$743 Cheap Flights from Pendleton (PDT) to Tri-Cities (TRI)

View $743 flight on Mon, Jul 21, 2025Opens in a new window

Popular airlines from Pendleton, OR (PDT-Eastern Oregon Regional) to Tri-Cities, TN (TRI-Tri-Cities Regional)

  • Plan, book, fly with confidence

  • trending down icon

    Be in the know

    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon

    Book smarter

    Save up to 30% on select hotels after you book a flight*
  • one key icon

    Earn twice

    Earn your airline miles on top of our OneKeyCash
    Learn about One Key

Cheap Flights from Pendleton to Tri-Cities (PDT-TRI)

Prices were available within the past 7 days and start at $743 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Flights from Pendleton (PDT) to Tri-Cities (TRI)
Origin airport
Eastern Oregon Regional
Destination airport
Tri-Cities Regional
Distance
1981 mi

Frequently asked questions

How much does a flight from Eastern Oregon Regional Airport (PDT) to Tri-Cities Regional Airport (TRI) cost?
Discover the latest flight deals from PDT to TRI by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from PDT to TRI?
The cheapest flights from PDT to TRI are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from PDT to TRI?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from PDT to TRI. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Eastern Oregon Regional Airport (PDT) to Tri-Cities Regional Airport (TRI)?
There are no daily nonstop flights available from Eastern Oregon Regional Airport (PDT) to Tri-Cities Regional Airport (TRI). But you can opt for flights with layovers. Filter your search on Expedia to include one or more stops, and you'll be on your way before you know it.
What day of the week has the most flights from PDT to TRI?
You'll typically find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can vary from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Eastern Oregon Regional Airport (PDT) to Tri-Cities Regional Airport (TRI)?
To reach Tri-Cities Regional Airport (TRI) without delays, pick a flight that leaves Eastern Oregon Regional Airport (PDT) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this time.**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 Eastern Oregon Regional Airport (PDT) to Tri-Cities Regional Airport (TRI) last-minute?
Booking your flight from PDT to TRI just before your trip is generally more expensive. But if there's some wiggle room with your travel dates and times, you could land a cheap last-minute fare.
Is it cheaper to book a PDT to TRI flight and hotel package?
You can save money by securing a PDT to TRI 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 it all in one convenient place. Once you've selected your ideal flights and accommodations, consider adding extras including activities, car rentals and tours.
Can I cancel or change the date of my flight from Eastern Oregon Regional Airport (PDT) to Tri-Cities Regional Airport (TRI)?
If you booked your PDT to TRI flight in the last 24 hours, you may be able to modify or cancel it at no cost. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal for more information.

Explore a world of travel with Expedia