HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Portugal

$325+ 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 10/20. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — LIS
Nov 12 — Nov 191
Wed 11/12
Wed 11/19
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Portland to Portugal with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 October 13, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$517
(Gotogate)

One-way from

$325
(Air Canada)

Popular in

June

Cheapest in

November

Average price

$762
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. 25% potential increase in price ($314 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($40 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

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 October 13, 2025.

This Air Canada deal was found by Cheapflights users on 10/11. 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 11/177:00 pmPDX - LIS
2 stops30h 20mMultiple Airlines
Wed 12/35:00 amLIS - PDX
2 stops21h 30mMultiple Airlines
Deal found 10/11$527
This Cheapflightsfares deal was found by Cheapflights users on 10/11. 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.
Sun 11/99:50 amPDX - LIS
2 stops29h 40mLufthansa
Wed 11/195:00 amLIS - PDX
2 stops21h 30mLufthansa
Deal found 10/11$529
This Delta deal was found by Cheapflights users on 10/11. 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.
Mon 11/176:00 amPDX - LIS
2 stops18h 00mDelta
Wed 12/35:00 amLIS - PDX
1 stop14h 25mDelta
Deal found 10/11$531
This KLM deal was found by Cheapflights users on 10/11. 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 11/99:11 amPDX - FAO
2 stops25h 14mKLM
Sat 11/228:10 pmFAO - PDX
1 stop23h 15mKLM
Deal found 10/11$531
This KLM deal was found by Cheapflights users on 10/12. 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 11/129:59 amPDX - OPO
2 stops16h 31mKLM
Thu 12/114:10 pmOPO - PDX
1 stop27h 15mKLM
Deal found 10/12$531
This Booking.com deal was found by Cheapflights users on 10/12. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/67:00 amPDX - LIS
2 stops17h 55mMultiple Airlines
Tue 12/165:00 amLIS - PDX
2 stops21h 41mMultiple Airlines
Deal found 10/12$532
This Delta deal was found by Cheapflights users on 10/9. 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 stop18h 00mDelta
Sun 11/165:00 amOPO - PDX
1 stop14h 25mDelta
Deal found 10/9$532
This Air France deal was found by Cheapflights users on 10/12. 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.
Sat 11/156:00 amPDX - LIS
2 stops18h 00mMultiple Airlines
Fri 11/285:00 amLIS - PDX
1 stop14h 25mMultiple Airlines
Deal found 10/12$533
This Delta deal was found by Cheapflights users on 10/11. 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 11/127:05 amPDX - LIS
1 stop17h 35mDelta
Sat 11/2211:25 amLIS - PDX
1 stop32h 00mDelta
Deal found 10/11$535
This Mytrip deal was found by Cheapflights users on 10/11. 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 11/257:00 pmPDX - OPO
2 stops32h 40mMultiple Airlines
Tue 12/212:30 pmOPO - PDX
2 stops38h 00mMultiple Airlines
Deal found 10/11$535
This KAYAK deal was found by Cheapflights users on 10/11. 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.
Mon 11/103:54 pmPDX - LIS
2 stops23h 36mLufthansa
Wed 11/195:00 amLIS - PDX
2 stops21h 30mLufthansa
Deal found 10/11$537
This Delta deal was found by Cheapflights users on 10/11. 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 11/125:30 amPDX - LIS
2 stops28h 00mDelta
Wed 11/195:00 amLIS - PDX
1 stop14h 25mDelta
Deal found 10/11$539

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 October 13, 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

