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Cheap flights from Portland to Portugal from $312

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 1/13. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Portland to Portugal

Cheap round-trip flights

Enter your travel dates to find the best prices.
Icelandair Logo
3:45 pm - 8:20 pm
PDX
-
LIS
21h 35m1 stop
Icelandair Logo
9:20 pm - 6:00 pm
LIS
-
PDX
27h 40m1 stop
$369Icelandair
Sat, Mar 14 - Sun, Mar 22
Icelandair Logo
2:45 pm - 8:20 pm
PDX
-
LIS
21h 35m1 stop
Icelandair Logo
9:20 pm - 6:00 pm
LIS
-
PDX
27h 40m1 stop
$370Icelandair
Sat, Mar 7 - Thu, Mar 19
Air Canada Logo
9:50 am - 9:20 am
PDX
-
LIS
39h 30m2 stops
Air Canada Logo
11:20 am - 10:32 pm
LIS
-
PDX
43h 12m2 stops
$435Air Canada
Mon, Jan 12 - Thu, Jan 22
Air Canada Logo
7:00 pm - 9:20 am
PDX
-
LIS
30h 20m2 stops
Air Canada Logo
11:20 am - 6:56 pm
LIS
-
PDX
39h 36m2 stops
$438Air Canada
Tue, Jan 27 - Tue, Feb 3
United Airlines Logo
7:00 am - 8:10 am
PDX
-
LIS
17h 10m2 stops
United Airlines Logo
11:20 am - 10:40 pm
LIS
-
PDX
43h 20m2 stops
$444United Airlines
Wed, Feb 4 - Wed, Feb 25
United Airlines Logo
5:00 am - 9:20 am
PDX
-
LIS
20h 20m2 stops
United Airlines Logo
11:20 am - 6:56 pm
LIS
-
PDX
39h 36m2 stops
$446United Airlines
Wed, Jan 14 - Wed, Jan 21
Delta Logo
12:40 am - 10:30 am
PDX
-
OPO
25h 50m2 stops
Delta Logo
11:15 am - 12:25 pm
OPO
-
PDX
32h 10m1 stop
$464Delta
Sun, Mar 1 - Tue, Mar 10
Delta Logo
7:00 am - 10:30 am
PDX
-
OPO
19h 30m2 stops
Delta Logo
5:00 am - 9:11 pm
OPO
-
PDX
23h 11m2 stops
$469Delta
Tue, Mar 3 - Tue, Mar 10
KLM Logo
1:25 pm - 4:55 pm
PDX
-
FAO
19h 30m1 stop
KLM Logo
7:45 pm - 11:25 am
FAO
-
PDX
23h 40m1 stop
$538KLM
Fri, Jan 30 - Tue, Feb 3
KLM Logo
1:30 pm - 4:55 pm
PDX
-
FAO
19h 25m2 stops
KLM Logo
7:45 pm - 11:25 am
FAO
-
PDX
23h 40m1 stop
$542KLM
Fri, Jan 30 - Tue, Feb 3

Icelandair flights from Portland to Portugal

Our best Icelandair deals on Portland to Portugal flight tickets
Icelandair
Mar 14
PDX3:45 pmPortland
21h 35m
1 stop
LIS8:20 pmLisbon Humberto Delgado
Mar 22
LIS9:20 pmLisbon Humberto Delgado
27h 40m
1 stop
PDX6:00 pmPortland
$369
Find similar
Icelandair
Mar 7
PDX2:45 pmPortland
21h 35m
1 stop
LIS8:20 pmLisbon Humberto Delgado
Mar 19
LIS9:20 pmLisbon Humberto Delgado
27h 40m
1 stop
PDX6:00 pmPortland
$370
Find similar
Icelandair
Mar 7
PDX2:45 pmPortland
21h 35m
1 stop
LIS8:20 pmLisbon Humberto Delgado
Mar 22
LIS9:20 pmLisbon Humberto Delgado
27h 40m
1 stop
PDX6:00 pmPortland
$397
Find similar

Air Canada flights from Portland to Portugal

Our best Air Canada deals on Portland to Portugal flight tickets
Air Canada
Jan 12
PDX9:50 amPortland
39h 30m
2 stops
LIS9:20 amLisbon Humberto Delgado
Jan 22
LIS11:20 amLisbon Humberto Delgado
43h 12m
2 stops
PDX10:32 pmPortland
$435
Find similar
Air Canada
Jan 27
PDX7:00 pmPortland
30h 20m
2 stops
LIS9:20 amLisbon Humberto Delgado
Feb 3
LIS11:20 amLisbon Humberto Delgado
39h 36m
2 stops
PDX6:56 pmPortland
$438
Find similar
Air Canada
Jan 28
PDX7:00 amPortland
18h 20m
2 stops
LIS9:20 amLisbon Humberto Delgado
Feb 5
LIS11:20 amLisbon Humberto Delgado
39h 36m
2 stops
PDX6:56 pmPortland
$443
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Portland to Portugal that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated December 4, 2025.
Use the filters below to find and compare flights from Portland to Portugal that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Sat 3/14

