$185 Cheap Flights from Denver (DEN) to Tri-Cities (TRI)

View $185 flight on Fri, May 29, 2026Opens in a new window

Popular airlines from Denver Intl. Airport (DEN) to Tri-Cities, TN (TRI-Tri-Cities Regional)

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Cheap Flights from Denver to Tri-Cities (DEN-TRI)

Prices were available within the past 7 days and start at $185 for one-way flights and $309 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Fri, May 29 - Wed, Jun 10
DEN
Denver
TRI
Tri-Cities
$309 Roundtrip, found 13 hours ago
$309
Roundtrip
found 13 hours ago
Select American Airlines flight, departing Fri, May 29 from Denver to Tri-Cities, returning Wed, Jun 10, priced at $309 found 13 hours ago
Delta
Fri, May 29 - Wed, Jun 10
DEN
Denver
TRI
Tri-Cities
$309 Roundtrip, found 13 hours ago
$309
Roundtrip
found 13 hours ago
Select Delta flight, departing Fri, May 29 from Denver to Tri-Cities, returning Wed, Jun 10, priced at $309 found 13 hours ago
United
Tue, Jun 9 - Sat, Jun 13
DEN
Denver
TRI
Tri-Cities
$309 Roundtrip, found 5 days ago
$309
Roundtrip
found 5 days ago
Select United flight, departing Tue, Jun 9 from Denver to Tri-Cities, returning Sat, Jun 13, priced at $309 found 5 days ago
Delta
Wed, Jun 10 - Wed, Jun 17
DEN
Denver
TRI
Tri-Cities
$317 Roundtrip, found 5 days ago
$317
Roundtrip
found 5 days ago
Select Delta flight, departing Wed, Jun 10 from Denver to Tri-Cities, returning Wed, Jun 17, priced at $317 found 5 days ago
Delta
Fri, May 29 - Wed, Jun 3
DEN
Denver
TRI
Tri-Cities
$319 Roundtrip, found 2 hours ago
$319
Roundtrip
found 2 hours ago
Select Delta flight, departing Fri, May 29 from Denver to Tri-Cities, returning Wed, Jun 3, priced at $319 found 2 hours ago
Delta
Fri, Jul 31 - Fri, Aug 7
DEN
Denver
TRI
Tri-Cities
$329 Roundtrip, found 1 hour ago
$329
Roundtrip
found 1 hour ago
Select Delta flight, departing Fri, Jul 31 from Denver to Tri-Cities, returning Fri, Aug 7, priced at $329 found 1 hour ago
United
Tue, Jun 9 - Sat, Jun 13
DEN
Denver
TRI
Tri-Cities
$333 Roundtrip, found 5 days ago
$333
Roundtrip
found 5 days ago
Select United flight, departing Tue, Jun 9 from Denver to Tri-Cities, returning Sat, Jun 13, priced at $333 found 5 days ago
Delta
Thu, Sep 17 - Tue, Sep 22
DEN
Denver
TRI
Tri-Cities
$335 Roundtrip, found 9 hours ago
$335
Roundtrip
found 9 hours ago
Select Delta flight, departing Thu, Sep 17 from Denver to Tri-Cities, returning Tue, Sep 22, priced at $335 found 9 hours ago
United
Tue, Jun 9 - Sat, Jun 13
DEN
Denver
TRI
Tri-Cities
$335 Roundtrip, found 5 days ago
$335
Roundtrip
found 5 days ago
Select United flight, departing Tue, Jun 9 from Denver to Tri-Cities, returning Sat, Jun 13, priced at $335 found 5 days ago
American Airlines
Fri, May 29 - Wed, Jun 3
DEN
Denver
TRI
Tri-Cities
$339 Roundtrip, found 2 hours ago
$339
Roundtrip
found 2 hours ago
Select American Airlines flight, departing Fri, May 29 from Denver to Tri-Cities, returning Wed, Jun 3, priced at $339 found 2 hours ago

