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 ($391), KLM ($558), and American Airlines ($564) offers the cheapest pricing from Portland to Lisbon. Users have found that Icelandair is 56% cheaper than the other options available to this destination.

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

$232 is the cheapest one-way deal found within the past few days, from Icelandair. You may also be able to find cheap deals on Air Canada and United Airlines, with prices starting from $329 and $335, respectively.

In terms of precipitation, rainfall in Lisbon ranges from 0.2 - 4.8 inches per month. December is typically the wettest month, when rainfall can reach 4.8 in. July is typically the driest time to visit Lisbon when rainfall is around 0.2 in.

If weather is an important factor for your trip to Lisbon, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).

What are the most popular airlines that fly from Portland to Lisbon?

Before booking your flight from Portland to Lisbon check out the most popular airlines for this route: British Airways, Delta or United Airlines.

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.

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.

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 $29.

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 $44 per day to make their sightseeing more efficient.

Most accurate provider : When it comes to deals on Portland-Lisbon flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Portland-Lisbon flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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.

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.

$312+ Flights from Portland to Lisbon

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

Airfare is below average for this route at the moment. Portland to Lisbon flights typically cost between $721 and $1,309 in March. The cheapest round-trip price found within the last 3 days was $370 on Icelandair (Mar 7-Mar 19).

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Find cheap flights from Portland to Lisbon 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.

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Cheapflights Tip: The best prices from Portland to Lisbon Humberto Delgado are usually found in November or February, booked 10 days in advance, depart on a Wednesday or Tuesday and return on a Wednesday

Cheap 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 December 4, 2025.

Fri 12/267:00 pmPDX - LIS

2 stops54h 20mMultiple Airlines

Tue 1/276:10 amLIS - PDX

2 stops40h 30mMultiple Airlines

Deal found 12/2

$478

Fri 12/267:00 pmPDX - LIS

2 stops54h 20mAir Canada

Tue 1/276:10 amLIS - PDX

2 stops35h 05mAir Canada

Deal found 12/4

$554

Wed 12/315:45 pmPDX - LIS

1 stop32h 10mBritish Airways

Sun 1/113:55 pmLIS - PDX

1 stop32h 00mBritish Airways

Deal found 12/2

$600

Wed 12/317:00 amPDX - LIS

2 stops15h 55mMultiple Airlines

Sun 1/1111:05 amLIS - PDX

2 stops19h 06mMultiple Airlines

Deal found 12/3

$625

Sun 12/147:40 amPDX - LIS

2 stops17h 25mMultiple Airlines

Tue 12/2311:05 amLIS - PDX

2 stops31h 55mMultiple Airlines

Deal found 12/3

$629

Tue 12/27:00 pmPDX - LIS

2 stops29h 55mMultiple Airlines

Tue 12/96:10 amLIS - PDX

2 stops40h 30mMultiple Airlines

Deal found 12/1

$639

Tue 12/27:43 pmPDX - LIS

2 stops28h 27mUnited Airlines

Fri 1/1611:20 amLIS - PDX

3 stops39h 36mUnited Airlines

Deal found 12/2

$647

Tue 12/210:10 pmPDX - LIS

2 stops28h 25mKLM

Fri 1/165:00 amLIS - PDX

1 stop14h 25mKLM

Deal found 12/2

$649

Best flights from Portland to Lisbon
Discover carefully curated flight deals from Portland to Lisbon that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 4, 2025.

