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

Icelandair, Iberia, and British Airways 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 42% of people opting to fly with this airline when traveling to Portugal. Keep in mind that there are 7 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 June 2026, there are 7 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

Discover deals from 900+ travel sites with momondo.

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.

5:30 am - 7:40 am

PDX

OPO

18h 10m

2 stops

8:20 am - 11:51 pm

OPO

PDX

23h 31m

2 stops

$755American Airlines

Sun, Nov 1 - Tue, Nov 10

2:45 pm - 12:50 pm

PDX

LIS

14h 05m

1 stop

2:00 pm - 5:00 pm

LIS

PDX

35h 00m

1 stop

$758Icelandair

Mon, Nov 2 - Tue, Nov 10

3:45 pm - 12:50 pm

PDX

LIS

14h 05m

1 stop

2:00 pm - 5:00 pm

LIS

PDX

35h 00m

1 stop

$780Icelandair

Sat, Oct 31 - Tue, Nov 10

3:45 pm - 12:50 pm

PDX

LIS

14h 05m

1 stop

2:00 pm - 5:00 pm

LIS

PDX

35h 00m

1 stop

$781Icelandair

Sat, Oct 31 - Thu, Nov 12

7:00 am - 8:00 am

PDX

LIS

17h 00m

1 stop

11:30 am - 11:20 am

LIS

PDX

31h 50m

1 stop

$789Delta

Sun, Nov 1 - Tue, Nov 10

5:45 pm - 5:50 pm

PDX

OPO

16h 05m

1 stop

6:40 pm - 3:55 pm

OPO

PDX

29h 15m

1 stop

$790British Airways

Wed, Nov 4 - Thu, Nov 12

11:10 am - 3:10 pm

PDX

LIS

20h 00m

2 stops

5:00 am - 11:20 am

LIS

PDX

14h 20m

1 stop

$793Delta

Sun, Nov 1 - Wed, Nov 11

1:20 pm - 9:30 am

PDX

FAO

36h 10m

1 stop

2:40 pm - 7:43 pm

FAO

PDX

37h 03m

2 stops

$912KLM

Mon, Nov 30 - Mon, Dec 7

10:15 am - 1:50 pm

PDX

FAO

19h 35m

2 stops

2:40 pm - 7:43 pm

FAO

PDX

37h 03m

2 stops

$917KLM

Mon, Nov 30 - Mon, Dec 7

10:56 am - 8:40 am

PDX

PDL

14h 44m

1 stop

11:00 am - 10:03 pm

PDL

PDX

18h 03m

1 stop

$1,178United Airlines

Tue, Sep 1 - Wed, Sep 16

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Icelandair flights from Portland to Portugal

