Southwest Airlines SEA to MCI on-time performance
Southwest Airlines nonstop flights from Seattle to Kansas City · Aug 2025 – Jul 2026
On-time arrivals
33%
arrived < 15 min late
Cancelled
0.0%
0 flights
Avg arrival delay
41 min
61 min when late
Rank on route
#3 of 3
route average 80% on time
Key facts
- Southwest Airlines flights on SEA to MCI arrived on time 33% of the time in Aug 2025 – Jul 2026.
- 0% were cancelled, and 17% arrived an hour or more late.
- That ranks #3 of 3 airlines on this route, which averaged 80% on time overall.
- The largest source of delay minutes was late-arriving aircraft (76%).
On-time trend by month
Why this airline's flights were late
- Late-arriving aircraft76%
- Airline (crew, maintenance, cleaning, fueling)14%
- Air traffic control & airport congestion10%
- Extreme weather0%
- Security0%
Other airlines on SEA to MCI
- Alaska Airlines83% on time · 9 min avg delay
- Delta Air Lines76% on time · 19 min avg delay
Full SEA to MCI comparison →
Southwest Airlines on-time record across all routes →
18 Southwest Airlines flights tracked on this route; 0 cancelled, 0 diverted.
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. How we calculate this.