

7.9

Boarding

8.1

Crew

8.5

Entertainment

7.8

Food

7.2

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
9,176 reviews
Delta
7.9
Good
8,075 reviews

Comfort

7.9

Boarding

8.1

Crew

8.5

Entertainment

7.8

Food

7.2

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
10,632 reviews
Delta
7.9
Good
8,075 reviews

Comfort

7.9

Boarding

8.1

Crew

8.5

Entertainment

7.8

Food

7.2

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
7,687 reviews
Delta
7.9
Good
8,075 reviews

Comfort

7.9

Boarding

8.1

Crew

8.5

Entertainment

7.8

Food

7.2

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 British Airways, United Airlines, and KLM fly from Portland to Portugal in about 15h. The time it takes to get you to your destination can typically vary by up to 9h 11m. There are 5183 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 Icelandair. According to our data, you can fly for as low as $232. Users have also found prices from $329 and $335 on Air Canada and United Airlines, 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 - Faro 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 $845). 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

See prices for flight routes from nearby airports that may be better suited for you.
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Top 8 airlines flying from Portland to Portugal

Discover the top 8 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 January 18, 2026.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$360Average$490FlexibilityNo cancel feeOn-time76%
DeltaCheapest$494Average$924FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$498Average$876FlexibilityNo cancel feeOn-time75%
LufthansaCheapest$501Average$972FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$524Average$685FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$579Average$935FlexibilityNo cancel feeOn-time70%
Air CanadaCheapest$584Average$1,027FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$586Average$1,105FlexibilityNo cancel feeOn-time69%

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