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.

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

KLM, United Airlines, and Delta are the most popular carriers operating 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.

$312 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 - 12:45 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

$580Icelandair

Mon, Dec 7 - Thu, Dec 17

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

$610Icelandair

Wed, Feb 3 - Tue, Feb 16

2:45 pm - 8:30 amPDX Portland-LIS Lisbon Humberto Delgado

33h 45m3 stops Reykjavik Keflavik Intl Stockholm Arlanda Barcelona-El Prat

2:55 pm - 5:00 pmLIS Lisbon Humberto Delgado-PDX Portland

34h 05m3 stops Warsaw Frederic Chopin Stockholm Arlanda Reykjavik Keflavik Intl

$704Multiple Airlines

Wed, Feb 17 - Wed, Feb 24

5:14 pm - 11:25 pmPDX Portland-OPO Porto

22h 11m2 stops San Francisco Munich Franz Josef Strauss

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

22h 45m2 stops Frankfurt am Main Vancouver Intl

$708Multiple Airlines

Tue, Apr 13 - Fri, Apr 23

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

19h 30m1 stop New York John F Kennedy Intl

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

13h 50m1 stop Amsterdam Schiphol

$725KLM

Tue, Apr 13 - Fri, Apr 23

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

19h 30m1 stop New York John F Kennedy Intl

5:00 am - 11:10 amOPO Porto-PDX Portland

14h 10m1 stop Amsterdam Schiphol

$725Delta

Tue, Apr 13 - Fri, Apr 23

1:20 pm - 10:30 pmPDX Portland-OPO Porto

25h 10m1 stop Amsterdam Schiphol

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

14h 20m1 stop Amsterdam Schiphol

$728Delta

Sun, Feb 21 - Fri, Feb 26

12:59 pm - 9:30 amPDX Portland-OPO Porto

36h 31m2 stops Houston George Bush Intcntl Newark

6:00 am - 10:16 pmOPO Porto-PDX Portland

24h 16m2 stops Frankfurt am Main Newark

$733United Airlines

Sat, Feb 20 - Fri, Feb 26

12:59 pm - 9:30 amPDX Portland-OPO Porto

36h 31m2 stops Houston George Bush Intcntl Newark

6:00 am - 10:16 pmOPO Porto-PDX Portland

24h 16m2 stops Frankfurt am Main Newark

$733United Airlines

Sat, Feb 20 - Thu, Feb 25

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

19h 30m1 stop New York John F Kennedy Intl

5:55 am - 3:08 pmOPO Porto-PDX Portland

17h 13m2 stops Paris Charles de Gaulle Seattle/Tacoma Intl

$742KLM

Tue, Apr 13 - Fri, Apr 23

Cheap last minute flights

Enter your travel dates to find the best prices.

