Due to multiple factors, expect to potentially pay more when booking in November. For low rates, September can be a great choice for travel to Decatur, Illinois. Flights to Decatur, Illinois from Chicago O'Hare Intl Airport in September are about $171 on average during September, but can be found for as low as $114.
When flying from Chicago O'Hare Intl Airport to Decatur, Illinois, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
|Afternoon Noon to 6 PM||58% of ORD to DEC departures|
|Morning 6 AM to noon||41% of ORD to DEC departures|
|Early morning Midnight to 6 AM||1% of ORD to DEC departures|
|Evening 6 PM to midnight||0% of ORD to DEC departures|