Flight OddsUA4454 STL → IAD
United Airlines · St. Louis, MO to Washington, DC · 364 flights observed, 2025-07-01 to 2026-06-30 · 696 mi
UA4454 covers more than one route in the data window — the stats below are for STL → IAD, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
71%
Median delay
-5 min
90th percentile
+135 min
Cancellation rate
1%
How often is UA4454 on time?
Across 364 flights on STL → IAD from 2025-07-01 to 2026-06-30, UA4454 arrived within 15 minutes of schedule 71% of the time. The median arrival delay was -5 min, and the worst 10% of flights arrived +135 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 | 254 | 71% |
| 16-30 min | 20 | 6% |
| 31-60 min | 26 | 7% |
| 61-120 min | 17 | 5% |
| 2+ hrs | 43 | 12% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 30 | 67% | +22 min |
| 2025-08 | 31 | 65% | +28 min |
| 2025-09 | 30 | 83% | +26 min |
| 2025-10 | 31 | 71% | +24 min |
| 2025-11 | 29 | 55% | +48 min |
| 2025-12 | 30 | 60% | +135 min |
| 2026-01 | 29 | 62% | +76 min |
| 2026-02 | 28 | 79% | +6 min |
| 2026-03 | 31 | 65% | +27 min |
| 2026-04 | 30 | 77% | +18 min |
| 2026-05 | 31 | 71% | +16 min |
| 2026-06 | 30 | 93% | -12 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 52 | 71% |
| Tue | 52 | 73% |
| Wed | 51 | 69% |
| Thu | 52 | 75% |
| Fri | 52 | 67% |
| Sat | 51 | 71% |
| Sun | 50 | 68% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…