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Cheap flights from Portland to Portugal from $294

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 3/9. 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.
Delta Logo
2:25 pm - 10:25 pm
PDX
-
OPO
25h 00m
1 stop
Delta Logo
11:15 am - 12:25 pm
OPO
-
PDX
32h 10m
1 stop
$486Delta
Mon, Mar 9 - Tue, Mar 17
Delta Logo
10:30 pm - 3:25 pm
PDX
-
OPO
33h 55m
2 stops
Delta Logo
11:15 am - 12:25 pm
OPO
-
PDX
32h 10m
1 stop
$490Delta
Sun, Mar 8 - Tue, Mar 17
United Airlines Logo
11:59 pm - 9:30 am
PDX
-
OPO
26h 31m
2 stops
United Airlines Logo
6:00 am - 12:35 am
OPO
-
PDX
25h 35m
2 stops
$492United Airlines
Sun, Mar 8 - Tue, Mar 17
Lufthansa Logo
1:39 pm - 10:45 pm
PDX
-
LIS
25h 06m
2 stops
Lufthansa Logo
5:05 am - 7:05 pm
LIS
-
PDX
22h 00m
2 stops
$494Lufthansa
Tue, Apr 21 - Thu, May 7
Lufthansa Logo
3:15 pm - 9:20 am
PDX
-
LIS
34h 05m
2 stops
Lufthansa Logo
5:05 am - 10:29 pm
LIS
-
PDX
25h 24m
2 stops
$495Lufthansa
Mon, Apr 13 - Mon, Apr 20
United Airlines Logo
5:30 am - 10:45 pm
PDX
-
LIS
33h 15m
2 stops
United Airlines Logo
11:25 am - 6:34 pm
LIS
-
PDX
39h 09m
2 stops
$496United Airlines
Tue, Apr 14 - Tue, Apr 21
KLM Logo
1:25 pm - 8:25 am
PDX
-
FAO
35h 00m
1 stop
KLM Logo
6:55 pm - 7:16 pm
FAO
-
PDX
32h 21m
2 stops
$545KLM
Wed, Feb 25 - Wed, Mar 4
KLM Logo
7:00 am - 8:25 am
PDX
-
FAO
41h 25m
2 stops
KLM Logo
6:55 pm - 8:25 pm
FAO
-
PDX
33h 30m
2 stops
$549KLM
Wed, Feb 25 - Wed, Mar 4
British Airways Logo
3:52 pm - 12:50 pm
PDX
-
FAO
36h 58m
2 stops
British Airways Logo
7:05 pm - 12:20 am
FAO
-
PDX
36h 15m
2 stops
$941British Airways
Thu, Mar 5 - Mon, Mar 9
British Airways Logo
7:30 pm - 7:05 pm
PDX
-
FAO
15h 35m
1 stop
British Airways Logo
6:45 pm - 10:42 pm
FAO
-
PDX
35h 57m
2 stops
$1,002British Airways
Thu, Apr 2 - Sat, Apr 11

Lufthansa flights from Portland to Portugal

Our best Lufthansa deals on Portland to Portugal flight tickets
Lufthansa
Apr 21
PDX1:39 pmPortland
25h 06m
2 stops
LIS10:45 pmLisbon Humberto Delgado
May 7
LIS5:05 amLisbon Humberto Delgado
22h 00m
2 stops
PDX7:05 pmPortland
$494
Lufthansa
Apr 15
PDX1:39 pmPortland
25h 06m
2 stops
LIS10:45 pmLisbon Humberto Delgado
Apr 22
LIS5:05 amLisbon Humberto Delgado
25h 24m
2 stops
PDX10:29 pmPortland
$504
Lufthansa
Apr 9
PDX2:10 pmPortland
24h 05m
2 stops
LIS10:15 pmLisbon Humberto Delgado
Apr 27
LIS7:25 amLisbon Humberto Delgado
24h 33m
2 stops
PDX11:58 pmPortland
$516

