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

British Airways, United Airlines, and Icelandair 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 36% 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 October 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.

$318 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

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

35h 00m1 stop Reykjavik Keflavik Intl

$605Icelandair

Mon, Dec 7 - Tue, Dec 15

2:45 pm - 12:50 pmPDX Portland-LIS Lisbon Humberto Delgado

14h 05m1 stop Reykjavik Keflavik Intl

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

35h 00m1 stop Reykjavik Keflavik Intl

$606Icelandair

Mon, Dec 7 - Thu, Dec 17

10:00 am - 9:20 amPDX Portland-LIS Lisbon Humberto Delgado

15h 20m2 stops Vancouver Intl Toronto Pearson Intl

5:00 am - 8:46 pmLIS Lisbon Humberto Delgado-PDX Portland

23h 46m2 stops Frankfurt am Main Vancouver Intl

$720Multiple Airlines

Tue, Dec 1 - Thu, Dec 10

10:00 am - 9:20 amPDX Portland-LIS Lisbon Humberto Delgado

15h 20m2 stops Vancouver Intl Toronto Pearson Intl

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

21h 31m2 stops Frankfurt am Main Vancouver Intl

$720Multiple Airlines

Tue, Dec 1 - Wed, Dec 9

7:00 am - 10:40 amPDX Portland-LIS Lisbon Humberto Delgado

19h 40m2 stops Vancouver Intl Montreal Pierre Elliott Trudeau Intl

12:50 pm - 6:43 pmLIS Lisbon Humberto Delgado-PDX Portland

37h 53m2 stops Montreal Pierre Elliott Trudeau Intl Chicago O'Hare Intl

$724Air Canada

Mon, Dec 7 - Tue, Dec 15

7:00 am - 10:40 amPDX Portland-LIS Lisbon Humberto Delgado

43h 40m2 stops Vancouver Intl Montreal Pierre Elliott Trudeau Intl

12:50 pm - 6:43 pmLIS Lisbon Humberto Delgado-PDX Portland

37h 53m2 stops Montreal Pierre Elliott Trudeau Intl Chicago O'Hare Intl

$724Air Canada

Sun, Dec 6 - Tue, Dec 15

10:00 am - 9:20 amPDX Portland-LIS Lisbon Humberto Delgado

15h 20m2 stops Vancouver Intl Toronto Pearson Intl

5:00 am - 6:43 pmLIS Lisbon Humberto Delgado-PDX Portland

21h 43m2 stops Frankfurt am Main Chicago O'Hare Intl

$724Lufthansa

Mon, Dec 7 - Tue, Dec 15

10:00 am - 9:20 amPDX Portland-LIS Lisbon Humberto Delgado

15h 20m2 stops Vancouver Intl Toronto Pearson Intl

5:00 am - 6:23 pmLIS Lisbon Humberto Delgado-PDX Portland

21h 23m2 stops Frankfurt am Main San Francisco

$724Lufthansa

Tue, Dec 1 - Tue, Dec 8

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

$725KLM

Wed, Dec 2 - Wed, Dec 9

1:20 pm - 7:00 pmPDX Portland-LIS Lisbon Humberto Delgado

21h 40m1 stop Amsterdam Schiphol

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

14h 20m1 stop Amsterdam Schiphol

$754KLM

Sun, Feb 28 - Wed, Mar 10

Cheap last minute flights

Enter your travel dates to find the best prices.

