Flight OddsPDX → ORD United Airlines
United Airlines · Portland, OR to Chicago, IL · 1,393 flights, 2025-07-01 to 2026-06-30 · aggregated across 28 flight numbers
On-time arrival
82%
Median delay
-6 min
90th percentile
+31 min
Cancellation rate
1%
How on-time is United Airlines from PDX to ORD?
Across every United Airlines flight number on PDX → ORD (1,393 flights, 2025-07-01 to 2026-06-30), 82% arrived within 15 minutes of schedule. Median arrival delay -6 min; the worst 10% ran +31 min or later. 1% were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 1,122 | 82% |
| 16-30 min | 110 | 8% |
| 31-60 min | 67 | 5% |
| 61-120 min | 41 | 3% |
| 2+ hrs | 35 | 3% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 142 | 73% | +20 min |
| 2025-08 | 139 | 83% | +4 min |
| 2025-09 | 121 | 79% | +5 min |
| 2025-10 | 125 | 79% | 0 min |
| 2025-11 | 88 | 82% | +7 min |
| 2025-12 | 90 | 86% | -6 min |
| 2026-01 | 80 | 86% | -2 min |
| 2026-02 | 76 | 91% | -7 min |
| 2026-03 | 91 | 87% | -4 min |
| 2026-04 | 125 | 74% | +17 min |
| 2026-05 | 149 | 86% | +1 min |
| 2026-06 | 149 | 82% | +3 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 194 | 82% |
| Tue | 189 | 83% |
| Wed | 191 | 80% |
| Thu | 209 | 82% |
| Fri | 204 | 83% |
| Sat | 187 | 85% |
| Sun | 201 | 77% |
UA flight numbers on PDX → ORD
Related
Based on US DOT Bureau of Transportation Statistics on-time data. Loading the full breakdown…