Flight OddsUA312 ORD → CHS
United Airlines · Chicago, IL to Charleston, SC · 134 flights observed, 2025-07-01 to 2026-01-05 · 760 mi
UA312 covers more than one route in the data window — the stats below are for ORD → CHS, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
62%
Median delay
+8 min
90th percentile
+75 min
Cancellation rate
1%
How often is UA312 on time?
Across 134 flights on ORD → CHS from 2025-07-01 to 2026-01-05, UA312 arrived within 15 minutes of schedule 62% of the time. The median arrival delay was +8 min, and the worst 10% of flights arrived +75 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 | 83 | 62% |
| 16-30 min | 13 | 10% |
| 31-60 min | 17 | 13% |
| 61-120 min | 10 | 8% |
| 2+ hrs | 10 | 8% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 30 | 47% | +49 min |
| 2025-08 | 17 | 47% | +37 min |
| 2025-09 | 6 | 83% | +0 min |
| 2025-10 | 31 | 71% | +19 min |
| 2025-11 | 29 | 76% | +8 min |
| 2025-12 | 15 | 60% | +24 min |
| 2026-01 | 5 | 60% | +3 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 20 | 65% |
| Tue | 18 | 83% |
| Wed | 18 | 67% |
| Thu | 19 | 42% |
| Fri | 19 | 68% |
| Sat | 19 | 58% |
| Sun | 20 | 55% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…