Cheap Flights from Portland (PDX) to Tainan (TNN)

Popular airlines from Portland International Airport (PDX) to Tainan (TNN)

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Alternative airports near Tainan

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Kaohsiung Intl. KHH. Cheapest option available. Average driving time to city center is 1 hour 6 minutes. Flights from $1,171
KHH
Kaohsiung Intl.
Cheapest
Average driving time to city center1 h 6 min
Flights from $1,171
Flights from Portland (PDX) to Tainan (TNN)
Origin airport
Portland Intl.
Destination airport
Tainan
Distance
6281 mi

Portland to Tainan Flights

The cheapest times to fly from Portland to Tainan

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

 

The best time to book a flight from Portland to Tainan

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

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 Tainan 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 Tainan 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 Tainan 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 Tainan Airport (TNN) cost?
Lock in a cheap one-way flight or cheap return flight from Portland Intl. Airport (PDX) to Tainan Airport (TNN) 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 Tainan Airport (TNN)?
is the least expensive month to fly from PDX to TNN. Traveling during quieter months is often the key to finding a great deal.
What is the cheapest airline that flies from Portland Intl. Airport (PDX) to Tainan Airport (TNN)?
To find the cheapest airline that'll fly you from PDX to TNN, use Expedia's filter tool. Tailor your search based on your travel needs, such as preferred carriers and seat class. You can then sort your results by "Price (lowest to highest)" to see the cheapest fares upfront.
How many flights per day from Portland Intl. Airport (PDX) to Tainan Airport (TNN)?
Nonstop flights from Portland Intl. Airport (PDX) to Tainan Airport (TNN) 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 dates and click on either "1 Stop" or "2+ Stops."
What day of the week has the most flights from PDX to TNN?
Generally you'll find the most flight options available on a Friday. Tuesdays are often the quietest.* But this can vary based on the season, carrier and other factors.*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 Tainan Airport (TNN)?
To avoid possible delays on the Portland Intl. Airport (PDX) to Tainan Airport (TNN) route, fly before 3 PM. Flights after this time have a 22% higher chance of being 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 Tainan Airport (TNN) last-minute?
Booking your ticket from PDX to TNN just before your journey is generally more expensive. However, if there's some wiggle room with your itinerary, you could snag a cheap last-minute fare.
Is it cheaper to book a PDX to TNN flight and hotel package?
You can save money by booking a PDX to TNN flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's simple to manage everything in one place. After choosing your ideal accommodations and flights, consider other add-ons like tours, car rentals and activities.
Can I cancel or change the date of my flight from Portland Intl. Airport (PDX) to Tainan Airport (TNN)?
Typically, you're able to reschedule or cancel your PDX to TNN flight. However, there may be additional charges, especially if your booking was made more than 24 hours ago. Double-check your itinerary for the airline's rules and fees on flight changes, or if you want further details, go to our Customer Service portal.

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