Flight OddsUA4001 IAD → SAT
United Airlines · Washington, DC to San Antonio, TX · 6 flights observed, 2026-02-14 to 2026-03-01 · 1,362 mi
UA4001 covers more than one route in the data window — the stats below are for IAD → SAT, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
100%
Median delay
-26 min
90th percentile
+2 min
Cancellation rate
0%
How often is UA4001 on time?
Across 6 flights on IAD → SAT from 2026-02-14 to 2026-03-01, UA4001 arrived within 15 minutes of schedule 100% of the time. The median arrival delay was -26 min, and the worst 10% of flights arrived +2 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 | 6 | 100% |
| 16-30 min | 0 | 0% |
| 31-60 min | 0 | 0% |
| 61-120 min | 0 | 0% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-02 | 5 | 100% | -23 min |
| 2026-03 | 1 | 100% | -21 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | No data | — |
| Tue | No data | — |
| Wed | No data | — |
| Thu | No data | — |
| Fri | No data | — |
| Sat | 3 | 100% |
| Sun | 3 | 100% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…