$78 Find Cheap Flights from Knoxville to Illinois - Compare and Save

The cheapest ticket to Illinois from Knoxville found in the last 5 days was to Chicago, at $98 round-trip. The most popular route is from Knoxville (TYS) to Chicago O'Hare Intl Airport (ORD), and the cheapest round-trip airline ticket found on this route in the last 5 days was $249.

The cheapest time of day to fly to Illinois is generally in the morning, when round-trip flights cost $496 on average. Morning departures are around 7% cheaper than evening flights, on average. The most expensive time of day to fly to Illinois is generally in the afternoon, which is peak travel time and where the average cost of a ticket is $724.

No, with an average price for the route of $202, prices are generally cheapest when you fly direct.

The cheapest month for flights from Knoxville to Illinois is January, when tickets cost $236 (return) on average. On the other hand, the most expensive months are March and June, when the average cost of round-trip tickets is $343 and $318 respectively.

If your flying dates are flexible, you should consider flying to Illinois on a Friday, as we generally find the cheapest rates on that day for this route. On the other hand, Sunday is the most expensive day to fly from Knoxville to Illinois. For your return ticket, we recommend flying on a Saturday and avoiding Mondays for the best deals.

To get a below average price on the flight from Knoxville to Illinois, you should book around 4 weeks before departure, which saves you about 38% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 21 weeks before departure.

There are 3 airlines that fly nonstop from Knoxville to Illinois. They are: American Airlines, United Airlines and Allegiant Air. The cheapest price of all airlines flying this route was found with Allegiant Air at $73 for a round-trip flight to Chicago Midway Airport (MDW). On average, Allegiant Air offers the best prices for nonstop flights between Knoxville and Illinois.

American Airlines connects Knoxville to Illinois with 28 flights per week. Alaska Airlines also offers 28 flights per week, while Aer Lingus follows with 27 flights per week.

The duration of a flight to Illinois depends on your arrival airport. The shortest routes to Illinois from Knoxville are to Chicago, which takes 1h 43m, Moline, which takes 4h 14m, and Peoria, which takes 4h 57m.

There are 4 cabin class options for the route. These are First, Business, Economy and Prem Economy. Perform a search on KAYAK to find the latest prices and availability for all cabin fares, which differ across airlines.

The earliest flight from Knoxville to Illinois departs at 6:00 am, landing in Chicago at 6:59 am.

If you prefer to fly at night, the latest flight from Knoxville to Illinois jets off at 7:18 pm and lands in Chicago at 8:30 pm.