Flight OddsUA4425 IAD → STL
United Airlines · Washington, DC to St. Louis, MO · 6 flights observed, 2026-06-25 to 2026-06-30 · 696 mi
UA4425 covers more than one route in the data window — the stats below are for IAD → STL, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
50%
Median delay
+7 min
90th percentile
+135 min
Cancellation rate
0%
How often is UA4425 on time?
Across 6 flights on IAD → STL from 2026-06-25 to 2026-06-30, UA4425 arrived within 15 minutes of schedule 50% of the time. The median arrival delay was +7 min, and the worst 10% of flights arrived +135 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 | 3 | 50% |
| 16-30 min | 1 | 17% |
| 31-60 min | 0 | 0% |
| 61-120 min | 1 | 17% |
| 2+ hrs | 1 | 17% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-06 | 6 | 50% | +37 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 1 | 100% |
| Tue | 1 | 100% |
| Wed | No data | — |
| Thu | 1 | 0% |
| Fri | 1 | 0% |
| Sat | 1 | 100% |
| Sun | 1 | 0% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…