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

Alaska Airlines, British Airways, and United Airlines 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 May 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.

$280 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.

2:45 pm - 12:50 pm

PDX

LIS

14h 05m

1 stop

2:00 pm - 5:00 pm

LIS

PDX

35h 00m

1 stop

$751Icelandair

Sat, Nov 7 - Sun, Nov 15

7:00 am - 8:00 am

PDX

LIS

17h 00m

1 stop

4:45 pm - 11:20 am

LIS

PDX

26h 35m

1 stop

$790KLM

Tue, Oct 20 - Tue, Nov 10

7:05 pm - 9:05 am

PDX

LIS

30h 00m

3 stops

6:15 am - 1:50 pm

LIS

PDX

39h 35m

3 stops

$793Multiple Airlines

Sun, Aug 16 - Mon, Aug 31

11:10 am - 11:15 am

PDX

LIS

16h 05m

2 stops

3:35 pm - 11:20 am

LIS

PDX

27h 45m

1 stop

$794Multiple Airlines

Tue, Oct 20 - Tue, Nov 10

6:45 pm - 5:45 pm

PDX

LIS

16h 00m

1 stop

6:30 am - 10:59 pm

LIS

PDX

24h 29m

2 stops

$796Multiple Airlines

Sun, Oct 25 - Tue, Nov 3

11:10 am - 3:10 pm

PDX

LIS

21h 00m

2 stops

5:00 am - 9:53 pm

LIS

PDX

24h 53m

2 stops

$803Delta

Sun, Oct 25 - Tue, Nov 3

2:20 pm - 2:40 pm

PDX

LIS

17h 20m

1 stop

5:00 am - 9:53 pm

LIS

PDX

24h 53m

2 stops

$804Delta

Sun, Oct 25 - Tue, Nov 3

7:45 pm - 7:00 am

PDX

OPO

27h 15m

2 stops

11:20 am - 10:52 pm

OPO

PDX

43h 32m

2 stops

$849Air Canada

Sun, Aug 16 - Wed, Aug 26

11:17 pm - 6:15 am

PDX

OPO

22h 58m

1 stop

11:20 am - 9:59 pm

OPO

PDX

42h 39m

2 stops

$850United Airlines

Mon, Aug 17 - Wed, Aug 26

5:00 am - 7:00 am

PDX

OPO

18h 00m

2 stops

12:15 pm - 1:16 pm

OPO

PDX

33h 01m

2 stops

$854United Airlines

Wed, Sep 23 - Tue, Sep 29

KLM flights from Portland to Portugal

Our best KLM deals on Portland to Portugal flight tickets

KLM

Oct 20

PDX7:00 amPortland

17h 00m

1 stop

LIS8:00 amLisbon Humberto Delgado

Nov 10

LIS4:45 pmLisbon Humberto Delgado

26h 35m

1 stop

PDX11:20 amPortland

$790

KLM

Nov 22

PDX10:05 pmPortland

25h 55m

1 stop

LIS8:00 amLisbon Humberto Delgado

Dec 4

LIS11:30 amLisbon Humberto Delgado

20h 17m

2 stops

PDX11:47 pmPortland

$808

KLM

Oct 18

PDX1:05 pmPortland

25h 45m

1 stop

LIS10:50 pmLisbon Humberto Delgado

Oct 29

LIS11:30 amLisbon Humberto Delgado

31h 50m

1 stop

PDX12:20 pmPortland

$838

Scandinavian Airlines flights from Portland to Portugal

Our best Scandinavian Airlines deals on Portland to Portugal flight tickets

Scandinavian Airlines

Oct 27

PDX1:00 pmPortland

44h 05m

2 stops

LIS4:05 pmLisbon Humberto Delgado

Nov 10

LIS4:55 pmLisbon Humberto Delgado

37h 31m

2 stops

PDX10:26 pmPortland

$799

Scandinavian Airlines

Nov 13

PDX1:00 pmPortland

43h 05m

2 stops

LIS4:05 pmLisbon Humberto Delgado

Nov 22

LIS4:55 pmLisbon Humberto Delgado

37h 31m

2 stops

PDX10:26 pmPortland

$833

Scandinavian Airlines

Oct 25

PDX10:00 amPortland

47h 05m

2 stops

LIS4:05 pmLisbon Humberto Delgado

Nov 9

LIS4:55 pmLisbon Humberto Delgado

37h 31m

2 stops

PDX10:26 pmPortland

$842

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Sat 11/7

2:45 pm-12:50 pm

1 stop14h 05m

Lisbon Humberto Delgado

Sun 11/15

2:00 pm-5:00 pm

1 stop35h 00m

$751

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Tue 10/20

7:00 am-8:00 am

1 stop17h 00m

Lisbon Humberto Delgado

Tue 11/10

4:45 pm-11:20 am

1 stop26h 35m

$790

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Sun 8/16

