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Cheap flights from Portland to Portugal from $326

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 11/1. 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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Cheap round-trip flights

Enter your travel dates to find the best prices.
Air Canada Logo
3:15 pm - 9:20 amPDX-LIS
34h 05m2 stops
Air Canada Logo
10:50 am - 2:40 pmLIS-PDX
35h 50m2 stops
$504Air Canada
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Mon, Nov 24 - Sun, Dec 7
Multiple Airlines Logo
9:50 am - 3:05 pmPDX-LIS
22h 15m2 stops
Multiple Airlines Logo
6:10 am - 6:30 pmLIS-PDX
19h 20m2 stops
$520Multiple Airlines
Find Deal
Sun, Mar 8 - Tue, Mar 17
Delta Logo
7:05 am - 9:00 amPDX-LIS
17h 55m1 stop
Delta Logo
5:00 am - 11:25 amLIS-PDX
14h 25m1 stop
$531Delta
Find Deal
Mon, Nov 24 - Sun, Dec 7
United Airlines Logo
8:20 am - 10:15 amPDX-LIS
17h 55m1 stop
United Airlines Logo
11:20 am - 11:48 amLIS-PDX
32h 28m2 stops
$532United Airlines
Find Deal
Thu, Nov 27 - Tue, Dec 9
Delta Logo
1:25 pm - 3:25 pmPDX-OPO
18h 00m1 stop
Delta Logo
5:00 am - 11:25 amOPO-PDX
14h 25m1 stop
$533Delta
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Mon, Nov 24 - Sun, Dec 7
KLM Logo
7:05 am - 9:00 amPDX-LIS
17h 55m1 stop
KLM Logo
5:00 am - 11:25 amLIS-PDX
14h 25m1 stop
$535KLM
Find Deal
Fri, Nov 28 - Fri, Dec 5
KLM Logo
1:25 pm - 10:30 amPDX-OPO
13h 05m1 stop
KLM Logo
6:30 am - 8:52 pmOPO-PDX
22h 22m2 stops
$542KLM
Find Deal
Fri, Nov 28 - Fri, Dec 12
United Airlines Logo
11:12 pm - 9:20 amPDX-LIS
26h 08m2 stops
United Airlines Logo
6:10 am - 12:26 amLIS-PDX
26h 16m2 stops
$543United Airlines
Find Deal
Mon, Nov 17 - Mon, Nov 24
British Airways Logo
6:45 pm - 9:45 pmPDX-LIS
20h 00m1 stop
British Airways Logo
7:20 am - 5:40 pmLIS-PDX
18h 20m1 stop
$577British Airways
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Sun, Mar 15 - Fri, Apr 3
British Airways Logo
6:00 am - 2:50 pmPDX-LIS
24h 50m2 stops
British Airways Logo
3:55 pm - 3:55 pmLIS-PDX
32h 00m1 stop
$581British Airways
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Sun, Feb 1 - Sat, Feb 7

Virgin Atlantic flights from Portland to Portugal

Our best Virgin Atlantic deals on Portland to Portugal flight tickets
Virgin Atlantic
Nov 1
PDX1:40 pmPortland
36h 15m
1 stop
LIS8:55 amLisbon Humberto Delgado
Nov 13
LIS10:40 amLisbon Humberto Delgado
19h 25m
2 stops
PDX10:05 pmPortland
$586
Find similar
Virgin Atlantic
Nov 1
PDX1:40 pmPortland
36h 15m
1 stop
LIS8:55 amLisbon Humberto Delgado
Nov 13
LIS10:00 amLisbon Humberto Delgado
18h 43m
1 stop
PDX8:43 pmPortland
$702
Find similar

