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

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

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

London (LHR) has the shortest average layover time for this route: 2h 19m.

What airlines fly to Lisbon?

British Airways, Delta and KLM 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 airport is the most popular layover for flights between Portland and Lisbon?

London (LHR) was the most common stop: 57% 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 $420.

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: 14h 19m.

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 March 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.

$331 Cheap Flights from Portland to Lisbon in 2026

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Find the cheapest flights from Portland to Lisbon

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

3:15 pm - 9:20 am

PDX

LIS

34h 05m

2 stops

6:25 pm - 10:34 pm

LIS

PDX

36h 09m

2 stops

$603Multiple Airlines

Sat, Apr 18 - Tue, Apr 28

11:59 pm - 10:30 am

PDX

LIS

26h 31m

2 stops

11:25 am - 10:35 pm

LIS

PDX

43h 10m

2 stops

$612United Airlines

Sat, Apr 25 - Tue, May 5

3:15 pm - 9:20 am

PDX

LIS

34h 05m

2 stops

7:25 am - 11:59 pm

LIS

PDX

24h 34m

2 stops

$613Lufthansa

Sun, Apr 19 - Mon, Apr 27

4:15 pm - 8:20 am

PDX

LIS

32h 05m

2 stops

10:25 am - 11:55 pm

LIS

PDX

21h 30m

2 stops

$617United Airlines

Sat, Apr 25 - Fri, May 8

1:39 pm - 11:25 pm

PDX

LIS

25h 46m

2 stops

5:05 am - 6:46 pm

LIS

PDX

21h 41m

2 stops

$624Multiple Airlines

Wed, Apr 22 - Thu, Apr 30

1:39 pm - 11:15 am

PDX

LIS

37h 36m

2 stops

6:25 pm - 10:34 pm

LIS

PDX

36h 09m

2 stops

$627SWISS

Mon, Apr 20 - Tue, Apr 28

2:30 pm - 10:15 pm

PDX

LIS

23h 45m

2 stops

5:05 am - 6:34 pm

LIS

PDX

21h 29m

2 stops

$634Lufthansa

Mon, Apr 13 - Mon, Apr 27

10:00 am - 9:00 am

PDX

LIS

39h 00m

2 stops

12:10 pm - 10:22 pm

LIS

PDX

42h 12m

2 stops

$637Scandinavian Airlines

Sat, Aug 22 - Sat, Sep 5

3:59 pm - 10:45 pm

PDX

LIS

22h 46m

2 stops

11:25 am - 12:59 am

LIS

PDX

21h 34m

2 stops

$639Multiple Airlines

Thu, Apr 30 - Fri, May 8

1:39 pm - 11:25 pm

PDX

LIS

25h 46m

2 stops

11:25 am - 12:59 am

LIS

PDX

21h 34m

2 stops

$641Multiple Airlines

Wed, Apr 29 - Fri, May 8

Delta flights from Portland to Lisbon

Our best Delta deals on Portland to Lisbon flight tickets

Delta

Apr 14

PDX7:05 amPortland

20h 10m

2 stops

LIS11:15 amLisbon Humberto Delgado

Apr 28

LIS5:00 amLisbon Humberto Delgado

14h 10m

1 stop

PDX11:10 amPortland

$671

Delta

Apr 13

PDX1:05 pmPortland

17h 30m

1 stop

LIS2:35 pmLisbon Humberto Delgado

Apr 27

LIS11:55 amLisbon Humberto Delgado

31h 15m

1 stop

PDX11:10 amPortland

$675

Delta

Apr 14

PDX7:05 amPortland

20h 10m

2 stops

LIS11:15 amLisbon Humberto Delgado

Apr 28

LIS5:00 amLisbon Humberto Delgado

17h 53m

2 stops

PDX2:53 pmPortland

$680

Lufthansa flights from Portland to Lisbon

Our best Lufthansa deals on Portland to Lisbon flight tickets

Lufthansa

Apr 19

PDX3:15 pmPortland

34h 05m

2 stops

LIS9:20 amLisbon Humberto Delgado

Apr 27

LIS7:25 amLisbon Humberto Delgado

24h 34m

2 stops

PDX11:59 pmPortland

$613

Lufthansa

Apr 13

PDX2:30 pmPortland

23h 45m

2 stops

LIS10:15 pmLisbon Humberto Delgado

Apr 27

LIS5:05 amLisbon Humberto Delgado

21h 29m

2 stops

PDX6:34 pmPortland

$634

Lufthansa

Apr 13

PDX3:15 pmPortland

23h 30m

2 stops

LIS10:45 pmLisbon Humberto Delgado

Apr 27

LIS5:05 amLisbon Humberto Delgado

26h 54m

2 stops

PDX11:59 pmPortland

$645

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Sat 4/18

3:15 pm-9:20 am

2 stops34h 05m

Lisbon Humberto Delgado

Tue 4/28

6:25 pm-10:34 pm

2 stops36h 09m

$603

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Sat 4/25

11:59 pm-10:30 am

2 stops26h 31m

Lisbon Humberto Delgado

Tue 5/5

11:25 am-10:35 pm

2 stops43h 10m

$612

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Sun 4/19

3:15 pm-9:20 am

2 stops34h 05m

Lisbon Humberto Delgado

Mon 4/27

7:25 am-11:59 pm

2 stops24h 34m

$613

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Sat 4/25

4:15 pm-8:20 am

2 stops32h 05m

Lisbon Humberto Delgado

Fri 5/8

10:25 am-11:55 pm

2 stops21h 30m

$617

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Wed 4/22

1:39 pm-11:25 pm

2 stops25h 46m

Lisbon Humberto Delgado

Thu 4/30

5:05 am-6:46 pm

2 stops21h 41m

$624

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Mon 4/20

1:39 pm-11:15 am

2 stops37h 36m

Lisbon Humberto Delgado

Tue 4/28

6:25 pm-10:34 pm

2 stops36h 09m

$627

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Mon 4/13

2:30 pm-10:15 pm

2 stops23h 45m

Lisbon Humberto Delgado

Mon 4/27

5:05 am-6:34 pm

2 stops21h 29m

$634

