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Cheap flights from Oregon to Porto from $475

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 12/28. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Oregon to Porto

Cheap round-trip flights

Delta Logo
12:55 am - 10:30 amPDX-OPO
25h 35m2 stops
Delta Logo
11:15 am - 11:25 amOPO-PDX
32h 10m1 stop
$557Delta
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Sun, Jan 18 - Tue, Feb 10
United Airlines Logo
6:00 am - 9:30 amEUG-OPO
19h 30m2 stops
United Airlines Logo
6:00 am - 9:38 pmOPO-EUG
22h 38m2 stops
$565United Airlines
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Tue, Mar 3 - Tue, Mar 10
KLM Logo
1:25 pm - 10:30 amPDX-OPO
13h 05m1 stop
KLM Logo
11:15 am - 12:25 pmOPO-PDX
32h 10m1 stop
$595KLM
Find Deal
Sun, Mar 1 - Thu, Mar 12
Multiple Airlines Logo
7:40 pm - 6:15 pmPDX-OPO
38h 35m2 stops
Multiple Airlines Logo
4:15 pm - 12:26 amOPO-PDX
40h 11m2 stops
$596Multiple Airlines
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Sat, Oct 18 - Wed, Nov 5
Multiple Airlines Logo
9:55 am - 3:45 pmPDX-OPO
21h 50m2 stops
Multiple Airlines Logo
6:00 am - 11:01 pmOPO-PDX
25h 01m2 stops
$600Multiple Airlines
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Tue, Oct 14 - Tue, Oct 21
Lufthansa Logo
2:02 pm - 11:40 pmEUG-OPO
25h 38m2 stops
Lufthansa Logo
1:45 pm - 9:38 pmOPO-EUG
38h 53m2 stops
$601Lufthansa
Find Deal
Wed, Mar 4 - Mon, Mar 16
Lufthansa Logo
3:50 pm - 11:40 pmPDX-OPO
23h 50m2 stops
Lufthansa Logo
6:15 am - 12:19 amOPO-PDX
25h 04m2 stops
$601Lufthansa
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Wed, Mar 4 - Fri, Mar 13
KLM Logo
5:45 am - 10:30 amEUG-OPO
20h 45m2 stops
KLM Logo
11:15 am - 4:47 pmOPO-EUG
37h 32m2 stops
$618KLM
Find Deal
Sun, Nov 16 - Sat, Dec 6
Air Canada Logo
3:15 pm - 11:40 amPDX-OPO
36h 25m2 stops
Air Canada Logo
6:15 am - 6:30 pmOPO-PDX
19h 15m2 stops
$636Air Canada
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Thu, Feb 26 - Fri, Mar 13
Air Canada Logo
7:00 pm - 11:40 amPDX-OPO
32h 40m2 stops
Air Canada Logo
6:15 am - 9:15 amOPO-PDX
35h 00m2 stops
$683Air Canada
Find Deal
Wed, Nov 12 - Sun, Nov 16

United Airlines flights from Oregon to Porto

Our best United Airlines deals on Oregon to Porto flight tickets
United Airlines
Mar 3
EUG6:00 amEugene
19h 30m
2 stops
OPO9:30 amPorto
Mar 10
OPO6:00 amPorto
22h 38m
2 stops
EUG9:38 pmEugene
$565
Find similar
United Airlines
Feb 28
PDX11:55 pmPortland
25h 35m
2 stops
OPO9:30 amPorto
Mar 11
OPO12:35 pmPorto
28h 40m
3 stops
PDX10:15 amPortland
$568
Find similar
United Airlines
Mar 2
EUG2:02 pmEugene
35h 28m
2 stops
OPO9:30 amPorto
Mar 11
OPO6:00 amPorto
22h 38m
2 stops
EUG9:38 pmEugene
$576
Find similar

Lufthansa flights from Oregon to Porto

Our best Lufthansa deals on Oregon to Porto flight tickets
Lufthansa
Mar 4
EUG2:02 pmEugene
25h 38m
2 stops
OPO11:40 pmPorto
Mar 16
OPO1:45 pmPorto
38h 53m
2 stops
EUG9:38 pmEugene
$601
Find similar
Lufthansa
Mar 4
EUG2:02 pmEugene
25h 38m
2 stops
OPO11:40 pmPorto
Mar 16
OPO1:45 pmPorto
38h 53m
2 stops
EUG9:38 pmEugene
$602
Find similar
Lufthansa
Mar 2
EUG1:15 pmEugene
25h 10m
2 stops
OPO10:25 pmPorto
Mar 16
OPO1:45 pmPorto
38h 53m
2 stops
EUG9:38 pmEugene
$605
Find similar

