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

American Airlines, British Airways, and Delta 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 April 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.

$311 Cheap Flights from Portland to Portugal in 2026

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0 bags

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.

7:45 pm - 9:20 am

PDX

LIS

29h 35m

2 stops

5:00 am - 6:30 pm

LIS

PDX

21h 30m

2 stops

$705Air Canada

mar., oct. 20 - lun., nov. 23

7:30 pm - 11:00 pm

PDX

LIS

19h 30m

1 stop

4:10 pm - 7:15 pm

LIS

PDX

35h 05m

2 stops

$710Multiple Airlines

mar., oct. 20 - mar., nov. 10

7:30 pm - 11:00 pm

PDX

LIS

19h 30m

1 stop

6:30 am - 9:20 pm

LIS

PDX

22h 50m

2 stops

$714Multiple Airlines

mar., oct. 20 - lun., nov. 23

12:45 pm - 9:20 am

PDX

LIS

36h 35m

3 stops

5:00 am - 8:33 pm

LIS

PDX

23h 33m

2 stops

$719United Airlines

mar., oct. 20 - lun., nov. 23

8:25 am - 10:30 am

PDX

LIS

18h 05m

1 stop

11:55 am - 8:25 pm

LIS

PDX

16h 30m

1 stop

$728United Airlines

mar., oct. 20 - lun., nov. 23

7:30 pm - 11:00 pm

PDX

LIS

19h 30m

1 stop

7:40 pm - 3:55 pm

LIS

PDX

28h 15m

1 stop

$739British Airways

mar., oct. 20 - mar., nov. 10

7:00 am - 8:00 am

PDX

LIS

17h 00m

1 stop

11:25 am - 11:25 am

LIS

PDX

32h 00m

1 stop

$781KLM

mar., oct. 20 - mar., nov. 10

7:30 pm - 7:30 pm

PDX

OPO

16h 00m

1 stop

7:50 pm - 3:55 pm

OPO

PDX

28h 05m

1 stop

$842British Airways

mar., oct. 20 - sáb., nov. 7

11:10 am - 7:30 pm

PDX

FAO

24h 20m

2 stops

8:20 pm - 11:10 am

FAO

PDX

22h 50m

1 stop

$1,079KLM

mié., sep. 9 - mié., sep. 16

7:05 pm - 9:00 pm

PDX

FAO

17h 55m

1 stop

4:30 pm - 5:55 pm

FAO

PDX

33h 25m

1 stop

$1,124Icelandair

vie., sep. 11 - sáb., sep. 19

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Air Canada flights from Portland to Portugal

