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

British Airways, United Airlines, 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 38% 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 August 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.

$280 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.

5:45 pm - 8:00 pmPDX Portland-OPO Porto

18h 15m2 stops London Heathrow Madrid Barajas

8:40 pm - 1:46 pmOPO Porto-PDX Portland

25h 06m2 stops Madrid Barajas Dallas/Fort Worth

$735Iberia

Mon, Feb 22 - Mon, Mar 8

3:30 pm - 6:50 amPDX Portland-OPO Porto

31h 20m2 stops Vancouver Intl Montreal Pierre Elliott Trudeau Intl

12:05 pm - 9:02 pmOPO Porto-PDX Portland

40h 57m2 stops Zurich San Francisco

$742Multiple Airlines

Sun, Oct 18 - Tue, Nov 3

7:10 am - 8:15 amPDX Portland-OPO Porto

17h 05m1 stop New York John F Kennedy Intl

5:00 am - 10:07 pmOPO Porto-PDX Portland

25h 07m2 stops Amsterdam Schiphol Detroit Metropolitan Wayne County

$748Delta

Wed, Nov 25 - Thu, Dec 10

7:10 am - 10:35 amPDX Portland-OPO Porto

19h 25m2 stops New York John F Kennedy Intl Paris Charles de Gaulle

5:00 am - 10:07 pmOPO Porto-PDX Portland

25h 07m2 stops Amsterdam Schiphol Detroit Metropolitan Wayne County

$752Delta

Wed, Nov 25 - Thu, Dec 10

7:10 am - 8:15 amPDX Portland-OPO Porto

17h 05m1 stop New York John F Kennedy Intl

10:15 am - 10:19 pmOPO Porto-PDX Portland

20h 04m1 stop New York John F Kennedy Intl

$756KLM

Wed, Nov 25 - Thu, Dec 10

1:05 pm - 6:20 pmPDX Portland-OPO Porto

21h 15m1 stop Amsterdam Schiphol

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

14h 10m1 stop Amsterdam Schiphol

$801KLM

Tue, Oct 13 - Wed, Oct 21

11:30 pm - 8:40 amPDX Portland-LIS Lisbon Humberto Delgado

25h 10m2 stops Chicago O'Hare Intl Montreal Pierre Elliott Trudeau Intl

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

39h 52m2 stops Montreal Pierre Elliott Trudeau Intl Chicago O'Hare Intl

$815Air Canada

Fri, Nov 6 - Fri, Nov 20

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

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

12:20 pm - 8:15 pmLIS Lisbon Humberto Delgado-PDX Portland

15h 55m1 stop Washington, D.C. Dulles Intl

$817United Airlines

Tue, Nov 10 - Sat, Nov 21

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

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

12:20 pm - 8:15 pmLIS Lisbon Humberto Delgado-PDX Portland

15h 55m1 stop Washington, D.C. Dulles Intl

$817United Airlines

Tue, Nov 10 - Sun, Nov 22

7:10 pm - 8:55 amPDX Portland-LIS Lisbon Humberto Delgado

29h 45m2 stops Vancouver Intl Toronto Pearson Intl

11:20 am - 9:26 amLIS Lisbon Humberto Delgado-PDX Portland

30h 06m2 stops Toronto Pearson Intl Vancouver Intl

$819Air Canada

Fri, Nov 6 - Wed, Nov 18

Cheap last minute flights

Enter your travel dates to find the best prices.

