Flight OddsSFO → ORD United Airlines
United Airlines · San Francisco, CA to Chicago, IL · 3,815 flights, 2025-07-01 to 2026-06-30 · aggregated across 79 flight numbers
On-time arrival
79%
Median delay
-7 min
90th percentile
+44 min
Cancellation rate
1%
How on-time is United Airlines from SFO to ORD?
Across every United Airlines flight number on SFO → ORD (3,815 flights, 2025-07-01 to 2026-06-30), 79% arrived within 15 minutes of schedule. Median arrival delay -7 min; the worst 10% ran +44 min or later. 1% were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 2,967 | 79% |
| 16-30 min | 266 | 7% |
| 31-60 min | 236 | 6% |
| 61-120 min | 162 | 4% |
| 2+ hrs | 125 | 3% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 311 | 74% | +15 min |
| 2025-08 | 309 | 79% | +11 min |
| 2025-09 | 312 | 88% | -4 min |
| 2025-10 | 337 | 83% | -2 min |
| 2025-11 | 312 | 78% | +15 min |
| 2025-12 | 304 | 79% | +5 min |
| 2026-01 | 276 | 75% | +7 min |
| 2026-02 | 251 | 86% | -4 min |
| 2026-03 | 295 | 79% | +4 min |
| 2026-04 | 335 | 79% | +4 min |
| 2026-05 | 368 | 78% | +5 min |
| 2026-06 | 346 | 72% | +12 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 554 | 74% |
| Tue | 529 | 86% |
| Wed | 512 | 79% |
| Thu | 552 | 78% |
| Fri | 548 | 78% |
| Sat | 512 | 81% |
| Sun | 549 | 77% |
UA flight numbers on SFO → ORD
Related
Based on US DOT Bureau of Transportation Statistics on-time data. Loading the full breakdown…