The cheapest times to fly from DEC to ORD are

  • September 10th to October 14th
  • November 5th to August 19th (except the weeks of November 19th and July 16th)

based on data collected exclusively by Champion Traveler across tens of millions of flights. Among all the dates above, the very cheapest time to fly from DEC to ORD is late December. Prices can be as high as $128 for Sunday flights during early September, or as low as $118 for Wednesday flights around late December.


When to Fly to Chicago

Flying from Decatur, IL (DEC) to Chicago, IL (ORD) will usually cost between $118 to $123 per person if booking more than four weeks in advance. On average the very cheapest time to fly is late December with an average ticket price of $118. Due to high demand the most expensive time to fly is early September, with an average price of $119. Planning your trip to low-cost times can easily save you $1 on economy flights and even more on first-class flights. Generally, any price below $123 can be considered a good price for a round-trip DEC to ORD flight.

See below for a graph of average weekly prices for the DEC to ORD route. All prices are for round-trip tickets in USD.

DEC to ORD Flight Prices

Compared to other flights, the DEC to ORD flight is much cheaper than the average and costs much less than the average flight leaving from Decatur. The average price per mile (for a direct flight) is $0.49, which is above average.


Flight Prices by Day of the Week

Wednesday is usually the cheapest day to depart and return on this flight. Sundays are the most expensive days to fly out or take a return trip. Selecting flights on the least expensive days could save you up to $1 (1%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Wednesday and returning a week later will cost an average of $118. Return trip prices are from the ORD to DEC flight, and often highlight the quality of our data in showing the same trend.

Departing Prices by Day

Departure Day Prices

Return Trip Prices by Day

Return Day Prices


Nonstop Flights and Layovers

Travelers looking to fly from DEC to ORD can generally find a 0-layover flight. Because there is a direct flight option the real-world direct flight time of 1 hour 16 minutes may be realistic.


Flight Questions Answered

Still have questions about flying from DEC to ORD? We’ve got answers.

Which airlines fly this route?

You can find 4 major airlines flying this route most often: American, Cape Air, Delta, United, and potentially more during busy seasons.

How far away is it from Chicago O’Hare International Airport to Decatur Airport?

The distance between the two airports is roughly 156 miles or 251 kilometers.

How long does it take to fly from DEC to ORD?

The real-world flight time for a nonstop DEC to ORD flight is about 1 hour 16 minutes.

How many flights go between Decatur, IL and Chicago, IL?

It depends on the day of the week and the date, but a typical day might have around 49 available flights from DEC to ORD.


Airport Location Info


Departing Airport

Origination codeDEC
Origination airport nameDecatur Airport
CityDecatur, IL
Countrythe United States

Return Airport

Destination codeORD
Destination airport nameChicago O’Hare International Airport
CityChicago, IL
Countrythe United States


Other Resources

Please note that while we’ve worked hard to analyzed tens of millions of flights to get you this data, we do not calculate current live prices or guarantee pricing. Please see our partners using the links above for current offers.