What airlines fly to Portugal?

British Airways, Delta and KLM 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 41% 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?

American Airlines, United Airlines, and KLM 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 May 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.

$317 Cheap Flights from Portland to Portugal in 2026

1 adult

0 bags

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 pm

PDX

OPO

18h 15m

2 stops

8:20 am - 11:51 pm

OPO

PDX

23h 31m

2 stops

$754Multiple Airlines

Sun, Nov 1 - Tue, Nov 24

1:30 pm - 4:00 pm

PDX

OPO

18h 30m

2 stops

8:20 am - 11:51 pm

OPO

PDX

23h 31m

2 stops

$756American Airlines

Sun, Oct 18 - Tue, Nov 17

7:45 pm - 7:00 am

PDX

OPO

51h 15m

2 stops

6:15 am - 9:25 am

OPO

PDX

35h 10m

2 stops

$793Air Canada

Sat, Oct 17 - Fri, Nov 20

5:45 pm - 5:45 pm

PDX

LIS

16h 00m

1 stop

6:30 am - 10:59 pm

LIS

PDX

24h 29m

2 stops

$796Multiple Airlines

Sun, Nov 1 - Tue, Nov 24

10:10 am - 6:30 pm

PDX

OPO

24h 20m

2 stops

6:15 am - 2:40 pm

OPO

PDX

40h 25m

2 stops

$799Air Canada

Wed, Oct 21 - Fri, Nov 20

10:56 am - 9:45 am

PDX

OPO

14h 49m

1 stop

12:30 pm - 9:30 am

OPO

PDX

29h 00m

2 stops

$802United Airlines

Sun, Oct 18 - Tue, Nov 17

5:00 am - 7:00 am

PDX

OPO

18h 00m

2 stops

6:00 am - 6:05 pm

OPO

PDX

20h 05m

2 stops

$805United Airlines

Wed, Oct 21 - Wed, Nov 18

5:45 pm - 9:45 pm

PDX

LIS

20h 00m

1 stop

7:40 pm - 3:55 pm

LIS

PDX

28h 15m

1 stop

$823British Airways

Sun, Nov 1 - Tue, Nov 24

1:05 pm - 8:50 am

PDX

FAO

35h 45m

1 stop

8:50 am - 8:49 pm

FAO

PDX

19h 59m

2 stops

$982KLM

Sun, Aug 9 - Fri, Sep 4

3:00 pm - 7:30 pm

PDX

FAO

20h 30m

2 stops

8:50 am - 8:49 pm

FAO

PDX

19h 59m

2 stops

$987KLM

Sun, Aug 9 - Fri, Sep 4

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Scandinavian Airlines flights from Portland to Portugal