7:00 am - 8:15 amPDX Portland-OPO Porto

17h 15m1 stop New York John F Kennedy Intl

11:15 am - 11:40 amOPO Porto-PDX Portland

32h 25m1 stop Amsterdam Schiphol

$826Delta

Sun, Nov 1 - Tue, Nov 17

11:00 pm - 10:35 amPDX Portland-OPO Porto

27h 35m2 stops Atlanta Hartsfield-Jackson Paris Charles de Gaulle

11:15 am - 11:40 amOPO Porto-PDX Portland

32h 25m1 stop Amsterdam Schiphol

$830Delta

Sun, Nov 1 - Tue, Nov 17

1:44 pm - 3:25 pmPDX Portland-OPO Porto

17h 41m2 stops Minneapolis St Paul Amsterdam Schiphol

5:00 am - 6:55 pmOPO Porto-PDX Portland

21h 55m2 stops Amsterdam Schiphol Seattle/Tacoma Intl

$839KLM

Sun, Nov 1 - Tue, Nov 17

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

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

5:00 am - 7:12 pmLIS Lisbon Humberto Delgado-PDX Portland

22h 12m2 stops Frankfurt am Main Chicago O'Hare Intl

$841Lufthansa

Tue, Nov 3 - Tue, Nov 17

8:30 am - 10:05 amPDX Portland-LIS Lisbon Humberto Delgado

17h 35m1 stop Washington, D.C. Dulles Intl

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

21h 20m2 stops Frankfurt am Main San Francisco

$847United Airlines

Tue, Nov 3 - Tue, Nov 17

7:15 pm - 9:20 amPDX Portland-LIS Lisbon Humberto Delgado

30h 05m2 stops Vancouver Intl Toronto Pearson Intl

10:55 am - 11:52 amLIS Lisbon Humberto Delgado-PDX Portland

32h 57m2 stops Toronto Pearson Intl Chicago O'Hare Intl

$848Air Canada

Mon, Nov 2 - Thu, Nov 12

7:00 am - 9:20 amPDX Portland-LIS Lisbon Humberto Delgado

18h 20m2 stops Vancouver Intl Toronto Pearson Intl

10:55 am - 11:52 amLIS Lisbon Humberto Delgado-PDX Portland

32h 57m2 stops Toronto Pearson Intl Chicago O'Hare Intl

$848Air Canada

Tue, Nov 3 - Thu, Nov 12

11:30 pm - 8:10 amPDX Portland-LIS Lisbon Humberto Delgado

24h 40m2 stops Chicago O'Hare Intl Newark

5:00 am - 10:57 pmLIS Lisbon Humberto Delgado-PDX Portland

25h 57m2 stops Frankfurt am Main San Francisco

$851United Airlines

Sun, Nov 1 - Wed, Nov 11

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

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

2:20 pm - 6:09 pmLIS Lisbon Humberto Delgado-PDX Portland

35h 49m2 stops Munich Franz Josef Strauss Denver Intl

$853Lufthansa

Mon, Nov 2 - Mon, Nov 16

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

17h 00m1 stop New York John F Kennedy Intl

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

20h 00m1 stop New York John F Kennedy Intl

$859KLM

Tue, Nov 3 - Tue, Nov 17

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Icelandair flights from Portland to Portugal

