Cheap Flights from Tri-Cities (TRI) to Portland (PDX)

The lowest price advertised for a round-trip flight from Tri-Cities Regional Airport (TRI) to PDX is . But you better get moving. This price is based on fares available within the last 7 days on Expedia for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

We understand that your situation can change unexpectedly, so we've made it as easy as possible for you to cancel your flight online. Just visit the Customer Service Portal and follow the instructions.

Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for TRI to Portland Intl. Airport (PDX) flights, you'll see a "no change fees" filter for you to select.

It's around 3,500 kilometres from TRI to PDX Airport, so you'll be strapped into your seat for a while. Keep yourself occupied by packing things like crossword puzzles or a good old-fashioned book.

Right now, no airlines offer flights directly from Tri-Cities Airport to PDX Airport. You'll have to book a flight with one or more stops. To score the best price and connections, lock in your fare ahead of time.

Late planners can sometimes find a bargain, with some of the cheapest airfares from Tri-Cities Regional Airport (TRI) to PDX Airport surfacing a few weeks before the departure date. If you'd rather plan ahead, Expedia compares and updates the best flight deals continuously — as early as a year in advance in some cases. It does depend on the carrier though, as not all airlines publish prices that far in advance.