Cheap flights from Illinois to Tennessee from $49

The cheapest month to fly to Tennessee from Illinois is in December. Flight prices, which tend to average around $159, are often lower during this time because this is during the off-season. If you don’t want to visit Tennessee in December, then you should wait until August to fly from Illinois, when ticket prices are also cheap, with an average price of $176.

The cheapest day to depart from Illinois to Tennessee is on a Thursday. Travelers who choose to depart for Tennessee on a Thursday will often find tickets for as low as $219. Flights from Illinois to Tennessee on a Tuesday will generally be more expensive and average around $296. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

The cheapest time of day to fly to Tennessee is in the morning when flights can be purchased for as low as $223. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $266 on average. Flights to Tennessee from Illinois at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.

Fly from Chicago Greater Rockford to Nashville Intl for the best Illinois - Tennessee flight prices

You are more likely to see cheaper flights to Tennessee from Illinois when booking weeks ahead of your departure date. In general, you can expect to find flights to Tennessee for around $241 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Tennessee from Illinois for as low as $182 on momondo.

There are 4 cabin classes available to choose from on Illinois to Tennessee flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Southwest, Delta, and Southern / Mokulele are the most popular carriers operating from Illinois to Tennessee

American Airlines, United Airlines and Frontier are the top three most popular airlines that fly to Tennessee from Illinois according to our data. American Airlines is the first choice among our users, with 40% of people opting to fly with this airline when traveling to Tennessee. Keep in mind that there are 8 different airlines that fly to Tennessee on a routine basis, so you have a few additional options to choose from.

As of April 2026, there are 131 flights per day flying from Illinois to Tennessee. The most common time of day flights depart is 5:00PM, with 37% of flights taking off in the afternoon.

As of April 2026, 921 flights take off from Illinois and land in Tennessee each week. The most common flight departure day for this route is Mon, with 17% of weekly flights taking off on this day.