$521 Cheap Flights from Portland (PDX) to Iasi (IAS)

View $521 flight on Mon, Oct 13, 2025Opens in a new window

Popular airlines from Portland International Airport (PDX) to Iasi (IAS)

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Cheap Flights from Portland to Iasi (PDX-IAS)

Prices were available within the past 7 days and start at $521 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Flights from Portland (PDX) to Iasi (IAS)
Origin airport
Portland Intl.
Destination airport
Iasi
Distance
5777 mi

Portland to Iasi Flights

The cheapest times to fly from Portland to Iasi

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Portland to Iasi are during the month of . You can find some of the cheapest flights from Portland to Iasi with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Portland to Iasi

Sunday is one of the best days to book for cheap flights from Portland to Iasi: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Portland to Iasi

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Portland to Iasi in 2025. You can also book with separate airlines for your outbound and return journeys, from $521 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Portland to Iasi flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Portland to Iasi airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Portland Intl. Airport (PDX) to Iasi Airport (IAS) cost?
Lock in a cheap one-way flight from $521 or cheap return flight from Portland Intl. Airport (PDX) to Iasi Airport (IAS) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Portland Intl. Airport (PDX) to Iasi Airport (IAS)?
Planning your trip for can help you save, as it's the cheapest month for flights between PDX and IAS. You'll usually find the lowest fares during the off-season.
What is the cheapest airline that flies from Portland Intl. Airport (PDX) to Iasi Airport (IAS)?
Expedia's filter tool lets you easily compare travel time, airlines and fares all in one place. Tailor the search to your trip, then sort by "Price (lowest to highest)" to find the carrier with the cheapest PDX to IAS flight.
How many flights per day from Portland Intl. Airport (PDX) to Iasi Airport (IAS)?
Nonstop flights from Portland Intl. Airport (PDX) to Iasi Airport (IAS) aren't available daily, so you'll need to take a flight with a layover. Explore your options with Expedia's filters. Enter your travel details and pick either "1 Stop" or "2+ Stops."
What day of the week has the most flights from PDX to IAS?
Friday is typically the busiest day for flights, while Tuesday tends to be the quietest.* Keep in mind that flight schedules can vary depending on a number of factors, including the carrier and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Portland Intl. Airport (PDX) to Iasi Airport (IAS)?
To avoid possible delays on the Portland Intl. Airport (PDX) to Iasi Airport (IAS) route, aim to travel before 3 PM. Flights after this time are 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Portland Intl. Airport (PDX) to Iasi Airport (IAS) last-minute?
Last-minute bookings from PDX to IAS are typically more expensive. To secure the best rates, start looking for flights early. That being said, if you're flexible with your travel plans, it's possible to find a cheap ticket just before your departure.
Is it cheaper to book a PDX to IAS flight and hotel package?
Securing a PDX to IAS flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your trip in one place. Pick from our impressive range of stays and then add car rentals, flights and activities to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Portland Intl. Airport (PDX) to Iasi Airport (IAS)?
If you reserved your PDX to IAS flight within the last 24 hours, you may be able to modify or cancel it without fees. Depending on the airline and the type of ticket you purchased, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

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*Available to One Key members.