Flight OddsUA4421 SGF → ORD
United Airlines · Springfield, MO to Chicago, IL · 305 flights observed, 2025-07-01 to 2026-06-30 · 438 mi
UA4421 covers more than one route in the data window — the stats below are for SGF → ORD, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
81%
Median delay
-9 min
90th percentile
+58 min
Cancellation rate
4%
How often is UA4421 on time?
Across 305 flights on SGF → ORD from 2025-07-01 to 2026-06-30, UA4421 arrived within 15 minutes of schedule 81% of the time. The median arrival delay was -9 min, and the worst 10% of flights arrived +58 min or later. 4% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 236 | 81% |
| 16-30 min | 21 | 7% |
| 31-60 min | 6 | 2% |
| 61-120 min | 9 | 3% |
| 2+ hrs | 20 | 7% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 31 | 90% | +8 min |
| 2025-08 | 17 | 82% | -7 min |
| 2025-09 | 6 | 83% | -7 min |
| 2025-10 | 31 | 84% | -1 min |
| 2025-11 | 28 | 82% | +1 min |
| 2025-12 | 16 | 63% | +41 min |
| 2026-01 | 22 | 68% | +24 min |
| 2026-02 | 28 | 93% | -15 min |
| 2026-03 | 28 | 79% | +34 min |
| 2026-04 | 25 | 64% | +42 min |
| 2026-05 | 30 | 73% | +88 min |
| 2026-06 | 30 | 97% | -10 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 40 | 88% |
| Tue | 43 | 84% |
| Wed | 42 | 79% |
| Thu | 43 | 79% |
| Fri | 43 | 77% |
| Sat | 42 | 79% |
| Sun | 39 | 82% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…