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

United Airlines, KLM, and Virgin Atlantic 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 September 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.

$302 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

$544Icelandair

Wed, Jan 13 - Tue, Jan 26

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

$545Icelandair

Wed, Jan 13 - Tue, Jan 26

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

15h 20m2 stops Vancouver Intl Toronto Pearson Intl

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

20h 26m2 stops Munich Franz Josef Strauss Vancouver Intl

$585Multiple Airlines

Wed, Jan 13 - Tue, Jan 26

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

16h 00m1 stop London Heathrow

6:30 am - 10:15 pmLIS Lisbon Humberto Delgado-PDX Portland

23h 45m2 stops Madrid Barajas Dallas/Fort Worth

$590Multiple Airlines

Wed, Jan 13 - Tue, Jan 26

8:00 am - 9:05 amPDX Portland-LIS Lisbon Humberto Delgado

17h 05m1 stop Philadelphia

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

18h 54m1 stop Philadelphia

$597British Airways

Tue, Dec 1 - Wed, Dec 9

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

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

11:20 am - 2:41 pmLIS Lisbon Humberto Delgado-PDX Portland

35h 21m2 stops Toronto Pearson Intl Vancouver Intl

$597Lufthansa

Sun, Nov 8 - Wed, Nov 18

10:00 am - 6:55 amPDX Portland-LIS Lisbon Humberto Delgado

36h 55m2 stops Vancouver Intl Montreal Pierre Elliott Trudeau Intl

11:20 am - 2:41 pmLIS Lisbon Humberto Delgado-PDX Portland

35h 21m2 stops Toronto Pearson Intl Vancouver Intl

$597Lufthansa

Tue, Dec 1 - Wed, Dec 9

6:00 am - 4:50 pmPDX Portland-OPO Porto

26h 50m2 stops Dallas/Fort Worth London Heathrow

8:40 pm - 7:32 pmOPO Porto-PDX Portland

30h 52m2 stops Madrid Barajas Dallas/Fort Worth

$598British Airways

Wed, Nov 11 - Mon, Nov 16

11:00 pm - 10:30 amPDX Portland-OPO Porto

27h 30m2 stops Atlanta Hartsfield-Jackson New York LaGuardia

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

32h 25m1 stop Amsterdam Schiphol

$599Delta

Sun, Oct 18 - Tue, Nov 3

7:00 am - 10:25 amPDX Portland-OPO Porto

19h 25m1 stop New York John F Kennedy Intl

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

32h 25m1 stop Amsterdam Schiphol

$599Delta

Sun, Oct 18 - Tue, Nov 3

Cheap last minute flights

Enter your travel dates to find the best prices.

