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

Delta, British Airways, and Air Canada 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 37% 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 November 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.

$306 Cheap Flights from Portland to Portugal in 2026/27

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 pmPDX Portland-LIS Lisbon Humberto Delgado

14h 05m1 stop Reykjavik Keflavik Intl

11:35 am - 5:00 pmLIS Lisbon Humberto Delgado-PDX Portland

13h 25m1 stop Reykjavik Keflavik Intl

$599Icelandair

Wed, Feb 3 - Tue, Feb 16

2:45 pm - 12:45 pmPDX Portland-LIS Lisbon Humberto Delgado

14h 00m1 stop Reykjavik Keflavik Intl

2:00 pm - 5:00 pmLIS Lisbon Humberto Delgado-PDX Portland

35h 00m1 stop Reykjavik Keflavik Intl

$628Icelandair

Mon, Dec 7 - Sun, Dec 13

7:00 am - 6:10 pmPDX Portland-LIS Lisbon Humberto Delgado

27h 10m3 stops Vancouver Intl Toronto Pearson Intl Kastrup Copenhagen

6:45 pm - 6:31 pmLIS Lisbon Humberto Delgado-PDX Portland

31h 46m3 stops Kastrup Copenhagen Frankfurt am Main Vancouver Intl

$698Multiple Airlines

Fri, Dec 4 - Sun, Dec 6

10:00 am - 11:45 amPDX Portland-OPO Porto

18h 45m2 stops Vancouver Intl Frankfurt am Main

6:00 am - 8:45 pmOPO Porto-PDX Portland

22h 45m2 stops Frankfurt am Main Vancouver Intl

$706Multiple Airlines

Tue, Mar 23 - Fri, Apr 2

12:45 pm - 10:55 amPDX Portland-OPO Porto

14h 10m1 stop Amsterdam Schiphol

5:00 am - 10:50 amOPO Porto-PDX Portland

13h 50m1 stop Amsterdam Schiphol

$725KLM

Tue, Apr 13 - Fri, Apr 23

2:20 pm - 11:25 amPDX Portland-OPO Porto

14h 05m1 stop Amsterdam Schiphol

5:00 am - 12:20 pmOPO Porto-PDX Portland

14h 20m1 stop Amsterdam Schiphol

$728KLM

Sun, Mar 14 - Wed, Mar 24

7:00 am - 9:55 pmPDX Portland-OPO Porto

31h 55m2 stops New York John F Kennedy Intl Paris Charles de Gaulle

11:15 am - 12:20 pmOPO Porto-PDX Portland

32h 05m1 stop Amsterdam Schiphol

$728Delta

Sun, Mar 14 - Tue, Mar 23

7:00 am - 9:55 pmPDX Portland-OPO Porto

31h 55m2 stops New York John F Kennedy Intl Paris Charles de Gaulle

5:00 am - 12:20 pmOPO Porto-PDX Portland

14h 20m1 stop Amsterdam Schiphol

$728Delta

Sun, Mar 14 - Wed, Mar 24

6:30 am - 9:30 amPDX Portland-OPO Porto

20h 00m2 stops Chicago O'Hare Intl Newark

6:00 am - 10:21 pmOPO Porto-PDX Portland

23h 21m2 stops Frankfurt am Main Newark

$737United Airlines

Mon, Mar 15 - Tue, Mar 23

11:47 pm - 9:30 amPDX Portland-OPO Porto

25h 43m2 stops Chicago O'Hare Intl Newark

12:35 pm - 10:13 amOPO Porto-PDX Portland

28h 38m2 stops Frankfurt am Main San Francisco

$737United Airlines

Sat, Mar 13 - Tue, Mar 23

Cheap last minute flights

Enter your travel dates to find the best prices.

