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

United Airlines, Lufthansa, 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 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 March 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.

$274 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 - 11:10 pm

PDX

LIS

19h 40m

1 stop

8:25 am - 11:54 pm

LIS

PDX

23h 29m

2 stops

$662Multiple Airlines

Mon, Apr 20 - Mon, Apr 27

2:30 pm - 10:10 pm

PDX

LIS

23h 40m

2 stops

5:05 am - 10:34 pm

LIS

PDX

25h 29m

2 stops

$671Lufthansa

Tue, Apr 21 - Tue, Apr 28

2:30 pm - 10:45 pm

PDX

LIS

24h 15m

2 stops

5:05 am - 8:48 pm

LIS

PDX

23h 43m

2 stops

$672Lufthansa

Mon, Apr 20 - Mon, Apr 27

7:30 pm - 5:55 pm

PDX

LIS

14h 25m

1 stop

6:45 pm - 5:40 pm

LIS

PDX

30h 55m

1 stop

$717British Airways

Tue, Apr 28 - Wed, May 13

7:30 pm - 11:05 pm

PDX

LIS

19h 35m

1 stop

6:45 pm - 10:56 pm

LIS

PDX

36h 11m

2 stops

$718British Airways

Thu, Apr 23 - Thu, Apr 30

1:09 pm - 4:00 pm

PDX

OPO

18h 51m

2 stops

8:20 am - 10:47 pm

OPO

PDX

22h 27m

2 stops

$786American Airlines

Mon, Apr 27 - Wed, May 13

8:00 am - 11:45 am

PDX

OPO

19h 45m

2 stops

8:20 am - 11:57 pm

OPO

PDX

23h 37m

2 stops

$814American Airlines

Tue, Apr 28 - Wed, May 6

5:30 am - 3:45 pm

PDX

OPO

26h 15m

2 stops

12:35 pm - 12:43 pm

OPO

PDX

32h 08m

2 stops

$834United Airlines

Tue, Apr 28 - Fri, May 8

1:05 pm - 3:30 pm

PDX

OPO

18h 25m

1 stop

4:20 pm - 11:10 am

OPO

PDX

26h 50m

1 stop

$847KLM

Tue, Apr 28 - Tue, May 5

5:00 am - 7:00 am

PDX

OPO

18h 00m

2 stops

11:50 am - 8:20 pm

OPO

PDX

40h 30m

2 stops

$854United Airlines

Tue, Aug 4 - Thu, Aug 20

British Airways flights from Portland to Portugal

Our best British Airways deals on Portland to Portugal flight tickets

British Airways

May 1

PDX7:30 pmPortland

30h 35m

1 stop

LIS10:05 amLisbon Humberto Delgado

May 11

LIS6:45 pmLisbon Humberto Delgado

30h 55m

1 stop

PDX5:40 pmPortland

$717

British Airways

Apr 23

PDX7:30 pmPortland

19h 35m

1 stop

LIS11:05 pmLisbon Humberto Delgado

Apr 30

LIS6:45 pmLisbon Humberto Delgado

36h 11m

2 stops

PDX10:56 pmPortland

$718

British Airways

Apr 26

PDX7:30 pmPortland

33h 25m

1 stop

LIS12:55 pmLisbon Humberto Delgado

May 13

LIS6:45 pmLisbon Humberto Delgado

30h 55m

1 stop

PDX5:40 pmPortland

$722

Lufthansa flights from Portland to Portugal

Our best Lufthansa deals on Portland to Portugal flight tickets

Lufthansa

Apr 21

PDX2:30 pmPortland

23h 40m

2 stops

LIS10:10 pmLisbon Humberto Delgado

Apr 28

LIS5:05 amLisbon Humberto Delgado

25h 29m

2 stops

PDX10:34 pmPortland

$671

Lufthansa

Apr 20

PDX2:30 pmPortland

24h 15m

2 stops

LIS10:45 pmLisbon Humberto Delgado

Apr 27

LIS5:05 amLisbon Humberto Delgado

23h 43m

2 stops

PDX8:48 pmPortland

$672

Lufthansa

Apr 23

PDX2:30 pmPortland

23h 45m

2 stops

LIS10:15 pmLisbon Humberto Delgado

Apr 30

LIS7:25 amLisbon Humberto Delgado

24h 34m

2 stops

PDX11:59 pmPortland

$721

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Mon 4/20

7:30 pm-11:10 pm

1 stop19h 40m

Lisbon Humberto Delgado

Mon 4/27

8:25 am-11:54 pm

2 stops23h 29m

$662

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Tue 4/21

2:30 pm-10:10 pm

2 stops23h 40m

Lisbon Humberto Delgado

Tue 4/28

5:05 am-10:34 pm

2 stops25h 29m

$671

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Mon 4/20

2:30 pm-10:45 pm

2 stops24h 15m

Lisbon Humberto Delgado

Mon 4/27