Wed 1/145:00 amPDX - LIS

2 stops20h 20mUnited Airlines

Wed 1/2111:20 amLIS - PDX

3 stops39h 35mUnited Airlines

Deal found 12/2

$446

Tue 1/206:00 amPDX - LIS

2 stops19h 05mMultiple Airlines

Tue 1/274:10 pmLIS - PDX

2 stops34h 41mMultiple Airlines

Deal found 12/3

$449

Mon 1/126:00 amPDX - LIS

2 stops22h 05mBritish Airways

Thu 1/223:55 pmLIS - PDX

1 stop32h 00mBritish Airways

Deal found 12/3

$453

Tue 1/277:00 amPDX - LIS

1 stop17h 00mVirgin Atlantic

Tue 2/310:00 amLIS - PDX

1 stop18h 25mVirgin Atlantic

Deal found 12/3

$456

Mon 1/267:00 amPDX - LIS

1 stop17h 00mDelta

Wed 2/410:00 amLIS - PDX

1 stop18h 25mDelta

Deal found 12/2

$456

Tue 1/277:00 amPDX - LIS

1 stop17h 00mDelta

Wed 2/410:00 amLIS - PDX

1 stop18h 25mDelta

Deal found 12/2

$456

Wed 1/287:00 amPDX - LIS

1 stop17h 00mVirgin Atlantic

Fri 2/610:00 amLIS - PDX

1 stop18h 25mVirgin Atlantic

Deal found 12/2

$456

Wed 3/45:45 pmPDX - LIS

1 stop20h 05mBritish Airways

Thu 3/196:35 pmLIS - PDX

1 stop29h 20mBritish Airways

Deal found 12/2

$458

Wed 2/188:30 amPDX - LIS

2 stops16h 50mMultiple Airlines

Wed 2/2511:20 amLIS - PDX

2 stops29h 55mMultiple Airlines

Deal found 12/3

$459

Wed 1/285:00 amPDX - LIS

2 stops19h 10mUnited Airlines

Sun 2/110:50 amLIS - PDX

2 stops39h 20mUnited Airlines

Deal found 12/1

$469

Wed 1/287:00 amPDX - LIS

1 stop17h 00mDelta

Sun 2/15:00 amLIS - PDX

1 stop14h 25mDelta

Deal found 12/1

$461

Last-minute flights from Portland to Lisbon
Discover last-minute flight deals from Portland to Lisbon. Data last updated December 4, 2025 and is based on user searches.

Sat 1/101:35 pmPDX - LIS

3 stops34h 35mUnited Airlines

Fri 1/2310:15 amLIS - PDX

2 stops22h 28mUnited Airlines

Deal found 12/2

$448

Mon 1/129:50 amPDX - LIS

2 stops39h 30mAir Canada

Thu 1/2211:20 amLIS - PDX

2 stops43h 12mAir Canada

Deal found 12/2

$435

Mon 1/126:00 amPDX - LIS

2 stops22h 05mBritish Airways

Thu 1/223:55 pmLIS - PDX

1 stop32h 00mBritish Airways

Deal found 12/3

$453

Wed 1/145:00 amPDX - LIS

2 stops20h 20mUnited Airlines

Wed 1/2111:20 amLIS - PDX

2 stops39h 36mUnited Airlines

Deal found 12/2

$446

Wed 1/145:45 pmPDX - LIS

1 stop20h 05mMultiple Airlines

Wed 1/218:20 amLIS - PDX

2 stops21h 57mMultiple Airlines

Deal found 12/2

$447

Thu 1/159:50 amPDX - LIS

2 stops15h 30mMultiple Airlines

Thu 1/225:00 amLIS - PDX

2 stops21h 30mMultiple Airlines

Deal found 12/2

$452

Tue 1/206:00 amPDX - LIS

2 stops19h 05mMultiple Airlines

Tue 1/274:10 pmLIS - PDX

2 stops34h 41mMultiple Airlines

Deal found 12/3

$449

Tue 1/277:00 pmPDX - LIS

2 stops30h 20mAir Canada

Tue 2/311:20 amLIS - PDX

2 stops39h 36mAir Canada

Deal found 12/3

$438

Tue 1/277:00 amPDX - LIS

1 stop17h 00mDelta

Wed 2/410:00 amLIS - PDX

1 stop18h 25mDelta

Deal found 12/2

$456

Wed 1/287:00 amPDX - LIS

2 stops18h 20mAir Canada

Thu 2/511:20 amLIS - PDX

2 stops39h 36mAir Canada

Deal found 12/2

$443

Wed 1/288:30 amPDX - LIS

2 stops15h 40mUnited Airlines

Fri 2/610:55 amLIS - PDX

2 stops40h 01mUnited Airlines

Deal found 12/2

$444

One-way flights from Portland to Lisbon
Search for one-way flight options from Portland to Lisbon. Find affordable one-way fares based on user searches. Data last updated December 4, 2025.

