Cheap flights from South Bend to Illinois from $102

The cheapest month to fly to Illinois from South Bend is in January. Flight prices, which tend to average around $0, 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 March is also cheap. Prices for this month can be found on momondo for an average of $179.

The cheapest day to depart from South Bend to Illinois is on a Wednesday when prices can be found for as low as $369. Flights from South Bend to Illinois on a Sunday will generally be more expensive and average around $497. 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 South Bend to Illinois during this time can be as low as $384. Flights at noon are often more expensive with an average ticket price of $404.

Fly from South Bend/Michiana to Chicago O'Hare Intl for the best South Bend/Michiana - Illinois flight prices

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

No. A direct flight is the cheapest option for a flight between South Bend to Illinois.

As of August 2026, 10 flights take off from South Bend and land in Illinois each day. The most common flight departure time for this route is 4:00PM, with 47% of daily flights taking off at noon.

The number of flights available between South Bend and Illinois is 73 per week as of August 2026. The most frequent departure day is Mon, with 16% of weekly flights leaving on this day.