What airlines fly to Portugal?

British Airways, United Airlines and Delta 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.

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

Lufthansa, United Airlines, and KLM are the most popular carriers operating 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 February 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.

$243 Cheap Flights from Portland to Portugal in 2026

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One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

6:22 am - 11:25 pm

PDX

LIS

33h 03m

2 stops

6:35 am - 10:42 pm

LIS

PDX

24h 07m

2 stops

$508Finnair

Mon, Apr 13 - Mon, Apr 27

6:22 am - 11:25 pm

PDX

LIS

33h 03m

2 stops

6:35 am - 10:42 pm

LIS

PDX

24h 07m

2 stops

$509Finnair

Mon, Apr 13 - Mon, Apr 27

11:15 pm - 9:20 am

PDX

LIS

26h 05m

2 stops

12:20 pm - 8:42 pm

LIS

PDX

16h 22m

1 stop

$511United Airlines

Tue, Apr 7 - Wed, Apr 15

1:05 pm - 10:50 pm

PDX

LIS

25h 45m

1 stop

7:45 pm - 11:10 am

LIS

PDX

23h 25m

1 stop

$522KLM

Mon, Apr 20 - Sun, Apr 26

1:05 pm - 6:45 pm

PDX

LIS

21h 40m

1 stop

11:55 am - 11:10 am

LIS

PDX

31h 15m

1 stop

$535KLM

Sun, Apr 5 - Sat, Apr 18

1:32 pm - 10:05 pm

PDX

OPO

24h 33m

2 stops

11:45 am - 11:10 am

OPO

PDX

31h 25m

1 stop

$682Delta

Tue, Apr 28 - Wed, May 6

1:05 pm - 6:20 pm

PDX

OPO

21h 15m

1 stop

5:00 am - 11:10 am

OPO

PDX

14h 10m

1 stop

$683Delta

Tue, Apr 28 - Fri, May 8

4:15 pm - 3:40 pm

PDX

OPO

39h 25m

2 stops

6:00 am - 9:14 pm

OPO

PDX

23h 14m

2 stops

$713United Airlines

Tue, Apr 7 - Tue, Apr 14

7:30 pm - 7:05 pm

PDX

FAO

15h 35m

1 stop

11:30 am - 5:40 pm

FAO

PDX

14h 10m

1 stop

$739British Airways

Thu, Apr 2 - Tue, Apr 21

3:52 pm - 12:50 pm

PDX

FAO

36h 58m

2 stops

7:05 pm - 10:41 pm

FAO

PDX

34h 36m

2 stops

$946British Airways

Thu, Mar 5 - Mon, Mar 9

Finnair flights from Portland to Portugal

Our best Finnair deals on Portland to Portugal flight tickets

Finnair

Apr 13

PDX6:22 amPortland

33h 03m

2 stops

LIS11:25 pmLisbon Humberto Delgado

Apr 27

LIS6:35 amLisbon Humberto Delgado

24h 07m

2 stops

PDX10:42 pmPortland

$508

Finnair

Apr 7

PDX6:00 amPortland

25h 50m

2 stops

LIS3:50 pmLisbon Humberto Delgado

Apr 18

LIS6:35 amLisbon Humberto Delgado

24h 22m

2 stops

PDX10:57 pmPortland

$509

Finnair

Apr 28

PDX7:00 amPortland

24h 50m

2 stops

LIS3:50 pmLisbon Humberto Delgado

May 13

LIS6:35 amLisbon Humberto Delgado

24h 12m

2 stops

PDX10:47 pmPortland

$552

United Airlines flights from Portland to Portugal

Our best United Airlines deals on Portland to Portugal flight tickets

United Airlines

Apr 7

PDX11:15 pmPortland

26h 05m

2 stops

LIS9:20 amLisbon Humberto Delgado

Apr 15

LIS12:20 pmLisbon Humberto Delgado

16h 22m

1 stop

PDX8:42 pmPortland

$511

United Airlines

May 2

PDX7:45 pmPortland

35h 45m

2 stops

LIS3:30 pmLisbon Humberto Delgado

May 12

LIS5:05 amLisbon Humberto Delgado

22h 00m

2 stops

PDX7:05 pmPortland

$546

United Airlines

May 6

PDX11:55 pmPortland

27h 05m

2 stops

LIS11:00 amLisbon Humberto Delgado

May 14

LIS5:05 amLisbon Humberto Delgado

25h 54m

2 stops

PDX10:59 pmPortland

$548

Fly from

Fly to

Route

Depart

Return

Price

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Mon 4/13

6:22 am-11:25 pm

2 stops33h 03m

Lisbon Humberto Delgado

Mon 4/27

6:35 am-10:42 pm

2 stops24h 07m

$508

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Mon 4/13

6:22 am-11:25 pm

