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$326+ Cheap flights from Portland (PDX) to Lisbon (LIS)

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 11/1. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — LIS
Nov 21 — Nov 281
Fri 11/21
Fri 11/28
1 adult, Economy
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1. Tell us where you want to go

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Cheapflights Tip: The best prices from Portland to Lisbon Humberto Delgado are usually found in November or February, booked 68 days in advance, depart on a Wednesday or Tuesday and return on a Wednesday

Find flight deals from Portland to Lisbon

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

This Mytrip deal was found by Cheapflights users on 10/21. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/243:15 pmPDX - LIS
2 stops34h 05mAir Canada
Sun 12/710:50 amLIS - PDX
2 stops35h 50mAir Canada
Deal found 10/21$504
This Air Canada deal was found by Cheapflights users on 10/20. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/243:15 pmPDX - LIS
2 stops34h 05mMultiple Airlines
Sun 12/75:00 amLIS - PDX
2 stops21h 30mMultiple Airlines
Deal found 10/20$526
This Air Canada deal was found by Cheapflights users on 10/21. 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 Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/267:00 pmPDX - LIS
2 stops30h 20mAir Canada
Sun 12/75:00 amLIS - PDX
2 stops36h 15mAir Canada
Deal found 10/21$527
This Air Canada deal was found by Cheapflights users on 10/21. 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 Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/269:50 amPDX - LIS
2 stops39h 30mAir Canada
Tue 12/911:20 amLIS - PDX
2 stops39h 25mAir Canada
Deal found 10/21$528
This Delta deal was found by Cheapflights users on 10/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/247:05 amPDX - LIS
1 stop17h 55mDelta
Sun 12/75:00 amLIS - PDX
1 stop14h 25mDelta
Deal found 10/20$531
This United Airlines deal was found by Cheapflights users on 10/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/278:20 amPDX - LIS
1 stop17h 55mUnited Airlines
Tue 12/911:20 amLIS - PDX
2 stops32h 28mUnited Airlines
Deal found 10/21$532
This Air Canada deal was found by Cheapflights users on 10/21. 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 Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/273:15 pmPDX - LIS
2 stops34h 05mAir Canada
Sun 12/75:00 amLIS - PDX
2 stops36h 15mAir Canada
Deal found 10/21$533
This Air Canada deal was found by Cheapflights users on 10/21. 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 Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/269:50 amPDX - LIS
2 stops39h 30mAir Canada
Fri 12/511:20 amLIS - PDX
2 stops39h 25mAir Canada
Deal found 10/21$534
This KLM deal was found by Cheapflights users on 10/21. 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 11/287:05 amPDX - LIS
1 stop17h 55mKLM
Fri 12/55:00 amLIS - PDX
1 stop14h 25mKLM
Deal found 10/21$535
This Air France deal was found by Cheapflights users on 10/20. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/177:05 amPDX - LIS
1 stop17h 55mMultiple Airlines
Mon 11/245:00 amLIS - PDX
1 stop14h 25mMultiple Airlines
Deal found 10/20$536
This Delta deal was found by Cheapflights users on 10/21. 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.
Tue 11/255:30 amPDX - LIS
2 stops25h 40mDelta
Thu 12/411:25 amLIS - PDX
1 stop32h 00mDelta
Deal found 10/21$539

Cheap flight deals from Portland to Lisbon

Discover tips and strategies to find the most affordable flight options for your journey from Portland (PDX) to Lisbon (LIS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated October 22, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$504
(Mytrip)

One-way from

$326
(United Airlines)

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 Lisbon Humberto Delgado
Search Deals
One-way flight from Portland to Lisbon Humberto Delgado
Search Deals
Highest demand for flights based on searches. 25% potential increase in price ($310 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

Cheapflights Fare Finder

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

Fly from

Portland

Fly to

Lisbon

Route

Depart

Return

Price

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Mon 11/24

6:00 am-8:00 am

2 stops18h 00m

Lisbon Humberto Delgado

Sun 12/7

5:00 am-11:25 am

1 stop14h 25m

$531

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Wed 2/18

7:00 am-8:00 am

1 stop17h 00m

Lisbon Humberto Delgado

Wed 2/25

5:00 am-11:25 am

1 stop14h 25m

$535

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Thu 1/15

5:00 am-9:20 am

2 stops20h 20m

Lisbon Humberto Delgado

Wed 1/21

11:20 am-6:48 pm

3 stops39h 28m

$539

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Mon 3/9

7:10 am-3:10 pm

2 stops25h 00m

Lisbon Humberto Delgado

Mon 3/16

5:00 am-12:25 pm

1 stop14h 25m

$539

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Mon 3/9

7:10 am-3:10 pm

2 stops25h 00m

Lisbon Humberto Delgado

Sun 3/15

5:00 am-12:25 pm

1 stop14h 25m

$539

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Wed 2/18

7:00 am-3:10 pm

2 stops24h 10m

Lisbon Humberto Delgado

Wed 2/25

5:00 am-11:25 am

1 stop14h 25m

$539

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Sun 3/8

7:10 am-3:10 pm

2 stops25h 00m

Lisbon Humberto Delgado

Thu 3/19

11:25 am-12:25 pm

1 stop32h 00m

$539

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Mon 3/2

11:10 am-5:30 pm

2 stops22h 20m

Lisbon Humberto Delgado

Mon 3/16

5:00 am-12:25 pm

1 stop14h 25m

$539

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Wed 11/26

10:10 pm-8:00 am

2 stops25h 50m

Lisbon Humberto Delgado

Thu 12/4

11:25 am-11:25 am

1 stop32h 00m

$540

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Wed 11/26

11:15 pm-8:00 am

2 stops24h 45m

Lisbon Humberto Delgado

Sun 12/7

5:00 am-11:25 am

1 stop14h 25m

$540

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/20

Showing 1-10 of 15 results
1
2

Compare providers for flights from Portland to Lisbon

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Portland to Lisbon in October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Portland-Lisbon flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Portland-Lisbon flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Portland-Lisbon flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Portland-Lisbon flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Portland-Lisbon flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Portland to Lisbon

Have a flexible travel schedule? Discover the best time to fly to Lisbon 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 Lisbon

How far ahead should I book a flight from Portland to Lisbon?

