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 42% 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.

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

Icelandair, British Airways, and United Airlines 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 June 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.

$244 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.

11:50 am - 10:45 am

PDX

LIS

14h 55m

2 stops

10:00 am - 9:13 pm

LIS

PDX

19h 13m

1 stop

$244Virgin Atlantic

Tue, Aug 11 - Thu, Aug 20

10:35 pm - 8:00 am

PDX

LIS

25h 25m

1 stop

12:45 pm - 11:20 pm

LIS

PDX

18h 35m

2 stops

$286Virgin Atlantic

Tue, Aug 4 - Thu, Aug 13

10:35 pm - 8:00 am

PDX

LIS

25h 25m

1 stop

12:45 pm - 10:09 pm

LIS

PDX

17h 24m

2 stops

$308Virgin Atlantic

Tue, Aug 4 - Thu, Aug 13

10:00 am - 9:30 am

PDX

OPO

15h 30m

1 stop

6:00 am - 11:12 pm

OPO

PDX

25h 12m

2 stops

$741United Airlines

Tue, Dec 1 - Tue, Dec 15

10:05 pm - 9:05 am

PDX

OPO

27h 00m

1 stop

9:55 am - 11:20 am

OPO

PDX

33h 25m

1 stop

$745KLM

Tue, Dec 1 - Tue, Dec 15

7:45 pm - 7:00 am

PDX

OPO

27h 15m

2 stops

11:50 am - 6:51 pm

OPO

PDX

39h 01m

2 stops

$788Air Canada

Tue, Sep 29 - Thu, Oct 8

3:30 pm - 7:00 am

PDX

OPO

55h 30m

2 stops

11:20 am - 3:56 pm

OPO

PDX

36h 36m

2 stops

$789Air Canada

Mon, Sep 21 - Wed, Sep 30

11:17 pm - 6:15 am

PDX

OPO

22h 58m

1 stop

11:20 am - 9:27 pm

OPO

PDX

42h 07m

2 stops

$790United Airlines

Mon, Sep 21 - Wed, Sep 30

7:00 am - 10:30 am

PDX

OPO

19h 30m

1 stop

11:35 am - 11:10 am

OPO

PDX

31h 35m

1 stop

$793Delta

Mon, Sep 21 - Tue, Sep 29

3:00 pm - 7:30 pm

PDX

FAO

20h 30m

2 stops

9:45 pm - 11:10 am

FAO

PDX

21h 25m

1 stop

$968KLM

Sun, Aug 9 - Mon, Aug 24

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KLM flights from Portland to Portugal

