FlightRecord

Des Moines International Airport (DSM): Delays & On-Time Performance

Data through July 2026

Des Moines International Airport (DSM) is a tale of two seasons: departures ran 90% on-time in September 2024 but sank to 71% in December 2025. Across the year it averages 82% against a national 78%, over roughly 43 departures a day to 37 destinations.

Departures on-time
82%
left <15 min late
Avg dep delay
19 min
Arrivals on-time
76%
Cancelled
2.1%
Destinations
37
nonstop
Airlines
11

Plan your departure from DSM

The choices most likely to improve your odds, based on this airport’s historical record.

Best departure time
Around 6 a.m.
90% on-time
Best day to fly
Tuesday
83% on-time
Most reliable airline here
Endeavor Air
88% on-time from DSM
Cancellation risk
2.1%
above the US average
Check routes from DSM ↓Compare nearby airports ↓

Monthly on-time trend

Monthly departure on-time percentage at DSM50%75%100%August 2024: 81% on-time (1,315 flights)81Aug 2024September 2024: 90% on-time (1,217 flights)90October 2024: 89% on-time (1,332 flights)89November 2024: 90% on-time (1,259 flights)90Nov 2024December 2024: 80% on-time (1,271 flights)80January 2025: 82% on-time (1,051 flights)82February 2025: 83% on-time (971 flights)83Feb 2025March 2025: 84% on-time (1,212 flights)84April 2025: 87% on-time (1,087 flights)87May 2025: 81% on-time (1,218 flights)81May 2025June 2025: 78% on-time (1,331 flights)78July 2025: 78% on-time (1,367 flights)78August 2025: 81% on-time (1,372 flights)81Aug 2025September 2025: 88% on-time (1,244 flights)88October 2025: 86% on-time (1,391 flights)86November 2025: 82% on-time (1,267 flights)82Nov 2025December 2025: 71% on-time (1,262 flights)71January 2026: 78% on-time (1,122 flights)78February 2026: 81% on-time (1,095 flights)81Feb 2026March 2026: 78% on-time (1,371 flights)78April 2026: 85% on-time (1,307 flights)85May 2026: 83% on-time (1,382 flights)83May 2026June 2026: 76% on-time (1,356 flights)76July 2026: 76% on-time (1,415 flights)76

Best time of day to depart from DSM

On-time percentage by scheduled departure hour at DSM5 a.m.: 89% on-time (3,669 flights)56 a.m.: 90% on-time (3,725 flights)67 a.m.: 87% on-time (2,510 flights)78 a.m.: 88% on-time (1,951 flights)89 a.m.: 85% on-time (1,532 flights)910 a.m.: 84% on-time (607 flights)1011 a.m.: 85% on-time (2,439 flights)1112 p.m.: 82% on-time (1,245 flights)121 p.m.: 80% on-time (2,229 flights)132 p.m.: 79% on-time (2,343 flights)143 p.m.: 73% on-time (2,537 flights)154 p.m.: 69% on-time (1,141 flights)165 p.m.: 75% on-time (1,976 flights)176 p.m.: 75% on-time (2,596 flights)187 p.m.: 58% on-time (715 flights)198 p.m.: 71% on-time (259 flights)20scheduled departure hour

By day of week

DayOn-timeAvg delay
Monday80%19 min
Tuesdaybest83%16 min
Wednesday82%17 min
Thursday79%22 min
Friday79%20 min
Saturday80%20 min
Sunday78%20 min