Our best Air Canada deals on Portland to Portugal flight tickets

Air Canada

Oct 20

PDX7:45 pmPortland

29h 35m

2 stops

LIS9:20 amLisbon Humberto Delgado

Nov 23

LIS5:00 amLisbon Humberto Delgado

21h 30m

2 stops

PDX6:30 pmPortland

$705

Air Canada

Aug 5

PDX10:10 amPortland

16h 55m

2 stops

LIS11:05 amLisbon Humberto Delgado

Aug 20

LIS1:00 pmLisbon Humberto Delgado

28h 31m

2 stops

PDX9:31 amPortland

$815

Air Canada

Oct 19

PDX7:45 pmPortland

27h 15m

2 stops

OPO7:00 amPorto

Nov 1

OPO6:15 amPorto

20h 15m

2 stops

PDX7:30 pmPortland

$843

United Airlines flights from Portland to Portugal

Our best United Airlines deals on Portland to Portugal flight tickets

United Airlines

Oct 20

PDX12:45 pmPortland

36h 35m

3 stops

LIS9:20 amLisbon Humberto Delgado

Nov 23

LIS5:00 amLisbon Humberto Delgado

23h 33m

2 stops

PDX8:33 pmPortland

$719

United Airlines

Oct 20

PDX8:25 amPortland

18h 05m

1 stop

LIS10:30 amLisbon Humberto Delgado

Nov 23

LIS11:55 amLisbon Humberto Delgado

16h 30m

1 stop

PDX8:25 pmPortland

$728

United Airlines

Oct 19

PDX10:56 amPortland

14h 49m

1 stop

OPO9:45 amPorto

Oct 29

OPO6:00 amPorto

23h 18m

2 stops

PDX10:18 pmPortland

$833

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandLisbon

PDX - LIS

PDXLIS

Portland

mar. 10/20

7:45 pm-9:20 am

2 stops29h 35m

Lisbon Humberto Delgado

lun. 11/23

5:00 am-6:30 pm

2 stops21h 30m

$705

PortlandLisbon

PDX - LIS

PDXLIS

Portland

mar. 10/20

7:30 pm-11:00 pm

1 stop19h 30m

Lisbon Humberto Delgado

mar. 11/10

4:10 pm-7:15 pm

2 stops35h 05m

$710

PortlandLisbon

PDX - LIS

PDXLIS

Portland

mar. 10/20

7:30 pm-11:00 pm

1 stop19h 30m

Lisbon Humberto Delgado

lun. 11/23

6:30 am-9:20 pm

2 stops22h 50m

$714

PortlandLisbon

PDX - LIS

PDXLIS

Portland

mar. 10/20

12:45 pm-9:20 am

3 stops36h 35m

Lisbon Humberto Delgado

lun. 11/23

5:00 am-8:33 pm

2 stops23h 33m

$719

Quickest round-trip

PortlandLisbon

PDX - LIS

PDXLIS

Portland

mar. 10/20

8:25 am-10:30 am

1 stop18h 05m

Lisbon Humberto Delgado

lun. 11/23

11:55 am-8:25 pm

1 stop16h 30m

$728

PortlandLisbon

PDX - LIS

PDXLIS

Portland

mar. 10/20

7:30 pm-11:00 pm

1 stop19h 30m

Lisbon Humberto Delgado

mar. 11/10

7:40 pm-3:55 pm

1 stop28h 15m

$739

PortlandLisbon

PDX - LIS

PDXLIS

Portland

mar. 10/20

7:00 am-8:00 am

1 stop17h 00m

Lisbon Humberto Delgado

mar. 11/10

11:25 am-11:25 am

1 stop32h 00m

$781

PortlandPorto

PDX - OPO

PDXOPO

Portland

mar. 10/20

7:30 pm-7:30 pm

1 stop16h 00m

Porto

sáb. 11/7

7:50 pm-3:55 pm

1 stop28h 05m

$842

PortlandFaro

PDX - FAO

PDXFAO

Portland

mié. 9/9

11:10 am-7:30 pm

2 stops24h 20m

Faro

mié. 9/16

8:20 pm-11:10 am

1 stop22h 50m

$1,079

PortlandFaro

PDX - FAO

PDXFAO

Portland

vie. 9/11

7:05 pm-9:00 pm

1 stop17h 55m

Faro

sáb. 9/19

4:30 pm-5:55 pm

1 stop33h 25m

$1,124

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 $559, 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 $599.

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 $824 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 $685 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 49m
Direct flights	None

The fastest flight from Portland to Portugal takes 14h 49m

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 April 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 7.0 641 reviews	Search Icelandair flights
KLM	PriceFrom $492	Free Cancellation	Rating 7.8 1,509 reviews	Search KLM flights
Delta	PriceFrom $494	Free Cancellation	Rating 7.9 8,459 reviews	Search Delta flights
Lufthansa	PriceFrom $501	Free Cancellation	Rating 6.8 7,950 reviews	Search Lufthansa flights
British Airways	PriceFrom $510	Free Cancellation	Rating 6.7 7,915 reviews	Search British Airways flights
American Airlines	PriceFrom $524	Free Cancellation	Rating 7.1 11,673 reviews	Search American Airlines flights
United Airlines	PriceFrom $537	Free Cancellation	Rating 7.4 9,653 reviews	Search United Airlines flights
Air Canada	PriceFrom $577	Free Cancellation	Rating 7.1 10,966 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

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Complete your trip

Feeling lucky

Popular cities in Portugal

Flights to Lisbonfrom $473

Flights to Portofrom $563

Flights to Funchalfrom $630

Flights to Farofrom $584

Flights to Ponta Delgadafrom $630

Flights to Lajesfrom $674

Flights to Pico Islandfrom $749

Flights to Hortafrom $724

Flights to Porto Santofrom $893

Flights to Velasfrom $712

Cheap flights from Portland to Portugal from $311

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 5/10. 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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Air Canada flights from Portland to Portugal

Our best Air Canada deals on Portland to Portugal flight tickets

United Airlines flights from Portland to Portugal

Our best United Airlines 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 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