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

British Airways, American Airlines, and WestJet are the most popular carriers operating from Portland to Portugal

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 7 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 May 2026, there are 7 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.

$316 Cheap Flights from Portland to Portugal in 2026

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

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

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 - 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

6:45 pm - 9:45 pm

PDX

LIS

20h 00m

1 stop

6:30 am - 10:59 pm

LIS

PDX

24h 29m

2 stops

$797Multiple Airlines

Sun, Oct 25 - Tue, Nov 3

7:30 pm - 5:55 pm

PDX

LIS

14h 25m

1 stop

8:20 am - 11:51 pm

LIS

PDX

23h 31m

2 stops

$798Multiple Airlines

Tue, Oct 20 - Tue, Nov 10

3:30 pm - 7:00 am

PDX

OPO

55h 30m

2 stops

6:00 am - 8:49 pm

OPO

PDX

22h 49m

2 stops

$831Lufthansa

Mon, Sep 28 - Wed, Nov 4

10:35 pm - 7:00 am

PDX

OPO

24h 25m

2 stops

6:00 am - 10:38 pm

OPO

PDX

24h 38m

2 stops

$836United Airlines

Mon, Sep 28 - Thu, Nov 5

3:30 pm - 7:00 am

PDX

OPO

55h 30m

2 stops

12:30 pm - 10:18 pm

OPO

PDX

41h 48m

2 stops

$837Lufthansa

Sat, Oct 3 - Thu, Nov 5

10:35 pm - 9:45 am

PDX

OPO

27h 10m

1 stop

6:00 am - 8:49 pm

OPO

PDX

22h 49m

2 stops

$839United Airlines

Sat, Oct 3 - Wed, Nov 4

1:05 pm - 7:40 am

PDX

FAO

34h 35m

1 stop

8:30 am - 11:10 am

FAO

PDX

34h 40m

1 stop

$972KLM

Tue, Sep 15 - Thu, Oct 22

1:38 pm - 7:30 pm

PDX

FAO

21h 52m

2 stops

8:50 am - 11:10 am

FAO

PDX

34h 20m

1 stop

$976KLM

Tue, Sep 15 - Wed, Oct 21

7:30 pm - 2:45 pm

PDX

FAO

35h 15m

1 stop

11:30 am - 5:40 pm

FAO

PDX

14h 10m

1 stop

$1,071British Airways

Sun, Sep 13 - Tue, Oct 20

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 20

PDX7:30 pmPortland

14h 25m

1 stop

LIS5:55 pmLisbon Humberto Delgado

Nov 4

LIS7:05 amLisbon Humberto Delgado

16h 50m

1 stop

PDX3:55 pmPortland

$840

British Airways

Sep 30

PDX7:30 pmPortland

15h 35m

1 stop

OPO7:05 pmPorto

Oct 15

OPO8:20 amPorto

22h 39m

2 stops

PDX10:59 pmPortland

$849

Iberia flights from Portland to Portugal

Our best Iberia deals on Portland to Portugal flight tickets

Iberia

Sep 28

PDX7:30 pmPortland

28h 10m

2 stops

OPO7:40 amPorto

Oct 19

OPO8:40 pmPorto

33h 17m

2 stops

PDX9:57 pmPortland

$825

Iberia

Oct 16

PDX7:30 pmPortland

19h 55m

2 stops

LIS11:25 pmLisbon Humberto Delgado

Nov 2

LIS9:05 pmLisbon Humberto Delgado

50h 50m

2 stops

PDX3:55 pmPortland

$879

Iberia

Oct 1

PDX11:55 amPortland

24h 05m

2 stops

OPO8:00 pmPorto

Nov 3

OPO9:55 pmPorto

26h 00m

2 stops

PDX3:55 pmPortland

$886

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

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

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Sun 10/25

6:45 pm-9:45 pm

1 stop20h 00m

Lisbon Humberto Delgado

Tue 11/3

6:30 am-10:59 pm

2 stops24h 29m

$797

Quickest round-trip

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Tue 10/20

7:30 pm-5:55 pm

1 stop14h 25m

Lisbon Humberto Delgado

Tue 11/10

8:20 am-11:51 pm

2 stops23h 31m

$798

PortlandPorto

PDX - OPO

PDXOPO

Portland

Mon 9/28

3:30 pm-7:00 am

2 stops55h 30m

Porto

Wed 11/4

6:00 am-8:49 pm

2 stops22h 49m

$831

PortlandPorto

PDX - OPO

PDXOPO

Portland

Mon 9/28

10:35 pm-7:00 am

2 stops24h 25m

Porto

Thu 11/5

6:00 am-10:38 pm

2 stops24h 38m

$836

PortlandPorto

PDX - OPO

PDXOPO

Portland

Sat 10/3

3:30 pm-7:00 am

2 stops55h 30m

Porto

Thu 11/5

12:30 pm-10:18 pm

2 stops41h 48m

$837

PortlandPorto

PDX - OPO

PDXOPO

Portland

Sat 10/3

10:35 pm-9:45 am

1 stop27h 10m

Porto

Wed 11/4

6:00 am-8:49 pm

2 stops22h 49m

$839

PortlandFaro

PDX - FAO

PDXFAO

Portland

Tue 9/15

1:05 pm-7:40 am

1 stop34h 35m

Faro

Thu 10/22

8:30 am-11:10 am

1 stop34h 40m

$972

PortlandFaro

PDX - FAO

PDXFAO

Portland

Tue 9/15

1:38 pm-7:30 pm

2 stops21h 52m

Faro

Wed 10/21

8:50 am-11:10 am

1 stop34h 20m

$976

PortlandFaro

PDX - FAO

PDXFAO

Portland

Sun 9/13

7:30 pm-2:45 pm

1 stop35h 15m

Faro

Tue 10/20

11:30 am-5:40 pm

1 stop14h 10m

$1,071

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 $826 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 $681 on momondo.

Can stopping save me money on Portland to Portugal flights?

You could potentially save up to 9% 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	15h 10m
Direct flights	None

The fastest flight from Portland to Portugal takes 15h 10m

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 7 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 7.0 652 reviews	Search Icelandair flights
KLM	PriceFrom $491	Free Cancellation	Rating 7.8 1,513 reviews	Search KLM flights
Delta	PriceFrom $494	Free Cancellation	Rating 7.9 8,452 reviews	Search Delta flights
Lufthansa	PriceFrom $501	Free Cancellation	Rating 6.8 7,988 reviews	Search Lufthansa flights
United Airlines	PriceFrom $502	Free Cancellation	Rating 7.4 9,698 reviews	Search United Airlines flights
British Airways	PriceFrom $510	Free Cancellation	Rating 6.7 7,969 reviews	Search British Airways flights
Air Canada	PriceFrom $577	Free Cancellation	Rating 7.1 11,017 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

Tue 6/9

Tue 6/16

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 $435

Flights to Portofrom $438

Flights to Funchalfrom $620

Flights to Farofrom $621

Flights to Ponta Delgadafrom $610

Flights to Lajesfrom $621

Flights to Pico Islandfrom $663

Flights to Hortafrom $777

Flights to Porto Santofrom $1,061

Flights to Velasfrom $771

Cheap flights from Portland to Portugal from $316

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 8/23. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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

Find the cheapest flights from Portland to Portugal

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

British Airways flights from Portland to Portugal

Our best British Airways deals on Portland to Portugal flight tickets

Iberia flights from Portland to Portugal

Our best Iberia 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