How long is the flight from Portland to Lisbon?

Airlines like Delta and United Airlines fly from Portland to Lisbon in about 17h 20m. The time it takes to get you to your destination can typically vary by up to 17h 15m. The distance between Portland and Lisbon is about 5295 mi. This flight may include one or multiple stops.

In terms of precipitation, rainfall in Lisbon ranges from 6.0 - 122.0 inches per month. December is typically the wettest month, when rainfall can reach 122.0 mm. July is typically the driest time to visit Lisbon when rainfall is around 6.0 mm.

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 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 11.0 C).

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

When flying from Portland to Lisbon, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 holiday 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.

£264+ Cheap Flights from Portland to Lisbon

Cheap flight deals from Portland to Lisbon

Enter your travel dates to find the best prices.

Cheapest

Best

Last-minute

One-way

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 9 October 2026.

Sat 5/1207:10 -

1 stop16h 50m

Sat 12/1210:00 -

1 stop20h 18m

Deal found 5/10£541

Sat 5/1206:00 -

2 stops18h 00m

Sun 13/1210:00 -

1 stop20h 18m

Deal found 5/10£544

Sun 13/1213:40 -

1 stop17h 00m

Thu 24/1210:00 -

1 stop18h 12m

Deal found 5/10£552

Sun 8/1122:15 -

2 stops26h 45m

Tue 24/1111:30 -

1 stop32h 10m

Deal found 5/10£585

Tue 17/1107:10 -

1 stop16h 50m

Tue 24/1111:30 -

1 stop32h 10m

Deal found 8/10£590

Sun 8/1112:29 -

2 stops21h 01m

Wed 18/1105:00 -

1 stop14h 40m

Deal found 8/10£592

Tue 3/1108:30 -

1 stop17h 35m

Tue 17/1111:20 -

2 stops43h 49m

Deal found 6/10£593

Wed 18/1108:30 -

2 stops15h 40m

Wed 25/1111:20 -

2 stops36h 03m

Deal found 8/10£597

Tue 17/1123:30 -

2 stops23h 25m

Wed 25/1105:00 -

2 stops22h 12m

Deal found 8/10£598

Find flight deals from Portland to Lisbon

Round-trip from	£541
One-way from	£264
Popular in	June
Cheapest in	February
Average price	£617

KLM
5/12-12/12
2 total stops
37h 08m total
Portland to Lisbon

Search Deals

KLM
8/3-31/12
1 total stop
17h 00m total
Portland to Lisbon

Search Deals

Highest demand for flights based on searches. 24% potential increase in price (£163 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 5% potential price decrease (£25 potential savings vs. average return price).

