OnTimeRoutes
B

Southwest Airlines DSM to DEN on-time performance

Southwest Airlines nonstop flights from Des Moines to Denver · Aug 2025 – Jul 2026

On-time arrivals
83%
arrived < 15 min late
Cancelled
0.5%
3 flights
Avg arrival delay
14 min
74 min when late
Rank on route
#2 of 4
route average 83% on time

Key facts

  • Southwest Airlines flights on DSM to DEN arrived on time 83% of the time in Aug 2025 – Jul 2026.
  • 0.5% were cancelled, and 7% arrived an hour or more late.
  • That ranks #2 of 4 airlines on this route, which averaged 83% on time overall.
  • The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (42%).

On-time trend by month

50%75%100%July 2025: 82.3% on time, 0.0% cancelledJul ’25August 2025: 77.0% on time, 0.0% cancelledAug ’25September 2025: 90.0% on time, 0.0% cancelledSep ’25October 2025: 90.6% on time, 0.0% cancelledOct ’25November 2025: 86.7% on time, 3.2% cancelledNov ’25December 2025: 83.9% on time, 0.0% cancelledDec ’25January 2026: 93.5% on time, 0.0% cancelledJan ’26February 2026: 92.9% on time, 0.0% cancelledFeb ’26March 2026: 91.7% on time, 4.0% cancelledMar ’26April 2026: 90.9% on time, 0.0% cancelledApr ’26May 2026: 73.7% on time, 0.0% cancelledMay ’26June 2026: 65.0% on time, 0.0% cancelledJun ’26July 2026: 74.2% on time, 0.0% cancelledJul ’26
On-time arrival rate by month. Hover a bar for exact figures.

Why this airline's flights were late

  • Airline (crew, maintenance, cleaning, fueling)42%
  • Air traffic control & airport congestion34%
  • Late-arriving aircraft16%
  • Extreme weather8%
  • Security0%

Other airlines on DSM to DEN

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

559 Southwest Airlines flights tracked on this route; 3 cancelled, 1 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.