7:02 am - 6:30 pmPDX Portland-OPO Porto

27h 28m2 stops Chicago O'Hare Intl Zurich

7:20 pm - 10:23 pmOPO Porto-PDX Portland

35h 03m2 stops Zurich Chicago O'Hare Intl

$734SWISS

Sat, Sep 26 - Mon, Oct 5

7:30 pm - 3:45 pmPDX Portland-LIS Lisbon Humberto Delgado

36h 15m1 stop London Heathrow

4:30 pm - 7:41 pmLIS Lisbon Humberto Delgado-PDX Portland

35h 11m2 stops London Heathrow Chicago O'Hare Intl

$739British Airways

Sun, Sep 27 - Tue, Oct 6

7:30 pm - 11:05 pmPDX Portland-LIS Lisbon Humberto Delgado

19h 35m1 stop London Heathrow

7:10 am - 11:59 pmLIS Lisbon Humberto Delgado-PDX Portland

24h 49m2 stops London Heathrow Chicago O'Hare Intl

$739British Airways

Sun, Sep 27 - Tue, Oct 6

10:58 am - 9:45 amPDX Portland-OPO Porto

14h 47m1 stop Newark

7:20 pm - 10:23 pmOPO Porto-PDX Portland

35h 03m2 stops Zurich Chicago O'Hare Intl

$740SWISS

Sat, Sep 26 - Mon, Oct 5

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

27h 00m2 stops Chicago O'Hare Intl Washington, D.C. Dulles Intl

11:25 am - 6:53 pmLIS Lisbon Humberto Delgado-PDX Portland

39h 28m2 stops Montreal Pierre Elliott Trudeau Intl Chicago O'Hare Intl

$744United Airlines

Sun, Sep 27 - Tue, Oct 6

11:30 pm - 8:20 amPDX Portland-LIS Lisbon Humberto Delgado

24h 50m2 stops Chicago O'Hare Intl Newark

11:25 am - 6:53 pmLIS Lisbon Humberto Delgado-PDX Portland

39h 28m2 stops Montreal Pierre Elliott Trudeau Intl Chicago O'Hare Intl

$744United Airlines

Sun, Sep 27 - Tue, Oct 6

1:05 pm - 10:55 amPDX Portland-OPO Porto

13h 50m1 stop Amsterdam Schiphol

7:55 pm - 11:10 amOPO Porto-PDX Portland

23h 15m1 stop Amsterdam Schiphol

$750KLM

Sat, Sep 26 - Mon, Oct 5

2:27 pm - 10:20 amPDX Portland-OPO Porto

35h 53m2 stops Chicago O'Hare Intl Munich Franz Josef Strauss

6:00 am - 8:10 pmOPO Porto-PDX Portland

22h 10m2 stops Frankfurt am Main Washington, D.C. Dulles Intl

$752Lufthansa

Sat, Sep 26 - Fri, Oct 16

1:05 pm - 6:45 pmPDX Portland-LIS Lisbon Humberto Delgado

21h 40m1 stop Amsterdam Schiphol

7:45 pm - 11:10 amLIS Lisbon Humberto Delgado-PDX Portland

23h 25m1 stop Amsterdam Schiphol

$815KLM

Fri, Sep 25 - Mon, Oct 5

10:33 pm - 8:20 amPDX Portland-LIS Lisbon Humberto Delgado

25h 47m1 stop Newark

5:05 am - 7:11 pmLIS Lisbon Humberto Delgado-PDX Portland

22h 06m2 stops Frankfurt am Main Vancouver Intl

$874Lufthansa

Sat, Sep 26 - Sat, Oct 10

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Icelandair flights from Portland to Portugal

