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

British Airways, United Airlines, and Delta 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 40% 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 April 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.

$311 Cheap Flights from Portland to Portugal in 2026

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Find the cheapest flights from Portland to Portugal

Round-trip

One-way

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Cheap round-trip flights

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7:30 pm - 7:05 pm

PDX

OPO

15h 35m

1 stop

8:40 pm - 9:20 pm

OPO

PDX

32h 40m

2 stops

$762British Airways

Wed, Oct 21 - Wed, Nov 4

6:45 pm - 8:00 pm

PDX

OPO

18h 15m

2 stops

8:40 pm - 9:20 pm

OPO

PDX

32h 40m

2 stops

$765Iberia

Mon, Oct 26 - Wed, Nov 4

11:55 am - 7:05 pm

PDX

OPO

23h 10m

2 stops

8:40 pm - 9:20 pm

OPO

PDX

32h 40m

2 stops

$766British Airways

Wed, Oct 21 - Wed, Nov 4

6:45 pm - 8:00 pm

PDX

OPO

18h 15m

2 stops

8:40 pm - 10:59 pm

OPO

PDX

34h 19m

2 stops

$795Iberia

Mon, Oct 26 - Mon, Nov 9

7:30 pm - 5:55 pm

PDX

LIS

14h 25m

1 stop

6:30 am - 10:59 pm

LIS

PDX

24h 29m

2 stops

$796Multiple Airlines

Tue, Oct 20 - Tue, Nov 10

10:00 am - 9:30 am

PDX

OPO

16h 30m

1 stop

6:00 am - 8:49 pm

OPO

PDX

22h 49m

2 stops

$802United Airlines

Mon, Oct 26 - Wed, Nov 4

1:38 pm - 3:35 pm

PDX

LIS

17h 57m

2 stops

4:25 pm - 6:41 pm

LIS

PDX

34h 16m

2 stops

$802Scandinavian Airlines

Fri, Sep 18 - Sat, Oct 3

7:30 pm - 11:00 pm

PDX

LIS

19h 30m

1 stop

11:05 am - 8:06 pm

LIS

PDX

17h 01m

1 stop

$803Multiple Airlines

Tue, Oct 20 - Tue, Nov 10

10:56 am - 9:45 am

PDX

OPO

14h 49m

1 stop

12:35 pm - 9:21 pm

OPO

PDX

16h 46m

1 stop

$811United Airlines

Wed, Oct 21 - Wed, Nov 4

1:28 pm - 2:50 pm

PDX

LIS

18h 22m

2 stops

11:05 am - 11:51 pm

LIS

PDX

20h 46m

2 stops

$812American Airlines

Sun, Oct 25 - Tue, Nov 3

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British Airways flights from Portland to Portugal