Tue 1/139:50 amPDX - LIS

2 stops15h 30mMultiple Airlines

Deal found 12/2

$312

Sun 1/115:31 pmPDX - LIS

3 stops57h 49mMultiple Airlines

Deal found 12/4

$313

Fri 1/163:15 pmPDX - LIS

2 stops33h 40mAir Canada

Deal found 12/2

$327

Tue 12/96:00 amPDX - LIS

3 stops20h 15mUnited Airlines

Deal found 12/2

$330

Fri 1/161:24 pmPDX - LIS

3 stops35h 31mUnited Airlines

Deal found 12/2

$331

Sun 2/151:25 pmPDX - LIS

1 stop17h 10mDelta

Deal found 12/2

$335

Tue 1/131:24 pmPDX - LIS

3 stops35h 56mUnited Airlines

Deal found 12/3

$336

Fri 1/161:25 pmPDX - LIS

1 stop17h 10mKLM

Deal found 12/2

$385

Mon 12/152:45 pmPDX - LIS

3 stops45h 45mMultiple Airlines

Deal found 12/4

$392

Sun 1/115:45 pmPDX - LIS

1 stop16h 00mBritish Airways

Deal found 12/4

$404

Find flight deals from Portland to Lisbon

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$369 (Mytrip)
One-way from	$312 (Mytrip)
Popular in	June
Cheapest in	November
Average price	$845

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. 26% potential increase in price ($315 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease ($39 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in December 2025

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Wed 1/14

5:00 am-9:20 am

2 stops20h 20m

Lisbon Humberto Delgado

Wed 1/21

11:20 am-6:55 pm

3 stops39h 35m

$446

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Tue 1/20

6:00 am-9:05 am

2 stops19h 05m

Lisbon Humberto Delgado

Tue 1/27

4:10 pm-6:51 pm

2 stops34h 41m

$449

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Mon 1/12

6:00 am-12:05 pm

2 stops22h 05m

Lisbon Humberto Delgado

Thu 1/22

3:55 pm-3:55 pm

1 stop32h 00m

$453

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Tue 1/27

7:00 am-8:00 am

1 stop17h 00m

Lisbon Humberto Delgado

Tue 2/3

10:00 am-8:25 pm

1 stop18h 25m

$456

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Mon 1/26

7:00 am-8:00 am

1 stop17h 00m

Lisbon Humberto Delgado

Wed 2/4

10:00 am-8:25 pm

1 stop18h 25m

$456

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Tue 1/27

7:00 am-8:00 am

1 stop17h 00m

Lisbon Humberto Delgado

Wed 2/4

10:00 am-8:25 pm

1 stop18h 25m

$456

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Wed 1/28

7:00 am-8:00 am

1 stop17h 00m

Lisbon Humberto Delgado

Fri 2/6

10:00 am-8:25 pm

1 stop18h 25m

$456

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Wed 3/4

5:45 pm-9:50 pm

1 stop20h 05m

Lisbon Humberto Delgado

Thu 3/19

6:35 pm-4:55 pm

1 stop29h 20m

$458

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Wed 2/18

8:30 am-9:20 am

2 stops16h 50m

Lisbon Humberto Delgado

Wed 2/25

11:20 am-9:15 am

2 stops29h 55m

$459

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

$461

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/2

Showing 1-10 of 19 results

Compare providers for flights from Portland to Lisbon

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Portland to Lisbon in December.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy2 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*1 star
AranGrant	Price Accuracy2 stars	Trust Score*3 stars
eDreams	Price Accuracy3 stars	Trust 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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Portland-Lisbon flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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?

