Flight OddsSEA → ORD United Airlines
United Airlines · Seattle, WA to Chicago, IL · 1,534 flights, 2025-07-01 to 2026-06-30 · aggregated across 37 flight numbers
On-time arrival
81%
Median delay
-7 min
90th percentile
+43 min
Cancellation rate
1%
How on-time is United Airlines from SEA to ORD?
Across every United Airlines flight number on SEA → ORD (1,534 flights, 2025-07-01 to 2026-06-30), 81% arrived within 15 minutes of schedule. Median arrival delay -7 min; the worst 10% ran +43 min or later. 1% were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 1,218 | 81% |
| 16-30 min | 88 | 6% |
| 31-60 min | 94 | 6% |
| 61-120 min | 57 | 4% |
| 2+ hrs | 54 | 4% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 181 | 72% | +13 min |
| 2025-08 | 165 | 68% | +25 min |
| 2025-09 | 141 | 87% | +2 min |
| 2025-10 | 134 | 90% | -4 min |
| 2025-11 | 107 | 77% | +12 min |
| 2025-12 | 90 | 77% | +11 min |
| 2026-01 | 89 | 87% | +5 min |
| 2026-02 | 82 | 95% | -10 min |
| 2026-03 | 93 | 83% | -2 min |
| 2026-04 | 132 | 85% | +3 min |
| 2026-05 | 148 | 85% | -4 min |
| 2026-06 | 149 | 74% | +20 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 220 | 82% |
| Tue | 220 | 85% |
| Wed | 217 | 79% |
| Thu | 222 | 82% |
| Fri | 216 | 76% |
| Sat | 198 | 83% |
| Sun | 218 | 77% |
UA flight numbers on SEA → ORD
Related
Based on US DOT Bureau of Transportation Statistics on-time data. Loading the full breakdown…