Our best British Airways deals on Portland to Portugal flight tickets

British Airways

Oct 21

PDX7:30 pmPortland

15h 35m

1 stop

OPO7:05 pmPorto

Nov 4

OPO8:40 pmPorto

32h 40m

2 stops

PDX9:20 pmPortland

$762

British Airways

Oct 21

PDX11:55 amPortland

23h 10m

2 stops

OPO7:05 pmPorto

Nov 4

OPO8:40 pmPorto

32h 40m

2 stops

PDX9:20 pmPortland

$766

British Airways

Oct 20

PDX7:30 pmPortland

19h 30m

1 stop

LIS11:00 pmLisbon Humberto Delgado

Nov 10

LIS7:40 pmLisbon Humberto Delgado

28h 15m

1 stop

PDX3:55 pmPortland

$797

Delta flights from Portland to Portugal

Our best Delta deals on Portland to Portugal flight tickets

Delta

Oct 18

PDX7:00 amPortland

17h 00m

1 stop

LIS8:00 amLisbon Humberto Delgado

Nov 2

LIS12:20 pmLisbon Humberto Delgado

34h 45m

2 stops

PDX3:05 pmPortland

$886

Delta

Oct 17

PDX10:05 pmPortland

25h 55m

1 stop

LIS8:00 amLisbon Humberto Delgado

Nov 2

LIS12:20 pmLisbon Humberto Delgado

36h 07m

2 stops

PDX4:27 pmPortland

$893

Delta

Sep 19

PDX10:05 pmPortland

28h 20m

1 stop

OPO10:25 amPorto

Oct 12

OPO11:25 amPorto

31h 45m

1 stop

PDX11:10 amPortland

$917

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandPorto

PDX - OPO

PDXOPO

Portland

Wed 10/21

7:30 pm-7:05 pm

1 stop15h 35m

Porto

Wed 11/4

8:40 pm-9:20 pm

2 stops32h 40m

$762

PortlandPorto

PDX - OPO

PDXOPO

Portland

Mon 10/26

6:45 pm-8:00 pm

2 stops18h 15m

Porto

Wed 11/4

8:40 pm-9:20 pm

2 stops32h 40m

$765

PortlandPorto

PDX - OPO

PDXOPO

Portland

Wed 10/21

11:55 am-7:05 pm

2 stops23h 10m

Porto

Wed 11/4

8:40 pm-9:20 pm

2 stops32h 40m

$766

PortlandPorto

PDX - OPO

PDXOPO

Portland

Mon 10/26

6:45 pm-8:00 pm

2 stops18h 15m

Porto

Mon 11/9

8:40 pm-10:59 pm

2 stops34h 19m

$795

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Tue 10/20

7:30 pm-5:55 pm

1 stop14h 25m

Lisbon Humberto Delgado

Tue 11/10

6:30 am-10:59 pm

2 stops24h 29m

$796

PortlandPorto

PDX - OPO

PDXOPO

Portland

Mon 10/26

10:00 am-9:30 am

1 stop16h 30m

Porto

Wed 11/4

6:00 am-8:49 pm

2 stops22h 49m

$802

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Fri 9/18

1:38 pm-3:35 pm

2 stops17h 57m

Lisbon Humberto Delgado

Sat 10/3

4:25 pm-6:41 pm

2 stops34h 16m

$802

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Tue 10/20

7:30 pm-11:00 pm

1 stop19h 30m

Lisbon Humberto Delgado

Tue 11/10

11:05 am-8:06 pm

1 stop17h 01m

$803

Quickest round-trip

PortlandPorto

PDX - OPO

PDXOPO

Portland

Wed 10/21

10:56 am-9:45 am

1 stop14h 49m

Porto

Wed 11/4

12:35 pm-9:21 pm

1 stop16h 46m

$811

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Sun 10/25

1:28 pm-2:50 pm

2 stops18h 22m

Lisbon Humberto Delgado

Tue 11/3

11:05 am-11:51 pm

2 stops20h 46m

$812

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 $824 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 31% 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 25m
Direct flights	None

The fastest flight from Portland to Portugal takes 14h 25m

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 April 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 7.0 646 reviews	Search Icelandair flights
KLM	PriceFrom $492	Free Cancellation	Rating 7.8 1,512 reviews	Search KLM flights
Delta	PriceFrom $494	Free Cancellation	Rating 7.9 8,466 reviews	Search Delta flights
Lufthansa	PriceFrom $501	Free Cancellation	Rating 6.8 7,962 reviews	Search Lufthansa flights
British Airways	PriceFrom $510	Free Cancellation	Rating 6.7 7,937 reviews	Search British Airways flights
American Airlines	PriceFrom $524	Free Cancellation	Rating 7.1 11,682 reviews	Search American Airlines flights
United Airlines	PriceFrom $537	Free Cancellation	Rating 7.4 9,677 reviews	Search United Airlines flights
Air Canada	PriceFrom $577	Free Cancellation	Rating 7.1 10,982 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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Feeling lucky

Popular cities in Portugal

Flights to Lisbonfrom $458

Flights to Portofrom $498

Flights to Funchalfrom $604

Flights to Farofrom $621

Flights to Ponta Delgadafrom $634

Flights to Lajesfrom $640

Flights to Pico Islandfrom $623

Flights to Hortafrom $668

Flights to Porto Santofrom $829

Flights to Velasfrom $672

Cheap flights from Portland to Portugal from $311

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 5/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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British Airways flights from Portland to Portugal

Our best British Airways deals on Portland to Portugal flight tickets

Delta flights from Portland to Portugal

Our best Delta deals on Portland to Portugal flight tickets

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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