Air Canada flights from Portland to Portugal

Our best Air Canada deals on Portland to Portugal flight tickets
Air Canada
Nov 24
PDX3:15 pmPortland
34h 05m
2 stops
LIS9:20 amLisbon Humberto Delgado
Dec 7
LIS10:50 amLisbon Humberto Delgado
35h 50m
2 stops
PDX2:40 pmPortland
$504
Find similar
Air Canada
Nov 26
PDX7:00 pmPortland
30h 20m
2 stops
LIS9:20 amLisbon Humberto Delgado
Dec 7
LIS5:00 amLisbon Humberto Delgado
36h 15m
2 stops
PDX9:15 amPortland
$527
Find similar
Air Canada
Jan 10
PDX5:35 amPortland
19h 20m
2 stops
LIS8:55 amLisbon Humberto Delgado
Jan 20
LIS6:10 amLisbon Humberto Delgado
20h 20m
2 stops
PDX6:30 pmPortland
$530
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 October 22, 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 11/24

3:15 pm-9:20 am

2 stops34h 05m

Lisbon Humberto Delgado

Sun 12/7

10:50 am-2:40 pm

2 stops35h 50m

$504

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Sun 3/8

9:50 am-3:05 pm

2 stops22h 15m

Lisbon Humberto Delgado

Tue 3/17

6:10 am-6:30 pm

2 stops19h 20m

$520

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Mon 11/24

7:05 am-9:00 am

1 stop17h 55m

Lisbon Humberto Delgado

Sun 12/7

5:00 am-11:25 am

1 stop14h 25m

$531

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Thu 11/27

8:20 am-10:15 am

1 stop17h 55m

Lisbon Humberto Delgado

Tue 12/9

11:20 am-11:48 am

2 stops32h 28m

$532

PortlandPorto

PDX - OPO

PDXOPO

Portland

Mon 11/24

1:25 pm-3:25 pm

1 stop18h 00m

Porto

Sun 12/7

5:00 am-11:25 am

1 stop14h 25m

$533

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Fri 11/28

7:05 am-9:00 am

1 stop17h 55m

Lisbon Humberto Delgado

Fri 12/5

5:00 am-11:25 am

1 stop14h 25m

$535

PortlandPorto

PDX - OPO

PDXOPO

Portland

Fri 11/28

1:25 pm-10:30 am

1 stop13h 05m

Porto

Fri 12/12

6:30 am-8:52 pm

2 stops22h 22m

$542

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Mon 11/17

11:12 pm-9:20 am

2 stops26h 08m

Lisbon Humberto Delgado

Mon 11/24

6:10 am-12:26 am

2 stops26h 16m

$543

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Sun 3/15

6:45 pm-9:45 pm

1 stop20h 00m

Lisbon Humberto Delgado

Fri 4/3

7:20 am-5:40 pm

1 stop18h 20m

$577

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Sun 2/1

6:00 am-2:50 pm

2 stops24h 50m

Lisbon Humberto Delgado

Sat 2/7

3:55 pm-3:55 pm

1 stop32h 00m

$581

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 $620, 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 $914 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 $792 on momondo.

Can stopping save me money on Portland to Portugal flights?

You could potentially save up to 5% 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

Direct flights

None
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 $434Free CancellationRating
7.0
560 reviews
Search Icelandair flights
American AirlinesPriceFrom $564Free CancellationRating
7.2
11,028 reviews
Search American Airlines flights
KLMPriceFrom $577Free CancellationRating
7.7
1,404 reviews
Search KLM flights
LufthansaPriceFrom $578Free CancellationRating
6.8
7,507 reviews
Search Lufthansa flights
Scandinavian AirlinesPriceFrom $581Free CancellationRating
7.4
1,535 reviews
Search Scandinavian Airlines flights
United AirlinesPriceFrom $589Free CancellationRating
7.4
8,988 reviews
Search United Airlines flights
Virgin AtlanticPriceFrom $603Free CancellationRating
7.5
670 reviews
Search Virgin Atlantic flights
DeltaPriceFrom $605Free CancellationRating
7.9
7,979 reviews
Search Delta flights
Air CanadaPriceFrom $623Free CancellationRating
7.1
10,335 reviews
Search Air Canada flights
British AirwaysPriceFrom $652Free CancellationRating
6.7
7,466 reviews
Search British Airways 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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