$207 Cheap Flights from Tri-Cities (TRI) to Portland (PDX)

View $207 flight on Thu, Nov 27, 2025Opens in a new window

Popular airlines from Tri-Cities, TN (TRI-Tri-Cities Regional) to Portland International Airport (PDX)

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

Prices were available within the past 7 days and start at $207 for one-way flights and $419 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Mon, Nov 10 - Mon, Nov 17
TRI
Tri-Cities
PDX
Portland
$419 Roundtrip, found 5 days ago
$419
Roundtrip
found 5 days ago
Select American Airlines flight, departing Mon, Nov 10 from Tri-Cities to Portland, returning Mon, Nov 17, priced at $419 found 5 days ago
Delta
Sat, Dec 6 - Tue, Dec 16
TRI
Tri-Cities
PDX
Portland
$425 Roundtrip, found 17 hours ago
$425
Roundtrip
found 17 hours ago
Select Delta flight, departing Sat, Dec 6 from Tri-Cities to Portland, returning Tue, Dec 16, priced at $425 found 17 hours ago
Delta
Mon, Nov 10 - Mon, Nov 17
TRI
Tri-Cities
PDX
Portland
$429 Roundtrip, found 5 days ago
$429
Roundtrip
found 5 days ago
Select Delta flight, departing Mon, Nov 10 from Tri-Cities to Portland, returning Mon, Nov 17, priced at $429 found 5 days ago
Delta
Sun, Dec 7 - Fri, Dec 12
TRI
Tri-Cities
PDX
Portland
$447 Roundtrip, found 5 days ago
$447
Roundtrip
found 5 days ago
Select Delta flight, departing Sun, Dec 7 from Tri-Cities to Portland, returning Fri, Dec 12, priced at $447 found 5 days ago
Delta
Wed, Dec 3 - Tue, Dec 16
TRI
Tri-Cities
PDX
Portland
$456 Roundtrip, found 17 hours ago
$456
Roundtrip
found 17 hours ago
Select Delta flight, departing Wed, Dec 3 from Tri-Cities to Portland, returning Tue, Dec 16, priced at $456 found 17 hours ago
Delta
Thu, Dec 4 - Tue, Dec 16
TRI
Tri-Cities
PDX
Portland
$461 Roundtrip, found 17 hours ago
$461
Roundtrip
found 17 hours ago
Select Delta flight, departing Thu, Dec 4 from Tri-Cities to Portland, returning Tue, Dec 16, priced at $461 found 17 hours ago
American Airlines
Wed, Dec 24 - Wed, Jan 7
TRI
Tri-Cities
PDX
Portland
$463 Roundtrip, found 3 days ago
$463
Roundtrip
found 3 days ago
Select American Airlines flight, departing Wed, Dec 24 from Tri-Cities to Portland, returning Wed, Jan 7, priced at $463 found 3 days ago
Delta
Sun, Jan 4 - Mon, Feb 2
TRI
Tri-Cities
PDX
Portland
$478 Roundtrip, found 6 days ago
$478
Roundtrip
found 6 days ago
Select Delta flight, departing Sun, Jan 4 from Tri-Cities to Portland, returning Mon, Feb 2, priced at $478 found 6 days ago
American Airlines
Mon, Nov 10 - Mon, Nov 17
TRI
Tri-Cities
PDX
Portland
$484 Roundtrip, found 5 days ago
$484
Roundtrip
found 5 days ago
Select American Airlines flight, departing Mon, Nov 10 from Tri-Cities to Portland, returning Mon, Nov 17, priced at $484 found 5 days ago
Delta
Fri, Nov 21 - Wed, Dec 3
TRI
Tri-Cities
PDX
Portland
$486 Roundtrip, found 1 day ago
$486
Roundtrip
found 1 day ago
Select Delta flight, departing Fri, Nov 21 from Tri-Cities to Portland, returning Wed, Dec 3, priced at $486 found 1 day ago

Alternative airports near Portland

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

Select flight to Portland Intl. PDX. Cheapest and Closest option available. Average driving time to city center is 17 minutes. Flights from $506
PDX
Portland Intl.
CheapestClosest
Average driving time to city center17 min
Flights from $506
Flights from Tri-Cities (TRI) to Portland (PDX)
Origin airport
Tri-Cities Regional
Destination airport
Portland Intl.
Airlines serving
American Airlines, Delta
Roundtrip price
$418
Distance
2161 mi

Tri-Cities to Portland Flights

The cheapest times to fly from Tri-Cities to Portland

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

 

The best time to book a flight from Tri-Cities to Portland

Sunday is one of the best days to book for cheap flights from Tri-Cities to Portland: 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 Tri-Cities to Portland

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 Tri-Cities to Portland in 2025. You can also book with separate airlines for your outbound and return journeys, from $207 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 Tri-Cities to Portland 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 Tri-Cities to Portland 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 Tri-Cities Regional Airport (TRI) to Portland Intl. Airport (PDX) cost?
Get a cheap one-way flight from $207 or cheap return flight from $419 from Tri-Cities Regional Airport (TRI) to Portland Intl. Airport (PDX) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Tri-Cities Regional Airport (TRI) to Portland Intl. Airport (PDX)?
Traveling in November is a good way to save, as it's the cheapest month for flights between TRI and PDX. You'll typically find the lowest prices during the off-season.
What is the cheapest airline that flies from Tri-Cities Regional Airport (TRI) to Portland Intl. Airport (PDX)?
Use the filters on Expedia to compare different airlines and find the most affordable carrier that'll fly you from TRI to PDX. Then, sort your results by "Price (lowest to highest)" to score a good deal.
How many flights per day from Tri-Cities Regional Airport (TRI) to Portland Intl. Airport (PDX)?
You'll have to catch a flight with a layover when traveling from Tri-Cities Regional Airport (TRI) to Portland Intl. Airport (PDX). There are no daily direct flights on this route. However, just filter your search to include one or two stops to discover the best option for your trip.
What day of the week has the most flights from TRI to PDX?
Friday is generally the busiest day for flights, while Tuesday is often the quietest.* Just remember that flight schedules can change based on various factors, such as the time of year and airline.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Tri-Cities Regional Airport (TRI) to Portland Intl. Airport (PDX)?
To avoid possible delays on the Tri-Cities Regional Airport (TRI) to Portland Intl. Airport (PDX) route, fly before 3 PM. Departures after this hour 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 Tri-Cities Regional Airport (TRI) to Portland Intl. Airport (PDX) last-minute?
Booking your flight from TRI to PDX just before your journey is typically more expensive. But if you're flexible with your departure times and dates, you could land a cheap last-minute fare.
Is it cheaper to book a TRI to PDX flight and hotel package?
Compared with arranging hotels and flights separately, booking a TRI to PDX flight and hotel package with Expedia could result in significant savings. Better yet, managing everything in one place takes the hassle out of planning your trip. Simply secure your flights and choose from our wide range of hotels, then customize your trip with extras like tours, car rentals and activities.
Can I cancel or change the date of my flight from Tri-Cities Regional Airport (TRI) to Portland Intl. Airport (PDX)?
Typically, you're able to cancel or reschedule your TRI to PDX flight. However, there may be additional fees, especially if you booked over 24 hours ago. Check your itinerary for the airline's fees and policies on flight changes, or if you want more information, go to our Customer Service portal.

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*Available to One Key members.