69% of LAX → STL flights arrived on time in June-August 2026 (227 flights). The most reliable was WN 4900, on time 88% of the time on this route. Morning flights did best (86%), afternoon flights worst (47%). Los Angeles (LAX): no delay reported. St. Louis (STL): no delay reported.
Best time of day to fly LAX → STL
| Morning (before noon) | |
| Afternoon (noon-5 PM) | |
| Evening (after 5 PM) |
Flights LAX → STL, most reliable first
| Flight | Departs | On time on this route | Cancelled |
|---|---|---|---|
| WN 4900 Southwest | 6:35 AM | 0% | |
| OO 5000 SkyWest | 6:13 PM | 1.1% | |
| WN 2400 Southwest | 1:30 PM | 0% |
LAX conditions · STL conditions · STL → LAX · Cancellations
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From BTS on-time data, June-August 2026; flights with 20+ trips on this route. On-time rates cover each flight number's whole day, which can include other legs. Departure times are local.