Our best Icelandair deals on Portland to Portugal flight tickets

Icelandair

Dec 7

PDX2:45 pmPortland

14h 00m

1 stop

LIS12:45 pmLisbon Humberto Delgado

Dec 17

LIS2:00 pmLisbon Humberto Delgado

35h 00m

1 stop

PDX5:00 pmPortland

$580

Icelandair

Feb 3

PDX2:45 pmPortland

14h 05m

1 stop

LIS12:50 pmLisbon Humberto Delgado

Feb 16

LIS11:35 amLisbon Humberto Delgado

13h 25m

1 stop

PDX5:00 pmPortland

$610

Icelandair

Dec 7

PDX2:45 pmPortland

14h 05m

1 stop

LIS12:50 pmLisbon Humberto Delgado

Dec 17

LIS2:00 pmLisbon Humberto Delgado

35h 00m

1 stop

PDX5:00 pmPortland

$648

British Airways flights from Portland to Portugal

Our best British Airways deals on Portland to Portugal flight tickets

British Airways

Feb 1

PDX2:06 pmPortland

20h 44m

2 stops

LIS6:50 pmLisbon Humberto Delgado

Feb 10

LIS7:05 amLisbon Humberto Delgado

16h 45m

1 stop

PDX3:50 pmPortland

$769

British Airways

Apr 14

PDX8:25 pmPortland

18h 50m

1 stop

LIS11:15 pmLisbon Humberto Delgado

Apr 21

LIS7:20 amLisbon Humberto Delgado

19h 15m

1 stop

PDX6:35 pmPortland

$776

British Airways

Apr 14

PDX8:25 pmPortland

18h 50m

1 stop

LIS11:15 pmLisbon Humberto Delgado

Apr 28

LIS4:25 pmLisbon Humberto Delgado

34h 10m

1 stop

PDX6:35 pmPortland

$788

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-12:45 pm

1 stop14h 00m

Lisbon Humberto Delgado

Thu 12/17

2:00 pm-5:00 pm

1 stop35h 00m

$580

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

$610

PortlandLisbon

PDX Portland - LIS Lisbon Humberto Delgado

PDXLIS

Portland

Wed 2/17

2:45 pm-8:30 am

3 stops33h 45m

Lisbon Humberto Delgado

Wed 2/24

2:55 pm-5:00 pm

3 stops34h 05m

$704

PortlandPorto

PDX Portland - OPO Porto

PDXOPO

Portland

Tue 4/13

5:14 pm-11:25 pm

2 stops22h 11m

Porto

Fri 4/23

6:00 am-8:45 pm

2 stops22h 45m

$708

PortlandPorto

PDX Portland - OPO Porto

PDXOPO

Portland

Tue 4/13

7:00 am-10:30 am

1 stop19h 30m

Porto

Fri 4/23

5:00 am-10:50 am

1 stop13h 50m

$725

PortlandPorto

PDX Portland - OPO Porto

PDXOPO

Portland

Tue 4/13

7:00 am-10:30 am

1 stop19h 30m

Porto

Fri 4/23

5:00 am-11:10 am

1 stop14h 10m

$725

PortlandPorto

PDX Portland - OPO Porto

PDXOPO

Portland

Sun 2/21

1:20 pm-10:30 pm

1 stop25h 10m

Porto

Fri 2/26

5:00 am-11:20 am

1 stop14h 20m

$728

PortlandPorto

PDX Portland - OPO Porto

PDXOPO

Portland

Sat 2/20

12:59 pm-9:30 am

2 stops36h 31m

Porto

Fri 2/26

6:00 am-10:16 pm

2 stops24h 16m

$733

PortlandPorto

PDX Portland - OPO Porto

PDXOPO

Portland

Sat 2/20

12:59 pm-9:30 am

2 stops36h 31m

Porto

Thu 2/25

6:00 am-10:16 pm

2 stops24h 16m

$733

PortlandPorto

PDX Portland - OPO Porto

PDXOPO

Portland

Tue 4/13

7:00 am-10:30 am

1 stop19h 30m

Porto

Fri 4/23

5:55 am-3:08 pm

2 stops17h 13m

$742

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 $597, 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 $894 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	$312
Fastest flight time	14h 00m
Direct flights	None

The best one-way flight to Portugal from Portland in the past 72 hours is $312. The best round-trip flight deal from Portland to Portugal found on momondo in the last 72 hours is $580.

The fastest flight from Portland to Portugal takes 14h 00m

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 7.5 699 reviews	Search Virgin Atlantic flights
Icelandair	PriceFrom $360	Free Cancellation	Rating 6.9 764 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 8,696 reviews	Search Delta flights
Lufthansa	PriceFrom $501	Free Cancellation	Rating 6.8 8,300 reviews	Search Lufthansa flights
United Airlines	PriceFrom $502	Free Cancellation	Rating 7.3 10,455 reviews	Search United Airlines flights
British Airways	PriceFrom $508	Free Cancellation	Rating 6.7 8,277 reviews	Search British Airways flights
Air Canada	PriceFrom $576	Free Cancellation	Rating 7.1 11,834 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 $364

Flights to Portofrom $408

Flights to Funchalfrom $406

Flights to Farofrom $568

Flights to Ponta Delgadafrom $438

Flights to Lajesfrom $310

Flights to Hortafrom $750

Flights to Pico Islandfrom $664

Flights to Porto Santofrom $888

Flights to Velasfrom $688

Cheap flights from Portland to Portugal from $312

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 1/25. 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

Trusted and free

Price Alerts

Price Alerts

Icelandair flights from Portland to Portugal

Our best Icelandair 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