WN1688 HOU → STL

Southwest Airlines · Houston, TX to St. Louis, MO · 24 flights observed, 2026-04-09 to 2026-06-01 · 687 mi

This flight's reliability varies a lot by day of week — 100% on-time on Mondays vs. 50% on Thursdays.

WN1688 covers more than one route in the data window — the stats below are for HOU → STL, the one it has flown most recently. The others are linked under “Other routes”.

On-time arrival
79%
Median delay
-1 min
90th percentile
+28 min
Cancellation rate
0%

How often is WN1688 on time?

Across 24 flights on HOU → STL from 2026-04-09 to 2026-06-01, WN1688 arrived within 15 minutes of schedule 79% of the time. The median arrival delay was -1 min, and the worst 10% of flights arrived +28 min or later. 0% of flights were cancelled.

Delay distribution

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

ArrivalFlightsShare
Early / on-time1979%
16-30 min28%
31-60 min14%
61-120 min14%
2+ hrs14%

Performance by month

MonthFlightsOn-timeAvg delay
2026-041090%-3 min
2026-051369%+25 min
2026-061100%-19 min

Performance by day of week

DayFlightsOn-time
Mon8100%
TueNo data—
WedNo data—
Thu850%
Fri888%
SatNo data—
SunNo data—

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