Frequently asked questions

How much does a flight from Denver, CO (DEN-Denver Intl.) to Tri-Cities, TN (TRI-Tri-Cities Regional) cost?
You can find cheap one-way flights and cheap return flights from $309 Denver, CO (DEN-Denver Intl.) to Tri-Cities, TN (TRI-Tri-Cities Regional) with Expedia. One-way flights generally range between $222 and $805, and roundtrip flights usually range from $419 to $1617. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Denver, CO (DEN-Denver Intl.) to Tri-Cities, TN (TRI-Tri-Cities Regional) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Denver, CO (DEN-Denver Intl.) to Tri-Cities, TN (TRI-Tri-Cities Regional)?
November is the cheapest month to fly from Denver, CO (DEN) to Tri-Cities, TN (TRI), with average return fares around $323. This is about 32% lower than the average price throughout the year, as demand typically drops after the summer travel peak. Other affordable months to consider are January and April.*Averages based on flights available on Expedia in the last year.
Which airlines fly direct from Denver, CO (DEN-Denver Intl.) to Tri-Cities, TN (TRI-Tri-Cities Regional)?
Enter DEN to TRI and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Denver, CO (DEN-Denver Intl.) to Tri-Cities, TN (TRI-Tri-Cities Regional)?
American Airlines is one of the cheapest airlines offering connecting flights from Denver Intl. (DEN) to Tri-Cities Regional (TRI), with round-trip tickets starting from around $248. This flight includes a layover in O'Hare Intl. (ORD). Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.
How do I find cheap flights from Denver, CO (DEN-Denver Intl.) to Tri-Cities, TN (TRI-Tri-Cities Regional)?
To find a cheap flight from Denver, CO (DEN-Denver Intl.) to Tri-Cities, TN (TRI-Tri-Cities Regional), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Denver, CO (DEN-Denver Intl.) to Tri-Cities, TN (TRI-Tri-Cities Regional)?
The best times to fly from Denver (DEN) to Tri-Cities (TRI) are November and April. November offers an average return flight price of around $323, while April is also popular. These months help you find better prices and a variety of flight options.*Prices based on flights available on Expedia in the last year.
What is the earliest flight from Denver, CO (DEN-Denver Intl.) to Tri-Cities, TN (TRI-Tri-Cities Regional)?
The earliest flight from Denver International Airport (DEN) to Tri-Cities Regional Airport (TRI) typically departs at around 12:15 AM, operated by United and Delta Airlines. This is a seasonal service active in December, and an early flight can help you make the most of your time in Tri-Cities. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What are the most popular departure times for flights from Denver, CO (DEN-Denver Intl.) to Tri-Cities, TN (TRI-Tri-Cities Regional)?
The most popular departure times for flights from Denver (DEN-Denver Intl.) to Tri-Cities (TRI-Tri-Cities Regional) are in the late morning, from 9am to noon. About 35% of passengers prefer this time window. Many major carriers, including United Airlines and American Airlines, operate flights during this time. This timing is popular because it allows you to travel early and arrive in Tri-Cities with the day ahead of you.
How long does it take to fly from Denver, CO (DEN-Denver Intl.) to Tri-Cities, TN (TRI-Tri-Cities Regional)?
A flight from DEN to TRI with a layover takes around 5 hours 20 minutes, with the route covering approximately 1,228 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Denver, CO (DEN-Denver Intl.) to Tri-Cities, TN (TRI-Tri-Cities Regional)?
First class seats are offered on the DEN to TRI route. First class cabins are available on:

  • Delta Air Lines
  • American Airlines
  • United Airlines

How do I earn miles on a Denver, CO (DEN-Denver Intl.) to Tri-Cities, TN (TRI-Tri-Cities Regional) flight with Expedia?
It's easy to earn miles on a Denver, CO (DEN-Denver Intl.) to Tri-Cities, TN (TRI-Tri-Cities Regional) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Tri-Cities from Denver Intl. (DEN)?
From Denver Intl. (DEN), you can fly into Tri-Cities Regional (TRI) to reach Tri-Cities. Some flights may connect through major hubs like O'Hare Intl. (ORD), Washington Dulles Intl. (IAD), George Bush Intercontinental (IAH) before reaching Tri-Cities. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Denver, CO (DEN-Denver Intl.) to Tri-Cities, TN (TRI-Tri-Cities Regional) at the last minute?
Typically, booking a last minute flight from Denver, CO (DEN-Denver Intl.) to Tri-Cities, TN (TRI-Tri-Cities Regional) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Denver, CO (DEN-Denver Intl.) to Tri-Cities, TN (TRI-Tri-Cities Regional) flight and hotel package?
Securing a Denver, CO (DEN-Denver Intl.) to Tri-Cities, TN (TRI-Tri-Cities Regional) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Denver, CO (DEN-Denver Intl.) to Tri-Cities, TN (TRI-Tri-Cities Regional)?
If you booked your Denver, CO (DEN-Denver Intl.) to Tri-Cities, TN (TRI-Tri-Cities Regional) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, 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
Denver Intl.
Destination airport
Tri-Cities Regional
Airlines serving
American Airlines, Delta
Roundtrip price
$308
Distance
1228 mi

Book with confidence

Denver to Tri-Cities Flights

The cheapest times to fly from Denver to Tri-Cities

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

 

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

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

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 Denver to Tri-Cities in 2026. You can also book with separate airlines for your outbound and return journeys, from $185 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 Denver to Tri-Cities 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 Denver to Tri-Cities 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.

 

Denver to Tri-Cities Flights

*Flight schedules are subject to change.

*Available to One Key members.

 

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