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

British Airways, Air France, and KLM are the most popular carriers operating from Portland to Portugal

What airlines fly to Portugal?

British Airways, KLM 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 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 July 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.

$297 Cheap Flights from Portland to Portugal in 2026

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.

2:45 pm - 12:50 pm

PDX

LIS

14h 05m

1 stop

2:00 pm - 5:00 pm

LIS

PDX

35h 00m

1 stop

$714Icelandair

Sat, Nov 7 - Thu, Nov 12

10:00 am - 9:30 am

PDX

OPO

15h 30m

1 stop

6:00 am - 6:31 pm

OPO

PDX

20h 31m

2 stops

$736Multiple Airlines

Tue, Nov 17 - Wed, Dec 9

7:10 am - 10:00 pm

PDX

OPO

30h 50m

2 stops

5:00 am - 11:20 am

OPO

PDX

14h 20m

1 stop

$741Delta

Sun, Jan 17 - Fri, Feb 12

3:30 pm - 9:20 am

PDX

LIS

33h 50m

2 stops

5:00 am - 7:12 pm

LIS

PDX

22h 12m

2 stops

$745Lufthansa

Tue, Oct 20 - Tue, Nov 10

9:40 am - 10:00 pm

PDX

OPO

28h 20m

2 stops

5:00 am - 4:27 pm

OPO

PDX

19h 27m

2 stops

$751Delta

Sun, Jan 17 - Wed, Feb 10

10:58 am - 8:20 am

PDX

LIS

13h 22m

1 stop

12:50 pm - 11:53 am

LIS

PDX

31h 03m

2 stops

$751United Airlines

Tue, Oct 20 - Tue, Nov 10

8:45 am - 12:50 pm

PDX

OPO

20h 05m

2 stops

1:45 pm - 11:12 pm

OPO

PDX

41h 27m

2 stops

$770Lufthansa

Mon, Jan 18 - Mon, Feb 8

1:20 pm - 3:25 pm

PDX

OPO

18h 05m

1 stop

5:00 am - 11:20 am

OPO

PDX

14h 20m

1 stop

$791KLM

Mon, Jan 18 - Mon, Feb 8

7:00 am - 9:30 am

PDX

OPO

18h 30m

2 stops

12:35 pm - 6:31 pm

OPO

PDX

37h 56m

2 stops

$801United Airlines

Wed, Nov 25 - Mon, Nov 30

3:00 pm - 5:25 pm

PDX

FAO

18h 25m

2 stops

8:35 pm - 11:10 am

FAO

PDX

22h 35m

1 stop

$976KLM

Mon, Aug 31 - Tue, Sep 15

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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 28

