What is the cheapest airline that flies from Portland to Portugal?

United Airlines and Iberia are the most popular carriers operating from Portland to Portugal

What airlines fly to Portugal?

British Airways, Delta and KLM are the top three most popular airlines that fly to Portugal from Portland according to our data. British Airways is the first choice among our users, with 40% of people opting to fly with this airline when traveling to Portugal. Keep in mind that there are 8 different airlines that fly to Portugal on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Portland Airport to Portugal?

Prices for flights from Portland Airport to Portugal are refreshed on a daily basis.

How many operators does momondo search for flights from Portland Airport to Portugal?

As of April 2026, there are 8 operators available to choose from for flights from Portland Airport to Portugal.

How old do you have to be to fly from Portland Airport to Portugal?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Portland Airport to Portugal.

What documentation or ID do you need to fly to Portugal?

The travel and health documents required for your trip to Portugal can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Portugal. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$289 Cheap Flights from Portland to Portugal in 2026

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Find the cheapest flights from Portland to Portugal

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:30 pm - 10:05 am

PDX

LIS

30h 35m

1 stop

6:35 am - 8:54 pm

LIS

PDX

22h 19m

2 stops

$747Multiple Airlines

Sat, May 2 - Sat, May 9

7:30 pm - 11:10 pm

PDX

LIS

19h 40m

1 stop

6:35 am - 10:50 pm

LIS

PDX

24h 15m

2 stops

$755Multiple Airlines

Mon, May 4 - Wed, May 13

7:30 pm - 11:10 pm

PDX

LIS

19h 40m

1 stop

6:35 am - 10:50 pm

LIS

PDX

24h 15m

2 stops

$756Multiple Airlines

Mon, May 4 - Wed, May 13

7:30 pm - 10:05 am

PDX

LIS

30h 35m

1 stop

6:55 pm - 10:47 pm

LIS

PDX

35h 52m

2 stops

$767British Airways

Sat, May 2 - Fri, May 8

1:39 pm - 11:25 pm

PDX

OPO

25h 46m

2 stops

12:35 pm - 12:59 am

OPO

PDX

20h 24m

2 stops

$848Lufthansa

Wed, Apr 29 - Wed, May 6

7:00 am - 10:40 am

PDX

OPO

19h 40m

2 stops

5:00 am - 11:10 am

OPO

PDX

14h 10m

1 stop

$851Delta

Wed, Apr 29 - Wed, May 6

3:35 pm - 10:05 pm

PDX

OPO

22h 30m

2 stops

5:00 am - 11:10 am

OPO

PDX

14h 10m

1 stop

$877Delta

Tue, May 5 - Tue, May 19

11:56 am - 8:35 pm

PDX

OPO

24h 39m

2 stops

9:25 pm - 4:59 pm

OPO

PDX

27h 34m

2 stops

$894British Airways

Sun, May 3 - Mon, May 18

7:00 am - 10:30 am

PDX

OPO

19h 30m

1 stop

5:00 am - 11:10 am

OPO

PDX

14h 10m

1 stop

$903KLM

Mon, Sep 28 - Fri, Oct 9

10:05 pm - 10:25 am

PDX

OPO

28h 20m

1 stop

5:00 am - 11:10 am

OPO

PDX

14h 10m

1 stop

$918KLM

Sat, Sep 26 - Fri, Oct 16

KLM flights from Portland to Portugal

Our best KLM deals on Portland to Portugal flight tickets

KLM

Apr 30

PDX1:05 pmPortland

13h 50m

1 stop

LIS10:55 amLisbon Humberto Delgado

May 8

LIS3:35 pmLisbon Humberto Delgado

27h 35m

1 stop

PDX11:10 amPortland

$784

KLM

May 9

PDX1:05 pmPortland

17h 30m

1 stop

LIS2:35 pmLisbon Humberto Delgado

May 22

LIS5:00 amLisbon Humberto Delgado

14h 10m

1 stop

PDX11:10 amPortland

$837

