Flight OddsWN4540 LAS → ONT
Southwest Airlines · Las Vegas, NV to Ontario, CA · 14 flights observed, 2025-11-25 to 2026-01-04 · 197 mi
WN4540 covers more than one route in the data window — the stats below are for LAS → ONT, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
86%
Median delay
+4 min
90th percentile
+18 min
Cancellation rate
0%
How often is WN4540 on time?
Across 14 flights on LAS → ONT from 2025-11-25 to 2026-01-04, WN4540 arrived within 15 minutes of schedule 86% of the time. The median arrival delay was +4 min, and the worst 10% of flights arrived +18 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 | 12 | 86% |
| 16-30 min | 1 | 7% |
| 31-60 min | 1 | 7% |
| 61-120 min | 0 | 0% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-11 | 3 | 100% | +6 min |
| 2025-12 | 9 | 89% | +7 min |
| 2026-01 | 2 | 50% | +3 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 3 | 100% |
| Tue | 3 | 100% |
| Wed | 1 | 100% |
| Thu | No data | — |
| Fri | 3 | 67% |
| Sat | No data | — |
| Sun | 4 | 75% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…