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Airport Reliability

DSM · Des Moines

Des Moines International Airport

82%
Departures within 15 minutes
15 min
Average departure delay
76%
Arrivals within 15 minutes
2.4%
Departures cancelled

Based on 18,750 departures and 18,754 arrivals. Data through May 2026.

What the data says

Morning flights do better here.

Departures from DSM departing between 3–6 AM arrived on time 88% of the time, versus 62% between 9 PM–12 AM.

Wednesday comes out ahead.

A small edge: 83% on time on Wednesdays against 79% on Sundays.

Ticking up lately.

Departures from DSM arrived on time 82% of the time over the last three months in the data, compared with 77% in the three months before that.

When DSM gets messy

On-time by departure window
  • 12–3 AM—(1 flights)
  • 3–6 AM88%(1669 flights)
  • 6–9 AM87%(4825 flights)
  • 9 AM–12 PM83%(3038 flights)
  • 12–3 PM82%(3294 flights)
  • 3–6 PM71%(3657 flights)
  • 6–9 PM67%(1726 flights)
  • 9 PM–12 AM62%(37 flights)
On-time by weekday
  • Mon79%(2864 flights)
  • Tue83%(2395 flights)
  • Wed83%(2489 flights)
  • Thu81%(2734 flights)
  • Fri80%(2853 flights)
  • Sat79%(2201 flights)
  • Sun79%(2711 flights)
On-time trend by month
82%
May

Jun 78% → May 82% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202578%1589
July 202577%1600
August 202581%1620
September 202586%1501
October 202584%1680
November 202582%1450
December 202570%1487
January 202680%1322
February 202682%1294
March 202680%1534
April 202683%1513
May 202682%1657

Airlines departing DSM

Busiest routes from DSM

Based on 18,750 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.