Our best Icelandair deals on Portland to Portugal flight tickets

Icelandair

Jan 13

PDX2:45 pmPortland

14h 05m

1 stop

LIS12:50 pmLisbon Humberto Delgado

Jan 26

LIS11:35 amLisbon Humberto Delgado

13h 25m

1 stop

PDX5:00 pmPortland

$544

Icelandair

Jan 13

PDX2:45 pmPortland

14h 05m

1 stop

LIS12:50 pmLisbon Humberto Delgado

Jan 26

LIS11:35 amLisbon Humberto Delgado

13h 25m

1 stop

PDX5:00 pmPortland

$545

Icelandair

Nov 2

PDX2:45 pmPortland

14h 05m

1 stop

LIS12:50 pmLisbon Humberto Delgado

Nov 17

LIS2:00 pmLisbon Humberto Delgado

35h 00m

1 stop

PDX5:00 pmPortland

$547

Air Canada flights from Portland to Portugal

Our best Air Canada deals on Portland to Portugal flight tickets

Air Canada

Nov 10

PDX7:10 pmPortland

27h 45m

2 stops

LIS6:55 amLisbon Humberto Delgado

Nov 18

LIS11:20 amLisbon Humberto Delgado

39h 52m

2 stops

PDX7:12 pmPortland

$599

Air Canada

Jan 12

PDX10:00 amPortland

15h 20m

2 stops

LIS9:20 amLisbon Humberto Delgado

Jan 26

LIS11:20 amLisbon Humberto Delgado

39h 19m

2 stops

PDX6:39 pmPortland

$604

Air Canada

Jan 12

PDX7:00 amPortland

18h 20m

2 stops

LIS9:20 amLisbon Humberto Delgado

Jan 27

LIS5:00 amLisbon Humberto Delgado

17h 41m

2 stops

PDX2:41 pmPortland

$628

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

PortlandLisbon

PDX Portland - LIS Lisbon Humberto Delgado

PDXLIS

Portland

Wed 1/13

2:45 pm-12:50 pm

1 stop14h 05m

Lisbon Humberto Delgado

Tue 1/26

11:35 am-5:00 pm

1 stop13h 25m

$544

PortlandLisbon

PDX Portland - LIS Lisbon Humberto Delgado

PDXLIS

Portland

Wed 1/13

2:45 pm-12:50 pm

1 stop14h 05m

Lisbon Humberto Delgado

Tue 1/26

11:35 am-5:00 pm

1 stop13h 25m

$545

PortlandLisbon

PDX Portland - LIS Lisbon Humberto Delgado

PDXLIS

Portland

Wed 1/13

10:00 am-9:20 am

2 stops15h 20m

Lisbon Humberto Delgado

Tue 1/26

6:05 am-6:31 pm

2 stops20h 26m

$585

PortlandLisbon

PDX Portland - LIS Lisbon Humberto Delgado

PDXLIS

Portland

Wed 1/13

5:45 pm-5:45 pm

1 stop16h 00m

Lisbon Humberto Delgado

Tue 1/26

6:30 am-10:15 pm

2 stops23h 45m

$590

PortlandLisbon

PDX Portland - LIS Lisbon Humberto Delgado

PDXLIS

Portland

Tue 12/1

8:00 am-9:05 am

1 stop17h 05m

Lisbon Humberto Delgado

Wed 12/9

11:05 am-9:59 pm

1 stop18h 54m

$597

PortlandLisbon

PDX Portland - LIS Lisbon Humberto Delgado

PDXLIS

Portland

Sun 11/8

10:00 am-10:40 am

2 stops40h 40m

Lisbon Humberto Delgado

Wed 11/18

11:20 am-2:41 pm

2 stops35h 21m

$597

PortlandLisbon

PDX Portland - LIS Lisbon Humberto Delgado

PDXLIS

Portland

Tue 12/1

10:00 am-6:55 am

2 stops36h 55m

Lisbon Humberto Delgado

Wed 12/9

11:20 am-2:41 pm

2 stops35h 21m

$597

PortlandPorto

PDX Portland - OPO Porto

PDXOPO

Portland

Wed 11/11

6:00 am-4:50 pm

2 stops26h 50m

Porto

Mon 11/16

8:40 pm-7:32 pm

2 stops30h 52m

$598

PortlandPorto

PDX Portland - OPO Porto

PDXOPO

Portland

Sun 10/18

11:00 pm-10:30 am

2 stops27h 30m

Porto

Tue 11/3

11:15 am-11:40 am

1 stop32h 25m

$599

PortlandPorto

PDX Portland - OPO Porto

PDXOPO

Portland

Sun 10/18

7:00 am-10:25 am

1 stop19h 25m

Porto

Tue 11/3

11:15 am-11:40 am

1 stop32h 25m

$599

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 $612, 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 December instead. Flights to Portugal in December, while not as cheap as those in February, still average around $639.

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 $876 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 11% 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	$302
Fastest flight time	13h 22m
Direct flights	None

The best one-way flight to Portugal from Portland in the past 72 hours is $302. The best round-trip flight deal from Portland to Portugal found on momondo in the last 72 hours is $544.

The fastest flight from Portland to Portugal takes 13h 22m

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 September 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 7.4 694 reviews	Search Virgin Atlantic flights
Icelandair	PriceFrom $360	Free Cancellation	Rating 6.9 747 reviews	Search Icelandair flights
KLM	PriceFrom $492	Free Cancellation	Rating 7.8 1,575 reviews	Search KLM flights
Delta	PriceFrom $492	Free Cancellation	Rating 7.8 8,591 reviews	Search Delta flights
Lufthansa	PriceFrom $501	Free Cancellation	Rating 6.8 8,237 reviews	Search Lufthansa flights
United Airlines	PriceFrom $502	Free Cancellation	Rating 7.4 10,226 reviews	Search United Airlines flights
British Airways	PriceFrom $508	Free Cancellation	Rating 6.7 8,225 reviews	Search British Airways flights
Air Canada	PriceFrom $576	Free Cancellation	Rating 7.1 11,657 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

Airlines

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Complete your trip

Feeling lucky

Popular cities in Portugal

Flights to Lisbonfrom $309

Flights to Portofrom $470

Flights to Funchalfrom $485

Flights to Farofrom $463

Flights to Ponta Delgadafrom $561

Flights to Lajesfrom $568

Flights to Hortafrom $629

Flights to Pico Islandfrom $592

Flights to Porto Santofrom $999

Flights to Velasfrom $590

Cheap flights from Portland to Portugal from $302

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 11/3. 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

Icelandair flights from Portland to Portugal

Our best Icelandair deals on Portland to Portugal flight tickets

Air Canada flights from Portland to Portugal

Our best Air Canada 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