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Cheap flights from Portland to Portugal from $325

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 2/22. 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.
Air Canada Logo
3:15 pm - 9:20 am
PDX
-
LIS
34h 05m2 stops
Air Canada Logo
10:50 am - 2:40 pm
LIS
-
PDX
35h 50m2 stops
$472Air Canada
Mon, Jan 19 - Sun, Feb 1
Lufthansa Logo
9:50 am - 7:55 am
PDX
-
LIS
38h 05m2 stops
Lufthansa Logo
5:00 am - 6:49 pm
LIS
-
PDX
21h 49m2 stops
$478Lufthansa
Wed, Feb 4 - Wed, Feb 25
Delta Logo
9:45 pm - 8:00 am
PDX
-
LIS
26h 15m2 stops
Delta Logo
5:00 am - 11:25 am
LIS
-
PDX
14h 25m1 stop
$483Delta
Mon, Jan 19 - Sun, Feb 1
KLM Logo
1:25 pm - 10:30 am
PDX
-
OPO
13h 05m1 stop
KLM Logo
5:00 am - 11:25 am
OPO
-
PDX
14h 25m1 stop
$484KLM
Fri, Jan 30 - Fri, Feb 6
United Airlines Logo
11:59 pm - 8:10 am
PDX
-
LIS
24h 11m2 stops
United Airlines Logo
5:00 am - 9:49 pm
LIS
-
PDX
24h 49m2 stops
$485United Airlines
Thu, Jan 15 - Tue, Jan 27
Delta Logo
7:00 am - 8:00 am
PDX
-
LIS
17h 00m1 stop
Delta Logo
5:00 am - 11:25 am
LIS
-
PDX
14h 25m1 stop
$487Delta
Mon, Feb 2 - Wed, Feb 11
KLM Logo
7:00 am - 3:25 pm
PDX
-
OPO
24h 25m2 stops
KLM Logo
4:10 pm - 11:25 am
OPO
-
PDX
27h 15m1 stop
$489KLM
Sat, Jan 31 - Sat, Feb 7
United Airlines Logo
5:05 am - 9:30 am
PDX
-
OPO
20h 25m2 stops
United Airlines Logo
6:00 am - 9:52 pm
OPO
-
PDX
22h 52m2 stops
$491United Airlines
Thu, Mar 5 - Thu, Mar 19
British Airways Logo
6:45 pm - 5:45 pm
PDX
-
FAO
16h 00m1 stop
British Airways Logo
3:35 pm - 5:40 pm
FAO
-
PDX
34h 05m1 stop
$605British Airways
Wed, Mar 18 - Tue, Mar 31
British Airways Logo
12:04 pm - 4:45 pm
PDX
-
FAO
21h 41m2 stops
British Airways Logo
11:10 am - 5:40 pm
FAO
-
PDX
14h 30m1 stop
$735British Airways
Thu, Mar 19 - Mon, Mar 30

United Airlines flights from Portland to Portugal

Our best United Airlines deals on Portland to Portugal flight tickets
United Airlines
Jan 15
PDX11:59 pmPortland
24h 11m
2 stops
LIS8:10 amLisbon Humberto Delgado
Jan 27
LIS5:00 amLisbon Humberto Delgado
24h 49m
2 stops
PDX9:49 pmPortland
$485
Find similar
United Airlines
Mar 5
PDX5:05 amPortland
20h 25m
2 stops
OPO9:30 amPorto
Mar 19
OPO6:00 amPorto
22h 52m
2 stops
PDX9:52 pmPortland
$491
Find similar
United Airlines
Jan 14
PDX1:24 pmPortland
35h 56m
3 stops
LIS9:20 amLisbon Humberto Delgado
Feb 4
LIS11:20 amLisbon Humberto Delgado
43h 12m
2 stops
PDX10:32 pmPortland
$493
Find similar