3:30 pm - 9:20 amPDX Portland-LIS Lisbon Humberto Delgado

33h 50m2 stops Vancouver Intl Montreal Pierre Elliott Trudeau Intl

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

21h 20m2 stops Frankfurt am Main San Francisco

$821Lufthansa

Tue, Oct 20 - Tue, Nov 10

7:00 am - 11:30 pmPDX Portland-LIS Lisbon Humberto Delgado

33h 30m2 stops Chicago O'Hare Intl Munich Franz Josef Strauss

6:05 am - 6:09 pmLIS Lisbon Humberto Delgado-PDX Portland

20h 04m2 stops Munich Franz Josef Strauss Denver Intl

$831Lufthansa

Sun, Oct 25 - Tue, Nov 3

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

18h 00m1 stop New York John F Kennedy Intl

5:00 am - 8:00 pmLIS Lisbon Humberto Delgado-PDX Portland

23h 00m2 stops Amsterdam Schiphol Seattle/Tacoma Intl

$838Delta

Sun, Oct 25 - Tue, Nov 3

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

17h 00m1 stop New York John F Kennedy Intl

5:00 am - 10:10 pmLIS Lisbon Humberto Delgado-PDX Portland

25h 10m2 stops Amsterdam Schiphol Detroit Metropolitan Wayne County

$838Delta

Tue, Oct 20 - Tue, Nov 10

3:15 pm - 10:10 amPDX Portland-LIS Lisbon Humberto Delgado

35h 55m2 stops Vancouver Intl Montreal Pierre Elliott Trudeau Intl

12:35 pm - 9:02 pmLIS Lisbon Humberto Delgado-PDX Portland

40h 27m2 stops Zurich San Francisco

$841Multiple Airlines

Sun, Oct 25 - Tue, Nov 3

7:30 pm - 11:00 pmPDX Portland-LIS Lisbon Humberto Delgado

19h 30m1 stop London Heathrow

11:05 am - 9:59 pmLIS Lisbon Humberto Delgado-PDX Portland

18h 54m1 stop Philadelphia

$842British Airways

Tue, Oct 20 - Tue, Nov 10

7:30 pm - 11:00 pmPDX Portland-LIS Lisbon Humberto Delgado

19h 30m1 stop London Heathrow

11:05 am - 9:59 pmLIS Lisbon Humberto Delgado-PDX Portland

18h 54m1 stop Philadelphia

$842American Airlines

Tue, Oct 20 - Tue, Nov 10

6:45 pm - 5:45 pmPDX Portland-LIS Lisbon Humberto Delgado

16h 00m1 stop London Heathrow

11:05 am - 9:59 pmLIS Lisbon Humberto Delgado-PDX Portland

18h 54m1 stop Philadelphia

$847British Airways

Sun, Oct 25 - Tue, Nov 3

7:00 am - 10:30 amPDX Portland-OPO Porto

19h 30m1 stop New York John F Kennedy Intl

5:00 am - 11:20 amOPO Porto-PDX Portland

14h 20m1 stop Amsterdam Schiphol

$921KLM

Fri, Oct 23 - Mon, Nov 2

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

17h 00m1 stop New York John F Kennedy Intl

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

14h 20m1 stop Amsterdam Schiphol

$929KLM

Fri, Oct 23 - Mon, Nov 2

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Lufthansa flights from Portland to Portugal

