What is the cheapest airline that flies from Portland to Lisbon Humberto Delgado?

Air Canada, Icelandair, and United Airlines are the most popular carriers operating from Portland to Lisbon Humberto Delgado

Which layover airport offers the lowest fares from Portland to Lisbon?

Flights via Reykjavik (KEF) offer the lowest average round-trip price of $453.

What airlines fly to Lisbon?

British Airways, Delta and United Airlines are the top three most popular airlines that fly to Lisbon from Portland according to our data. British Airways is the first choice among our users, with 48% of people opting to fly with this airline when traveling to Lisbon. Keep in mind that there are 8 different airlines that fly to Lisbon on a routine basis, so you have a few additional options to choose from.

Which layover airport has the shortest connection time from Portland to Lisbon?

Amsterdam (AMS) has the shortest average layover time for this route: 1h 24m.

Which airport is the most popular layover for flights between Portland and Lisbon?

London (LHR) was the most common stop: 65% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport has the shortest travel time from Portland to Lisbon?

Flights connecting via Amsterdam (AMS) have the shortest average one-way travel time: 13h 43m.

When did momondo last update prices for flights from Portland Airport to Lisbon Humberto Delgado Airport?

Prices for flights from Portland Airport to Lisbon Humberto Delgado Airport are refreshed on a daily basis.

How many operators does momondo search for flights from Portland Airport to Lisbon Humberto Delgado Airport?

The number of operators available for flights from Portland Airport to Lisbon Humberto Delgado Airport is 8 as of February 2026.

How old do you have to be to fly from Portland Airport to Lisbon Humberto Delgado Airport?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Portland Airport to Lisbon Humberto Delgado Airport.

What documentation or ID do you need to fly to Lisbon Humberto Delgado Airport?

The travel and health documents you'll need for your trip to Lisbon Humberto Delgado Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Lisbon Humberto Delgado Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$281 Cheap Flights from Portland to Lisbon in 2026

