Flight OddsUA721 IAD → LAS
United Airlines · Washington, DC to Las Vegas, NV · 18 flights observed, 2026-02-12 to 2026-03-04 · 2,065 mi
UA721 covers more than one route in the data window — the stats below are for IAD → LAS, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
72%
Median delay
-6 min
90th percentile
+100 min
Cancellation rate
0%
How often is UA721 on time?
Across 18 flights on IAD → LAS from 2026-02-12 to 2026-03-04, UA721 arrived within 15 minutes of schedule 72% of the time. The median arrival delay was -6 min, and the worst 10% of flights arrived +100 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 | 13 | 72% |
| 16-30 min | 2 | 11% |
| 31-60 min | 0 | 0% |
| 61-120 min | 1 | 6% |
| 2+ hrs | 2 | 11% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-02 | 14 | 71% | +13 min |
| 2026-03 | 4 | 75% | +24 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 3 | 67% |
| Tue | 3 | 67% |
| Wed | 3 | 100% |
| Thu | 3 | 67% |
| Fri | 3 | 67% |
| Sat | No data | — |
| Sun | 3 | 67% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…