Cheap flights from Portland to Porto from $335
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 Porto departing on 3/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Fly from
Fly to
Route
Depart
Return
PortlandPorto
PDX Portland - OPO Porto
PDXOPO
Portland
Mon 2/22
1:20 pm-3:25 pm
1 stop18h 05m
Porto
Fri 2/26
5:00 am-11:20 am
1 stop14h 20m
PortlandPorto
PDX Portland - OPO Porto
PDXOPO
Portland
Tue 3/2
7:00 am-10:35 am
2 stops19h 35m
Porto
Fri 3/5
5:00 am-11:20 am
1 stop14h 20m
PortlandPorto
PDX Portland - OPO Porto
PDXOPO
Portland
Mon 2/22
1:20 pm-10:30 pm
1 stop25h 10m
Porto
Tue 3/2
11:15 am-11:20 am
1 stop32h 05m
PortlandPorto
PDX Portland - OPO Porto
PDXOPO
Portland
Sun 2/21
1:20 pm-10:30 pm
1 stop25h 10m
Porto
Wed 2/24
5:00 am-11:20 am
1 stop14h 20m
PortlandPorto
PDX Portland - OPO Porto
PDXOPO
Portland
Sun 2/21
7:00 am-10:35 am
2 stops19h 35m
Porto
Fri 2/26
5:00 am-11:20 am
1 stop14h 20m
PortlandPorto
PDX Portland - OPO Porto
PDXOPO
Portland
Tue 3/2
10:45 am-9:30 am
2 stops14h 45m
Porto
Fri 3/5
6:00 am-8:33 pm
2 stops22h 33m
PortlandPorto
PDX Portland - OPO Porto
PDXOPO
Portland
Sun 2/21
7:00 am-9:30 am
2 stops18h 30m
Porto
Thu 2/25
6:00 am-8:49 pm
2 stops22h 49m
PortlandPorto
PDX Portland - OPO Porto
PDXOPO
Portland
Sat 2/20
2:30 pm-11:40 am
2 stops37h 10m
Porto
Wed 2/24
6:00 am-7:17 pm
2 stops21h 17m
PortlandPorto
PDX Portland - OPO Porto
PDXOPO
Portland
Sun 11/8
7:00 am-8:15 am
1 stop17h 15m
Porto
Tue 11/24
4:10 pm-11:40 am
1 stop27h 30m
PortlandPorto
PDX Portland - OPO Porto
PDXOPO
Portland
Sun 2/21
1:20 pm-3:25 pm
1 stop18h 05m
Porto
Sun 2/28
5:00 am-11:20 am
1 stop14h 20m
See travel insights to Porto from
How to get the cheapest flight ticket from Portland 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 typical price of a round-trip flight between Portland and Porto?
Prices are currently low for flights on this route.
Typical prices usually range from $965 to $1,250.The lowest price recently found on this route was $718.
What is the cheapest month to fly to Porto?
The month of January is, on average, the cheapest month to fly to Porto from Portland, with most prices found around $484. If you aren’t able to travel during the month of January, then book flights to Porto from Portland during December instead. Flights to Porto in December, while not as cheap as those in January, still average around $502.
Can stopping save me money on Portland to Porto flights?
You could potentially save up to 13% on your flight if you consider stops on a Portland to Porto flight.
What is the cheapest airline that flies from Portland to Porto?
United Airlines and Air France are the most popular carriers operating from Portland to Porto
What airlines fly to Porto?
KLM, Delta and United Airlines are the top three most popular airlines that fly to Porto from Portland according to our data. KLM is the first choice among our users, with 40% of people opting to fly with this airline when traveling to Porto. Keep in mind that there are 3 different airlines that fly to Porto on a routine basis, so you have a few additional options to choose from.
Which airport is the most popular layover for flights between Portland and Porto?
Amsterdam (AMS) was the most common stop: 83% of momondo users choosing 1-stop flights on this route connected there.
Which layover airport offers the lowest fares from Portland to Porto?
Flights via New York (JFK) offer the lowest average round-trip price of $1,188.
Which layover airport has the shortest travel time from Portland to Porto?
Flights connecting via Amsterdam (AMS) have the shortest average one-way travel time: 13h 41m.
Which layover airport has the shortest connection time from Portland to Porto?
Amsterdam (AMS) has the shortest average layover time for this route: 1h 38m.
When to book flights from Portland to Porto
Cheap Portland to Porto (PDX to OPO) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Portland to Porto
Frequently asked questions about flying from Portland to Porto
How far is Portland to Porto by plane?
A flight from Portland to Porto will travel around 5195.4 mi. Flights usually cover this in 18h 30m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from Portland Airport to Porto Airport?
Prices for flights from Portland Airport to Porto Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Portland Airport to Porto Airport?
As of October 2026, there are 3 operators available to choose from for flights from Portland Airport to Porto Airport.
How old do you have to be to fly from Portland Airport to Porto Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Portland Airport to Porto Airport.
What documentation or ID do you need to fly to Porto Airport?
The travel and health documents required for your trip to Porto Airport 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 Porto Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular airline from Portland to Porto?
momondo data reveals that the most frequently booked airline on the route from Portland to Porto is KLM, representing 40% of all bookings. The subsequent popular airlines are Delta at 37% and United Airlines at 23%.
Best airlines flying from Portland to Porto
Compare and see reviews for airlines that fly from Portland to Porto with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $494 | Free Cancellation | Rating 7.8 8,653 reviews | |||
| PriceFrom $498 | Free Cancellation | Rating 7.8 1,586 reviews | |||
| PriceFrom $502 | Free Cancellation | Rating 7.4 10,350 reviews |
Traveling to a place near Porto?
Book flights to Porto if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from Portland to Porto?
momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Portland to Porto. Millions of users trust and use momondo every year so you are in good hands.
Can I find flights from Portland to Porto with flexible booking policies on momondo?
momondo does allow users to show only those flights to Porto from Portland which offer a flexible booking policy as well as other useful filters and features.
How can momondo help me find flights from Portland to Porto?
momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Portland to Porto.
I’m not ready to book a flight from Portland to Porto right now. Can momondo alert me if prices change?
Yes momondo offers price alerts on flights to Porto from Portland. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.