Flight OddsUnited Airlines · Washington, DC to San Antonio, TX · 280 flights observed, 2025-07-01 to 2026-06-30 · 1,362 mi
UA1789 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”.
How often is UA1789 on time?
Across 280 flights on IAD → SAT from 2025-07-01 to 2026-06-30, UA1789 arrived within 15 minutes of schedule 95% of the time. The median arrival delay was -17 min, and the worst 10% of flights arrived +4 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 | 263 | 95% |
| 16-30 min | 6 | 2% |
| 31-60 min | 6 | 2% |
| 61-120 min | 2 | 1% |
| 2+ hrs | 1 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 27 | 96% | -10 min |
| 2025-08 | 24 | 96% | -10 min |
| 2025-09 | 21 | 95% | -5 min |
| 2025-10 | 24 | 100% | -17 min |
| 2025-11 | 30 | 93% | -18 min |
| 2025-12 | 27 | 89% | -11 min |
| 2026-01 | 16 | 81% | -5 min |
| 2026-02 | 18 | 89% | -18 min |
| 2026-03 | 26 | 100% | -29 min |
| 2026-04 | 20 | 100% | -21 min |
| 2026-05 | 19 | 100% | -12 min |
| 2026-06 | 26 | 92% | -12 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 52 | 96% |
| Tue | 34 | 97% |
| Wed | 28 | 93% |
| Thu | 51 | 96% |
| Fri | 52 | 94% |
| Sat | 15 | 87% |
| Sun | 46 | 93% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…