Flight OddsUA1231 ORD → JAX
United Airlines · Chicago, IL to Jacksonville, FL · 23 flights observed, 2026-01-08 to 2026-02-08 · 864 mi
UA1231 covers more than one route in the data window — the stats below are for ORD → JAX, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
78%
Median delay
-11 min
90th percentile
+69 min
Cancellation rate
0%
How often is UA1231 on time?
Across 23 flights on ORD → JAX from 2026-01-08 to 2026-02-08, UA1231 arrived within 15 minutes of schedule 78% of the time. The median arrival delay was -11 min, and the worst 10% of flights arrived +69 min or later. 0% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 18 | 78% |
| 16-30 min | 0 | 0% |
| 31-60 min | 1 | 4% |
| 61-120 min | 4 | 17% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-01 | 17 | 76% | +6 min |
| 2026-02 | 6 | 83% | +3 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 4 | 50% |
| Tue | No data | — |
| Wed | No data | — |
| Thu | 5 | 80% |
| Fri | 4 | 100% |
| Sat | 5 | 80% |
| Sun | 5 | 80% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…