Air Canada flights from Portland to Portugal

Our best Air Canada deals on Portland to Portugal flight tickets
Air Canada
Apr 8
PDX7:05 pmPortland
30h 15m
2 stops
LIS9:20 amLisbon Humberto Delgado
Apr 29
LIS1:00 pmLisbon Humberto Delgado
33h 40m
2 stops
PDX2:40 pmPortland
$505
Air Canada
Apr 13
PDX7:05 pmPortland
32h 00m
2 stops
LIS11:05 amLisbon Humberto Delgado
Apr 28
LIS1:00 pmLisbon Humberto Delgado
33h 40m
2 stops
PDX2:40 pmPortland
$510
Air Canada
Apr 20
PDX7:05 pmPortland
32h 00m
2 stops
LIS11:05 amLisbon Humberto Delgado
May 4
LIS11:25 amLisbon Humberto Delgado
35h 48m
2 stops
PDX3:13 pmPortland
$520

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 February 11, 2026.
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

PortlandPorto

PDX - OPO

PDXOPO

Portland

Mon 3/9

2:25 pm-10:25 pm

1 stop25h 00m

Porto

Tue 3/17

11:15 am-12:25 pm

1 stop32h 10m

$486

PortlandPorto

PDX - OPO

PDXOPO

Portland

Sun 3/8

10:30 pm-3:25 pm

2 stops33h 55m

Porto

Tue 3/17

11:15 am-12:25 pm

1 stop32h 10m

$490

PortlandPorto

PDX - OPO

PDXOPO

Portland

Sun 3/8

11:59 pm-9:30 am

2 stops26h 31m

Porto

Tue 3/17

6:00 am-12:35 am

2 stops25h 35m

$492

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Tue 4/21

1:39 pm-10:45 pm

2 stops25h 06m

Lisbon Humberto Delgado

Thu 5/7

5:05 am-7:05 pm

2 stops22h 00m

$494

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Mon 4/13

3:15 pm-9:20 am

2 stops34h 05m

Lisbon Humberto Delgado

Mon 4/20

5:05 am-10:29 pm

2 stops25h 24m

$495

PortlandLisbon

PDX - LIS

PDXLIS

Portland

Tue 4/14

5:30 am-10:45 pm

2 stops33h 15m

Lisbon Humberto Delgado

Tue 4/21

11:25 am-6:34 pm

2 stops39h 09m

$496

PortlandFaro

PDX - FAO

PDXFAO

Portland

Wed 2/25

1:25 pm-8:25 am

1 stop35h 00m

Faro

Wed 3/4

6:55 pm-7:16 pm

2 stops32h 21m

$545

PortlandFaro

PDX - FAO

PDXFAO

Portland

Wed 2/25

7:00 am-8:25 am

2 stops41h 25m

Faro

Wed 3/4

6:55 pm-8:25 pm

2 stops33h 30m

$549

PortlandFaro

PDX - FAO

PDXFAO

Portland

Thu 3/5

3:52 pm-12:50 pm

2 stops36h 58m

Faro

Mon 3/9

7:05 pm-12:20 am

2 stops36h 15m

$941

PortlandFaro

PDX - FAO

PDXFAO

Portland

Thu 4/2

7:30 pm-7:05 pm

1 stop15h 35m

Faro

Sat 4/11

6:45 pm-10:42 pm

2 stops35h 57m

$1,002

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 $557, 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 $601.

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 $831 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 $749 on momondo.

Can stopping save me money on Portland to Portugal flights?

You could potentially save up to 15% 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 19m

Direct flights

None
The fastest flight from Portland to Portugal takes 15h 19m
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
7.1
611 reviews
Search Icelandair flights
KLMPriceFrom $492Free CancellationRating
7.7
1,451 reviews
Search KLM flights
DeltaPriceFrom $494Free CancellationRating
7.9
8,181 reviews
Search Delta flights
LufthansaPriceFrom $501Free CancellationRating
6.8
7,780 reviews
Search Lufthansa flights
British AirwaysPriceFrom $515Free CancellationRating
6.7
7,733 reviews
Search British Airways flights
American AirlinesPriceFrom $524Free CancellationRating
7.2
11,271 reviews
Search American Airlines flights
United AirlinesPriceFrom $537Free CancellationRating
7.4
9,281 reviews
Search United Airlines flights
Air CanadaPriceFrom $584Free CancellationRating
7.1
10,709 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.

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