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Cheap flights from Oregon to Porto from $299

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Oregon to Porto departing on 8/25. 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
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Oregon to Porto

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
10:00 am - 9:30 am
PDX
-
OPO
15h 30m
1 stop
United Airlines Logo
6:00 am - 11:12 pm
OPO
-
PDX
25h 12m
2 stops
$741United Airlines
Tue, Dec 1 - Tue, Dec 15
KLM Logo
10:05 pm - 9:05 am
PDX
-
OPO
27h 00m
1 stop
KLM Logo
9:55 am - 11:20 am
OPO
-
PDX
33h 25m
1 stop
$745KLM
Tue, Dec 1 - Tue, Dec 15
Lufthansa Logo
7:05 pm - 11:55 pm
EUG
-
OPO
20h 50m
2 stops
Lufthansa Logo
6:00 am - 9:44 pm
OPO
-
EUG
23h 44m
2 stops
$761Lufthansa
Thu, Nov 12 - Wed, Nov 18
Delta Logo
6:15 am - 10:35 am
EUG
-
OPO
20h 20m
2 stops
Delta Logo
5:00 am - 11:47 pm
OPO
-
EUG
26h 47m
2 stops
$772Delta
Thu, Nov 12 - Wed, Nov 18
Delta Logo
6:15 am - 10:35 am
EUG
-
OPO
20h 20m
2 stops
Delta Logo
5:00 am - 11:47 pm
OPO
-
EUG
26h 47m
2 stops
$773Delta
Thu, Nov 12 - Wed, Nov 18
Multiple Airlines Logo
7:00 am - 10:30 am
PDX
-
OPO
19h 30m
1 stop
Multiple Airlines Logo
5:00 am - 11:10 am
OPO
-
PDX
14h 10m
1 stop
$783Multiple Airlines
Mon, Sep 28 - Fri, Oct 9
Multiple Airlines Logo
9:46 am - 10:30 am
PDX
-
OPO
16h 44m
2 stops
Multiple Airlines Logo
5:00 am - 11:10 am
OPO
-
PDX
14h 10m
1 stop
$787Multiple Airlines
Mon, Sep 28 - Fri, Oct 9
Air Canada Logo
7:45 pm - 7:00 am
PDX
-
OPO
27h 15m
2 stops
Air Canada Logo
11:50 am - 6:51 pm
OPO
-
PDX
39h 01m
2 stops
$788Air Canada
Tue, Sep 29 - Thu, Oct 8
Air Canada Logo
3:30 pm - 7:00 am
PDX
-
OPO
55h 30m
2 stops
Air Canada Logo
11:20 am - 3:56 pm
OPO
-
PDX
36h 36m
2 stops
$789Air Canada
Mon, Sep 21 - Wed, Sep 30
Lufthansa Logo
1:59 pm - 11:25 pm
EUG
-
OPO
25h 26m
2 stops
Lufthansa Logo
6:20 am - 9:21 pm
OPO
-
EUG
23h 01m
2 stops
$1,181Lufthansa
Fri, Jul 10 - Tue, Jul 14

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KLM flights from Oregon to Porto

Our best KLM deals on Oregon to Porto flight tickets
KLM
Sep 26
PDX10:00 pmPortland
28h 25m
1 stop
OPO10:25 amPorto
Oct 16
OPO12:45 pmPorto
16h 42m
1 stop
PDX9:27 pmPortland
$816
KLM
Sep 26
PDX10:00 pmPortland
28h 25m
1 stop
OPO10:25 amPorto
Oct 16
OPO12:45 pmPorto
16h 42m
1 stop
PDX9:27 pmPortland
$817
KLM
Oct 23
PDX7:00 amPortland
19h 30m
1 stop
OPO10:30 amPorto
Nov 2
OPO5:00 amPorto
14h 20m
1 stop
PDX11:20 amPortland
$823

United Airlines flights from Oregon to Porto

Our best United Airlines deals on Oregon to Porto flight tickets
United Airlines
Dec 1
PDX10:00 amPortland
15h 30m
1 stop
OPO9:30 amPorto
Dec 15
OPO6:00 amPorto
25h 12m
2 stops
PDX11:12 pmPortland
$741
United Airlines
Dec 1
PDX5:15 amPortland
20h 15m
2 stops
OPO9:30 amPorto
Dec 15
OPO6:00 amPorto
22h 49m
2 stops
PDX8:49 pmPortland
$745
United Airlines
Nov 12
EUG5:00 amEugene
20h 30m
3 stops
OPO9:30 amPorto
Nov 18
OPO12:35 pmPorto
30h 58m
2 stops
EUG11:33 amEugene
$777

momondo Fare Finder

 
Customize your flight search to find flights from Oregon to Porto 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 June 25, 2026.
Use the filters below to find and compare flights from Oregon to Porto that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandPorto

PDX - OPO

PDXOPO

Portland

Tue 12/1

10:00 am-9:30 am

1 stop15h 30m

Porto

Tue 12/15

6:00 am-11:12 pm

2 stops25h 12m

$741

PortlandPorto

PDX - OPO

PDXOPO

Portland

Tue 12/1

10:05 pm-9:05 am

1 stop27h 00m

Porto

Tue 12/15

9:55 am-11:20 am

1 stop33h 25m

$745

EugenePorto

EUG - OPO

EUGOPO

Eugene

Thu 11/12

7:05 pm-11:55 pm

2 stops20h 50m

Porto

Wed 11/18

6:00 am-9:44 pm

2 stops23h 44m

$761

EugenePorto

EUG - OPO

EUGOPO

Eugene

Thu 11/12

6:15 am-10:35 am

2 stops20h 20m

Porto

Wed 11/18

5:00 am-11:47 pm

2 stops26h 47m

$772

EugenePorto

EUG - OPO

EUGOPO

Eugene

Thu 11/12

6:15 am-10:35 am

2 stops20h 20m

Porto

Wed 11/18

5:00 am-11:47 pm

2 stops26h 47m

$773

PortlandPorto

PDX - OPO

PDXOPO

Portland

Mon 9/28

7:00 am-10:30 am

1 stop19h 30m

Porto

Fri 10/9

5:00 am-11:10 am

1 stop14h 10m

$783
Quickest round-trip

PortlandPorto

PDX - OPO

PDXOPO

Portland

Mon 9/28

9:46 am-10:30 am

2 stops16h 44m

Porto

Fri 10/9

5:00 am-11:10 am

1 stop14h 10m

$787

PortlandPorto

PDX - OPO

PDXOPO

Portland

Tue 9/29

7:45 pm-7:00 am

2 stops27h 15m

Porto

Thu 10/8

11:50 am-6:51 pm

2 stops39h 01m

$788

PortlandPorto

PDX - OPO

PDXOPO

Portland

Mon 9/21

3:30 pm-7:00 am

2 stops55h 30m

Porto

Wed 9/30

11:20 am-3:56 pm

2 stops36h 36m

$789

EugenePorto

EUG - OPO

EUGOPO

Eugene

Fri 7/10

1:59 pm-11:25 pm

2 stops25h 26m

Porto

Tue 7/14

6:20 am-9:21 pm

2 stops23h 01m

$1,181

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 Porto from

How to get the cheapest flight ticket from Oregon to Porto

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 Porto?

The month of January is, on average, the cheapest month to fly to Porto from Oregon, with most prices found around $468. If you aren’t able to travel during the month of January, then book flights to Porto from Oregon during November instead. Flights to Porto in November, while not as cheap as those in January, still average around $479.

Can stopping save me money on Oregon to Porto flights?

You could potentially save up to 45% on your flight if you consider stops on a Oregon to Porto flight.

Cheap Oregon to Porto flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Oregon to Porto

Fastest flight time

14h 49m

Direct flights

None
The fastest flight from Oregon to Porto takes 14h 49m
There are no direct flights from Oregon to Porto. There are no popular flight routes from Oregon to Porto.
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Frequently asked questions about flying from Oregon to Porto

  • When did momondo last update prices for flights from Oregon to Porto Airport?

    Prices for flights from Oregon to Porto Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Oregon to Porto Airport?

  • How old do you have to be to fly from Oregon to Porto Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Oregon to Porto Airport.

  • What documentation or ID do you need to fly to Porto Airport?

    The travel and health documents you'll need for your trip to Porto Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Porto Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Oregon to Porto

Compare and see reviews for airlines that fly from Oregon to Porto with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $494Free CancellationRating
7.8
8,440 reviews
Search Delta flights
KLMPriceFrom $498Free CancellationRating
7.8
1,530 reviews
Search KLM flights
United AirlinesPriceFrom $502Free CancellationRating
7.4
9,889 reviews
Search United Airlines flights

Traveling to a place near Porto?

Book flights to Porto if you plan to visit one of these locations
Vila Nova de Gaia
Coimbra
Braga
Aveiro
Matosinhos
Lamego
Esposende
Chaves
Pinhao
Guimarães
Arcos de Valdevez
Espinho
Ponte de Lima
Viseu
Curia
Mesao Frio
Penafiel
Mira
Baiao

Why use momondo?

Why should I use momondo to find a flight deal from Oregon to Porto?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Oregon to Porto. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Oregon to Porto with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Oregon to Porto flights to just show those with flexible booking policies.

How can momondo help me find flights from Oregon to Porto?

Once you have performed a search for Oregon to Porto flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Oregon to Porto right now. Can momondo alert me if prices change?

Price alerts on flights to Porto from Oregon are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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