KLM

Apr 13

PDX1:05 pmPortland

13h 50m

1 stop

LIS10:55 amLisbon Humberto Delgado

Apr 27

LIS11:55 amLisbon Humberto Delgado

31h 15m

1 stop

PDX11:10 amPortland

$859

Air Canada flights from Portland to Portugal

Our best Air Canada deals on Portland to Portugal flight tickets

Air Canada

Aug 16

PDX7:45 pmPortland

29h 35m

2 stops

LIS9:20 amLisbon Humberto Delgado

Aug 28

LIS11:25 amLisbon Humberto Delgado

36h 05m

2 stops

PDX3:30 pmPortland

$790

Air Canada

Sep 21

PDX7:45 pmPortland

31h 15m

2 stops

LIS11:00 amLisbon Humberto Delgado

Sep 30

LIS11:25 amLisbon Humberto Delgado

34h 52m

2 stops

PDX2:17 pmPortland

$795

Air Canada

Aug 2

PDX7:45 pmPortland

29h 35m

2 stops

LIS9:20 amLisbon Humberto Delgado

Aug 21

LIS1:00 pmLisbon Humberto Delgado

34h 30m

2 stops

PDX3:30 pmPortland

$796

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Sat 5/2

7:30 pm-10:05 am

1 stop30h 35m

Lisbon Humberto Delgado

Sat 5/9

6:35 am-8:54 pm

2 stops22h 19m

$747

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Mon 5/4

7:30 pm-11:10 pm

1 stop19h 40m

Lisbon Humberto Delgado

Wed 5/13

6:35 am-10:50 pm

2 stops24h 15m

$755

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Mon 5/4

7:30 pm-11:10 pm

1 stop19h 40m

Lisbon Humberto Delgado

Wed 5/13

6:35 am-10:50 pm

2 stops24h 15m

$756

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Sat 5/2

7:30 pm-10:05 am

1 stop30h 35m

Lisbon Humberto Delgado

Fri 5/8

6:55 pm-10:47 pm

2 stops35h 52m

$767

PortlandPorto

PDX - OPO

PDXOPO

Portland

Wed 4/29

1:39 pm-11:25 pm

2 stops25h 46m

Porto

Wed 5/6

12:35 pm-12:59 am

2 stops20h 24m

$848

PortlandPorto

PDX - OPO

PDXOPO

Portland

Wed 4/29

7:00 am-10:40 am

2 stops19h 40m

Porto

Wed 5/6

5:00 am-11:10 am

1 stop14h 10m

$851

PortlandPorto

PDX - OPO

PDXOPO

Portland

Tue 5/5

3:35 pm-10:05 pm

2 stops22h 30m

Porto

Tue 5/19

5:00 am-11:10 am

1 stop14h 10m

$877

PortlandPorto

PDX - OPO

PDXOPO

Portland

Sun 5/3

11:56 am-8:35 pm

2 stops24h 39m

Porto

Mon 5/18

9:25 pm-4:59 pm

2 stops27h 34m

$894

Quickest round-trip

PortlandPorto

PDX - OPO

PDXOPO

Portland

Mon 9/28

7:00 am-10:30 am

1 stop19h 30m

Porto

Fri 10/9

5:00 am-11:10 am

1 stop14h 10m

$903

PortlandPorto

PDX - OPO

PDXOPO

Portland

Sat 9/26

10:05 pm-10:25 am

1 stop28h 20m

Porto

Fri 10/16

5:00 am-11:10 am

1 stop14h 10m

$918

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 Portugal

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

What is the cheapest month to fly to Portugal?

The cheapest month to fly to Portugal from Portland is in November. Flight prices, which tend to average around $558, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of November, then book flights to Portugal from Portland during February instead. Flights to Portugal in February, while not as cheap as those in November, still average around $599.

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

You are more likely to see cheaper flights to Portugal from Portland when booking weeks ahead of your departure date. In general, you can expect to find flights to Portugal for around $814 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Portugal from Portland for as low as $682 on momondo.

Can stopping save me money on Portland to Portugal flights?