5:05 am-8:48 pm

2 stops23h 43m

$672

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Tue 4/28

7:30 pm-5:55 pm

1 stop14h 25m

Lisbon Humberto Delgado

Wed 5/13

6:45 pm-5:40 pm

1 stop30h 55m

$717

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Thu 4/23

7:30 pm-11:05 pm

1 stop19h 35m

Lisbon Humberto Delgado

Thu 4/30

6:45 pm-10:56 pm

2 stops36h 11m

$718

Quickest round-trip

PortlandPorto

PDX - OPO

PDXOPO

Portland

Mon 4/27

1:09 pm-4:00 pm

2 stops18h 51m

Porto

Wed 5/13

8:20 am-10:47 pm

2 stops22h 27m

$786

PortlandPorto

PDX - OPO

PDXOPO

Portland

Tue 4/28

8:00 am-11:45 am

2 stops19h 45m

Porto

Wed 5/6

8:20 am-11:57 pm

2 stops23h 37m

$814

PortlandPorto

PDX - OPO

PDXOPO

Portland

Tue 4/28

5:30 am-3:45 pm

2 stops26h 15m

Porto

Fri 5/8

12:35 pm-12:43 pm

2 stops32h 08m

$834

PortlandPorto

PDX - OPO

PDXOPO

Portland

Tue 4/28

1:05 pm-3:30 pm

1 stop18h 25m

Porto

Tue 5/5

4:20 pm-11:10 am

1 stop26h 50m

$847

PortlandPorto

PDX - OPO

PDXOPO

Portland

Tue 8/4

5:00 am-7:00 am

2 stops18h 00m

Porto

Thu 8/20

11:50 am-8:20 pm

2 stops40h 30m

$854

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 $557, 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 $601.

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 $829 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 $763 on momondo.

Can stopping save me money on Portland to Portugal flights?

You could potentially save up to 27% 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 25m
Direct flights	None

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

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

Search flight deals

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 March 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 7.0 627 reviews	Search Icelandair flights
KLM	PriceFrom $492	Free Cancellation	Rating 7.8 1,477 reviews	Search KLM flights
Delta	PriceFrom $494	Free Cancellation	Rating 7.9 8,353 reviews	Search Delta flights
Lufthansa	PriceFrom $501	Free Cancellation	Rating 6.8 7,871 reviews	Search Lufthansa flights
United Airlines	PriceFrom $502	Free Cancellation	Rating 7.4 9,500 reviews	Search United Airlines flights
British Airways	PriceFrom $511	Free Cancellation	Rating 6.7 7,825 reviews	Search British Airways flights
American Airlines	PriceFrom $524	Free Cancellation	Rating 7.1 11,519 reviews	Search American Airlines flights
Air Canada	PriceFrom $577	Free Cancellation	Rating 7.1 10,853 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 $433

Flights to Portofrom $427

Flights to Funchalfrom $565

Flights to Farofrom $471

Flights to Ponta Delgadafrom $569

Flights to Lajesfrom $559

Flights to Pico Islandfrom $582

Flights to Hortafrom $596

Flights to Porto Santofrom $931

Flights to Velasfrom $713

Cheap flights from Portland to Portugal from $274

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 4/27. 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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Filter for what you want

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Find the cheapest flights from Portland to Portugal

Cheap round-trip flights

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British Airways flights from Portland to Portugal

Our best British Airways deals on Portland to Portugal flight tickets

Lufthansa flights from Portland to Portugal

Our best Lufthansa 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

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