Cheap flights from Wilmington to Illinois from $98

The cheapest month to fly to Illinois from Wilmington is in January. Flight prices, which tend to average around $306, 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 January, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $323.

The cheapest day to depart from Wilmington to Illinois is on a Thursday when prices can be found for as low as $387. Flights from Wilmington to Illinois on a Sunday will generally be more expensive and average around $789. 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 afternoon. Flights from Wilmington to Illinois during this time can be as low as $407. Flights at noon are often more expensive with an average ticket price of $527.

Fly from Wilmington New Hanover County to Chicago O'Hare Intl for the best Wilmington New Hanover County - Illinois flight prices

You are more likely to see cheaper flights to Illinois from Wilmington when booking weeks ahead of your departure date. In general, you can expect to find flights to Illinois for around $372 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Illinois from Wilmington for as low as $265 on momondo.

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

Delta and American Airlines are the most popular carriers operating from Wilmington New Hanover County to Illinois

American Airlines, United Airlines and Southwest are the top three most popular airlines that fly to Illinois from Wilmington according to our data. American Airlines is the first choice among our users, with 76% 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 September 2026, there are 5 flights per day flying from Wilmington to Illinois. The most common time of day flights depart is 6:00PM, with 47% of flights taking off in the afternoon.

The number of flights available between Wilmington and Illinois is 40 per week as of September 2026. The most frequent departure day is Mon, with 15% of weekly flights leaving on this day.