MCI → SAN Southwest Airlines

Southwest Airlines · Kansas City, MO to San Diego, CA · 390 flights, 2025-07-01 to 2026-06-30 · aggregated across 25 flight numbers

This route runs much more reliably at some times of day than others — 100% on-time departing 3–6am vs. 35% departing 6–9pm.
On-time arrival
78%
Median delay
0 min
90th percentile
+36 min
Cancellation rate
0%

How on-time is Southwest Airlines from MCI to SAN?

Across every Southwest Airlines flight number on MCI → SAN (390 flights, 2025-07-01 to 2026-06-30), 78% arrived within 15 minutes of schedule. Median arrival delay 0 min; the worst 10% ran +36 min or later. 0% were cancelled.

Delay distribution

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

ArrivalFlightsShare
Early / on-time30478%
16-30 min3810%
31-60 min318%
61-120 min144%
2+ hrs21%

Performance by month

MonthFlightsOn-timeAvg delay
2025-073985%+4 min
2025-083388%+4 min
2025-093087%+6 min
2025-103171%+11 min
2025-113385%+8 min
2025-123373%+6 min
2026-013284%-5 min
2026-022879%0 min
2026-033491%-4 min
2026-043174%+7 min
2026-053171%+8 min
2026-063450%+20 min

Performance by day of week

DayFlightsOn-time
Mon5281%
Tue5385%
Wed5287%
Thu5277%
Fri5267%
Sat6676%
Sun6276%

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