WN1256 CLE → STL

Southwest Airlines · Cleveland, OH to St. Louis, MO · 58 flights observed, 2026-04-07 to 2026-06-03 · 487 mi

This flight has a strong track record — on time 95% of the time, with a low cancellation rate.

WN1256 covers more than one route in the data window — the stats below are for CLE → STL, the one it has flown most recently. The others are linked under “Other routes”.

On-time arrival
95%
Median delay
-12 min
90th percentile
+3 min
Cancellation rate
0%

How often is WN1256 on time?

Across 58 flights on CLE → STL from 2026-04-07 to 2026-06-03, WN1256 arrived within 15 minutes of schedule 95% of the time. The median arrival delay was -12 min, and the worst 10% of flights arrived +3 min or later. 0% of flights were cancelled.

Delay distribution

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

ArrivalFlightsShare
Early / on-time5595%
16-30 min12%
31-60 min12%
61-120 min00%
2+ hrs12%

Performance by month

MonthFlightsOn-timeAvg delay
2026-042496%-5 min
2026-053197%-11 min
2026-06367%+1 min

Performance by day of week

DayFlightsOn-time
Mon888%
Tue9100%
Wed9100%
Thu8100%
Fri8100%
Sat888%
Sun888%

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