Search Deals

Average for round-trip flights in October 2026

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

PortlandLisbon

PDX Portland - LIS Lisbon Humberto Delgado

PDXLIS

Portland

Mon 8/3

07:00-08:00

1 stop17h 00m

Lisbon Humberto Delgado

Wed 31/12

00:00-15:00

Nonstop0h 00m

£264

PortlandLisbon

PDX Portland - LIS Lisbon Humberto Delgado

PDXLIS

Portland

Tue 16/3

16:05-06:55

3 stops31h 50m

Lisbon Humberto Delgado

Wed 31/12

00:00-15:00

Nonstop0h 00m

£267

PortlandLisbon

PDX Portland - LIS Lisbon Humberto Delgado

PDXLIS

Portland

Tue 16/2

16:05-08:10

3 stops32h 05m

Lisbon Humberto Delgado

Wed 31/12

00:00-15:00

Nonstop0h 00m

£269

PortlandLisbon

PDX Portland - LIS Lisbon Humberto Delgado

PDXLIS

Portland

Fri 5/2

19:19-09:20

2 stops54h 01m

Lisbon Humberto Delgado

Wed 31/12

00:00-15:00

Nonstop0h 00m

£278

PortlandLisbon

PDX Portland - LIS Lisbon Humberto Delgado

PDXLIS

Portland

Wed 7/4

09:24-08:20

3 stops38h 56m

Lisbon Humberto Delgado

Wed 31/12

00:00-15:00

Nonstop0h 00m

£325

PortlandLisbon

PDX Portland - LIS Lisbon Humberto Delgado

PDXLIS

Portland

Sun 1/11

23:30-08:10

2 stops24h 40m

Lisbon Humberto Delgado

Wed 31/12

00:00-15:00

Nonstop0h 00m

£350

PortlandLisbon

PDX Portland - LIS Lisbon Humberto Delgado

PDXLIS

Portland

Wed 2/12

17:45-21:55

1 stop20h 10m

Lisbon Humberto Delgado

Wed 31/12

00:00-15:00

Nonstop0h 00m

£399

PortlandLisbon

PDX Portland - LIS Lisbon Humberto Delgado

PDXLIS

Portland

Mon 30/11

17:45-12:05

1 stop34h 20m

Lisbon Humberto Delgado

Wed 31/12

00:00-15:00

Nonstop0h 00m

£399

Fastest return journey

PortlandLisbon

PDX Portland - LIS Lisbon Humberto Delgado

PDXLIS

Portland

Tue 1/12

07:10-08:00

1 stop16h 50m

Lisbon Humberto Delgado

Wed 31/12

00:00-15:00

Nonstop0h 00m

£404

PortlandLisbon

PDX Portland - LIS Lisbon Humberto Delgado

PDXLIS

Portland

Sun 14/2

13:20-14:40

1 stop17h 20m

Lisbon Humberto Delgado

Fri 19/2

05:00-11:20

1 stop14h 20m

£571

Flights are sorted by cheapest return flights first.

Deals found on 4/10

Showing 1-10 of 21 resultsSorted by cheapest first

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.

PDX-LIS

Estimated return 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 best time to book flights from Portland to Lisbon is 12 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, February is the cheapest month in which you can book a flight from Portland to Lisbon (average of £453). Flying from Portland to Lisbon in June is currently the most expensive (average of £1,024). 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.

How much does it cost for a return flight from Portland to Lisbon?

Airfare is typical for this route at the moment.

Portland to Lisbon flights typically cost between £536 and £727 in December.
The cheapest return price found within the last 5 days was £541 on KLM (5 Dec–12 Dec).

Related info for your journey

How long is the flight from Portland to Lisbon?
Airlines like Delta and United Airlines fly from Portland to Lisbon in about 17h 20m. The time it takes to get you to your destination can typically vary by up to 17h 15m. The distance between Portland and Lisbon is about 5295 mi. This flight may include one or multiple stops.
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 holiday 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, February is the cheapest month in which you can book a flight from Portland to Lisbon (average of £453). Flying from Portland to Lisbon in June is currently the most expensive (average of £1,024). 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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Cheapflights helps you search for flights from Portland to Lisbon via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Why should you use Cheapflights to find cheap flight tickets from Portland to Lisbon?

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Can Cheapflights find flights from Portland to Lisbon with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Portland to Lisbon flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from Portland to Lisbon become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Lisbon from Portland today and book when prices fit your budget.

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Cheap flights from Portland to Lisbon from £264

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/3. Fares are subject to change and may not be available on all flights or dates of travel.

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 9 October 2026.

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 9 October 2026.

Best flights from Portland to LisbonDiscover carefully curated flight deals from Portland to Lisbon that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 9 October 2026.

Discover carefully curated flight deals from Portland to Lisbon that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 9 October 2026.

Last-minute flights from Portland to LisbonDiscover last-minute flight deals from Portland to Lisbon. Data last updated 9 October 2026 and is based on user searches.

Discover last-minute flight deals from Portland to Lisbon. Data last updated 9 October 2026 and is based on user searches.

One-way flights from Portland to LisbonSearch for one-way flight options from Portland to Lisbon. Find affordable one-way fares based on user searches. Data last updated 9 October 2026.

Search for one-way flight options from Portland to Lisbon. Find affordable one-way fares based on user searches. Data last updated 9 October 2026.

Find flight deals from Portland to Lisbon

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

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

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

The best time to book flights from Portland to Lisbon is 12 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

How much does it cost for a return flight from Portland to Lisbon?

Airfare is typical for this route at the moment.

Portland to Lisbon flights typically cost between £536 and £727 in December.The cheapest return price found within the last 5 days was £541 on KLM (5 Dec–12 Dec).

Related info for your journey

How long is the flight from Portland to Lisbon?

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

How can I find direct flights from Portland to Lisbon?

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

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

Travelling to a place near Lisbon?

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Search flights from Portland to Lisbon by cabin class

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Other flights to Lisbon

Explore flights to Lisbon departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 9 October 2026.

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How does Cheapflights help users find flights from Portland to Lisbon?

Why should you use Cheapflights to find cheap flight tickets from Portland to Lisbon?

Can Cheapflights find flights from Portland to Lisbon with no change fees?

Can Cheapflights notify me if prices for flights from Portland to Lisbon become cheaper?

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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 9 October 2026.

Best flights from Portland to Lisbon
Discover carefully curated flight deals from Portland to Lisbon that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 9 October 2026.

Last-minute flights from Portland to Lisbon
Discover last-minute flight deals from Portland to Lisbon. Data last updated 9 October 2026 and is based on user searches.

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 9 October 2026.

Portland to Lisbon flights typically cost between £536 and £727 in December.
The cheapest return price found within the last 5 days was £541 on KLM (5 Dec–12 Dec).