LAX → MDW Southwest Airlines

Southwest Airlines · Los Angeles, CA to Chicago, IL · 1,328 flights, 2025-07-01 to 2026-06-30 · aggregated across 63 flight numbers

This route runs much more reliably at some times of day than others — 92% on-time departing 6–9am vs. 42% departing 6–9pm.
On-time arrival
80%
Median delay
-3 min
90th percentile
+32 min
Cancellation rate
1%

How on-time is Southwest Airlines from LAX to MDW?

Across every Southwest Airlines flight number on LAX → MDW (1,328 flights, 2025-07-01 to 2026-06-30), 80% arrived within 15 minutes of schedule. Median arrival delay -3 min; the worst 10% ran +32 min or later. 1% were cancelled.

Delay distribution

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

ArrivalFlightsShare
Early / on-time1,05080%
16-30 min1219%
31-60 min907%
61-120 min393%
2+ hrs111%

Performance by month

MonthFlightsOn-timeAvg delay
2025-0714581%+3 min
2025-0811883%+3 min
2025-0911691%-2 min
2025-1011981%+0 min
2025-1110382%+4 min
2025-1211482%+5 min
2026-019785%+2 min
2026-028486%-1 min
2026-039967%+8 min
2026-0410176%+5 min
2026-0510675%+7 min
2026-0610973%+8 min

Performance by day of week

DayFlightsOn-time
Mon20077%
Tue19282%
Wed18387%
Thu19677%
Fri20178%
Sat15885%
Sun18176%

Based on US DOT Bureau of Transportation Statistics on-time data. Loading the full breakdown…