British Airways flights from Portland to Portugal

Our best British Airways deals on Portland to Portugal flight tickets
British Airways
Jan 14
PDX5:45 pmPortland
20h 05m
1 stop
LIS9:50 pmLisbon Humberto Delgado
Jan 18
LIS7:05 amLisbon Humberto Delgado
16h 50m
1 stop
PDX3:55 pmPortland
$509
Find similar
British Airways
Feb 4
PDX2:13 pmPortland
23h 37m
2 stops
LIS9:50 pmLisbon Humberto Delgado
Feb 11
LIS7:05 amLisbon Humberto Delgado
16h 50m
1 stop
PDX3:55 pmPortland
$531
Find similar
British Airways
Feb 14
PDX2:05 pmPortland
21h 10m
2 stops
OPO7:15 pmPorto
Feb 21
OPO7:50 pmPorto
28h 05m
1 stop
PDX3:55 pmPortland
$536
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 18, 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

Mon 1/19

3:15 pm-9:20 am

2 stops34h 05m

Lisbon Humberto Delgado

Sun 2/1

10:50 am-2:40 pm

2 stops35h 50m

$472

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Wed 2/4

9:50 am-7:55 am

2 stops38h 05m

Lisbon Humberto Delgado

Wed 2/25

5:00 am-6:49 pm

2 stops21h 49m

$478

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Mon 1/19

9:45 pm-8:00 am

2 stops26h 15m

Lisbon Humberto Delgado

Sun 2/1

5:00 am-11:25 am

1 stop14h 25m

$483

PortlandPorto

PDX - OPO

PDXOPO

Portland

Fri 1/30

1:25 pm-10:30 am

1 stop13h 05m

Porto

Fri 2/6

5:00 am-11:25 am

1 stop14h 25m

$484

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Thu 1/15

11:59 pm-8:10 am

2 stops24h 11m

Lisbon Humberto Delgado

Tue 1/27

5:00 am-9:49 pm

2 stops24h 49m

$485

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Mon 2/2

7:00 am-8:00 am

1 stop17h 00m

Lisbon Humberto Delgado

Wed 2/11

5:00 am-11:25 am

1 stop14h 25m

$487

PortlandPorto

PDX - OPO

PDXOPO

Portland

Sat 1/31

7:00 am-3:25 pm

2 stops24h 25m

Porto

Sat 2/7

4:10 pm-11:25 am

1 stop27h 15m

$489

PortlandPorto

PDX - OPO

PDXOPO

Portland

Thu 3/5

5:05 am-9:30 am

2 stops20h 25m

Porto

Thu 3/19

6:00 am-9:52 pm

2 stops22h 52m

$491

PortlandFaro

PDX - FAO

PDXFAO

Portland

Wed 3/18

6:45 pm-5:45 pm

1 stop16h 00m

Faro

Tue 3/31

3:35 pm-5:40 pm

1 stop34h 05m

$605

PortlandFaro

PDX - FAO

PDXFAO

Portland

Thu 3/19

12:04 pm-4:45 pm

2 stops21h 41m

Faro

Mon 3/30

11:10 am-5:40 pm

1 stop14h 30m

$735

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 $558, 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 October instead. Flights to Portugal in October, while not as cheap as those in November, still average around $740.

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 $906 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 23% 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

  • 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 $360Free CancellationRating
7.0
591 reviews
Search Icelandair flights
KLMPriceFrom $498Free CancellationRating
7.7
1,428 reviews
Search KLM flights
DeltaPriceFrom $560Free CancellationRating
7.9
8,005 reviews
Search Delta flights
American AirlinesPriceFrom $564Free CancellationRating
7.2
11,054 reviews
Search American Airlines flights
United AirlinesPriceFrom $586Free CancellationRating
7.4
9,091 reviews
Search United Airlines flights
British AirwaysPriceFrom $614Free CancellationRating
6.7
7,585 reviews
Search British Airways flights
Air CanadaPriceFrom $634Free CancellationRating
7.1
10,534 reviews
Search Air Canada flights
LufthansaPriceFrom $692Free CancellationRating
6.8
7,634 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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Popular flights according to clicks in the last 7 days on momondo
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