7:05 pm-9:05 am

3 stops30h 00m

Lisbon Humberto Delgado

Mon 8/31

6:15 am-1:50 pm

3 stops39h 35m

$793

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Tue 10/20

11:10 am-11:15 am

2 stops16h 05m

Lisbon Humberto Delgado

Tue 11/10

3:35 pm-11:20 am

1 stop27h 45m

$794

Quickest round-trip

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Sun 10/25

6:45 pm-5:45 pm

1 stop16h 00m

Lisbon Humberto Delgado

Tue 11/3

6:30 am-10:59 pm

2 stops24h 29m

$796

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Sun 10/25

11:10 am-3:10 pm

2 stops21h 00m

Lisbon Humberto Delgado

Tue 11/3

5:00 am-9:53 pm

2 stops24h 53m

$803

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Sun 10/25

2:20 pm-2:40 pm

1 stop17h 20m

Lisbon Humberto Delgado

Tue 11/3

5:00 am-9:53 pm

2 stops24h 53m

$804

PortlandPorto

PDX - OPO

PDXOPO

Portland

Sun 8/16

7:45 pm-7:00 am

2 stops27h 15m

Porto

Wed 8/26

11:20 am-10:52 pm

2 stops43h 32m

$849

PortlandPorto

PDX - OPO

PDXOPO

Portland

Mon 8/17

11:17 pm-6:15 am

1 stop22h 58m

Porto

Wed 8/26

11:20 am-9:59 pm

2 stops42h 39m

$850

PortlandPorto

PDX - OPO

PDXOPO

Portland

Wed 9/23

5:00 am-7:00 am

2 stops18h 00m

Porto

Tue 9/29

12:15 pm-1:16 pm

2 stops33h 01m

$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 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 $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 $704 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	13h 47m
Direct flights	None

The fastest flight from Portland to Portugal takes 13h 47m

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 May 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 7.0 661 reviews	Search Icelandair flights
KLM	PriceFrom $492	Free Cancellation	Rating 7.8 1,524 reviews	Search KLM flights
Delta	PriceFrom $494	Free Cancellation	Rating 7.9 8,415 reviews	Search Delta flights
Lufthansa	PriceFrom $501	Free Cancellation	Rating 6.8 8,031 reviews	Search Lufthansa flights
United Airlines	PriceFrom $502	Free Cancellation	Rating 7.4 9,769 reviews	Search United Airlines flights
British Airways	PriceFrom $510	Free Cancellation	Rating 6.7 8,011 reviews	Search British Airways flights
Air Canada	PriceFrom $577	Free Cancellation	Rating 7.1 11,105 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

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Complete your trip

Feeling lucky

Popular cities in Portugal

Flights to Lisbonfrom $553

Flights to Portofrom $555

Flights to Funchalfrom $615

Flights to Farofrom $578

Flights to Ponta Delgadafrom $580

Flights to Lajesfrom $638

Flights to Pico Islandfrom $750

Flights to Hortafrom $713

Flights to Porto Santofrom $546

Flights to Velasfrom $808

Cheap flights from Portland to Portugal from $280

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 10/1. 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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Big names and deals

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Filter for what you want

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Cheap round-trip flights

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KLM flights from Portland to Portugal

Our best KLM deals on Portland to Portugal flight tickets

Scandinavian Airlines flights from Portland to Portugal

Our best Scandinavian Airlines 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