Decatur Airport (DEC): Delays & On-Time Performance
Data through May 2026
Decatur Airport (DEC) in Decatur, IL is a middle-of-the-pack performer: 81% of departures are on time, within a few points of the national 78%. It hosts 1 airlines flying 2 departures a day to 1 destinations, with cancellations at 2.7%.
- Departures on-time
- 81%
- left <15 min late
- Avg dep delay
- 27 min
- Arrivals on-time
- 72%
- Cancelled
- 2.7%
- Destinations
- 1
- nonstop
- Airlines
- 1
Monthly on-time trend
Best time of day to depart from DEC
Busiest routes from DEC
| Route | Flights/12mo | On-time | Avg delay |
|---|---|---|---|
| DEC → ORD | 627 | 73% | 31 min |
Frequently asked questions
- How often are flights delayed at DEC?
- 19% of departures from Decatur Airport left 15+ minutes late between 2024-06 and 2026-05, with an average departure delay of 27 minutes. The national on-time average over the same period was 78%.
- What is the best time of day to depart from DEC?
- Flights scheduled around 9 a.m. depart on time 88% of the time at DEC, versus 72% around 7 p.m.. Booking before noon is the usual rule of thumb here.
- How often are flights cancelled at DEC?
- 2.7% of scheduled departures from DEC were cancelled in this period, compared with a national rate of 1.6%.
Popular route pages from this airport
Based on 1,254 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.