11:02 pm - 8:40 amPDX Portland-PDL Ponta Delgada Nordela

26h 38m2 stops Chicago O'Hare Intl Newark

11:00 am - 9:05 pmPDL Ponta Delgada Nordela-PDX Portland

17h 05m2 stops Newark Denver Intl

$944United Airlines

Sat, Sep 5 - Fri, Sep 18

11:02 pm - 8:40 amPDX Portland-PDL Ponta Delgada Nordela

26h 38m2 stops Chicago O'Hare Intl Newark

11:00 am - 10:03 pmPDL Ponta Delgada Nordela-PDX Portland

18h 03m1 stop Newark

$944United Airlines

Sat, Sep 5 - Fri, Sep 18

1:05 pm - 3:30 pmPDX Portland-OPO Porto

18h 25m1 stop Amsterdam Schiphol

11:45 am - 11:10 amOPO Porto-PDX Portland

31h 25m1 stop Amsterdam Schiphol

$1,137Delta

Wed, Sep 2 - Sun, Sep 13

7:00 am - 3:25 pmPDX Portland-OPO Porto

24h 25m2 stops New York John F Kennedy Intl Paris Charles de Gaulle

11:45 am - 11:10 amOPO Porto-PDX Portland

31h 25m1 stop Amsterdam Schiphol

$1,137Delta

Wed, Sep 2 - Sun, Sep 13

11:18 pm - 7:00 amPDX Portland-OPO Porto

47h 42m2 stops Newark Montreal Pierre Elliott Trudeau Intl

6:00 am - 9:31 amOPO Porto-PDX Portland

35h 31m2 stops Frankfurt am Main Vancouver Intl

$1,205Multiple Airlines

Sat, Sep 5 - Sun, Sep 13

11:18 pm - 7:00 amPDX Portland-OPO Porto

47h 42m2 stops Newark Montreal Pierre Elliott Trudeau Intl

6:00 am - 9:31 amOPO Porto-PDX Portland

35h 31m2 stops Frankfurt am Main Vancouver Intl

$1,290Multiple Airlines

Sat, Sep 5 - Sun, Sep 13

11:18 pm - 9:45 amPDX Portland-OPO Porto

26h 27m1 stop Newark

9:00 am - 9:50 amOPO Porto-PDX Portland

32h 50m1 stop Newark

$1,375Lufthansa

Sat, Sep 5 - Sun, Sep 13

1:05 pm - 10:55 amPDX Portland-LIS Lisbon Humberto Delgado

13h 50m1 stop Amsterdam Schiphol

5:00 am - 11:10 amLIS Lisbon Humberto Delgado-PDX Portland

14h 10m1 stop Amsterdam Schiphol

$1,397KLM

Sat, Sep 5 - Thu, Sep 17

10:10 am - 11:05 amPDX Portland-LIS Lisbon Humberto Delgado

16h 55m2 stops Vancouver Intl Toronto Pearson Intl

12:25 pm - 6:31 pmLIS Lisbon Humberto Delgado-PDX Portland

38h 06m2 stops Frankfurt am Main Vancouver Intl

$2,458Lufthansa

Tue, Sep 1 - Sat, Nov 28

1:05 pm - 3:30 pmPDX Portland-OPO Porto

18h 25m1 stop Amsterdam Schiphol

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

14h 10m1 stop Amsterdam Schiphol

$2,490KLM

Wed, Sep 2 - Thu, Sep 17

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Air Canada flights from Portland to Portugal