Our best KLM deals on Portland to Portugal flight tickets

KLM

Sep 26

PDX10:00 pmPortland

28h 25m

1 stop

OPO10:25 amPorto

Oct 16

OPO12:45 pmPorto

16h 42m

1 stop

PDX9:27 pmPortland

$816

KLM

Sep 26

PDX10:00 pmPortland

28h 25m

1 stop

OPO10:25 amPorto

Oct 16

OPO12:45 pmPorto

16h 42m

1 stop

PDX9:27 pmPortland

$817

KLM

Oct 23

PDX7:00 amPortland

19h 30m

1 stop

OPO10:30 amPorto

Nov 2

OPO5:00 amPorto

14h 20m

1 stop

PDX11:20 amPortland

$823

Delta flights from Portland to Portugal

Our best Delta deals on Portland to Portugal flight tickets

Delta

Sep 21

PDX7:00 amPortland

19h 30m

1 stop

OPO10:30 amPorto

Sep 29

OPO11:35 amPorto

31h 35m

1 stop

PDX11:10 amPortland

$793

Delta

Sep 30

PDX3:21 pmPortland

22h 39m

2 stops

OPO10:00 pmPorto

Oct 9

OPO5:00 amPorto

14h 10m

1 stop

PDX11:10 amPortland

$796

Delta

Sep 21

PDX1:35 pmPortland

17h 50m

2 stops

OPO3:25 pmPorto

Sep 29

OPO5:00 amPorto

20h 10m

2 stops

PDX5:10 pmPortland

$806

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Tue 8/11

11:50 am-10:45 am

2 stops14h 55m

Lisbon Humberto Delgado

Thu 8/20

10:00 am-9:13 pm

1 stop19h 13m

$244

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Tue 8/4

10:35 pm-8:00 am

1 stop25h 25m

Lisbon Humberto Delgado

Thu 8/13

12:45 pm-11:20 pm

2 stops18h 35m

$286

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Tue 8/4

10:35 pm-8:00 am

1 stop25h 25m

Lisbon Humberto Delgado

Thu 8/13

12:45 pm-10:09 pm

2 stops17h 24m

$308

PortlandPorto

PDX - OPO

PDXOPO

Portland

Tue 12/1

10:00 am-9:30 am

1 stop15h 30m

Porto

Tue 12/15

6:00 am-11:12 pm

2 stops25h 12m

$741

PortlandPorto

PDX - OPO

PDXOPO

Portland

Tue 12/1

10:05 pm-9:05 am

1 stop27h 00m

Porto

Tue 12/15

9:55 am-11:20 am

1 stop33h 25m

$745

PortlandPorto

PDX - OPO

PDXOPO

Portland

Tue 9/29

7:45 pm-7:00 am

2 stops27h 15m

Porto

Thu 10/8

11:50 am-6:51 pm

2 stops39h 01m

$788

PortlandPorto

PDX - OPO

PDXOPO

Portland

Mon 9/21

3:30 pm-7:00 am

2 stops55h 30m

Porto

Wed 9/30

11:20 am-3:56 pm

2 stops36h 36m

$789

PortlandPorto

PDX - OPO

PDXOPO

Portland

Mon 9/21

11:17 pm-6:15 am

1 stop22h 58m

Porto

Wed 9/30

11:20 am-9:27 pm

2 stops42h 07m

$790

PortlandPorto

PDX - OPO

PDXOPO

Portland

Mon 9/21

7:00 am-10:30 am

1 stop19h 30m

Porto

Tue 9/29

11:35 am-11:10 am

1 stop31h 35m

$793

PortlandFaro

PDX - FAO

PDXFAO

Portland

Sun 8/9

3:00 pm-7:30 pm

2 stops20h 30m

Faro

Mon 8/24

9:45 pm-11:10 am

1 stop21h 25m

$968

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 $843 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 $722 on momondo.

Can stopping save me money on Portland to Portugal flights?

You could potentially save up to 17% 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	13h 35m
Direct flights	None

The fastest flight from Portland to Portugal takes 13h 35m

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 June 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 7.0 690 reviews	Search Icelandair flights
KLM	PriceFrom $492	Free Cancellation	Rating 7.8 1,531 reviews	Search KLM flights
Delta	PriceFrom $494	Free Cancellation	Rating 7.8 8,453 reviews	Search Delta flights
Lufthansa	PriceFrom $501	Free Cancellation	Rating 6.8 8,096 reviews	Search Lufthansa flights
United Airlines	PriceFrom $502	Free Cancellation	Rating 7.4 9,893 reviews	Search United Airlines flights
British Airways	PriceFrom $510	Free Cancellation	Rating 6.7 8,071 reviews	Search British Airways flights
Air Canada	PriceFrom $577	Free Cancellation	Rating 7.1 11,265 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

Other flights from Portland

Other flights to Portugal

Airlines

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Complete your trip

Feeling lucky

Popular cities in Portugal

Flights to Lisbonfrom $150

Flights to Portofrom $461

Flights to Funchalfrom $548

Flights to Farofrom $501

Flights to Ponta Delgadafrom $564

Flights to Lajesfrom $562

Flights to Hortafrom $671

Flights to Pico Islandfrom $615

Flights to Porto Santofrom $778

Flights to Velasfrom $693

Cheap flights from Portland to Portugal from $244

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Portland to Portugal departing on 8/11. 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

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Cheap last minute flights

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Big names and deals

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KLM flights from Portland to Portugal

Our best KLM deals on Portland to Portugal flight tickets

Delta flights from Portland to Portugal

Our best Delta 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