WN3591 SAT → MDW

Southwest Airlines · San Antonio, TX to Chicago, IL · 46 flights observed, 2025-11-02 to 2026-01-05 · 1,036 mi

This flight runs much more reliably at some times of day than others — 96% on-time departing 6–9am vs. 53% departing 3–6pm.

WN3591 covers more than one route in the data window — the stats below are for SAT → MDW, the one it has flown most recently. The others are linked under “Other routes”.

On-time arrival
80%
Median delay
-3 min
90th percentile
+34 min
Cancellation rate
0%

How often is WN3591 on time?

Across 46 flights on SAT → MDW from 2025-11-02 to 2026-01-05, WN3591 arrived within 15 minutes of schedule 80% of the time. The median arrival delay was -3 min, and the worst 10% of flights arrived +34 min or later. 0% of flights were cancelled.

Delay distribution

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

ArrivalFlightsShare
Early / on-time3680%
16-30 min37%
31-60 min49%
61-120 min24%
2+ hrs00%

Performance by month

MonthFlightsOn-timeAvg delay
2025-112387%+3 min
2025-122075%+6 min
2026-01250%+19 min

Performance by day of week

DayFlightsOn-time
Mon771%
Tue683%
Wed8100%
Thu888%
Fri683%
Sat4100%
Sun633%

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