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

Air Canada, Icelandair, and British Airways 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 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 July 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

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.

10:00 am - 9:20 am

PDX

LIS

16h 20m

2 stops

5:00 am - 8:46 pm

LIS

PDX

23h 46m

2 stops

$718Multiple Airlines

Sun, Oct 25 - Wed, Nov 11

10:00 am - 9:20 am

PDX

LIS

16h 20m

2 stops

5:00 am - 6:31 pm

LIS

PDX

21h 31m

2 stops

$724Multiple Airlines

Sun, Oct 25 - Tue, Nov 3

3:30 pm - 1:50 pm

PDX

LIS

14h 20m

1 stop

3:00 pm - 5:55 pm

LIS

PDX

34h 55m

1 stop

$725Icelandair

Mon, Sep 21 - Tue, Oct 6

5:00 am - 7:00 am

PDX

OPO

18h 00m

2 stops

6:00 am - 12:35 am

OPO

PDX

26h 35m

3 stops

$744United Airlines

Wed, Oct 14 - Wed, Nov 4

1:05 pm - 6:20 pm

PDX

OPO

21h 15m

1 stop

5:00 am - 5:04 pm

OPO

PDX

20h 04m

2 stops

$746Delta

Wed, Oct 14 - Wed, Nov 4

10:58 am - 8:20 am

PDX

LIS

13h 22m

1 stop

12:50 pm - 3:23 pm

LIS

PDX

34h 33m

2 stops

$746United Airlines

Tue, Oct 20 - Tue, Nov 10

11:39 am - 3:30 pm

PDX

OPO

19h 51m

2 stops

5:00 am - 5:04 pm

OPO

PDX

20h 04m

2 stops

$751Delta

Wed, Oct 14 - Wed, Nov 4

1:20 pm - 1:50 pm

PDX

FAO

16h 30m

1 stop

2:40 pm - 11:20 am

FAO

PDX

28h 40m

1 stop

$908KLM

Sun, Nov 8 - Sat, Nov 14

11:39 am - 1:50 pm

PDX

FAO

18h 11m

2 stops

2:40 pm - 11:20 am

FAO

PDX

28h 40m

1 stop

$913KLM

Sun, Nov 8 - Sat, Nov 14

7:30 pm - 7:10 pm

PDX

FAO

15h 40m

1 stop

11:30 am - 5:40 pm

FAO

PDX

14h 10m

1 stop

$929British Airways

Tue, Sep 29 - Tue, Oct 20

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Lufthansa flights from Portland to Portugal

