WN4129 STL → TPA

Southwest Airlines · St. Louis, MO to Tampa, FL · 35 flights observed, 2025-07-01 to 2025-08-04 · 869 mi

This flight's reliability varies a lot by day of week — 100% on-time on Wednesdays vs. 60% on Tuesdays.

WN4129 covers more than one route in the data window — the stats below are for STL → TPA, the one it has flown most recently. The others are linked under “Other routes”.

On-time arrival
89%
Median delay
-1 min
90th percentile
+17 min
Cancellation rate
0%

How often is WN4129 on time?

Across 35 flights on STL → TPA from 2025-07-01 to 2025-08-04, WN4129 arrived within 15 minutes of schedule 89% of the time. The median arrival delay was -1 min, and the worst 10% of flights arrived +17 min or later. 0% of flights were cancelled.

Delay distribution

Arrival delay for completed flights (excludes cancellations and diversions).

ArrivalFlightsShare
Early / on-time3189%
16-30 min13%
31-60 min26%
61-120 min13%
2+ hrs00%

Performance by month

MonthFlightsOn-timeAvg delay
2025-073187%+4 min
2025-084100%-5 min

Performance by day of week

DayFlightsOn-time
Mon580%
Tue560%
Wed5100%
Thu580%
Fri5100%
Sat5100%
Sun5100%

Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…