Travelers have found that booking a Sunday departure is the best way to save up to 16% on the cost of booking your flights compared to booking on days of the week where this route is of high demand.
When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 20 days in advance, which can save you up to 10% on flights from Decatur to Chicago compared to booking the week you need them. Waiting 20 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at $137. For sooner than that we have options available in the next 3 days from $157.
Flights from Decatur to Chicago lean towards being more expensive in December. Prices are generally better when you fly from Decatur to Chicago in April, with the cheapest ticket starting at $33.
It’s typically best to fly out from Decatur to Chicago at noon. Doing so could potentially save you 8% on the flight price compared to flying in the morning, which is usually more expensive.
|Morning 6 AM to noon||91% of DEC to CHI departures|
|Afternoon Noon to 6 PM||8% of DEC to CHI departures|
|Early morning Midnight to 6 AM||1% of DEC to CHI departures|
|Evening 6 PM to midnight||0% of DEC to CHI departures|