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One-way

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Cheap round-trip flights

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3:15 pm - 9:20 am

PDX

LIS

34h 05m

2 stops

1:00 pm - 3:13 pm

LIS

PDX

34h 13m

2 stops

$492Air Canada

Mon, Apr 20 - Mon, May 4

10:55 pm - 8:00 am

PDX

LIS

25h 05m

2 stops

11:55 am - 11:10 am

LIS

PDX

31h 15m

1 stop

$493Delta

Sat, Apr 18 - Thu, May 7

6:00 am - 9:00 am

PDX

LIS

19h 00m

2 stops

11:25 am - 12:25 pm

LIS

PDX

32h 00m

1 stop

$494Multiple Airlines

Tue, Mar 3 - Tue, Mar 10

3:30 pm - 10:45 pm

PDX

LIS

23h 15m

2 stops

5:05 am - 7:05 pm

LIS

PDX

22h 00m

2 stops

$495Lufthansa

Fri, Apr 24 - Thu, May 7

3:15 pm - 9:20 am

PDX

LIS

34h 05m

2 stops

5:05 am - 10:29 pm

LIS

PDX

25h 24m

2 stops

$496Lufthansa

Wed, Apr 8 - Fri, Apr 24

8:30 am - 8:10 am

PDX

LIS

15h 40m

2 stops

5:00 am - 5:51 pm

LIS

PDX

19h 51m

2 stops

$497United Airlines

Tue, Mar 3 - Tue, Mar 10

7:00 am - 8:00 am

PDX

LIS

17h 00m

1 stop

9:20 am - 8:05 pm

LIS

PDX

18h 45m

2 stops

$498KLM

Sun, Apr 19 - Tue, Apr 28

7:15 am - 10:45 pm

PDX

LIS

31h 30m

2 stops

5:05 am - 7:05 pm

LIS

PDX

22h 00m

2 stops

$500Lufthansa

Thu, Apr 23 - Thu, May 7

7:00 am - 8:10 am

PDX

LIS

17h 10m

2 stops

5:00 am - 10:45 pm

LIS

PDX

24h 45m

2 stops

$501United Airlines

Tue, Mar 3 - Tue, Mar 10

10:19 pm - 10:15 am

PDX

LIS

27h 56m

1 stop

5:00 am - 9:52 pm

LIS

PDX

23h 52m

2 stops

$502United Airlines

Sat, Mar 7 - Thu, Mar 19

United Airlines flights from Portland to Lisbon

Our best United Airlines deals on Portland to Lisbon flight tickets

United Airlines

Mar 3

PDX8:30 amPortland

15h 40m

2 stops

LIS8:10 amLisbon Humberto Delgado

Mar 10

LIS5:00 amLisbon Humberto Delgado

19h 51m

2 stops

PDX5:51 pmPortland

$497

United Airlines

Mar 3

PDX7:00 amPortland

17h 10m

2 stops

LIS8:10 amLisbon Humberto Delgado

Mar 10

LIS5:00 amLisbon Humberto Delgado

24h 45m

2 stops

PDX10:45 pmPortland

$501

United Airlines

Mar 7

PDX10:19 pmPortland

27h 56m

1 stop

LIS10:15 amLisbon Humberto Delgado

Mar 19

LIS11:55 amLisbon Humberto Delgado

17h 03m

1 stop

PDX9:58 pmPortland

$514

Lufthansa flights from Portland to Lisbon

Our best Lufthansa deals on Portland to Lisbon flight tickets

Lufthansa

Apr 18

PDX3:30 pmPortland

23h 15m

2 stops

LIS10:45 pmLisbon Humberto Delgado

May 6

LIS5:05 amLisbon Humberto Delgado

22h 00m

2 stops

PDX7:05 pmPortland

$495

Lufthansa

Apr 8

PDX3:15 pmPortland

34h 05m

2 stops

LIS9:20 amLisbon Humberto Delgado

Apr 24

LIS5:05 amLisbon Humberto Delgado

25h 24m

2 stops

PDX10:29 pmPortland

$496

Lufthansa

Apr 23

PDX7:15 amPortland

31h 30m

2 stops

LIS10:45 pmLisbon Humberto Delgado

May 7

LIS5:05 amLisbon Humberto Delgado

22h 00m

2 stops

PDX7:05 pmPortland

$500

Fly from

Fly to

Route

Depart

Return

Price

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Mon 4/20

3:15 pm-9:20 am

2 stops34h 05m

Lisbon Humberto Delgado

Mon 5/4

1:00 pm-3:13 pm

2 stops34h 13m

$492

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Sat 4/18

10:55 pm-8:00 am

2 stops25h 05m

Lisbon Humberto Delgado

Thu 5/7

11:55 am-11:10 am

1 stop31h 15m

$493

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Tue 3/3

6:00 am-9:00 am

2 stops19h 00m

Lisbon Humberto Delgado

Tue 3/10

11:25 am-12:25 pm

1 stop32h 00m

$494

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Fri 4/24

3:30 pm-10:45 pm

2 stops23h 15m

Lisbon Humberto Delgado

Thu 5/7

5:05 am-7:05 pm

2 stops22h 00m

$495

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Wed 4/8

3:15 pm-9:20 am

2 stops34h 05m

Lisbon Humberto Delgado

Fri 4/24

5:05 am-10:29 pm

2 stops25h 24m

$496

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Tue 3/3

8:30 am-8:10 am

2 stops15h 40m

Lisbon Humberto Delgado

Tue 3/10

5:00 am-5:51 pm

2 stops19h 51m

$497

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Sun 4/19

7:00 am-8:00 am

1 stop17h 00m

Lisbon Humberto Delgado

Tue 4/28

9:20 am-8:05 pm

2 stops18h 45m

$498

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Thu 4/23

7:15 am-10:45 pm

2 stops31h 30m

Lisbon Humberto Delgado

Thu 5/7

5:05 am-7:05 pm

2 stops22h 00m

$500

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Tue 3/3

7:00 am-8:10 am

2 stops17h 10m

Lisbon Humberto Delgado

Tue 3/10

5:00 am-10:45 pm

2 stops24h 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

$502

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How to get the cheapest flight ticket from Portland to Lisbon

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Layovers

What is the cheapest month to fly to Lisbon?

In general, November is the cheapest month to fly from Portland to Lisbon. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $558. If you are unable to visit Lisbon during the month of November, then departing from Portland during the month February is also very affordable. Most momondo users find prices during this month for around $670.

How far in advance should I book a flight to Lisbon?

You are more likely to see cheaper flights to Lisbon from Portland when booking weeks ahead of your departure date. In general, you can expect to find flights to Lisbon for around $852 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Lisbon from Portland for as low as $771 on momondo.

How have Portland to Lisbon flight prices changed over time?

As of February 2026, prices for Portland to Lisbon flights are approximately 15% cheaper when compared to flights at the same time last year.

When to book flights from Portland to Lisbon

Are you open to changing your travel dates? Check out the ideal times to fly from Portland to Lisbon according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Portland to Lisbon (PDX to LIS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Portland to Lisbon

Fastest flight time	15h 40m
Direct flights	None

The fastest flight from Portland to Lisbon takes 15h 40m

There are no direct flights from Portland to Lisbon. There are no popular flight routes from Portland to Lisbon.

