Southwest Airlines BOS to MCI on-time performance
Southwest Airlines nonstop flights from Boston to Kansas City · Aug 2025 – Jul 2026
On-time arrivals
54%
arrived < 15 min late
Cancelled
0.0%
0 flights
Avg arrival delay
23 min
48 min when late
Rank on route
#3 of 3
route average 78% on time
Key facts
- Southwest Airlines flights on BOS to MCI arrived on time 54% of the time in Aug 2025 – Jul 2026.
- 0% were cancelled, and 11% arrived an hour or more late.
- That ranks #3 of 3 airlines on this route, which averaged 78% on time overall.
- The largest source of delay minutes was late-arriving aircraft (53%).
On-time trend by month
Why this airline's flights were late
- Late-arriving aircraft53%
- Air traffic control & airport congestion31%
- Airline (crew, maintenance, cleaning, fueling)16%
- Extreme weather0%
- Security0%
Other airlines on BOS to MCI
- Delta Air Lines77% on time · 18 min avg delay
- Republic Airways84% on time · 9 min avg delay
Full BOS to MCI comparison →
Southwest Airlines on-time record across all routes →
57 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.