Flight OddsUnited Airlines · Washington, DC to Las Vegas, NV · 248 flights observed, 2025-10-26 to 2026-06-30 · 2,065 mi
UA2156 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”.
How often is UA2156 on time?
Across 248 flights on IAD → LAS from 2025-10-26 to 2026-06-30, UA2156 arrived within 15 minutes of schedule 91% of the time. The median arrival delay was -12 min, and the worst 10% of flights arrived +15 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 | 225 | 91% |
| 16-30 min | 11 | 4% |
| 31-60 min | 7 | 3% |
| 61-120 min | 3 | 1% |
| 2+ hrs | 1 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-10 | 6 | 83% | -1 min |
| 2025-11 | 30 | 93% | -11 min |
| 2025-12 | 31 | 94% | -10 min |
| 2026-01 | 30 | 87% | -5 min |
| 2026-02 | 28 | 93% | -12 min |
| 2026-03 | 31 | 94% | -16 min |
| 2026-04 | 30 | 90% | -7 min |
| 2026-05 | 31 | 90% | -9 min |
| 2026-06 | 30 | 90% | +2 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 36 | 81% |
| Tue | 36 | 97% |
| Wed | 35 | 97% |
| Thu | 35 | 89% |
| Fri | 35 | 91% |
| Sat | 35 | 94% |
| Sun | 35 | 89% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…