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Sat 8/22

10:00 am-9:00 am

2 stops39h 00m

Lisbon Humberto Delgado

Sat 9/5

12:10 pm-10:22 pm

2 stops42h 12m

$637

Quickest round-trip

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Thu 4/30

3:59 pm-10:45 pm

2 stops22h 46m

Lisbon Humberto Delgado

Fri 5/8

11:25 am-12:59 am

2 stops21h 34m

$639

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Wed 4/29

1:39 pm-11:25 pm

2 stops25h 46m

Lisbon Humberto Delgado

Fri 5/8

11:25 am-12:59 am

2 stops21h 34m

$641

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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 $557. 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 $601.

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 $829 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 $763 on momondo.

Can stopping save me money on Portland to Lisbon flights?

You could potentially save up to 2% on your flight if you consider stops on a Portland to Lisbon flight.

How have Portland to Lisbon flight prices changed over time?

As of March 2026, prices for Portland to Lisbon flights are approximately 19% 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	14h 25m
Direct flights	None

The fastest flight from Portland to Lisbon takes 14h 25m

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

Search flight deals

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 14h 25m, 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 March 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 16%, KLM at 14%, and United Airlines at 14%.

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 7.1 622 reviews	Search Icelandair flights
KLM	PriceFrom $492	Free Cancellation	Rating 7.8 1,471 reviews	Search KLM flights
Lufthansa	PriceFrom $501	Free Cancellation	Rating 6.8 7,850 reviews	Search Lufthansa flights
British Airways	PriceFrom $512	Free Cancellation	Rating 6.7 7,794 reviews	Search British Airways flights
American Airlines	PriceFrom $516	Free Cancellation	Rating 7.1 11,472 reviews	Search American Airlines flights
Delta	PriceFrom $523	Free Cancellation	Rating 7.9 8,294 reviews	Search Delta flights
United Airlines	PriceFrom $549	Free Cancellation	Rating 7.4 9,426 reviews	Search United Airlines flights
Air Canada	PriceFrom $583	Free Cancellation	Rating 7.1 10,805 reviews	Search Air Canada flights

Sintra

Fátima

Ericeira

Nazaré

Setúbal

Peniche

Estoril

Evora

Oeiras

Sesimbra

Leiria

Figueira da Foz

Tomar

Zambujeira do Mar

Óbidos

Batalha

Sines

Torres Vedras

Comporta

Almada

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

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.

Start using Trips

Find my bookings

Get notified when prices go down

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

1 adult

Tue 4/14

Tue 4/21

Email me momondo's favorite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Portugal

Nearby airports

Airlines

Cabin classes

Other Portugal destinations

Other flights from Portland

Complete your trip

Feeling lucky

Airports servicing Portugal

Cheap flights from Portland to Lisbon from $331

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 5/23. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from Portland to Lisbon

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Delta flights from Portland to Lisbon

Our best Delta deals on Portland to Lisbon flight tickets

Lufthansa flights from Portland to Lisbon

Our best Lufthansa deals on Portland to Lisbon flight tickets

momondo Fare Finder

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

See travel insights to Lisbon from

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?

Can stopping save me money on Portland to Lisbon flights?

How have Portland to Lisbon flight prices changed over time?

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

What airlines fly to Lisbon?

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

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

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

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

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

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?

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

Fly your favorite airline to Lisbon

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Lisbon

List of cabin classes available on flights landing in Lisbon. Availability may vary depending on flight origin and airline.

Popular cities in Portugal

Popular flights according to clicks in the last 7 days on momondo

Fly to other destinations from Portland

According to popular flight searches on momondo this year

Complete your trip to Lisbon

Explore popular destinations other users love

According to popular flight searches on momondo this year