Airports › Des Moines (DSM) › May 2025
Airport month · May 2025
Des Moines International in May 2025
BTS: A flight is counted as on time if it arrived less than 15 minutes after its scheduled time. Only carriers with at least 0.5 percent of domestic scheduled passenger revenue report.
In May 2025, reporting carriers scheduled 1,218 domestic departures from Des Moines International (DSM). 80.8% left less than 15 minutes late and 78.6% reached their destination on time; 0.7% were cancelled.
Nationally that month, 76.7% of flights departed on time and 75.4% arrived on time, so DSM departures were 4.1 points above the national departure figure.
A year earlier, in May 2024, the airport had 1,254 departures with 76.3% leaving on time: a change of +4.5 points, with flights down 3%.
Flights arriving at DSM that month were on time 74.0% of the time (1,217 scheduled arrivals).
Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 35%, late-arriving aircraft 32% and national aviation system 23%.
- On time 78.6%
- Arrived 15+ minutes late 20.5%
- Cancelled 0.7%
- Diverted 0.2%
May 2025 against a year earlier, the airport's year and the nation
| Measure | May 2025 | May 2024 | DSM, 12 months to Jul 2026 | All reported flights, May 2025 |
|---|---|---|---|---|
| Departed on time | 80.8% | 76.3% | 78.5% | 76.7% |
| Arrived on time | 78.6% | 74.7% | 77.3% | 75.4% |
| Cancelled | 0.7% | 1.8% | 2.5% | 1.0% |
| Average departure delay (late minutes only) | 16.2 min | 19.8 min | 20.8 min | 17.5 min |
| Scheduled departures a day | 41 | 42 | 43 | 20,188 |
| Scheduled departures | 1,218 | 1,254 | 15,584 | 605,648 |
Airlines that month
| Reporting carrier | Flights | Share | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| AA American Airlines | 211 | 17% | 72.0% | 14.8 min | 2.4% |
| UA United Airlines | 196 | 16% | 74.5% | 10.0 min | 1.0% |
| OO SkyWest Airlines | 173 | 14% | 82.1% | 3.2 min | 0.0% |
| G4 Allegiant Air | 164 | 13% | 84.1% | -3.7 min | 0.0% |
| WN Southwest Airlines | 149 | 12% | 83.2% | -0.8 min | 0.0% |
| DL Delta Air Lines | 118 | 10% | 76.3% | 25.9 min | 0.0% |
| MQ Envoy Air | 73 | 6% | 78.1% | 11.8 min | 1.4% |
| YX Republic Airline | 62 | 5% | 87.1% | -1.5 min | 0.0% |
| OH PSA Airlines | 61 | 5% | 73.8% | 11.3 min | 1.6% |
| F9 Frontier Airlines | 11 | 1% | 81.8% | 1.7 min | 0.0% |
Busiest routes that month
| Route | Cities | Flights | On time | Avg arrival delay | Cancelled |
|---|---|---|---|---|---|
| DSM–ORD | Des Moines to Chicago | 269 | 79.2% | 8.0 min | 0.4% |
| DSM–DEN | Des Moines to Denver | 190 | 76.8% | 7.5 min | 1.1% |
| DSM–ATL | Des Moines to Atlanta | 118 | 76.3% | 25.9 min | 0.0% |
| DSM–PHX | Des Moines to Phoenix | 116 | 78.4% | -0.3 min | 0.0% |
| DSM–DFW | Des Moines to Dallas/Fort Worth | 93 | 64.5% | 29.1 min | 3.2% |
| DSM–CLT | Des Moines to Charlotte | 62 | 75.8% | 9.9 min | 3.2% |
| DSM–DCA | Des Moines to Washington | 61 | 73.8% | 11.3 min | 1.6% |
| DSM–STL | Des Moines to St. Louis | 56 | 85.7% | -1.2 min | 0.0% |
| DSM–LAS | Des Moines to Las Vegas | 47 | 87.2% | -5.7 min | 0.0% |
| DSM–IAH | Des Moines to Houston | 31 | 96.8% | -9.7 min | 0.0% |
| DSM–LGA | Des Moines to New York | 27 | 77.8% | 1.9 min | 0.0% |
| DSM–PIE | Des Moines to St. Petersburg | 22 | 81.8% | -2.2 min | 0.0% |
By scheduled departure hour
Delay causes
Questions and answers
How many flights left DSM on time in May 2025?
80.8% of 1,218 scheduled domestic departures left less than 15 minutes late, and 78.6% reached their destination on time. The national figures that month were 76.7% and 75.4%.
How does that compare with a year earlier?
In May 2024, 76.3% of 1,254 departures left on time and 1.8% were cancelled, against 80.8% and 0.7% in May 2025.
Provenance
Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for May 2025; public domain. Domestic scheduled flights by reporting carriers, totals and averages only. The site's data runs through July 2026. Full record for DSM · methodology · corrections.