Cheap flights from Arkansas to Illinois from $148

The cheapest month to fly to Illinois from Arkansas is in February. Flight prices, which tend to average around $284, 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 January is also cheap. Prices for this month can be found on momondo for an average of $292.

The cheapest day to depart from Arkansas to Illinois is on a Thursday when prices can be found for as low as $390. Flights from Arkansas to Illinois on a Sunday will generally be more expensive and average around $738. 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 Arkansas to Illinois during this time can be as low as $435. Flights at noon are often more expensive with an average ticket price of $931.

Fly from Fayetteville Northwest Arkansas to Chicago O'Hare Intl for the best Arkansas - Illinois flight prices

You are more likely to see cheaper flights to Illinois from Arkansas when booking weeks ahead of your departure date. In general, you can expect to find flights to Illinois for around $329 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Illinois from Arkansas for as low as $245 on momondo.

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

Southwest, Allegiant Air, and United Airlines are the most popular carriers operating from Arkansas to Illinois

American Airlines, United Airlines and Southwest are the top three most popular airlines that fly to Illinois from Arkansas according to our data. American Airlines is the first choice among our users, with 72% 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.

The number of flights available between Arkansas and Illinois is 36 per day as of September 2026. The most frequent departure time is 2:00PM, with 49% of daily flights leaving at noon.

The number of flights available between Arkansas and Illinois is 254 per week as of September 2026. The most frequent departure day is Wed, with 20% of weekly flights leaving on this day.