Flight OddsATL → ORD United Airlines
United Airlines · Atlanta, GA to Chicago, IL · 1,627 flights, 2025-07-01 to 2026-06-30 · aggregated across 29 flight numbers
On-time arrival
75%
Median delay
-2 min
90th percentile
+63 min
Cancellation rate
2%
How on-time is United Airlines from ATL to ORD?
Across every United Airlines flight number on ATL → ORD (1,627 flights, 2025-07-01 to 2026-06-30), 75% arrived within 15 minutes of schedule. Median arrival delay -2 min; the worst 10% ran +63 min or later. 2% were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 1,199 | 75% |
| 16-30 min | 131 | 8% |
| 31-60 min | 100 | 6% |
| 61-120 min | 69 | 4% |
| 2+ hrs | 93 | 6% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 119 | 64% | +32 min |
| 2025-08 | 131 | 80% | +5 min |
| 2025-09 | 146 | 88% | -1 min |
| 2025-10 | 150 | 83% | +4 min |
| 2025-11 | 129 | 70% | +31 min |
| 2025-12 | 107 | 70% | +26 min |
| 2026-01 | 114 | 72% | +13 min |
| 2026-02 | 108 | 80% | +9 min |
| 2026-03 | 115 | 67% | +36 min |
| 2026-04 | 137 | 79% | +28 min |
| 2026-05 | 167 | 80% | +8 min |
| 2026-06 | 169 | 67% | +29 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 235 | 69% |
| Tue | 239 | 80% |
| Wed | 237 | 78% |
| Thu | 230 | 76% |
| Fri | 235 | 73% |
| Sat | 187 | 79% |
| Sun | 229 | 73% |
UA flight numbers on ATL → ORD
Related
Based on US DOT Bureau of Transportation Statistics on-time data. Loading the full breakdown…