Flight OddsWN4420 STL → AUS
Southwest Airlines · St. Louis, MO to Austin, TX · 59 flights observed, 2025-11-02 to 2026-01-05 · 721 mi
WN4420 covers more than one route in the data window — the stats below are for STL → AUS, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
69%
Median delay
+1 min
90th percentile
+39 min
Cancellation rate
0%
How often is WN4420 on time?
Across 59 flights on STL → AUS from 2025-11-02 to 2026-01-05, WN4420 arrived within 15 minutes of schedule 69% of the time. The median arrival delay was +1 min, and the worst 10% of flights arrived +39 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 | 41 | 69% |
| 16-30 min | 9 | 15% |
| 31-60 min | 7 | 12% |
| 61-120 min | 1 | 2% |
| 2+ hrs | 1 | 2% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-11 | 25 | 84% | -7 min |
| 2025-12 | 29 | 55% | +19 min |
| 2026-01 | 5 | 80% | 0 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 10 | 80% |
| Tue | 9 | 56% |
| Wed | 9 | 67% |
| Thu | 8 | 75% |
| Fri | 9 | 89% |
| Sat | 5 | 100% |
| Sun | 9 | 33% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…