Cheap flights from Portland to Porto from $368
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 5/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Discover deals from 900+ travel sites with momondo.
Save money when you book flights with momondo
Big names and deals
Big names and deals
Search 100s of travel sites to compare prices.Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customize your results.Trusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.Price Alerts
Price Alerts
Not ready to book? to track prices.Find the cheapest flights from Portland to Porto
Cheap round-trip flights
Cheap one-way flights
Cheap last minute flights
Lufthansa flights from Portland to Porto
Our best Lufthansa deals on Portland to Porto flight tickets
TAP AIR PORTUGAL flights from Portland to Porto
Our best TAP AIR PORTUGAL deals on Portland to Porto flight tickets
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?
What is the cheapest month to fly to Porto?
The month of February is, on average, the cheapest month to fly to Porto from Portland, with most prices found around $742. If you aren’t able to travel during the month of February, then book flights to Porto from Portland during November instead. Flights to Porto in November, while not as cheap as those in February, still average around $785.
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 Portland 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 Portland 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 Portland when booking 6 weeks ahead of your departure date. In general, you can expect to find flights to Porto for around $1,083 when searching 6 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Porto from Portland for as low as $902 on momondo.
What is the cheapest airline that flies from Portland to Porto?
Air Canada, United Airlines, and KLM are the most popular carriers operating from Portland to Porto
What airlines fly to Porto?
KLM, United Airlines and Delta 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 33% of people opting to fly with this airline when traveling to Porto. Keep in mind that there are 4 different airlines that fly to Porto on a routine basis, so you have a few additional options to choose from.
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
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 13h 06m, 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 April 2025, there are 4 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 33% of all bookings. The subsequent popular airlines are United Airlines at 33%, Delta at 28%, and Air Canada at 5%.
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 $658 | Free Cancellation | Rating 7.0 9,242 reviews | |||
| PriceFrom $704 | Free Cancellation | Rating 8.0 7,936 reviews | |||
| PriceFrom $733 | Free Cancellation | Rating 7.4 8,696 reviews | |||
| PriceFrom $773 | Free Cancellation | Rating 7.8 1,333 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.