Cheap flights from Lexington to Illinois from $130

The cheapest month to fly to Illinois from Lexington is in February. Flight prices, which tend to average around $234, 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 February, then flying in December is also cheap. Prices for this month can be found on momondo for an average of $296.

The cheapest day to depart from Lexington to Illinois is on a Friday when prices can be found for as low as $451. Flights from Lexington to Illinois on a Sunday will generally be more expensive and average around $885. 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 morning. Flights from Lexington to Illinois during this time can be as low as $541. Flights in the evening are often more expensive with an average ticket price of $861.

Fly from Lexington Blue Grass to Chicago O'Hare Intl for the best Lexington Blue Grass - Illinois flight prices

You are more likely to see cheaper flights to Illinois from Lexington when booking weeks ahead of your departure date. In general, you can expect to find flights to Illinois for around $323 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Illinois from Lexington for as low as $221 on momondo.

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

American Airlines, Allegiant Air, and Delta are the most popular carriers operating from Lexington Blue Grass to Illinois

United Airlines, American Airlines and Southwest are the top three most popular airlines that fly to Illinois from Lexington according to our data. United Airlines is the first choice among our users, with 54% of people opting to fly with this airline when traveling to Illinois. Keep in mind that there are 4 different airlines that fly to Illinois on a routine basis, so you have a few additional options to choose from.

As of October 2026, 7 flights take off from Lexington and land in Illinois each day. The most common flight departure time for this route is 11:00AM, with 52% of daily flights taking off at noon.

The number of flights available between Lexington and Illinois is 49 per week as of October 2026. The most frequent departure day is Fri, with 57% of weekly flights leaving on this day.