2:34 pm - 11:30 pmPDX Portland-LIS Lisbon Humberto Delgado

24h 56m2 stops Chicago O'Hare Intl Munich Franz Josef Strauss

6:05 am - 6:31 pmLIS Lisbon Humberto Delgado-PDX Portland

20h 26m2 stops Munich Franz Josef Strauss Vancouver Intl

$834Lufthansa

Tue, Nov 10 - Tue, Nov 17

10:00 am - 11:30 pmPDX Portland-LIS Lisbon Humberto Delgado

29h 30m2 stops Vancouver Intl Munich Franz Josef Strauss

5:00 am - 6:20 pmLIS Lisbon Humberto Delgado-PDX Portland

21h 20m2 stops Frankfurt am Main San Francisco

$837Lufthansa

Tue, Nov 10 - Wed, Nov 18

7:10 am - 8:00 amPDX Portland-LIS Lisbon Humberto Delgado

16h 50m1 stop New York John F Kennedy Intl

5:00 am - 11:40 amLIS Lisbon Humberto Delgado-PDX Portland

14h 40m1 stop Amsterdam Schiphol

$839Delta

Tue, Nov 10 - Wed, Nov 18

7:10 am - 8:00 amPDX Portland-LIS Lisbon Humberto Delgado

16h 50m1 stop New York John F Kennedy Intl

11:30 am - 11:40 amLIS Lisbon Humberto Delgado-PDX Portland

32h 10m1 stop Amsterdam Schiphol

$839Delta

Wed, Nov 11 - Tue, Nov 17

5:45 pm - 5:45 pmPDX Portland-LIS Lisbon Humberto Delgado

16h 00m1 stop London Heathrow

6:35 pm - 5:48 pmLIS Lisbon Humberto Delgado-PDX Portland

31h 13m2 stops London Heathrow Dallas/Fort Worth

$882British Airways

Wed, Nov 11 - Mon, Nov 16

5:45 pm - 9:55 pmPDX Portland-LIS Lisbon Humberto Delgado

20h 10m1 stop London Heathrow

6:35 pm - 7:32 pmLIS Lisbon Humberto Delgado-PDX Portland

32h 57m2 stops London Heathrow Dallas/Fort Worth

$883British Airways

Wed, Nov 11 - Mon, Nov 16

7:10 am - 8:00 amPDX Portland-LIS Lisbon Humberto Delgado

16h 50m1 stop New York John F Kennedy Intl

5:00 am - 11:20 amLIS Lisbon Humberto Delgado-PDX Portland

14h 20m1 stop Amsterdam Schiphol

$889KLM

Wed, Nov 11 - Mon, Nov 16

8:30 am - 10:20 amPDX Portland-LIS Lisbon Humberto Delgado

17h 50m1 stop Washington, D.C. Dulles Intl

11:20 am - 7:12 pmLIS Lisbon Humberto Delgado-PDX Portland

39h 52m2 stops Toronto Pearson Intl Chicago O'Hare Intl

$894United Airlines

Wed, Nov 11 - Sat, Nov 21

10:47 am - 10:20 amPDX Portland-LIS Lisbon Humberto Delgado

15h 33m2 stops Chicago O'Hare Intl Washington, D.C. Dulles Intl

12:20 pm - 10:27 pmLIS Lisbon Humberto Delgado-PDX Portland

18h 07m2 stops Washington, D.C. Dulles Intl Chicago O'Hare Intl

$914United Airlines

Wed, Nov 11 - Sun, Nov 15

7:10 pm - 8:40 amPDX Portland-LIS Lisbon Humberto Delgado

29h 30m2 stops Vancouver Intl Montreal Pierre Elliott Trudeau Intl

5:00 am - 6:31 pmLIS Lisbon Humberto Delgado-PDX Portland

21h 31m2 stops Frankfurt am Main Vancouver Intl

$934Air Canada

Fri, Nov 13 - Sat, Nov 21

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Air Canada flights from Portland to Portugal