PDX7:00 amPortland

18h 55m

2 stops

LIS8:55 amLisbon Humberto Delgado

Nov 6

LIS11:20 amLisbon Humberto Delgado

30h 06m

2 stops

PDX9:26 amPortland

$743

Air Canada

Nov 8

PDX3:15 pmPortland

35h 25m

2 stops

LIS10:40 amLisbon Humberto Delgado

Nov 18

LIS5:00 amLisbon Humberto Delgado

17h 41m

2 stops

PDX2:41 pmPortland

$747

Air Canada

Dec 30

PDX7:00 amPortland

17h 55m

2 stops

LIS8:55 amLisbon Humberto Delgado

Jan 13

LIS11:20 amLisbon Humberto Delgado

43h 52m

2 stops

PDX11:12 pmPortland

$759

Lufthansa flights from Portland to Portugal

Our best Lufthansa deals on Portland to Portugal flight tickets

Lufthansa

Oct 20

PDX3:30 pmPortland

33h 50m

2 stops

LIS9:20 amLisbon Humberto Delgado

Nov 10

LIS5:00 amLisbon Humberto Delgado

22h 12m

2 stops

PDX7:12 pmPortland

$745

Lufthansa

Jan 18

PDX8:45 amPortland

20h 05m

2 stops

OPO12:50 pmPorto

Feb 8

OPO1:45 pmPorto

41h 27m

2 stops

PDX11:12 pmPortland

$770

Lufthansa

Oct 13

PDX3:30 pmPortland

33h 50m

2 stops

LIS9:20 amLisbon Humberto Delgado

Oct 21

LIS6:15 amLisbon Humberto Delgado

24h 42m

2 stops

PDX10:57 pmPortland

$777

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

Thu 11/12

2:00 pm-5:00 pm

1 stop35h 00m

$714

PortlandPorto

PDX - OPO

PDXOPO

Portland

Tue 11/17

10:00 am-9:30 am

1 stop15h 30m

Porto

Wed 12/9

6:00 am-6:31 pm

2 stops20h 31m

$736

PortlandPorto

PDX - OPO

PDXOPO

Portland

Sun 1/17

7:10 am-10:00 pm

2 stops30h 50m

Porto

Fri 2/12

5:00 am-11:20 am

1 stop14h 20m

$741

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Tue 10/20

3:30 pm-9:20 am

2 stops33h 50m

Lisbon Humberto Delgado

Tue 11/10

5:00 am-7:12 pm

2 stops22h 12m

$745

PortlandPorto

PDX - OPO

PDXOPO

Portland

Sun 1/17

9:40 am-10:00 pm

2 stops28h 20m

Porto

Wed 2/10

5:00 am-4:27 pm

2 stops19h 27m

$751

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Tue 10/20

10:58 am-8:20 am

1 stop13h 22m

Lisbon Humberto Delgado

Tue 11/10

12:50 pm-11:53 am

2 stops31h 03m

$751

PortlandPorto

PDX - OPO

PDXOPO

Portland

Mon 1/18

8:45 am-12:50 pm

2 stops20h 05m

Porto

Mon 2/8

1:45 pm-11:12 pm

2 stops41h 27m

$770

Quickest round-trip

PortlandPorto

PDX - OPO

PDXOPO

Portland

Mon 1/18

1:20 pm-3:25 pm

1 stop18h 05m

Porto

Mon 2/8

5:00 am-11:20 am

1 stop14h 20m

$791

PortlandPorto

PDX - OPO

PDXOPO

Portland

Wed 11/25

7:00 am-9:30 am

2 stops18h 30m

Porto

Mon 11/30

12:35 pm-6:31 pm

2 stops37h 56m

$801

PortlandFaro

PDX - FAO

PDXFAO

Portland

Mon 8/31

3:00 pm-5:25 pm

2 stops18h 25m

Faro

Tue 9/15

8:35 pm-11:10 am

1 stop22h 35m

$976

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 February. Flight prices, which tend to average around $623, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of February, then book flights to Portugal from Portland during November instead. Flights to Portugal in November, while not as cheap as those in February, still average around $647.

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 $864 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 $745 on momondo.

Can stopping save me money on Portland to Portugal flights?

You could potentially save up to 13% 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 05m
Direct flights	None

The fastest flight from Portland to Portugal takes 13h 05m

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 July 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
Virgin Atlantic	PriceFrom $318	Free Cancellation	Rating 7.5 695 reviews	Search Virgin Atlantic flights
Icelandair	PriceFrom $360	Free Cancellation	Rating 7.0 717 reviews	Search Icelandair flights
KLM	PriceFrom $492	Free Cancellation	Rating 7.8 1,550 reviews	Search KLM flights
Delta	PriceFrom $492	Free Cancellation	Rating 7.8 8,485 reviews	Search Delta flights
Lufthansa	PriceFrom $501	Free Cancellation	Rating 6.8 8,157 reviews	Search Lufthansa flights
United Airlines	PriceFrom $502	Free Cancellation	Rating 7.4 10,042 reviews	Search United Airlines flights
British Airways	PriceFrom $510	Free Cancellation	Rating 6.7 8,132 reviews	Search British Airways flights
Air Canada	PriceFrom $584	Free Cancellation	Rating 7.1 11,391 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

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Popular cities

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Feeling lucky

Popular cities in Portugal

Flights to Lisbonfrom $507

Flights to Portofrom $522

Flights to Funchalfrom $579

Flights to Farofrom $559

Flights to Ponta Delgadafrom $457

Flights to Lajesfrom $470

Flights to Hortafrom $674

Flights to Pico Islandfrom $687

Flights to Porto Santofrom $751

Flights to Velasfrom $629

Cheap flights from Portland to Portugal from $297

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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Air Canada flights from Portland to Portugal

Our best Air Canada 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 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

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