Flight OddsUnited Airlines · Chicago, IL to San Francisco, CA · 339 flights observed, 2025-07-01 to 2026-06-30 · 1,846 mi
UA2179 covers more than one route in the data window — the stats below are for ORD → SFO, the one it has flown most recently. The others are linked under “Other routes”.
How often is UA2179 on time?
Across 339 flights on ORD → SFO from 2025-07-01 to 2026-06-30, UA2179 arrived within 15 minutes of schedule 49% of the time. The median arrival delay was +16 min, and the worst 10% of flights arrived +102 min or later. 1% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 163 | 49% |
| 16-30 min | 56 | 17% |
| 31-60 min | 56 | 17% |
| 61-120 min | 36 | 11% |
| 2+ hrs | 24 | 7% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 30 | 43% | +26 min |
| 2025-08 | 31 | 61% | +35 min |
| 2025-09 | 30 | 63% | +10 min |
| 2025-10 | 6 | 100% | +1 min |
| 2025-11 | 28 | 39% | +30 min |
| 2025-12 | 31 | 35% | +37 min |
| 2026-01 | 30 | 60% | +17 min |
| 2026-02 | 28 | 46% | +46 min |
| 2026-03 | 31 | 58% | +27 min |
| 2026-04 | 29 | 48% | +33 min |
| 2026-05 | 31 | 35% | +41 min |
| 2026-06 | 30 | 33% | +44 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 49 | 45% |
| Tue | 50 | 62% |
| Wed | 48 | 40% |
| Thu | 46 | 41% |
| Fri | 47 | 47% |
| Sat | 46 | 57% |
| Sun | 49 | 49% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…