Flight OddsUA631 ORD → JAC
United Airlines · Chicago, IL to Jackson, WY · 37 flights observed, 2025-08-19 to 2025-09-24 · 1,162 mi
UA631 covers more than one route in the data window — the stats below are for ORD → JAC, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
78%
Median delay
-2 min
90th percentile
+34 min
Cancellation rate
0%
How often is UA631 on time?
Across 37 flights on ORD → JAC from 2025-08-19 to 2025-09-24, UA631 arrived within 15 minutes of schedule 78% of the time. The median arrival delay was -2 min, and the worst 10% of flights arrived +34 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 | 29 | 78% |
| 16-30 min | 3 | 8% |
| 31-60 min | 3 | 8% |
| 61-120 min | 0 | 0% |
| 2+ hrs | 2 | 5% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-08 | 13 | 85% | +3 min |
| 2025-09 | 24 | 75% | +12 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 5 | 100% |
| Tue | 6 | 83% |
| Wed | 6 | 100% |
| Thu | 5 | 60% |
| Fri | 5 | 60% |
| Sat | 5 | 60% |
| 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…