Our best Icelandair deals on Portland to Portugal flight tickets

Icelandair

Nov 2

PDX2:45 pmPortland

14h 05m

1 stop

LIS12:50 pmLisbon Humberto Delgado

Nov 10

LIS2:00 pmLisbon Humberto Delgado

35h 00m

1 stop

PDX5:00 pmPortland

$758

Icelandair

Oct 31

PDX3:45 pmPortland

14h 05m

1 stop

LIS12:50 pmLisbon Humberto Delgado

Nov 10

LIS2:00 pmLisbon Humberto Delgado

35h 00m

1 stop

PDX5:00 pmPortland

$780

Icelandair

Oct 31

PDX3:45 pmPortland

14h 05m

1 stop

LIS12:50 pmLisbon Humberto Delgado

Nov 12

LIS2:00 pmLisbon Humberto Delgado

35h 00m

1 stop

PDX5:00 pmPortland

$781

Delta flights from Portland to Portugal

Our best Delta deals on Portland to Portugal flight tickets

Delta

Nov 1

PDX7:00 amPortland

17h 00m

1 stop

LIS8:00 amLisbon Humberto Delgado

Nov 10

LIS11:30 amLisbon Humberto Delgado

31h 50m

1 stop

PDX11:20 amPortland

$789

Delta

Nov 1

PDX11:10 amPortland

20h 00m

2 stops

LIS3:10 pmLisbon Humberto Delgado

Nov 10

LIS11:30 amLisbon Humberto Delgado

31h 50m

1 stop

PDX11:20 amPortland

$793

Delta

Oct 31

PDX10:55 pmPortland

26h 05m

2 stops

LIS8:00 amLisbon Humberto Delgado

Nov 27

LIS5:00 amLisbon Humberto Delgado

14h 20m

1 stop

PDX11:20 amPortland

$794

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandPorto

PDX - OPO

PDXOPO

Portland

Sun 11/1

5:30 am-7:40 am

2 stops18h 10m

Porto

Tue 11/10

8:20 am-11:51 pm

2 stops23h 31m

$755

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Mon 11/2

2:45 pm-12:50 pm

1 stop14h 05m

Lisbon Humberto Delgado

Tue 11/10

2:00 pm-5:00 pm

1 stop35h 00m

$758

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Sat 10/31

3:45 pm-12:50 pm

1 stop14h 05m

Lisbon Humberto Delgado

Tue 11/10

2:00 pm-5:00 pm

1 stop35h 00m

$780

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Sat 10/31

3:45 pm-12:50 pm

1 stop14h 05m

Lisbon Humberto Delgado

Thu 11/12

2:00 pm-5:00 pm

1 stop35h 00m

$781

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Sun 11/1

7:00 am-8:00 am

1 stop17h 00m

Lisbon Humberto Delgado

Tue 11/10

11:30 am-11:20 am

1 stop31h 50m

$789

PortlandPorto

PDX - OPO

PDXOPO

Portland

Wed 11/4

5:45 pm-5:50 pm

1 stop16h 05m

Porto

Thu 11/12

6:40 pm-3:55 pm

1 stop29h 15m

$790

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Sun 11/1

11:10 am-3:10 pm

2 stops20h 00m

Lisbon Humberto Delgado

Wed 11/11

5:00 am-11:20 am

1 stop14h 20m

$793

PortlandFaro

PDX - FAO

PDXFAO

Portland

Mon 11/30

1:20 pm-9:30 am

1 stop36h 10m

Faro

Mon 12/7

2:40 pm-7:43 pm

2 stops37h 03m

$912

PortlandFaro

PDX - FAO

PDXFAO

Portland

Mon 11/30

10:15 am-1:50 pm

2 stops19h 35m

Faro

Mon 12/7

2:40 pm-7:43 pm

2 stops37h 03m

$917

Quickest round-trip

PortlandPonta Delgada

PDX - PDL

PDXPDL

Portland

Tue 9/1

10:56 am-8:40 am

1 stop14h 44m

Ponta Delgada Nordela

Wed 9/16

11:00 am-10:03 pm

1 stop18h 03m

$1,178

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 March. Flight prices, which tend to average around $360, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of March, then book flights to Portugal from Portland during November instead. Flights to Portugal in November, while not as cheap as those in March, still average around $364.

How far in advance should I book a flight from Portland 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 $835 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 $702 on momondo.

Can stopping save me money on Portland to Portugal flights?

You could potentially save up to 9% 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 10m
Direct flights	None

The fastest flight from Portland to Portugal takes 14h 10m

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 June 2026, there are 7 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 7.0 672 reviews	Search Icelandair flights
KLM	PriceFrom $492	Free Cancellation	Rating 7.8 1,527 reviews	Search KLM flights
Delta	PriceFrom $494	Free Cancellation	Rating 7.9 8,400 reviews	Search Delta flights
Lufthansa	PriceFrom $501	Free Cancellation	Rating 6.8 8,052 reviews	Search Lufthansa flights
United Airlines	PriceFrom $502	Free Cancellation	Rating 7.4 9,808 reviews	Search United Airlines flights
British Airways	PriceFrom $510	Free Cancellation	Rating 6.7 8,042 reviews	Search British Airways flights
Air Canada	PriceFrom $577	Free Cancellation	Rating 7.1 11,159 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 $482

Flights to Portofrom $368

Flights to Funchalfrom $590

Flights to Farofrom $579

Flights to Ponta Delgadafrom $580

Flights to Lajesfrom $623

Flights to Hortafrom $822

Flights to Pico Islandfrom $761

Flights to Porto Santofrom $544

Flights to Velasfrom $773

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 10/31. 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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Icelandair flights from Portland to Portugal

Our best Icelandair deals on Portland to Portugal flight tickets

Delta flights from Portland to Portugal

Our best Delta deals on Portland to Portugal flight tickets

momondo Fare Finder

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

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 from Portland 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