Cheap Flights from Champaign (CMI) to Decatur (DEC)

Popular airlines from Champaign, IL (CMI-University Of Illinois Urbana-Champaign Williard) to Decatur, IL (DEC)

Flights from Champaign (CMI) to Decatur (DEC)
Origin airport
University Of Illinois Urbana-Champaign Williard
Destination airport
Decatur
Distance
35 mi

Champaign to Decatur Flights

The cheapest times to fly from Champaign to Decatur

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Champaign to Decatur are during the month of . You can find some of the cheapest flights from Champaign to Decatur with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Champaign to Decatur

Sunday is one of the best days to book for cheap flights from Champaign to Decatur: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Champaign to Decatur

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Champaign to Decatur in 2025. You can also book with separate airlines for your outbound and return journeys, from one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Champaign to Decatur flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Champaign to Decatur airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from University Of Illinois Urbana-Champaign Williard Airport (CMI) to Decatur Airport (DEC) cost?
Discover the latest flight deals from CMI to DEC by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from CMI to DEC?
The cheapest flights from CMI to DEC are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from CMI to DEC?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from CMI to DEC. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from University Of Illinois Urbana-Champaign Williard Airport (CMI) to Decatur Airport (DEC)?
There aren't any daily nonstop flights from University Of Illinois Urbana-Champaign Williard Airport (CMI) to Decatur Airport (DEC). But you can choose flights with layovers. Filter your search on Expedia to include one or two stops, and you'll be soaring above the clouds in no time at all.
What day of the week has the most flights from CMI to DEC?
Friday is generally the busiest day for flights, while Tuesday tends to be the quietest.* Keep in mind that flight schedules can change depending on a range of factors, including the time of year and carrier.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from University Of Illinois Urbana-Champaign Williard Airport (CMI) to Decatur Airport (DEC)?
To avoid possible delays on the University Of Illinois Urbana-Champaign Williard Airport (CMI) to Decatur Airport (DEC) route, fly before 3 PM. Departures after this time are 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from University Of Illinois Urbana-Champaign Williard Airport (CMI) to Decatur Airport (DEC) last-minute?
Booking your ticket from CMI to DEC right before your getaway is typically more expensive. But if there's some wiggle room with your itinerary, you could bag a cheap last-minute fare.
Is it cheaper to book a CMI to DEC flight and hotel package?
Securing a CMI to DEC flight and hotel package is typically cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Choose from our impressive range of accommodations and then add activities, car rentals and flights to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from University Of Illinois Urbana-Champaign Williard Airport (CMI) to Decatur Airport (DEC)?
It's usually possible to reschedule or cancel your CMI to DEC flight. However, for bookings made more than 24 hours ago, additional charges may apply. Refer to your airline's policies in your itinerary to see what changes are allowed and if any costs are involved. You'll also find more information on our Customer Service portal.

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*Available to One Key members.