3:45 pm-8:20 pm

1 stop21h 35m

Lisbon Humberto Delgado

Sun 3/22

9:20 pm-6:00 pm

1 stop27h 40m

$369

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Sat 3/7

2:45 pm-8:20 pm

1 stop21h 35m

Lisbon Humberto Delgado

Thu 3/19

9:20 pm-6:00 pm

1 stop27h 40m

$370

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Mon 1/12

9:50 am-9:20 am

2 stops39h 30m

Lisbon Humberto Delgado

Thu 1/22

11:20 am-10:32 pm

2 stops43h 12m

$435

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Tue 1/27

7:00 pm-9:20 am

2 stops30h 20m

Lisbon Humberto Delgado

Tue 2/3

11:20 am-6:56 pm

2 stops39h 36m

$438

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Wed 2/4

7:00 am-8:10 am

2 stops17h 10m

Lisbon Humberto Delgado

Wed 2/25

11:20 am-10:40 pm

2 stops43h 20m

$444

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Wed 1/14

5:00 am-9:20 am

2 stops20h 20m

Lisbon Humberto Delgado

Wed 1/21

11:20 am-6:56 pm

2 stops39h 36m

$446

PortlandPorto

PDX - OPO

PDXOPO

Portland

Sun 3/1

12:40 am-10:30 am

2 stops25h 50m

Porto

Tue 3/10

11:15 am-12:25 pm

1 stop32h 10m

$464

PortlandPorto

PDX - OPO

PDXOPO

Portland

Tue 3/3

7:00 am-10:30 am

2 stops19h 30m

Porto

Tue 3/10

5:00 am-9:11 pm

2 stops23h 11m

$469

PortlandFaro

PDX - FAO

PDXFAO

Portland

Fri 1/30

1:25 pm-4:55 pm

1 stop19h 30m

Faro

Tue 2/3

7:45 pm-11:25 am

1 stop23h 40m

$538

PortlandFaro

PDX - FAO

PDXFAO

Portland

Fri 1/30

1:30 pm-4:55 pm

2 stops19h 25m

Faro

Tue 2/3

7:45 pm-11:25 am

1 stop23h 40m

$542

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Portugal from

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

What is the cheapest month to fly to Portugal?

The cheapest month to fly to Portugal from Portland is in November. Flight prices, which tend to average around $559, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of November, then book flights to Portugal from Portland during February instead. Flights to Portugal in February, while not as cheap as those in November, still average around $693.

What is the cheapest day to depart on your flight to Portugal?

According to our data, Wednesday is the cheapest day to fly to Portugal from Portland. The lowest ticket price found for a Wednesday departure recently was $864. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. The most expensive day to fly to Portugal is Thursday, with ticket prices averaging around $1,041.

What is the cheapest time of day to depart on your flight to Portugal?

Our most recent data shows that the best time of day to fly to Portugal is in the afternoon. Flights from Portland to Portugal during this time can be as low as $622. In the evening is when there is more demand to fly to Portugal, so prices are often more expensive at around $981 per ticket.

How far in advance should I book a flight 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 $892 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 $785 on momondo.

Can stopping save me money on Portland to Portugal flights?

You could potentially save up to 6% 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

  • 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?

  • 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
IcelandairPriceFrom $391Free CancellationRating
7.0
584 reviews
Search Icelandair flights
KLMPriceFrom $498Free CancellationRating
7.7
1,430 reviews
Search KLM flights
DeltaPriceFrom $498Free CancellationRating
7.9
8,011 reviews
Search Delta flights
American AirlinesPriceFrom $564Free CancellationRating
7.2
11,047 reviews
Search American Airlines flights
United AirlinesPriceFrom $586Free CancellationRating
7.4
9,066 reviews
Search United Airlines flights
Virgin AtlanticPriceFrom $603Free CancellationRating
7.5
675 reviews
Search Virgin Atlantic flights
Air CanadaPriceFrom $634Free CancellationRating
7.1
10,500 reviews
Search Air Canada flights
British AirwaysPriceFrom $650Free CancellationRating
6.7
7,562 reviews
Search British Airways flights
LufthansaPriceFrom $692Free CancellationRating
6.8
7,612 reviews
Search Lufthansa 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.

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Find better results for your trip to Portugal

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