OnTimeRoutes
C

Southwest Airlines MCI to DEN on-time performance

Southwest Airlines nonstop flights from Kansas City to Denver · Aug 2025 – Jul 2026

On-time arrivals
74%
arrived < 15 min late
Cancelled
0.6%
13 flights
Avg arrival delay
16 min
56 min when late
Rank on route
#4 of 4
route average 77% on time

Key facts

  • Southwest Airlines flights on MCI to DEN arrived on time 74% of the time in Aug 2025 – Jul 2026.
  • 0.6% were cancelled, and 8% arrived an hour or more late.
  • That ranks #4 of 4 airlines on this route, which averaged 77% on time overall.
  • The largest source of delay minutes was late-arriving aircraft (44%).

On-time trend by month

40%70%100%July 2025: 57.7% on time, 2.3% cancelledJul ’25August 2025: 62.8% on time, 0.0% cancelledAug ’25September 2025: 72.7% on time, 0.0% cancelledSep ’25October 2025: 71.7% on time, 0.0% cancelledOct ’25November 2025: 80.6% on time, 0.5% cancelledNov ’25December 2025: 69.8% on time, 1.6% cancelledDec ’25January 2026: 87.0% on time, 0.6% cancelledJan ’26February 2026: 83.1% on time, 1.2% cancelledFeb ’26March 2026: 76.8% on time, 1.6% cancelledMar ’26April 2026: 76.6% on time, 0.5% cancelledApr ’26May 2026: 75.5% on time, 0.0% cancelledMay ’26June 2026: 68.3% on time, 0.4% cancelledJun ’26July 2026: 73.0% on time, 0.4% cancelledJul ’26
On-time arrival rate by month. Hover a bar for exact figures.

Why this airline's flights were late

  • Late-arriving aircraft44%
  • Air traffic control & airport congestion33%
  • Airline (crew, maintenance, cleaning, fueling)18%
  • Extreme weather5%
  • Security0%

Other airlines on MCI to DEN

Full MCI to DEN comparison →
Southwest Airlines on-time record across all routes →

2,356 Southwest Airlines flights tracked on this route; 13 cancelled, 10 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.