Our best Scandinavian Airlines deals on Portland to Portugal flight tickets

Scandinavian Airlines

Oct 26

PDX1:00 pmPortland

44h 05m

2 stops

LIS4:05 pmLisbon Humberto Delgado

Nov 17

LIS4:55 pmLisbon Humberto Delgado

37h 31m

2 stops

PDX10:26 pmPortland

$832

Scandinavian Airlines

Oct 27

PDX10:00 amPortland

47h 05m

2 stops

LIS4:05 pmLisbon Humberto Delgado

Nov 17

LIS4:55 pmLisbon Humberto Delgado

37h 31m

2 stops

PDX10:26 pmPortland

$838

British Airways flights from Portland to Portugal

Our best British Airways deals on Portland to Portugal flight tickets

British Airways

Nov 1

PDX5:45 pmPortland

20h 00m

1 stop

LIS9:45 pmLisbon Humberto Delgado

Nov 24

LIS7:40 pmLisbon Humberto Delgado

28h 15m

1 stop

PDX3:55 pmPortland

$823

British Airways

Oct 26

PDX6:45 pmPortland

17h 10m

1 stop

LIS6:55 pmLisbon Humberto Delgado

Nov 17

LIS12:55 pmLisbon Humberto Delgado

35h 00m

1 stop

PDX3:55 pmPortland

$840

British Airways

Oct 26

PDX6:45 pmPortland

17h 10m

1 stop

LIS6:55 pmLisbon Humberto Delgado

Nov 14

LIS12:55 pmLisbon Humberto Delgado

35h 00m

1 stop

PDX3:55 pmPortland

$864

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandPorto

PDX - OPO

PDXOPO

Portland

Sun 11/1

5:45 pm-8:00 pm

2 stops18h 15m

Porto

Tue 11/24

8:20 am-11:51 pm

2 stops23h 31m

$754

PortlandPorto

PDX - OPO

PDXOPO

Portland

Sun 10/18

1:30 pm-4:00 pm

2 stops18h 30m

Porto

Tue 11/17

8:20 am-11:51 pm

2 stops23h 31m

$756

PortlandPorto

PDX - OPO

PDXOPO

Portland

Sat 10/17

7:45 pm-7:00 am

2 stops51h 15m

Porto

Fri 11/20

6:15 am-9:25 am

2 stops35h 10m

$793

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Sun 11/1

5:45 pm-5:45 pm

1 stop16h 00m

Lisbon Humberto Delgado

Tue 11/24

6:30 am-10:59 pm

2 stops24h 29m

$796

PortlandPorto

PDX - OPO

PDXOPO

Portland

Wed 10/21

10:10 am-6:30 pm

2 stops24h 20m

Porto

Fri 11/20

6:15 am-2:40 pm

2 stops40h 25m

$799

PortlandPorto

PDX - OPO

PDXOPO

Portland

Sun 10/18

10:56 am-9:45 am

1 stop14h 49m

Porto

Tue 11/17

12:30 pm-9:30 am

2 stops29h 00m

$802

Quickest round-trip

PortlandPorto

PDX - OPO

PDXOPO

Portland

Wed 10/21

5:00 am-7:00 am

2 stops18h 00m

Porto

Wed 11/18

6:00 am-6:05 pm

2 stops20h 05m

$805

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Sun 11/1

5:45 pm-9:45 pm

1 stop20h 00m

Lisbon Humberto Delgado

Tue 11/24

7:40 pm-3:55 pm

1 stop28h 15m

$823

PortlandFaro

PDX - FAO

PDXFAO

Portland

Sun 8/9

1:05 pm-8:50 am

1 stop35h 45m

Faro

Fri 9/4

8:50 am-8:49 pm

2 stops19h 59m

$982

PortlandFaro

PDX - FAO

PDXFAO

Portland

Sun 8/9

3:00 pm-7:30 pm

2 stops20h 30m

Faro

Fri 9/4

8:50 am-8:49 pm

2 stops19h 59m

$987

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 March. Flight prices, which tend to average around $360, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of March, then book flights to Portugal from Portland during November instead. Flights to Portugal in November, while not as cheap as those in March, still average around $364.

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 $827 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 $685 on momondo.

Can stopping save me money on Portland to Portugal flights?

You could potentially save up to 30% 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

Fastest flight time	14h 05m
Direct flights	None

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 May 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
Icelandair	PriceFrom $360	Free Cancellation	Rating 7.0 650 reviews	Search Icelandair flights
KLM	PriceFrom $492	Free Cancellation	Rating 7.8 1,511 reviews	Search KLM flights
Delta	PriceFrom $494	Free Cancellation	Rating 7.9 8,459 reviews	Search Delta flights
Lufthansa	PriceFrom $501	Free Cancellation	Rating 6.8 7,974 reviews	Search Lufthansa flights
British Airways	PriceFrom $510	Free Cancellation	Rating 6.7 7,944 reviews	Search British Airways flights
American Airlines	PriceFrom $524	Free Cancellation	Rating 7.1 11,667 reviews	Search American Airlines flights
United Airlines	PriceFrom $537	Free Cancellation	Rating 7.4 9,684 reviews	Search United Airlines flights
Air Canada	PriceFrom $577	Free Cancellation	Rating 7.1 11,000 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.

Start using Trips

Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

1 adult

Thu 6/4

Thu 6/11

Email me momondo's favorite deals

By creating a price alert you accept our terms of use and privacy policy.

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 $434

Flights to Portofrom $426

Flights to Funchalfrom $594

Flights to Farofrom $579

Flights to Ponta Delgadafrom $630

Flights to Lajesfrom $694

Flights to Pico Islandfrom $628

Flights to Hortafrom $779

Flights to Porto Santofrom $845

Flights to Velasfrom $754

Cheap flights from Portland to Portugal from $317

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 8/19. 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

Scandinavian Airlines flights from Portland to Portugal

Our best Scandinavian Airlines 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

Find info about flight duration, direct flights, and airports for your flight from Portland to Portugal

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