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Portugal

$312+ 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 4/25. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — LIS
Feb 28 — Mar 71
Sat 2/28
Sat 3/7
1 adult, Economy
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Cheap 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 29, 2026.

This Delta deal was found by Cheapflights users on 1/28. 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.
Tue 3/107:00 am
PDX
-
OPO
2 stops20h 30m
Delta
Tue 3/1711:15 am
OPO
-
PDX
1 stop32h 10m
Delta
Deal found 1/28$485
This Air Canada deal was found by Cheapflights users on 1/28. 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 4/277:05 pm
PDX
-
LIS
2 stops32h 00m
Air Canada
Thu 5/75:05 am
LIS
-
PDX
2 stops17h 40m
Air Canada
Deal found 1/28$490
This KLM deal was found by Cheapflights users on 1/27. 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.
Tue 3/36:00 am
PDX
-
OPO
2 stops20h 30m
KLM
Tue 3/104:10 pm
OPO
-
PDX
1 stop27h 15m
KLM
Deal found 1/27$490
This United Airlines deal was found by Cheapflights users on 1/27. 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 4/78:05 am
PDX
-
LIS
2 stops41h 15m
United Airlines
Wed 4/1511:25 am
LIS
-
PDX
2 stops41h 17m
United Airlines
Deal found 1/27$491
This Delta deal was found by Cheapflights users on 1/28. 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.
Tue 4/711:15 pm
PDX
-
LIS
2 stops24h 45m
Delta
Thu 4/2311:55 am
LIS
-
PDX
1 stop31h 15m
Delta
Deal found 1/28$492
This Delta deal was found by Cheapflights users on 1/27. 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.
Tue 3/35:45 am
PDX
-
LIS
2 stops18h 15m
Delta
Sun 3/811:25 am
LIS
-
PDX
1 stop32h 00m
Delta
Deal found 1/27$493
This Expedia deal was found by Cheapflights users on 1/28. 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.
Tue 4/73:15 pm
PDX
-
OPO
2 stops24h 10m
Multiple Airlines
Tue 4/218:40 am
OPO
-
PDX
2 stops21h 49m
Multiple Airlines
Deal found 1/28$493
This KLM deal was found by Cheapflights users on 1/27. 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 3/11:25 pm
PDX
-
LIS
1 stop17h 10m
KLM
Sun 3/811:25 am
LIS
-
PDX
1 stop32h 00m
KLM
Deal found 1/27$494
This Delta deal was found by Cheapflights users on 1/28. 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 2/255:45 am
PDX
-
OPO
2 stops20h 45m
Delta
Tue 3/35:00 am
OPO
-
PDX
2 stops23h 30m
Delta
Deal found 1/28$494
This Air France deal was found by Cheapflights users on 1/28. 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.
Mon 3/97:00 am
PDX
-
OPO
2 stops20h 30m
Multiple Airlines
Wed 3/185:00 am
OPO
-
PDX
2 stops24h 08m
Multiple Airlines
Deal found 1/28$495
This KAYAK deal was found by Cheapflights users on 1/28. 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 4/77:15 am
PDX
-
OPO
2 stops32h 10m
Lufthansa
Fri 4/246:00 am
OPO
-
PDX
2 stops24h 29m
Lufthansa
Deal found 1/28$496
This Air Canada deal was found by Cheapflights users on 1/28. 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 4/277:05 pm
PDX
-
LIS
2 stops32h 00m
Air Canada
Mon 5/41:00 pm
LIS
-
PDX
2 stops34h 13m
Air Canada
Deal found 1/28$497

Find 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 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$485
(Delta)

One-way from

$312
(Kiwi.com)

Popular in

June

Cheapest in

November

Average price

$706
Provider with most accurate pricing for Portland-Lisbon Humberto Delgado flight deals.
Search Deals
Provider most trusted by Cheapflights users for Portland-Lisbon Humberto Delgado flights.
Search Deals
From Portland to Portugal
Search Deals
One-way flight from Portland to Portugal
Search Deals
Highest demand for flights based on searches. 26% potential increase in price ($307 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($42 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