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 September 18, 2025.
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

PortlandPorto

PDX - OPO

PDXOPO

Portland

Sun 1/18

12:55 am-10:30 am

2 stops25h 35m

Porto

Tue 2/10

11:15 am-11:25 am

1 stop32h 10m

$557

EugenePorto

EUG - OPO

EUGOPO

Eugene

Tue 3/3

6:00 am-9:30 am

2 stops19h 30m

Porto

Tue 3/10

6:00 am-9:38 pm

2 stops22h 38m

$565

PortlandPorto

PDX - OPO

PDXOPO

Portland

Sun 3/1

1:25 pm-10:30 am

1 stop13h 05m

Porto

Thu 3/12

11:15 am-12:25 pm

1 stop32h 10m

$595

PortlandPorto

PDX - OPO

PDXOPO

Portland

Sat 10/18

7:40 pm-6:15 pm

2 stops38h 35m

Porto

Wed 11/5

4:15 pm-12:26 am

2 stops40h 11m

$596

PortlandPorto

PDX - OPO

PDXOPO

Portland

Tue 10/14

9:55 am-3:45 pm

2 stops21h 50m

Porto

Tue 10/21

6:00 am-11:01 pm

2 stops25h 01m

$600

EugenePorto

EUG - OPO

EUGOPO

Eugene

Wed 3/4

2:02 pm-11:40 pm

2 stops25h 38m

Porto

Mon 3/16

1:45 pm-9:38 pm

2 stops38h 53m

$601

PortlandPorto

PDX - OPO

PDXOPO

Portland

Wed 3/4

3:50 pm-11:40 pm

2 stops23h 50m

Porto

Fri 3/13

6:15 am-12:19 am

2 stops25h 04m

$601

EugenePorto

EUG - OPO

EUGOPO

Eugene

Sun 11/16

5:45 am-10:30 am

2 stops20h 45m

Porto

Sat 12/6

11:15 am-4:47 pm

2 stops37h 32m

$618

PortlandPorto

PDX - OPO

PDXOPO

Portland

Thu 2/26

3:15 pm-11:40 am

2 stops36h 25m

Porto

Fri 3/13

6:15 am-6:30 pm

2 stops19h 15m

$636

PortlandPorto

PDX - OPO

PDXOPO

Portland

Wed 11/12

7:00 pm-11:40 am

2 stops32h 40m

Porto

Sun 11/16

6:15 am-9:15 am

2 stops35h 00m

$683

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 14 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 November is, on average, the cheapest month to fly to Porto from Oregon, with most prices found around $752. If you aren’t able to travel during the month of November, then book flights to Porto from Oregon during February instead. Flights to Porto in February, while not as cheap as those in November, still average around $760.

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

The cheapest day to depart on your flight to Porto is on a Monday when prices can be found for as low as $1,088. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Wednesday because tickets tend to average around $1,428. These prices are subject to change though, so be sure to set up a Price Alert for flights to Porto.

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

At noon is the cheapest time of day to fly from Oregon to Porto when you can find flight prices for as low as $1,088. Flying to Porto at noon is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $1,278 on average. Flights to Porto from Oregon in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

How far in advance should I book a flight to Porto?

You are more likely to see cheaper flights to Porto from Oregon when booking weeks ahead of your departure date. In general, you can expect to find flights to Porto for around $1,031 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Porto from Oregon for as low as $709 on momondo.

Can stopping save me money on Oregon to Porto flights?

You could potentially save up to 12% 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

Direct flights

None
There are no direct flights from Oregon to Porto. There are no popular flight routes from Oregon to Porto.
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  • 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
United AirlinesPriceFrom $647Free CancellationRating
7.4
8,926 reviews
Search United Airlines flights
DeltaPriceFrom $709Free CancellationRating
7.9
7,964 reviews
Search Delta flights
KLMPriceFrom $731Free CancellationRating
7.8
1,386 reviews
Search KLM flights

Traveling to a place near Porto?

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

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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