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 8 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 $434). Flying from Portland to Lisbon in June is currently the most expensive (average of $971). 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?

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?

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

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

8,011 reviews

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

8,011 reviews

Delta

7.9

Good

8,011 reviews

Reviews

1 / 20

6.0

Good

Jim,Nov 2025

AVL - ATL

KLM

7.7

Good

1,430 reviews

Delta

7.9

Good

8,011 reviews

Reviews

1 / 20

6.0

Good

Jim,Nov 2025

AVL - ATL

United Airlines

7.4

Good

9,066 reviews

Delta

7.9

Good

8,011 reviews

Reviews

1 / 20

6.0

Good

Jim,Nov 2025

AVL - ATL

Air Canada

7.1

Good

10,500 reviews

Delta

7.9

Good

8,011 reviews

Reviews

1 / 20

6.0

Good

Jim,Nov 2025

AVL - ATL

British Airways

6.7

Okay

7,562 reviews

Delta

7.9

Good

8,011 reviews

Reviews

1 / 20

6.0

Good

Jim,Nov 2025

AVL - ATL

Related info for your journey

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 ($391), KLM ($558), and American Airlines ($564) offers the cheapest pricing from Portland to Lisbon. Users have found that Icelandair is 56% cheaper than the other options available to this destination.
What are the cheapest airlines to fly from Portland to Lisbon one-way?
$232 is the cheapest one-way deal found within the past few days, from Icelandair. You may also be able to find cheap deals on Air Canada and United Airlines, with prices starting from $329 and $335, respectively.
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 $29.
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 $44 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 $434). Flying from Portland to Lisbon in June is currently the most expensive (average of $971). 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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Ericeira

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Torres Vedras

Beja

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Sesimbra

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Alternative routes for Portland to Lisbon

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Eugene to Porto flights

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Redmond to Lisbon flights

Other flights to Lisbon

Top 9 airlines flying from Portland to Lisbon

Airline	Cheapest	Average	Flexibility	On-time
Icelandair	Cheapest$391	Average$496	FlexibilityNo cancel fee	On-time76%
KLM	Cheapest$558	Average$867	FlexibilityNo cancel fee	On-time75%
American Airlines	Cheapest$564	Average$793	FlexibilityNo cancel fee	On-time71%
Delta	Cheapest$575	Average$902	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$586	Average$831	FlexibilityNo cancel fee	On-time69%
Virgin Atlantic	Cheapest$603	Average$1,208	FlexibilityNo cancel fee	On-time72%
Air Canada	Cheapest$634	Average$1,032	FlexibilityNo cancel fee	On-time67%
British Airways	Cheapest$650	Average$920	FlexibilityNo cancel fee	On-time70%
Lufthansa	Cheapest$692	Average$1,074	FlexibilityNo cancel fee	On-time76%

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$312+ 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 1/13. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Portland to Lisbon with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from Portland to Lisbon Humberto Delgado are usually found in November or February, booked 10 days in advance, depart on a Wednesday or Tuesday and return on a Wednesday

Cheap flight deals from Portland to Lisbon

Cheapest flights from Portland to LisbonExplore 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 December 4, 2025.

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 December 4, 2025.

Find flight deals from Portland to Lisbon

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

Use the filters below to find and compare flights from Portland to Lisbon that are best for you.

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 December.

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.

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?

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

What is the cheapest time of day to fly from PDX to LIS?

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

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

Reviews of airlines servicing Lisbon

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.

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?

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

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

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

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

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

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

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Alternative routes for Portland to Lisbon

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Top 9 airlines flying from Portland to Lisbon

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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 December 4, 2025.