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Sun 11/16

12:35 am-8:00 am

2 stops23h 25m

Lisbon Humberto Delgado

Wed 12/3

5:00 am-11:25 am

1 stop14h 25m

$531

PortlandFaro

PDX - FAO

PDXFAO

Portland

Sun 11/9

1:25 pm-6:25 pm

1 stop21h 00m

Faro

Sat 11/22

8:10 pm-11:25 am

1 stop23h 15m

$531

PortlandPorto

PDX - OPO

PDXOPO

Portland

Sun 11/16

5:30 am-10:30 am

2 stops21h 00m

Porto

Thu 12/11

11:15 am-11:25 am

1 stop32h 10m

$531

PortlandPorto

PDX - OPO

PDXOPO

Portland

Wed 11/12

9:59 am-10:30 am

2 stops16h 31m

Porto

Sun 11/16

5:00 am-11:25 am

1 stop14h 25m

$531

PortlandPorto

PDX - OPO

PDXOPO

Portland

Fri 11/14

11:15 pm-10:30 am

2 stops27h 15m

Porto

Tue 12/9

11:15 am-11:25 am

1 stop32h 10m

$531

PortlandPorto

PDX - OPO

PDXOPO

Portland

Thu 11/13

11:15 pm-10:30 am

2 stops27h 15m

Porto

Thu 12/11

11:15 am-11:25 am

1 stop32h 10m

$531

PortlandPorto

PDX - OPO

PDXOPO

Portland

Tue 11/11

5:30 am-10:30 am

2 stops21h 00m

Porto

Tue 12/9

11:15 am-11:25 am

1 stop32h 10m

$531

PortlandPorto

PDX - OPO

PDXOPO

Portland

Wed 11/12

1:25 pm-3:25 pm

1 stop18h 00m

Porto

Thu 12/11

4:10 pm-11:25 am

1 stop27h 15m

$532

PortlandPorto

PDX - OPO

PDXOPO

Portland

Wed 11/12

1:25 pm-3:25 pm

1 stop18h 00m

Porto

Sun 11/16

5:00 am-11:25 am

1 stop14h 25m

$532

PortlandPorto

PDX - OPO

PDXOPO

Portland

Sun 11/16

1:25 pm-3:25 pm

1 stop18h 00m

Porto

Tue 12/9

11:15 am-11:25 am

1 stop32h 10m

$532

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/11

Showing 1-10 of 41 results
1
2
3
...
5

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 $441). 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 October 13, 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 October 13, 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
8.0
Very good
7,973 reviews

Boarding

8.2

Entertainment

7.9

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
Delta
8.0
Very good
7,973 reviews
Delta
8.0
Very good
7,973 reviews

Boarding

8.2

Entertainment

7.9

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
KLM
7.7
Good
1,402 reviews
Delta
8.0
Very good
7,973 reviews

Boarding

8.2

Entertainment

7.9

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
United Airlines
7.4
Good
8,973 reviews
Delta
8.0
Very good
7,973 reviews

Boarding

8.2

Entertainment

7.9

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
Air Canada
7.1
Good
10,286 reviews
Delta
8.0
Very good
7,973 reviews

Boarding

8.2

Entertainment

7.9

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
British Airways
6.7
Okay
7,451 reviews
Delta
8.0
Very good
7,973 reviews

Boarding

8.2

Entertainment

7.9

Crew

8.5

Overall

8.0

Food

7.3

Comfort

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.

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, KLM, and United Airlines fly from Portland to Portugal in about 17h 55m. The time it takes to get you to your destination can typically vary by up to 5h 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 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 $441). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Portland to Portugal

See prices for flight routes from nearby airports that may be better suited for you.
Portland to Heathrow flights
Portland to Charles de Gaulle flights
Portland to Dublin flights
Portland to Gatwick flights
Portland to Amsterdam flights
Portland to Madrid flights
Portland to Leonardo da Vinci/Fiumicino flights
Portland to Orly flights
Portland to London City flights
Portland to Athens flights
Portland to Lisbon flights
Portland to Vicenza flights
Portland to Barcelona-El Prat flights
Portland to Istanbul flights
Portland to Frankfurt flights
Portland to Bruxelles-National flights
Portland to Linate flights
Portland to Malpensa flights
Boise to Leonardo da Vinci/Fiumicino flights
Portland to Glasgow Intl flights
Portland to Edinburgh flights
Portland to Stansted flights
Portland to Vienna flights
Boise to Barcelona-El Prat flights
Portland to Copenhagen flights
Portland to Naples flights
Portland to Manchester flights
Portland to Sabiha Gokcen flights
Portland to Berlin flights
Portland to Zurich flights
Boise to Heathrow flights
Boise to Dublin flights
Portland to Prague flights
Boise to Charles de Gaulle flights
Portland to Málaga flights
Portland to Oslo Gardermoen flights
Redmond to Heathrow flights
Portland to Otopeni Intl flights
Boise to Lisbon flights
Portland to Seville flights
Portland to Luton flights
Portland to Florence flights
Portland to Frederic Chopin flights
Eugene to Frankfurt flights
Portland to Munich flights
Portland to Budapest flights
Redmond to Barcelona-El Prat flights
Portland to Lyon flights
Boise to Madrid flights
Portland to Arlanda flights

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 October 13, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$434Average$507FlexibilityNo cancel feeOn-time76%
Scandinavian AirlinesCheapest$563Average$720FlexibilityNo cancel feeOn-time77%
American AirlinesCheapest$564Average$896FlexibilityNo cancel feeOn-time71%
KLMCheapest$578Average$1,018FlexibilityNo cancel feeOn-time75%
LufthansaCheapest$578Average$1,073FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$592Average$1,122FlexibilityNo cancel feeOn-time69%
Virgin AtlanticCheapest$595Average$1,010FlexibilityNo cancel feeOn-time72%
DeltaCheapest$596Average$1,005FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$623Average$1,057FlexibilityNo cancel feeOn-time67%
British AirwaysCheapest$652Average$974FlexibilityNo cancel feeOn-time70%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
Site
©2025 Cheapflights