Decatur Airport (DEC) delays & on-time performance
Decatur, Illinois · 1 nonstop destinations · 1 airlines · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at DEC right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
On-time arrivals
67%
arrived < 15 min late
Cancelled
5.4%
34 flights
Avg arrival delay
33 min
95 min when late
Departed on time
80%
avg taxi-out 17 min
Figures cover 627 departures from DEC; on-time is measured at arrival. Arrivals into DEC were on time 70% of the time.
Key facts
- Flights departing Decatur Airport (DEC) arrived on time 67% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 5.4% were cancelled, and 15% arrived an hour or more late.
- Departures scheduled around 9am did best (79% on time); around 6pm did worst (54%).
- The largest source of delay minutes was late-arriving aircraft (41%).
Most delayed routes from DEC
Lowest on-time arrival rates among regularly flown routes.
- ORD · Chicago67%627 flts
Most reliable routes from DEC
Highest on-time arrival rates among regularly flown routes.
- ORD · Chicago67%627 flts
Best airline at DEC
Departures from this airport, ranked by on-time arrival.
| Airline | On time | Cancelled | Avg delay | Routes | Flights |
|---|---|---|---|---|---|
| SkyWest Airlines | 67% | 5.4% | 33 min | 1 | 627 |
Best time to fly out of DEC
On-time arrival rate by scheduled departure hour (local time).
- 9am79%290 flts
- 6pm54%122 flts
- 7pm57%215 flts
Monthly trend
Why departures were late
- Late-arriving aircraft41%
- Airline (crew, maintenance, cleaning, fueling)34%
- Air traffic control & airport congestion16%
- Extreme weather8%
- Security0%
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. How we calculate this.