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 29, 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

Tue 3/3

6:00 am-10:30 am

2 stops20h 30m

Porto

Tue 3/10

4:10 pm-12:25 pm

1 stop27h 15m

$490

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Thu 2/26

5:05 am-10:15 am

2 stops21h 10m

Lisbon Humberto Delgado

Thu 3/5

5:00 am-10:45 pm

2 stops25h 45m

$501

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Sat 3/7

10:19 pm-10:15 am

1 stop27h 56m

Lisbon Humberto Delgado

Thu 3/19

5:00 am-9:52 pm

2 stops23h 52m

$501

PortlandPorto

PDX - OPO

PDXOPO

Portland

Wed 2/25

8:30 am-9:30 am

2 stops17h 00m

Porto

Tue 3/3

12:35 pm-12:38 pm

3 stops32h 03m

$501

PortlandPorto

PDX - OPO

PDXOPO

Portland

Sat 3/7

10:19 pm-9:30 am

2 stops27h 11m

Porto

Wed 3/18

12:35 pm-9:54 am

2 stops28h 19m

$501

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Tue 4/7

11:15 pm-8:00 am

2 stops24h 45m

Lisbon Humberto Delgado

Thu 4/23

5:00 am-8:25 am

2 stops35h 25m

$502

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Tue 4/7

11:15 pm-8:00 am

2 stops24h 45m

Lisbon Humberto Delgado

Wed 4/22

11:55 am-2:50 pm

2 stops34h 55m

$502

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Thu 4/9

7:30 pm-10:05 am

1 stop30h 35m

Lisbon Humberto Delgado

Sat 4/18

6:55 pm-5:40 pm

1 stop30h 45m

$512

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Wed 3/4

11:59 pm-8:10 am

2 stops24h 11m

Lisbon Humberto Delgado

Sun 3/8

11:55 am-12:33 pm

2 stops31h 38m

$512

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Sun 3/1

11:59 pm-8:10 am

2 stops24h 11m

Lisbon Humberto Delgado

Sun 3/8

11:55 am-12:33 pm

2 stops31h 38m

$513

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/27

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 29, 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
8,127 reviews

Entertainment

7.8

Crew

8.5

Comfort

7.9

Overall

7.9

Boarding

8.1

Food

7.2

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
8,127 reviews
Delta
7.9
Good
8,127 reviews

Entertainment

7.8

Crew

8.5

Comfort

7.9

Overall

7.9

Boarding

8.1

Food

7.2

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
1,443 reviews
Delta
7.9
Good
8,127 reviews

Entertainment

7.8

Crew

8.5

Comfort

7.9

Overall

7.9

Boarding

8.1

Food

7.2

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
9,214 reviews
Delta
7.9
Good
8,127 reviews

Entertainment

7.8

Crew

8.5

Comfort

7.9

Overall

7.9

Boarding

8.1

Food

7.2

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
10,666 reviews
Delta
7.9
Good
8,127 reviews

Entertainment

7.8

Crew

8.5

Comfort

7.9

Overall

7.9

Boarding

8.1

Food

7.2

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
7,705 reviews
Delta
7.9
Good
8,127 reviews

Entertainment

7.8

Crew

8.5

Comfort

7.9

Overall

7.9

Boarding

8.1

Food

7.2

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 KLM, United Airlines, and Delta fly from Portland to Portugal in about 20h 30m. The time it takes to get you to your destination can typically vary by up to 4h 15m. 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 $335 and $360 on United Airlines and Delta, 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 $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 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$360Average$490FlexibilityNo cancel feeOn-time76%
DeltaCheapest$494Average$936FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$498Average$878FlexibilityNo cancel feeOn-time75%
LufthansaCheapest$501Average$848FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$524Average$685FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$529Average$925FlexibilityNo cancel feeOn-time70%
Air CanadaCheapest$584Average$991FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$586Average$1,101FlexibilityNo cancel feeOn-time69%

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