Next: compare the busiest routes from DSM ↓

Busiest routes from DSM

RouteFlights/12moOn-timeAvg delay
DSM → ORD (Chicago)3,41176%23 min
DSM → DEN (Denver)2,33083%15 min
DSM → DFW (Dallas/Fort Worth)1,43872%28 min
DSM → ATL (Atlanta)1,25287%15 min
DSM → PHX (Phoenix)1,06484%19 min
DSM → CLT (Charlotte)80981%25 min
DSM → DCA (Washington)70277%21 min
DSM → LAS (Las Vegas)59582%16 min
DSM → STL (St. Louis)40389%7 min
DSM → PHL (Philadelphia)35078%28 min
DSM → IAH (Houston)34688%10 min
DSM → LAX (Los Angeles)30371%37 min
DSM → MDW (Chicago)29080%14 min
DSM → LGA (New York)26183%14 min
DSM → SFB (Sanford)20575%21 min
DSM → PGD (Punta Gorda)18876%21 min
DSM → PIE (St. Petersburg)18673%24 min
DSM → AZA (Phoenix)18074%30 min
DSM → MIA (Miami)17984%14 min
DSM → BNA (Nashville)16582%21 min
DSM → SNA (Santa Ana)11186%14 min
DSM → AUS (Austin)10571%23 min

Compare airlines departing DSM ↓

Where flights into DSM come from

RouteFlights/12moOn-timeAvg delay
ORD (Chicago) → DSM3,41373%21 min
DEN (Denver) → DSM2,33179%15 min
DFW (Dallas/Fort Worth) → DSM1,43667%31 min
ATL (Atlanta) → DSM1,25183%12 min
PHX (Phoenix) → DSM1,06781%11 min
CLT (Charlotte) → DSM80971%21 min
DCA (Washington) → DSM70272%23 min
LAS (Las Vegas) → DSM59578%14 min

Most reliable routes

  1. DSM → STL89%
  2. DSM → IAH88%
  3. DSM → ATL87%
  4. DSM → SNA86%
  5. DSM → MIA84%

Most delay-prone routes

  1. DSM → AUS71%
  2. DSM → LAX71%
  3. DSM → DFW72%
  4. DSM → PIE73%
  5. DSM → AZA74%

What causes delays at DSM

Share of total delay minutes by cause, as reported by carriers to the US DOT, weighted across routes departing DSM.

  • Late-arriving aircraft32%
  • Airline operations38%
  • National airspace system20%
  • Weather10%

Alternative airports near Des Moines

Other airports within 120 miles, compared on departure reliability.

AirportDistanceOn-time departuresAvg delay
FOD — Fort Dodge Regional Airport76 mi78%29 min
ALO — Waterloo Regional Airport96 mi79%26 min
CID — The Eastern Iowa Airport103 mi80%21 min
MCW — Mason City Municipal Airport114 mi80%28 min
OMA — Eppley Airfield117 mi82%15 min

Compare the airport-level record first, then check the exact route you plan to book.

Airline performance at DSM

AirlineOn-time departuresAvg delayFlights
Endeavor Air88%11 min1,298
United Airlines86%14 min4,229
Delta Air Lines85%15 min2,594
Republic Airways84%13 min2,258
Envoy Air83%13 min2,346
Southwest Airlines83%11 min3,707
SkyWest Airlines82%22 min4,179
PSA Airlines81%25 min1,653
Frontier Airlines78%21 min432
Allegiant Air77%21 min4,135
American Airlines76%30 min4,735

Frequently asked questions

How often are flights delayed at DSM?
18% of departures from Des Moines International Airport left 15+ minutes late between 2024-07 and 2026-07, with an average departure delay of 19 minutes. The national on-time average over the same period was 78%.
What is the best time of day to depart from DSM?
Flights scheduled around 6 a.m. depart on time 90% of the time at DSM, versus 58% around 7 p.m.. Booking before noon is the usual rule of thumb here.
What is the worst month for delays at DSM?
In this dataset, December 2025 was the weakest month at DSM, with 71% of departures on time.
How often are flights cancelled at DSM?
2.1% of scheduled departures from DSM were cancelled in this period, compared with a national rate of 1.6%.

Popular route pages from this airport

Related guides

Based on 31,566 flights, 2024-07–2026-07. Source: US DOT Bureau of Transportation Statistics. Updated 2026-09-28.