Flight OddsUA637 IAD → AUS
United Airlines · Washington, DC to Austin, TX · 265 flights observed, 2025-07-01 to 2026-06-30 · 1,297 mi
UA637 covers more than one route in the data window — the stats below are for IAD → AUS, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
94%
Median delay
-16 min
90th percentile
+5 min
Cancellation rate
0%
How often is UA637 on time?
Across 265 flights on IAD → AUS from 2025-07-01 to 2026-06-30, UA637 arrived within 15 minutes of schedule 94% of the time. The median arrival delay was -16 min, and the worst 10% of flights arrived +5 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 | 247 | 94% |
| 16-30 min | 7 | 3% |
| 31-60 min | 7 | 3% |
| 61-120 min | 3 | 1% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 31 | 94% | -7 min |
| 2025-08 | 27 | 85% | -5 min |
| 2025-09 | 26 | 96% | -18 min |
| 2025-10 | 27 | 93% | -18 min |
| 2025-11 | 25 | 100% | -17 min |
| 2025-12 | 29 | 90% | -12 min |
| 2026-01 | 17 | 94% | -15 min |
| 2026-02 | 21 | 90% | -20 min |
| 2026-03 | 6 | 100% | -26 min |
| 2026-04 | 30 | 100% | -16 min |
| 2026-05 | 20 | 90% | -9 min |
| 2026-06 | 5 | 100% | -10 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 44 | 91% |
| Tue | 36 | 94% |
| Wed | 38 | 95% |
| Thu | 43 | 98% |
| Fri | 43 | 93% |
| Sat | 19 | 89% |
| Sun | 41 | 93% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…