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

American Airlines, Air Canada, 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 39% 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.

$247 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.

3:15 pm - 9:20 am

PDX

LIS

34h 05m

2 stops

6:25 pm - 10:34 pm

LIS

PDX

36h 09m

2 stops

$603Multiple Airlines

sab, apr 18 - mar, apr 28

11:59 pm - 10:30 am

PDX

LIS

26h 31m

2 stops

11:25 am - 10:35 pm

LIS

PDX

43h 10m

2 stops

$612United Airlines

sab, apr 25 - mar, mag 5

3:15 pm - 9:20 am

PDX

LIS

34h 05m

2 stops

7:25 am - 11:59 pm

LIS

PDX

24h 34m

2 stops

$613Lufthansa

dom, apr 19 - lun, apr 27

4:15 pm - 8:20 am

PDX

LIS

32h 05m

2 stops

10:25 am - 11:55 pm

LIS

PDX

21h 30m

2 stops

$617United Airlines

sab, apr 25 - ven, mag 8

1:39 pm - 11:15 am

PDX

LIS

37h 36m

2 stops

6:25 pm - 10:34 pm

LIS

PDX

36h 09m

2 stops

$627SWISS

lun, apr 20 - mar, apr 28

2:30 pm - 10:15 pm

PDX

LIS

23h 45m

2 stops

5:05 am - 6:34 pm

LIS

PDX

21h 29m

2 stops

$634Lufthansa

lun, apr 13 - lun, apr 27

7:30 pm - 8:35 pm

PDX

OPO

17h 05m

1 stop

8:55 pm - 5:40 pm

OPO

PDX

28h 45m

1 stop

$742British Airways

dom, apr 19 - mar, mag 5

1:05 pm - 3:30 pm

PDX

OPO

18h 25m

1 stop

4:20 pm - 11:10 am

OPO

PDX

26h 50m

1 stop

$791KLM

lun, apr 27 - lun, mag 4

3:35 pm - 3:30 pm

PDX

OPO

15h 55m

2 stops

4:20 pm - 11:10 am

OPO

PDX

26h 50m

1 stop

$792KLM

lun, apr 27 - lun, mag 4

7:30 pm - 7:05 pm

PDX

FAO

15h 35m

1 stop

6:45 pm - 4:59 pm

FAO

PDX

30h 14m

2 stops

$974British Airways

ven, apr 17 - sab, apr 25

United Airlines flights from Portland to Portugal

Our best United Airlines deals on Portland to Portugal flight tickets

United Airlines

Apr 25

PDX11:59 pmPortland

26h 31m

2 stops

LIS10:30 amLisbon Humberto Delgado

May 5

LIS11:25 amLisbon Humberto Delgado

43h 10m

2 stops

PDX10:35 pmPortland

$612

United Airlines

Apr 25

PDX4:15 pmPortland

32h 05m

2 stops

LIS8:20 amLisbon Humberto Delgado

May 8

LIS10:25 amLisbon Humberto Delgado

21h 30m

2 stops

PDX11:55 pmPortland

$617

United Airlines

Apr 19

PDX7:05 pmPortland

29h 15m

2 stops

LIS8:20 amLisbon Humberto Delgado

May 5

LIS12:20 pmLisbon Humberto Delgado

16h 22m

1 stop

PDX8:42 pmPortland

$661

KLM flights from Portland to Portugal

Our best KLM deals on Portland to Portugal flight tickets

KLM

Apr 26

PDX7:00 amPortland

17h 00m

1 stop

LIS8:00 amLisbon Humberto Delgado

May 9

LIS5:00 amLisbon Humberto Delgado

17h 48m

2 stops

PDX2:48 pmPortland

$652

KLM

Apr 26

PDX7:00 amPortland

17h 00m

1 stop

LIS8:00 amLisbon Humberto Delgado

May 9

LIS7:45 pmLisbon Humberto Delgado

23h 25m

1 stop

PDX11:10 amPortland

$656

KLM

Apr 12

PDX1:05 pmPortland

17h 30m

1 stop

LIS2:35 pmLisbon Humberto Delgado

Apr 25

LIS5:00 amLisbon Humberto Delgado

20h 01m

2 stops

PDX5:01 pmPortland

$670

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandLisbon

PDX - LIS

PDXLIS

Portland

sab 4/18

3:15 pm-9:20 am

2 stops34h 05m

Lisbon Humberto Delgado

mar 4/28

6:25 pm-10:34 pm

2 stops36h 09m

$603

PortlandLisbon

PDX - LIS

PDXLIS

Portland

sab 4/25

11:59 pm-10:30 am

2 stops26h 31m

