Cheap Flights from Portland (PDX) to Siena (SAY)

Popular airlines from Portland International Airport (PDX) to Ampugnano Airport (SAY)

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Frequently asked questions

How much does a flight from Portland Intl. Airport (PDX) to Siena (SAY-Ampugnano) cost?
Lock in a cheap one-way flight or cheap return flight from Portland Intl. Airport (PDX) to Siena (SAY-Ampugnano) 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 Siena (SAY-Ampugnano)?
Planning your trip for can help you save, as it's the cheapest month for flights between PDX and SAY. You'll typically find the lowest fares during off-peak months.
What is the cheapest airline that flies from Portland Intl. Airport (PDX) to Siena (SAY-Ampugnano)?
To find the cheapest airline that'll fly you from PDX to SAY, use Expedia's filter tool. Tailor your search based on your travel style, such as preferred carriers and ideal departure window. You can then sort your results by "Price (lowest to highest)" to discover the cheapest flight right away.
How many flights per day from Portland Intl. Airport (PDX) to Siena (SAY-Ampugnano)?
You'll need to take a flight with a layover if you're traveling from Portland Intl. Airport (PDX) to Siena (SAY-Ampugnano). Direct flights don't operate daily on this route. However, simply filter your search to include one or two stops to discover an option that works for you.
What day of the week has the most flights from PDX to SAY?
Friday is typically the busiest day for flights, while Tuesday is often the quietest.* Keep in mind that flight schedules can vary based on a number of factors, such as 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 Siena (SAY-Ampugnano)?
To arrive at Siena (SAY-Ampugnano) without delays, pick a flight that leaves from Portland Intl. Airport (PDX) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this hour.**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 Siena (SAY-Ampugnano) last-minute?
Last-minute fares from PDX to SAY are generally more expensive. To lock in the lowest rates, start searching for flights ahead of time. That being said, if you can play around with your travel dates, it's possible to land a cheap fare just before your departure.
Can I cancel or change the date of my flight from Portland Intl. Airport (PDX) to Siena (SAY-Ampugnano)?
If you reserved your PDX to SAY flight within the last 24 hours, you may be able to cancel or modify it at no cost. Depending on the airline and the ticket type you purchased, additional charges may apply for changes beyond this timeframe. 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.

Travel information

Origin airport
Portland Intl.
Destination airport
Ampugnano
Distance
5676 mi

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Portland to Siena Flights

The cheapest times to fly from Portland to Siena

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 Siena are during the month of . You can find some of the cheapest flights from Portland to Siena with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Portland to Siena

Sunday is one of the best days to book for cheap flights from Portland to Siena: 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 Siena

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 Siena in 2025. You can also book with separate airlines for your outbound and return journeys, from 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 Siena 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 Siena 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.

 

Portland to Siena Flights

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*Available to One Key members.