Our best Air Canada deals on Portland to Portugal flight tickets

Air Canada

Apr 7

PDX6:55 amPortland

18h 25m

2 stops

LIS9:20 amLisbon Humberto Delgado

Apr 21

LIS7:25 amLisbon Humberto Delgado

21h 20m

2 stops

PDX8:45 pmPortland

$757

Air Canada

Feb 14

PDX7:10 pmPortland

31h 30m

2 stops

LIS10:40 amLisbon Humberto Delgado

Feb 18

LIS5:00 amLisbon Humberto Delgado

23h 46m

2 stops

PDX8:46 pmPortland

$758

Air Canada

Feb 7

PDX10:00 amPortland

39h 20m

2 stops

LIS9:20 amLisbon Humberto Delgado

Mar 10

LIS5:00 amLisbon Humberto Delgado

17h 40m

2 stops

PDX2:40 pmPortland

$759

British Airways flights from Portland to Portugal

Our best British Airways deals on Portland to Portugal flight tickets

British Airways

Dec 9

PDX5:45 pmPortland

20h 10m

1 stop

LIS9:55 pmLisbon Humberto Delgado

Dec 22

LIS11:05 amLisbon Humberto Delgado

19h 08m

1 stop

PDX10:13 pmPortland

$790

British Airways

Dec 9

PDX5:45 pmPortland

16h 00m

1 stop

LIS5:45 pmLisbon Humberto Delgado

Dec 22

LIS11:05 amLisbon Humberto Delgado

19h 08m

1 stop

PDX10:13 pmPortland

$791

British Airways

Dec 9

PDX2:32 pmPortland

19h 13m

2 stops

LIS5:45 pmLisbon Humberto Delgado

Dec 22

LIS11:05 amLisbon Humberto Delgado

19h 08m

1 stop

PDX10:13 pmPortland

$807

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

PortlandLisbon

PDX Portland - LIS Lisbon Humberto Delgado

PDXLIS

Portland

Wed 2/3

2:45 pm-12:50 pm

1 stop14h 05m

Lisbon Humberto Delgado

Tue 2/16

11:35 am-5:00 pm

1 stop13h 25m

$599

PortlandLisbon

PDX Portland - LIS Lisbon Humberto Delgado

PDXLIS

Portland

Mon 12/7

2:45 pm-12:45 pm

1 stop14h 00m

Lisbon Humberto Delgado

Sun 12/13

2:00 pm-5:00 pm

1 stop35h 00m

$628

PortlandLisbon

PDX Portland - LIS Lisbon Humberto Delgado

PDXLIS

Portland

Fri 12/4

7:00 am-6:10 pm

3 stops27h 10m

Lisbon Humberto Delgado

Sun 12/6

6:45 pm-6:31 pm

3 stops31h 46m

$698

PortlandPorto

PDX Portland - OPO Porto

PDXOPO

Portland

Tue 3/23

10:00 am-11:45 am

2 stops18h 45m

Porto

Fri 4/2

6:00 am-8:45 pm

2 stops22h 45m

$706

PortlandPorto

PDX Portland - OPO Porto

PDXOPO

Portland

Tue 4/13

12:45 pm-10:55 am

1 stop14h 10m

Porto

Fri 4/23

5:00 am-10:50 am

1 stop13h 50m

$725

PortlandPorto

PDX Portland - OPO Porto

PDXOPO

Portland

Sun 3/14

2:20 pm-11:25 am

1 stop14h 05m

Porto

Wed 3/24

5:00 am-12:20 pm

1 stop14h 20m

$728

PortlandPorto

PDX Portland - OPO Porto

PDXOPO

Portland

Sun 3/14

7:00 am-9:55 pm

2 stops31h 55m

Porto

Tue 3/23

11:15 am-12:20 pm

1 stop32h 05m

$728

PortlandPorto

PDX Portland - OPO Porto

PDXOPO

Portland

Sun 3/14

7:00 am-9:55 pm

2 stops31h 55m

Porto

Wed 3/24

5:00 am-12:20 pm

1 stop14h 20m

$728

PortlandPorto

PDX Portland - OPO Porto

PDXOPO

Portland

Mon 3/15

6:30 am-9:30 am

2 stops20h 00m

Porto

Tue 3/23

6:00 am-10:21 pm

2 stops23h 21m

$737

PortlandPorto

PDX Portland - OPO Porto

PDXOPO

Portland

Sat 3/13

11:47 pm-9:30 am

2 stops25h 43m

Porto

Tue 3/23

12:35 pm-10:13 am

2 stops28h 38m

$737

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 $620, 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 January instead. Flights to Portugal in January, while not as cheap as those in February, still average around $666.

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 $912 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 $783 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

Best Price Found	$306
Fastest flight time	15h 20m
Direct flights	None

The best one-way flight to Portugal from Portland in the past 72 hours is $306. The best round-trip flight deal from Portland to Portugal found on momondo in the last 72 hours is $599.

The fastest flight from Portland to Portugal takes 15h 20m

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 November 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 7.5 698 reviews	Search Virgin Atlantic flights
Icelandair	PriceFrom $360	Free Cancellation	Rating 6.9 767 reviews	Search Icelandair flights
KLM	PriceFrom $492	Free Cancellation	Rating 7.8 1,595 reviews	Search KLM flights
Delta	PriceFrom $494	Free Cancellation	Rating 7.8 8,700 reviews	Search Delta flights
Lufthansa	PriceFrom $501	Free Cancellation	Rating 6.8 8,292 reviews	Search Lufthansa flights
United Airlines	PriceFrom $502	Free Cancellation	Rating 7.3 10,477 reviews	Search United Airlines flights
British Airways	PriceFrom $508	Free Cancellation	Rating 6.7 8,287 reviews	Search British Airways flights
Air Canada	PriceFrom $576	Free Cancellation	Rating 7.1 11,879 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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Find better results for your trip to Portugal

Popular cities

Other flights from Portland

Other flights to Portugal

Airlines

Cabin classes

Complete your trip

Feeling lucky

Popular cities in Portugal

Flights to Lisbonfrom $358

Flights to Portofrom $399

Flights to Funchalfrom $594

Flights to Farofrom $577

Flights to Ponta Delgadafrom $401

Flights to Lajesfrom $312

Flights to Hortafrom $585

Flights to Pico Islandfrom $585

Flights to Porto Santofrom $931

Flights to Velasfrom $588

Cheap flights from Portland to Portugal from $306

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 1/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Find the cheapest flights from Portland to Portugal

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

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Price Alerts

Air Canada flights from Portland to Portugal

Our best Air Canada deals on Portland to Portugal flight tickets

British Airways flights from Portland to Portugal

Our best British Airways 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

Best Price Found

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