Our best Lufthansa deals on Portland to Portugal flight tickets

Lufthansa

Dec 7

PDX10:00 amPortland

15h 20m

2 stops

LIS9:20 amLisbon Humberto Delgado

Dec 15

LIS5:00 amLisbon Humberto Delgado

21h 43m

2 stops

PDX6:43 pmPortland

$724

Lufthansa

Mar 2

PDX8:45 amPortland

20h 05m

2 stops

OPO12:50 pmPorto

Mar 29

OPO6:20 amPorto

43h 45m

2 stops

PDX6:05 pmPortland

$747

Lufthansa

Feb 28

PDX7:30 amPortland

30h 55m

2 stops

OPO10:25 pmPorto

Mar 29

OPO6:20 amPorto

43h 45m

2 stops

PDX6:05 pmPortland

$759

KLM flights from Portland to Portugal

Our best KLM deals on Portland to Portugal flight tickets

KLM

Dec 2

PDX7:10 amPortland

16h 50m

1 stop

LIS8:00 amLisbon Humberto Delgado

Dec 9

LIS5:00 amLisbon Humberto Delgado

14h 40m

1 stop

PDX11:40 amPortland

$725

KLM

Oct 28

PDX7:00 amPortland

18h 00m

1 stop

LIS8:00 amLisbon Humberto Delgado

Nov 6

LIS5:00 amLisbon Humberto Delgado

14h 20m

1 stop

PDX11:20 amPortland

$829

KLM

Nov 2

PDX7:00 amPortland

17h 00m

1 stop

LIS8:00 amLisbon Humberto Delgado

Nov 16

LIS5:00 amLisbon Humberto Delgado

14h 20m

1 stop

PDX11:20 amPortland

$879

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandLisbon

PDX Portland - LIS Lisbon Humberto Delgado

PDXLIS

Portland

Mon 12/7

2:45 pm-12:50 pm

1 stop14h 05m

Lisbon Humberto Delgado

Tue 12/15

2:00 pm-5:00 pm

1 stop35h 00m

$605

PortlandLisbon

PDX Portland - LIS Lisbon Humberto Delgado

PDXLIS

Portland

Mon 12/7

2:45 pm-12:50 pm

1 stop14h 05m

Lisbon Humberto Delgado

Thu 12/17

2:00 pm-5:00 pm

1 stop35h 00m

$606

PortlandLisbon

PDX Portland - LIS Lisbon Humberto Delgado

PDXLIS

Portland

Tue 12/1

10:00 am-9:20 am

2 stops15h 20m

Lisbon Humberto Delgado

Thu 12/10

5:00 am-8:46 pm

2 stops23h 46m

$720

PortlandLisbon

PDX Portland - LIS Lisbon Humberto Delgado

PDXLIS

Portland

Tue 12/1

10:00 am-9:20 am

2 stops15h 20m

Lisbon Humberto Delgado

Wed 12/9

5:00 am-6:31 pm

2 stops21h 31m

$720

PortlandLisbon

PDX Portland - LIS Lisbon Humberto Delgado

PDXLIS

Portland

Mon 12/7

7:00 am-10:40 am

2 stops19h 40m

Lisbon Humberto Delgado

Tue 12/15

12:50 pm-6:43 pm

2 stops37h 53m

$724

PortlandLisbon

PDX Portland - LIS Lisbon Humberto Delgado

PDXLIS

Portland

Sun 12/6

7:00 am-10:40 am

2 stops43h 40m

Lisbon Humberto Delgado

Tue 12/15

12:50 pm-6:43 pm

2 stops37h 53m

$724

PortlandLisbon

PDX Portland - LIS Lisbon Humberto Delgado

PDXLIS

Portland

Mon 12/7

10:00 am-9:20 am

2 stops15h 20m

Lisbon Humberto Delgado

Tue 12/15

5:00 am-6:43 pm

2 stops21h 43m

$724

PortlandLisbon

PDX Portland - LIS Lisbon Humberto Delgado

PDXLIS

Portland

Tue 12/1

10:00 am-9:20 am

2 stops15h 20m

Lisbon Humberto Delgado

Tue 12/8

5:00 am-6:23 pm

2 stops21h 23m

$724

Quickest round-trip

PortlandLisbon

PDX Portland - LIS Lisbon Humberto Delgado

PDXLIS

Portland

Wed 12/2

7:10 am-8:00 am

1 stop16h 50m

Lisbon Humberto Delgado

Wed 12/9

5:00 am-11:40 am

1 stop14h 40m

$725

PortlandLisbon

PDX Portland - LIS Lisbon Humberto Delgado

PDXLIS

Portland

Sun 2/28

1:20 pm-7:00 pm

1 stop21h 40m

Lisbon Humberto Delgado

Wed 3/10

5:00 am-11:20 am

1 stop14h 20m

$754

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 December. Flight prices, which tend to average around $589, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of December, then book flights to Portugal from Portland during February instead. Flights to Portugal in February, while not as cheap as those in December, still average around $620.

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 $890 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 12% 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	$318
Fastest flight time	14h 05m
Direct flights	None

The best one-way flight to Portugal from Portland in the past 72 hours is $318. The best round-trip flight deal from Portland to Portugal found on momondo in the last 72 hours is $605.

The fastest flight from Portland to Portugal takes 14h 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 October 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 7.5 696 reviews	Search Virgin Atlantic flights
Icelandair	PriceFrom $360	Free Cancellation	Rating 6.9 763 reviews	Search Icelandair flights
KLM	PriceFrom $492	Free Cancellation	Rating 7.8 1,591 reviews	Search KLM flights
Delta	PriceFrom $492	Free Cancellation	Rating 7.8 8,650 reviews	Search Delta flights
Lufthansa	PriceFrom $501	Free Cancellation	Rating 6.8 8,279 reviews	Search Lufthansa flights
United Airlines	PriceFrom $502	Free Cancellation	Rating 7.3 10,390 reviews	Search United Airlines flights
British Airways	PriceFrom $508	Free Cancellation	Rating 6.7 8,266 reviews	Search British Airways flights
Air Canada	PriceFrom $576	Free Cancellation	Rating 7.1 11,784 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 $405

Flights to Portofrom $396

Flights to Funchalfrom $405

Flights to Farofrom $570

Flights to Ponta Delgadafrom $553

Flights to Lajesfrom $554

Flights to Hortafrom $550

Flights to Pico Islandfrom $557

Flights to Porto Santofrom $1,072

Flights to Velasfrom $557

Cheap flights from Portland to Portugal from $318

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 2/24. 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

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Lufthansa flights from Portland to Portugal

Our best Lufthansa deals on Portland to Portugal flight tickets

KLM flights from Portland to Portugal

Our best KLM 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