Cheap flights from Nashville to Illinois from $120

The cheapest month to fly to Illinois from Nashville is in December. Flight prices, which tend to average around $315, are often lower during this time because this is during the off-season. If you aren’t able to travel to Illinois during the month of December, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $321.

The cheapest day to depart from Nashville to Illinois is on a Thursday when prices can be found for as low as $442. Flights from Nashville to Illinois on a Tuesday will generally be more expensive and average around $788. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

Our most recent data shows that the best time of day to fly to Illinois is in the evening. Flights from Nashville to Illinois during this time can be as low as $439. Flights at noon are often more expensive with an average ticket price of $1,078.

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

You are more likely to see cheaper flights to Illinois from Nashville when booking weeks ahead of your departure date. In general, you can expect to find flights to Illinois for around $344 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Illinois from Nashville for as low as $246 on momondo.

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

Contour, Delta, and Southwest are the most popular carriers operating from Nashville Intl to Illinois

United Airlines, American Airlines and Southwest are the top three most popular airlines that fly to Illinois from Nashville according to our data. United Airlines is the first choice among our users, with 40% of people opting to fly with this airline when traveling to Illinois. Keep in mind that there are 6 different airlines that fly to Illinois on a routine basis, so you have a few additional options to choose from.

As of October 2026, 27 flights take off from Nashville and land in Illinois each day. The most common flight departure time for this route is 3:00PM, with 46% of daily flights taking off at noon.

As of October 2026, 190 flights take off from Nashville and land in Illinois each week. The most common flight departure day for this route is Thu, with 34% of weekly flights taking off on this day.