Use this chart to determine the optimal time to book a round-trip flight from Portland to Lisbon. Price data was last updated on October 17, 2025.

The price you pay for your flight from Portland to Lisbon may vary depending on when you book. For the best chance of a lower fare, look to book 68 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, November is the cheapest month in which you can book a flight from Portland to Lisbon (average of $443). Flying from Portland to Lisbon in June is currently the most expensive (average of $1,003). 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 LIS?

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

A simple way to save on the total cost of your ticket is to fly from Portland to Lisbon in the afternoon. If you’re flexible enough to do this you can expect to save up to 36% on your trip compared to booking a flight in the evening.

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

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

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

How much does it cost to fly round-trip from Portland to Lisbon?

Reviews of airlines servicing Lisbon

Get insights into the airlines that provide service to Lisbon. 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 Lisbon. Reviews last updated October 22, 2025.
Read reviews from past customers who have flown Delta, KLM, and United Airlines from Portland to Lisbon. 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
7,979 reviews

Food

7.3

Comfort

7.9

Entertainment

7.9

Crew

8.5

Overall

7.9

Boarding

8.2

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
7.9
Good
7,979 reviews
Delta
7.9
Good
7,979 reviews

Food

7.3

Comfort

7.9

Entertainment

7.9

Crew

8.5

Overall

7.9

Boarding

8.2

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
1,404 reviews
Delta
7.9
Good
7,979 reviews

Food

7.3

Comfort

7.9

Entertainment

7.9

Crew

8.5

Overall

7.9

Boarding

8.2

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
8,988 reviews
Delta
7.9
Good
7,979 reviews

Food

7.3

Comfort

7.9

Entertainment

7.9

Crew

8.5

Overall

7.9

Boarding

8.2

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
10,342 reviews
Delta
7.9
Good
7,979 reviews

Food

7.3

Comfort

7.9

Entertainment

7.9

Crew

8.5

Overall

7.9

Boarding

8.2

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
7,467 reviews
Delta
7.9
Good
7,979 reviews

Food

7.3

Comfort

7.9

Entertainment

7.9

Crew

8.5

Overall

7.9

Boarding

8.2

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 Lisbon. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Portland to Lisbon?

    Departing from Portland to Lisbon will take you 17h. The distance between Portland and Lisbon is about 5295 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines flying from Portland to Lisbon round-trip?

    According to our current data, Icelandair ($434), American Airlines ($564), and KLM ($577) offers the cheapest pricing from Portland to Lisbon. Users have found that Icelandair is 52% cheaper than the other options available to this destination.

  • Where are the most common layover locations when flying from Portland to Lisbon?

    Of the flights from Portland to Lisbon that have layovers, most of them stop in London. London is followed by Amsterdam in terms of the most popular layover location on flights from Portland to Lisbon.

  • What are some popular things to do or see while on a layover in London?

    London travelers tend to visit Hyde Park, Buckingham Palace, and Piccadilly Circus more than anywhere else. Hyde Park, Buckingham Palace, and Piccadilly Circus can be accessed by traveling approximately 12.5 mi, 13.7 mi, and 14.1 mi, respectively from London Heathrow. Those on a layover in London in need of a rental car can book one at London Heathrow for about $30.

  • What are some popular points of interest to see during a layover in Amsterdam?

    Amsterdam travelers tend to visit Museumplein, Van Gogh Museum, and De Dam more than any other notable places. Museumplein, Van Gogh Museum and De Dam are located about 6.0 mi, 6.0 mi, and 7.0 mi, respectively from Amsterdam Schiphol if you are interested in checking them out. Travelers can book a car rental at Amsterdam Schiphol for about $48 per day to make their sightseeing more efficient.

  • Where are the least popular layover locations for Portland to Lisbon flights?

    Portland to Lisbon flights that have layovers will least frequently stop in New York.

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

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

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

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

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

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

    Currently, November is the cheapest month in which you can book a flight from Portland to Lisbon (average of $443). Flying from Portland to Lisbon in June is currently the most expensive (average of $1,003). 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 Lisbon?

Book flights to Lisbon if you plan to visit one of these locations
Sintra
Fátima
Oeiras
Nazaré
Ericeira
Costa da Caparica
Torres Vedras
Beja
Sesimbra
Colares

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Alternative routes for Portland to Lisbon

See prices for flight routes from nearby airports that may be better suited for you.
Boise to Lisbon flights
Eugene to Lisbon flights
Portland to Porto flights
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Top 10 airlines flying from Portland to Lisbon

Discover the top 10 airlines that operate flights from Portland to Lisbon. 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 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$434Average$507FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$564Average$896FlexibilityNo cancel feeOn-time71%
KLMCheapest$577Average$927FlexibilityNo cancel feeOn-time75%
LufthansaCheapest$578Average$1,074FlexibilityNo cancel feeOn-time76%
Scandinavian AirlinesCheapest$581Average$726FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$589Average$829FlexibilityNo cancel feeOn-time69%
Virgin AtlanticCheapest$603Average$1,208FlexibilityNo cancel feeOn-time72%
DeltaCheapest$605Average$925FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$623Average$1,045FlexibilityNo cancel feeOn-time67%
British AirwaysCheapest$652Average$939FlexibilityNo cancel feeOn-time70%

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