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How far is Portland to Lisbon Humberto Delgado by plane?
The distance between Portland and Lisbon Humberto Delgado is about 5304.2 mi. Flights usually cover this in 15h 40m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from Portland Airport to Lisbon Humberto Delgado Airport?
Prices for flights from Portland Airport to Lisbon Humberto Delgado Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Portland Airport to Lisbon Humberto Delgado Airport?
The number of operators available for flights from Portland Airport to Lisbon Humberto Delgado Airport is 8 as of February 2026.
How old do you have to be to fly from Portland Airport to Lisbon Humberto Delgado Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Portland Airport to Lisbon Humberto Delgado Airport.
What documentation or ID do you need to fly to Lisbon Humberto Delgado Airport?
The travel and health documents you'll need for your trip to Lisbon Humberto Delgado Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Lisbon Humberto Delgado Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Portland to Lisbon?
momondo data reveals that the most frequently booked airline on the route from Portland to Lisbon is British Airways, representing 41% of all bookings. The subsequent popular airlines are Delta at 17%, United Airlines at 14%, and KLM at 13%.

Best airlines flying from Portland to Lisbon

Compare and see reviews for airlines that fly from Portland to Lisbon with momondo

Airline	Rating	Free Cancellation	Price
Icelandair	PriceFrom $360	Free Cancellation	Rating 7.1 606 reviews	Search Icelandair flights
KLM	PriceFrom $492	Free Cancellation	Rating 7.7 1,448 reviews	Search KLM flights
Lufthansa	PriceFrom $501	Free Cancellation	Rating 6.8 7,758 reviews	Search Lufthansa flights
British Airways	PriceFrom $515	Free Cancellation	Rating 6.7 7,711 reviews	Search British Airways flights
Delta	PriceFrom $523	Free Cancellation	Rating 7.9 8,138 reviews	Search Delta flights
American Airlines	PriceFrom $524	Free Cancellation	Rating 7.2 11,215 reviews	Search American Airlines flights
United Airlines	PriceFrom $545	Free Cancellation	Rating 7.4 9,234 reviews	Search United Airlines flights
Air Canada	PriceFrom $584	Free Cancellation	Rating 7.1 10,680 reviews	Search Air Canada flights

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Why use momondo?

Why should I use momondo to find a flight deal from Portland to Lisbon?

Finding the right flight to Lisbon from Portland is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Lisbon quick and easy, saving you time and money.

Can I find flights from Portland to Lisbon with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Lisbon from Portland with this policy.

How can momondo help me find flights from Portland to Lisbon?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Portland to Lisbon.

I’m not ready to book a flight from Portland to Lisbon right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Portland to Lisbon flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

An easier way to manage your Lisbon trip

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Cheap flights from Portland to Lisbon from $281

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Portland to Lisbon departing on 4/14. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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How to get the cheapest flight ticket from Portland to Lisbon

What is the cheapest month to fly to Lisbon?

How far in advance should I book a flight to Lisbon?

How have Portland to Lisbon flight prices changed over time?

As of February 2026, prices for Portland to Lisbon flights are approximately 15% cheaper when compared to flights at the same time last year.

What is the cheapest airline that flies from Portland to Lisbon Humberto Delgado?

Air Canada, Icelandair, and United Airlines are the most popular carriers operating from Portland to Lisbon Humberto Delgado

What airlines fly to Lisbon?

Which airport is the most popular layover for flights between Portland and Lisbon?

London (LHR) was the most common stop: 65% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport offers the lowest fares from Portland to Lisbon?

Flights via Reykjavik (KEF) offer the lowest average round-trip price of $453.

Which layover airport has the shortest travel time from Portland to Lisbon?

Flights connecting via Amsterdam (AMS) have the shortest average one-way travel time: 13h 43m.

Which layover airport has the shortest connection time from Portland to Lisbon?

Amsterdam (AMS) has the shortest average layover time for this route: 1h 24m.

When to book flights from Portland to Lisbon

Cheap Portland to Lisbon (PDX to LIS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Portland to Lisbon

Fastest flight time

Direct flights

How far is Portland to Lisbon Humberto Delgado by plane?

When did momondo last update prices for flights from Portland Airport to Lisbon Humberto Delgado Airport?

How many operators does momondo search for flights from Portland Airport to Lisbon Humberto Delgado Airport?

How old do you have to be to fly from Portland Airport to Lisbon Humberto Delgado Airport?

What documentation or ID do you need to fly to Lisbon Humberto Delgado Airport?

What is the most popular airline from Portland to Lisbon?

Best airlines flying from Portland to Lisbon

Compare and see reviews for airlines that fly from Portland to Lisbon with momondo

Traveling to a place near Lisbon?

Why use momondo?

Why should I use momondo to find a flight deal from Portland to Lisbon?

Can I find flights from Portland to Lisbon with flexible booking policies on momondo?

How can momondo help me find flights from Portland to Lisbon?

I’m not ready to book a flight from Portland to Lisbon right now. Can momondo alert me if prices change?

An easier way to manage your Lisbon trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Portugal

Airports servicing Portugal