To save up to 10% on this flight, we recommend booking at least 20 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Marion to Chicago from $137 1-2 weeks out and tickets from $157 for flights departing within the next 72 hours.
Flights from Marion to Chicago lean towards being more expensive in December. Prices are generally better when you fly from Marion to Chicago in April, with the cheapest ticket starting at $33.