SEA → MCI Southwest Airlines

Southwest Airlines · Seattle, WA to Kansas City, MO · 22 flights, 2025-07-05 to 2026-06-27 · aggregated across 4 flight numbers

This route's reliability varies a lot by day of week — 80% on-time on Sundays vs. 41% on Saturdays.
On-time arrival
50%
Median delay
+16 min
90th percentile
+55 min
Cancellation rate
0%

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

Across every Southwest Airlines flight number on SEA → MCI (22 flights, 2025-07-05 to 2026-06-27), 50% arrived within 15 minutes of schedule. Median arrival delay +16 min; the worst 10% ran +55 min or later. 0% were cancelled.

Delay distribution

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

ArrivalFlightsShare
Early / on-time1150%
16-30 min418%
31-60 min523%
61-120 min00%
2+ hrs29%

Performance by month

MonthFlightsOn-timeAvg delay
2025-07875%+11 min
2025-08650%+15 min
2025-09450%+18 min
2026-0640%+102 min

Performance by day of week

DayFlightsOn-time
MonNo data—
TueNo data—
WedNo data—
ThuNo data—
FriNo data—
Sat1741%
Sun580%

WN flight numbers on SEA → MCI

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