Flight OddsUA4397 ORD → DAY
United Airlines · Chicago, IL to Dayton, OH · 17 flights observed, 2026-03-05 to 2026-03-27 · 240 mi
UA4397 covers more than one route in the data window — the stats below are for ORD → DAY, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
33%
Median delay
+27 min
90th percentile
+144 min
Cancellation rate
12%
How often is UA4397 on time?
Across 17 flights on ORD → DAY from 2026-03-05 to 2026-03-27, UA4397 arrived within 15 minutes of schedule 33% of the time. The median arrival delay was +27 min, and the worst 10% of flights arrived +144 min or later. 12% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 5 | 33% |
| 16-30 min | 3 | 20% |
| 31-60 min | 2 | 13% |
| 61-120 min | 2 | 13% |
| 2+ hrs | 3 | 20% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-03 | 15 | 33% | +50 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 3 | 33% |
| Tue | No data | — |
| Wed | No data | — |
| Thu | 4 | 50% |
| Fri | 3 | 67% |
| Sat | 3 | 0% |
| Sun | 2 | 0% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…