Our best Lufthansa deals on Portland to Portugal flight tickets

Lufthansa

Oct 20

PDX3:30 pmPortland

33h 50m

2 stops

LIS9:20 amLisbon Humberto Delgado

Nov 10

LIS5:00 amLisbon Humberto Delgado

22h 07m

2 stops

PDX7:07 pmPortland

$740

Lufthansa

Oct 22

PDX3:30 pmPortland

33h 50m

2 stops

LIS9:20 amLisbon Humberto Delgado

Nov 4

LIS5:00 amLisbon Humberto Delgado

26h 12m

2 stops

PDX11:12 pmPortland

$790

Lufthansa

Sep 21

PDX3:30 pmPortland

33h 50m

2 stops

LIS9:20 amLisbon Humberto Delgado

Oct 1

LIS5:05 amLisbon Humberto Delgado

25h 18m

2 stops

PDX10:23 pmPortland

$801

British Airways flights from Portland to Portugal

Our best British Airways deals on Portland to Portugal flight tickets

British Airways

Oct 25

PDX6:45 pmPortland

16h 00m

1 stop

LIS5:45 pmLisbon Humberto Delgado

Nov 11

LIS11:05 amLisbon Humberto Delgado

20h 25m

1 stop

PDX11:30 pmPortland

$759

British Airways

Dec 9

PDX5:45 pmPortland

20h 05m

1 stop

LIS9:50 pmLisbon Humberto Delgado

Dec 22

LIS7:40 pmLisbon Humberto Delgado

28h 10m

1 stop

PDX3:50 pmPortland

$816

British Airways

Dec 9

PDX5:45 pmPortland

20h 05m

1 stop

LIS9:50 pmLisbon Humberto Delgado

Dec 22

LIS7:40 pmLisbon Humberto Delgado

28h 10m

1 stop

PDX3:50 pmPortland

$817

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Sun 10/25

10:00 am-9:20 am

2 stops16h 20m

Lisbon Humberto Delgado

Wed 11/11

5:00 am-8:46 pm

2 stops23h 46m

$718

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Sun 10/25

10:00 am-9:20 am

2 stops16h 20m

Lisbon Humberto Delgado

Tue 11/3

5:00 am-6:31 pm

2 stops21h 31m

$724

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Mon 9/21

3:30 pm-1:50 pm

1 stop14h 20m

Lisbon Humberto Delgado

Tue 10/6

3:00 pm-5:55 pm

1 stop34h 55m

$725

PortlandPorto

PDX - OPO

PDXOPO

Portland

Wed 10/14

5:00 am-7:00 am

2 stops18h 00m

Porto

Wed 11/4

6:00 am-12:35 am

3 stops26h 35m

$744

PortlandPorto

PDX - OPO

PDXOPO

Portland

Wed 10/14

1:05 pm-6:20 pm

1 stop21h 15m

Porto

Wed 11/4

5:00 am-5:04 pm

2 stops20h 04m

$746

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Tue 10/20

10:58 am-8:20 am

1 stop13h 22m

Lisbon Humberto Delgado

Tue 11/10

12:50 pm-3:23 pm

2 stops34h 33m

$746

PortlandPorto

PDX - OPO

PDXOPO

Portland

Wed 10/14

11:39 am-3:30 pm

2 stops19h 51m

Porto

Wed 11/4

5:00 am-5:04 pm

2 stops20h 04m

$751

PortlandFaro

PDX - FAO

PDXFAO

Portland

Sun 11/8

1:20 pm-1:50 pm

1 stop16h 30m

Faro

Sat 11/14

2:40 pm-11:20 am

1 stop28h 40m

$908

PortlandFaro

PDX - FAO

PDXFAO

Portland

Sun 11/8

11:39 am-1:50 pm

2 stops18h 11m

Faro

Sat 11/14

2:40 pm-11:20 am

1 stop28h 40m

$913

Quickest round-trip

PortlandFaro

PDX - FAO

PDXFAO

Portland

Tue 9/29

7:30 pm-7:10 pm

1 stop15h 40m

Faro

Tue 10/20

11:30 am-5:40 pm

1 stop14h 10m

$929

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 July. Flight prices, which tend to average around $318, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of July, then book flights to Portugal from Portland during August instead. Flights to Portugal in August, while not as cheap as those in July, still average around $335.

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 $852 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 $732 on momondo.

Can stopping save me money on Portland to Portugal flights?

You could potentially save up to 13% 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 15m
Direct flights	None

The fastest flight from Portland to Portugal takes 14h 15m

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 July 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 7.5 693 reviews	Search Virgin Atlantic flights
Icelandair	PriceFrom $360	Free Cancellation	Rating 7.0 704 reviews	Search Icelandair flights
KLM	PriceFrom $492	Free Cancellation	Rating 7.8 1,537 reviews	Search KLM flights
Delta	PriceFrom $492	Free Cancellation	Rating 7.8 8,460 reviews	Search Delta flights
Lufthansa	PriceFrom $501	Free Cancellation	Rating 6.8 8,128 reviews	Search Lufthansa flights
United Airlines	PriceFrom $502	Free Cancellation	Rating 7.4 9,980 reviews	Search United Airlines flights
British Airways	PriceFrom $510	Free Cancellation	Rating 6.7 8,107 reviews	Search British Airways flights
Air Canada	PriceFrom $584	Free Cancellation	Rating 7.1 11,328 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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Complete your trip

Feeling lucky

Popular cities in Portugal

Flights to Lisbonfrom $442

Flights to Portofrom $514

Flights to Funchalfrom $578

Flights to Farofrom $562

Flights to Ponta Delgadafrom $554

Flights to Lajesfrom $585

Flights to Hortafrom $695

Flights to Pico Islandfrom $562

Flights to Porto Santofrom $594

Flights to Velasfrom $580

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 10/12. 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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Lufthansa flights from Portland to Portugal

Our best Lufthansa 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

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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