Flight OddsWN4576 ONT → LAS
Southwest Airlines · Ontario, CA to Las Vegas, NV · 50 flights observed, 2026-04-07 to 2026-06-03 · 197 mi
WN4576 covers more than one route in the data window — the stats below are for ONT → LAS, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
54%
Median delay
+10 min
90th percentile
+78 min
Cancellation rate
0%
How often is WN4576 on time?
Across 50 flights on ONT → LAS from 2026-04-07 to 2026-06-03, WN4576 arrived within 15 minutes of schedule 54% of the time. The median arrival delay was +10 min, and the worst 10% of flights arrived +78 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 | 27 | 54% |
| 16-30 min | 5 | 10% |
| 31-60 min | 10 | 20% |
| 61-120 min | 5 | 10% |
| 2+ hrs | 3 | 6% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-04 | 21 | 62% | +11 min |
| 2026-05 | 26 | 46% | +33 min |
| 2026-06 | 3 | 67% | +10 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 8 | 50% |
| Tue | 9 | 89% |
| Wed | 9 | 100% |
| Thu | 8 | 38% |
| Fri | 8 | 0% |
| Sat | No data | — |
| Sun | 8 | 38% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…