Lisbon Humberto Delgado

mar 5/5

11:25 am-10:35 pm

2 stops43h 10m

$612

PortlandLisbon

PDX - LIS

PDXLIS

Portland

dom 4/19

3:15 pm-9:20 am

2 stops34h 05m

Lisbon Humberto Delgado

lun 4/27

7:25 am-11:59 pm

2 stops24h 34m

$613

PortlandLisbon

PDX - LIS

PDXLIS

Portland

sab 4/25

4:15 pm-8:20 am

2 stops32h 05m

Lisbon Humberto Delgado

ven 5/8

10:25 am-11:55 pm

2 stops21h 30m

$617

PortlandLisbon

PDX - LIS

PDXLIS

Portland

lun 4/20

1:39 pm-11:15 am

2 stops37h 36m

Lisbon Humberto Delgado

mar 4/28

6:25 pm-10:34 pm

2 stops36h 09m

$627

PortlandLisbon

PDX - LIS

PDXLIS

Portland

lun 4/13

2:30 pm-10:15 pm

2 stops23h 45m

Lisbon Humberto Delgado

lun 4/27

5:05 am-6:34 pm

2 stops21h 29m

$634

PortlandPorto

PDX - OPO

PDXOPO

Portland

dom 4/19

7:30 pm-8:35 pm

1 stop17h 05m

Porto

mar 5/5

8:55 pm-5:40 pm

1 stop28h 45m

$742

PortlandPorto

PDX - OPO

PDXOPO

Portland

lun 4/27

1:05 pm-3:30 pm

1 stop18h 25m

Porto

lun 5/4

4:20 pm-11:10 am

1 stop26h 50m

$791

Quickest round-trip

PortlandPorto

PDX - OPO

PDXOPO

Portland

lun 4/27

3:35 pm-3:30 pm

2 stops15h 55m

Porto

lun 5/4

4:20 pm-11:10 am

1 stop26h 50m

$792

PortlandFaro

PDX - FAO

PDXFAO

Portland

ven 4/17

7:30 pm-7:05 pm

1 stop15h 35m

Faro

sab 4/25

6:45 pm-4:59 pm

2 stops30h 14m

$974

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 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	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

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 7.1 622 reviews	Search Icelandair flights
KLM	PriceFrom $492	Free Cancellation	Rating 7.8 1,471 reviews	Search KLM flights
Delta	PriceFrom $494	Free Cancellation	Rating 7.9 8,292 reviews	Search Delta flights
Lufthansa	PriceFrom $501	Free Cancellation	Rating 6.8 7,854 reviews	Search Lufthansa flights
United Airlines	PriceFrom $502	Free Cancellation	Rating 7.4 9,427 reviews	Search United Airlines flights
British Airways	PriceFrom $512	Free Cancellation	Rating 6.7 7,794 reviews	Search British Airways flights
American Airlines	PriceFrom $516	Free Cancellation	Rating 7.1 11,466 reviews	Search American Airlines flights
Air Canada	PriceFrom $583	Free Cancellation	Rating 7.1 10,806 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 $435

Flights to Portofrom $442

Flights to Funchalfrom $492

Flights to Farofrom $387

Flights to Ponta Delgadafrom $529

Flights to Lajesfrom $568

Flights to Pico Islandfrom $588

Flights to Hortafrom $638

Flights to Porto Santofrom $590

Flights to Velasfrom $583

Cheap flights from Portland to Portugal from $247

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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Big names and deals

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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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United Airlines flights from Portland to Portugal

Our best United Airlines deals on Portland to Portugal flight tickets

KLM flights from Portland to Portugal

Our best KLM deals on Portland to Portugal flight tickets

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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 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