Our best Air Canada deals on Portland to Portugal flight tickets

Air Canada

Nov 6

PDX11:30 pmPortland

25h 10m

2 stops

LIS8:40 amLisbon Humberto Delgado

Nov 20

LIS11:20 amLisbon Humberto Delgado

39h 52m

2 stops

PDX7:12 pmPortland

$815

Air Canada

Nov 6

PDX7:10 pmPortland

29h 45m

2 stops

LIS8:55 amLisbon Humberto Delgado

Nov 19

LIS10:55 amLisbon Humberto Delgado

30h 31m

2 stops

PDX9:26 amPortland

$819

Air Canada

Nov 12

PDX11:30 pmPortland

25h 50m

2 stops

LIS9:20 amLisbon Humberto Delgado

Nov 17

LIS12:50 pmLisbon Humberto Delgado

30h 57m

2 stops

PDX11:47 amPortland

$830

SWISS flights from Portland to Portugal

Our best SWISS deals on Portland to Portugal flight tickets

SWISS

Nov 6

PDX1:25 pmPortland

41h 10m

2 stops

LIS2:35 pmLisbon Humberto Delgado

Nov 16

LIS11:50 amLisbon Humberto Delgado

42h 37m

2 stops

PDX10:27 pmPortland

$820

SWISS

Oct 23

PDX7:02 amPortland

27h 28m

2 stops

OPO6:30 pmPorto

Nov 2

OPO7:20 pmPorto

35h 07m

2 stops

PDX10:27 pmPortland

$855

SWISS

Oct 13

PDX7:02 amPortland

20h 13m

2 stops

LIS11:15 amLisbon Humberto Delgado

Oct 29

LIS3:35 pmLisbon Humberto Delgado

38h 11m

2 stops

PDX10:46 pmPortland

$861

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandPorto

PDX Portland - OPO Porto

PDXOPO

Portland

Mon 2/22

5:45 pm-8:00 pm

2 stops18h 15m

Porto

Mon 3/8

8:40 pm-1:46 pm

2 stops25h 06m

$735

PortlandPorto

PDX Portland - OPO Porto

PDXOPO

Portland

Sun 10/18

3:30 pm-6:50 am

2 stops31h 20m

Porto

Tue 11/3

12:05 pm-9:02 pm

2 stops40h 57m

$742

PortlandPorto

PDX Portland - OPO Porto

PDXOPO

Portland

Wed 11/25

7:10 am-8:15 am

1 stop17h 05m

Porto

Thu 12/10

5:00 am-10:07 pm

2 stops25h 07m

$748

PortlandPorto

PDX Portland - OPO Porto

PDXOPO

Portland

Wed 11/25

7:10 am-10:35 am

2 stops19h 25m

Porto

Thu 12/10

5:00 am-10:07 pm

2 stops25h 07m

$752

PortlandPorto

PDX Portland - OPO Porto

PDXOPO

Portland

Wed 11/25

7:10 am-8:15 am

1 stop17h 05m

Porto

Thu 12/10

10:15 am-10:19 pm

1 stop20h 04m

$756

PortlandPorto

PDX Portland - OPO Porto

PDXOPO

Portland

Tue 10/13

1:05 pm-6:20 pm

1 stop21h 15m

Porto

Wed 10/21

5:00 am-11:10 am

1 stop14h 10m

$801

PortlandLisbon

PDX Portland - LIS Lisbon Humberto Delgado

PDXLIS

Portland

Fri 11/6

11:30 pm-8:40 am

2 stops25h 10m

Lisbon Humberto Delgado

Fri 11/20

11:20 am-7:12 pm

2 stops39h 52m

$815

Quickest round-trip

PortlandLisbon

PDX Portland - LIS Lisbon Humberto Delgado

PDXLIS

Portland

Tue 11/10

8:30 am-10:05 am

1 stop17h 35m

Lisbon Humberto Delgado

Sat 11/21

12:20 pm-8:15 pm

1 stop15h 55m

$817

PortlandLisbon

PDX Portland - LIS Lisbon Humberto Delgado

PDXLIS

Portland

Tue 11/10

8:30 am-10:05 am

1 stop17h 35m

Lisbon Humberto Delgado

Sun 11/22

12:20 pm-8:15 pm

1 stop15h 55m

$817

PortlandLisbon

PDX Portland - LIS Lisbon Humberto Delgado

PDXLIS

Portland

Fri 11/6

7:10 pm-8:55 am

2 stops29h 45m

Lisbon Humberto Delgado

Wed 11/18

11:20 am-9:26 am

2 stops30h 06m

$819

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 $645.

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 $873 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	$280
Fastest flight time	14h 05m
Direct flights	None

The best one-way flight to Portugal from Portland in the past 72 hours is $280. The best round-trip flight deal from Portland to Portugal found on momondo in the last 72 hours is $735.

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 August 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 7.4 695 reviews	Search Virgin Atlantic flights
Icelandair	PriceFrom $360	Free Cancellation	Rating 6.9 738 reviews	Search Icelandair flights
KLM	PriceFrom $492	Free Cancellation	Rating 7.8 1,570 reviews	Search KLM flights
Delta	PriceFrom $494	Free Cancellation	Rating 7.8 8,534 reviews	Search Delta flights
Lufthansa	PriceFrom $501	Free Cancellation	Rating 6.8 8,228 reviews	Search Lufthansa flights
United Airlines	PriceFrom $502	Free Cancellation	Rating 7.4 10,147 reviews	Search United Airlines flights
British Airways	PriceFrom $509	Free Cancellation	Rating 6.7 8,198 reviews	Search British Airways flights
Air Canada	PriceFrom $576	Free Cancellation	Rating 7.1 11,560 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

Cabin classes

Complete your trip

Feeling lucky

Popular cities in Portugal

Flights to Lisbonfrom $554

Flights to Portofrom $528

Flights to Funchalfrom $550

Flights to Farofrom $532

Flights to Ponta Delgadafrom $572

Flights to Lajesfrom $568

Flights to Hortafrom $579

Flights to Pico Islandfrom $688

Flights to Porto Santofrom $725

Flights to Velasfrom $691

Cheap flights from Portland to Portugal from $280

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 10/15. 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

SWISS flights from Portland to Portugal

Our best SWISS 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