Cheap flights from Austin to Knoxville from $45

The month of December is, on average, the cheapest month to fly to Knoxville from Austin, with most prices found around $185. If you aren’t able to travel during the month of December, then book flights to Knoxville from Austin during August instead. Flights to Knoxville in August, while not as cheap as those in December, still average around $200.

The cheapest day to depart from Austin to Knoxville is on a Monday. Travelers who choose to depart for Knoxville on a Monday will often find tickets for as low as $176. When flying out on a Wednesday, the most expensive travel day of the week, you can expect to see flight prices from Austin to Knoxville for around $400.

In the morning is the cheapest time of day to fly from Austin to Knoxville when you can find flight prices for as low as $176. Flying to Knoxville in the morning is an ideal time because this is during off-peak travel hours. In contrast, the most expensive time of day to depart to Knoxville is in the afternoon when prices are around $255.

Fly from Austin Bergstrom to Knoxville McGhee Tyson for the best Austin Bergstrom - Knoxville McGhee Tyson flight prices

You are more likely to see cheaper flights to Knoxville from Austin when booking weeks ahead of your departure date. In general, you can expect to find flights to Knoxville for around $298 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Knoxville from Austin for as low as $203 on momondo.

There is only 1 cabin class available to choose from on Austin to Knoxville flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

No. A direct flight is the cheapest option for a flight between Austin to Knoxville.

As of October 2026, prices for Austin to Knoxville flights are approximately 18% more expensive when compared to flights at the same time last year.

Delta and United Airlines are the most popular carriers operating from Austin Bergstrom to Knoxville McGhee Tyson

Delta, American Airlines and Allegiant Air are the top three most popular airlines that fly to Knoxville from Austin according to our data. Delta is the first choice among our users, with 35% of people opting to fly with this airline when traveling to Knoxville. Keep in mind that there are 5 different airlines that fly to Knoxville on a routine basis, so you have a few additional options to choose from.

Dallas (DFW) was the most common stop: 71% of momondo users choosing 1-stop flights on this route connected there.

Flights via Dallas (DFW) offer the lowest average round-trip price of $376.

Flights connecting via Dallas (DFW) have the shortest average one-way travel time: 4h 40m.

Dallas (DFW) has the shortest average layover time for this route: 1h 12m.