2 stops33h 03m

Lisbon Humberto Delgado

Mon 4/27

6:35 am-10:42 pm

2 stops24h 07m

$509

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Tue 4/7

11:15 pm-9:20 am

2 stops26h 05m

Lisbon Humberto Delgado

Wed 4/15

12:20 pm-8:42 pm

1 stop16h 22m

$511

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Mon 4/20

1:05 pm-10:50 pm

1 stop25h 45m

Lisbon Humberto Delgado

Sun 4/26

7:45 pm-11:10 am

1 stop23h 25m

$522

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Sun 4/5

1:05 pm-6:45 pm

1 stop21h 40m

Lisbon Humberto Delgado

Sat 4/18

11:55 am-11:10 am

1 stop31h 15m

$535

PortlandPorto

PDX - OPO

PDXOPO

Portland

Tue 4/28

1:32 pm-10:05 pm

2 stops24h 33m

Porto

Wed 5/6

11:45 am-11:10 am

1 stop31h 25m

$682

PortlandPorto

PDX - OPO

PDXOPO

Portland

Tue 4/28

1:05 pm-6:20 pm

1 stop21h 15m

Porto

Fri 5/8

5:00 am-11:10 am

1 stop14h 10m

$683

PortlandPorto

PDX - OPO

PDXOPO

Portland

Tue 4/7

4:15 pm-3:40 pm

2 stops39h 25m

Porto

Tue 4/14

6:00 am-9:14 pm

2 stops23h 14m

$713

PortlandFaro

PDX - FAO

PDXFAO

Portland

Thu 4/2

7:30 pm-7:05 pm

1 stop15h 35m

Faro

Tue 4/21

11:30 am-5:40 pm

1 stop14h 10m

$739

PortlandFaro

PDX - FAO

PDXFAO

Portland

Thu 3/5

3:52 pm-12:50 pm

2 stops36h 58m

Faro

Mon 3/9

7:05 pm-10:41 pm

2 stops34h 36m

$946

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 $831 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 $749 on momondo.

Can stopping save me money on Portland to Portugal flights?

You could potentially save up to 15% 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	13h 35m
Direct flights	None

The fastest flight from Portland to Portugal takes 13h 35m

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 February 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 7.1 617 reviews	Search Icelandair flights
KLM	PriceFrom $492	Free Cancellation	Rating 7.7 1,458 reviews	Search KLM flights
Delta	PriceFrom $494	Free Cancellation	Rating 7.9 8,238 reviews	Search Delta flights
Lufthansa	PriceFrom $501	Free Cancellation	Rating 6.8 7,803 reviews	Search Lufthansa flights
British Airways	PriceFrom $514	Free Cancellation	Rating 6.7 7,757 reviews	Search British Airways flights
American Airlines	PriceFrom $524	Free Cancellation	Rating 7.2 11,341 reviews	Search American Airlines flights
United Airlines	PriceFrom $537	Free Cancellation	Rating 7.4 9,339 reviews	Search United Airlines flights
Air Canada	PriceFrom $584	Free Cancellation	Rating 7.1 10,740 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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Feeling lucky

Popular cities in Portugal

Flights to Lisbonfrom $389

Flights to Portofrom $364

Flights to Funchalfrom $375

Flights to Farofrom $371

Flights to Ponta Delgadafrom $450

Flights to Lajesfrom $560

Flights to Pico Islandfrom $610

Flights to Hortafrom $549

Flights to Porto Santofrom $828

Flights to Velasfrom $581

Cheap flights from Portland to Portugal from $243

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 4/13. 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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Finnair flights from Portland to Portugal

Our best Finnair 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?

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

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

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

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

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