Flight OddsIAD → ORD United Airlines
United Airlines · Washington, DC to Chicago, IL · 2,054 flights, 2025-07-01 to 2026-06-30 · aggregated across 30 flight numbers
On-time arrival
76%
Median delay
-3 min
90th percentile
+46 min
Cancellation rate
1%
How on-time is United Airlines from IAD to ORD?
Across every United Airlines flight number on IAD → ORD (2,054 flights, 2025-07-01 to 2026-06-30), 76% arrived within 15 minutes of schedule. Median arrival delay -3 min; the worst 10% ran +46 min or later. 1% were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 1,544 | 76% |
| 16-30 min | 186 | 9% |
| 31-60 min | 138 | 7% |
| 61-120 min | 85 | 4% |
| 2+ hrs | 79 | 4% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 182 | 64% | +30 min |
| 2025-08 | 192 | 77% | +10 min |
| 2025-09 | 203 | 79% | +1 min |
| 2025-10 | 176 | 74% | +8 min |
| 2025-11 | 148 | 78% | +11 min |
| 2025-12 | 146 | 77% | +11 min |
| 2026-01 | 125 | 73% | +7 min |
| 2026-02 | 112 | 78% | +4 min |
| 2026-03 | 142 | 77% | +20 min |
| 2026-04 | 181 | 76% | +17 min |
| 2026-05 | 216 | 78% | +8 min |
| 2026-06 | 209 | 79% | +14 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 290 | 77% |
| Tue | 297 | 79% |
| Wed | 290 | 74% |
| Thu | 289 | 74% |
| Fri | 295 | 76% |
| Sat | 283 | 78% |
| Sun | 288 | 73% |
UA flight numbers on IAD → ORD
Related
Based on US DOT Bureau of Transportation Statistics on-time data. Loading the full breakdown…