You could potentially save up to 29% on your flight if you consider stops on a Portland to Portugal flight.

Cheap Portland to Portugal flight deals and tips

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

Fastest flight time	14h 20m
Direct flights	None

The fastest flight from Portland to Portugal takes 14h 20m

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

Search flight deals

Frequently asked questions about flying from Portland to Portugal

When did momondo last update prices for flights from Portland Airport to Portugal?
Prices for flights from Portland Airport to Portugal are refreshed on a daily basis.
How many operators does momondo search for flights from Portland Airport to Portugal?
As of April 2026, there are 8 operators available to choose from for flights from Portland Airport to Portugal.
How old do you have to be to fly from Portland Airport to Portugal?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Portland Airport to Portugal.
What documentation or ID do you need to fly to Portugal?
The travel and health documents required for your trip to Portugal can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Portugal. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Portland to Portugal

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

Airline	Rating	Free Cancellation	Price
Icelandair	PriceFrom $360	Free Cancellation	Rating 7.0 631 reviews	Search Icelandair flights
KLM	PriceFrom $492	Free Cancellation	Rating 7.7 1,490 reviews	Search KLM flights
Delta	PriceFrom $494	Free Cancellation	Rating 7.9 8,386 reviews	Search Delta flights
Lufthansa	PriceFrom $501	Free Cancellation	Rating 6.8 7,893 reviews	Search Lufthansa flights
United Airlines	PriceFrom $502	Free Cancellation	Rating 7.4 9,547 reviews	Search United Airlines flights
British Airways	PriceFrom $511	Free Cancellation	Rating 6.7 7,857 reviews	Search British Airways flights
American Airlines	PriceFrom $524	Free Cancellation	Rating 7.1 11,553 reviews	Search American Airlines flights
Air Canada	PriceFrom $577	Free Cancellation	Rating 7.1 10,895 reviews	Search Air Canada flights

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Portland to Portugal. momondo saves you time and could save you money on your trip.

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

All flight searches from Portland to Portugal on momondo can be filtered to show those which offer flexible booking policies.

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

Once all potential Portland to Portugal flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

If you are not ready to book a flight from Portland to Portugal now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Portugal and let you know when they change.

An easier way to manage your Portugal 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.

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Popular cities

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Other flights to Portugal

Airlines

Cabin classes

Complete your trip

Feeling lucky

Popular cities in Portugal

Flights to Lisbonfrom $434

Flights to Portofrom $419

Flights to Funchalfrom $548

Flights to Farofrom $566

Flights to Ponta Delgadafrom $595

Flights to Lajesfrom $626

Flights to Pico Islandfrom $828

Flights to Hortafrom $687

Flights to Porto Santofrom $897

Flights to Velasfrom $759

Cheap flights from Portland to Portugal from $289

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 Portugal departing on 4/20. 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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Find the cheapest flights from Portland to Portugal

Cheap round-trip flights

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KLM flights from Portland to Portugal

Our best KLM deals on Portland to Portugal flight tickets

Air Canada flights from Portland to Portugal

Our best Air Canada deals on Portland to Portugal flight tickets

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See travel insights to Portugal from

How to get the cheapest flight ticket from Portland to Portugal

What is the cheapest month to fly to Portugal?

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

Can stopping save me money on Portland to Portugal flights?

What is the cheapest airline that flies from Portland to Portugal?

What airlines fly to Portugal?

Cheap Portland to Portugal flight deals and tips

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

Fastest flight time

Direct flights

Frequently asked questions about flying from Portland to Portugal

Best airlines flying from Portland to Portugal

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

Why use momondo?

An easier way to manage your Portugal 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

Popular cities in Portugal

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

Portland flight routes

According to popular flight searches on momondo this year

Portugal flight routes

According to popular flight searches on momondo this year

Fly your favorite airline to Portugal

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

Cabin classes currently available on flights to Portugal

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

Complete your trip to Portugal

Explore popular destinations other users love

According to popular flight searches on momondo this year