Des Moines International in April 2025

85.9%departed on time

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 April 2025, reporting carriers scheduled 1,087 domestic departures from Des Moines International (DSM). 85.9% left less than 15 minutes late and 83.4% reached their destination on time; 1.1% were cancelled.

Nationally that month, 80.6% of flights departed on time and 79.5% arrived on time, so DSM departures were 5.3 points above the national departure figure.

A year earlier, in April 2024, the airport had 1,264 departures with 86.8% leaving on time: a change of −0.9 points, with flights down 14%.

Flights arriving at DSM that month were on time 75.6% of the time (1,085 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 33%, air carrier 32% and national aviation system 27%.

On time 83.4%
Arrived 15+ minutes late 15.3%
Cancelled 1.1%
Diverted 0.2%

Every scheduled departure from DSM in April 2025, judged by arrival at the destination.

April 2025 against a year earlier, the airport's year and the nation

Measure	Apr 2025	Apr 2024	DSM, 12 months to Jul 2026	All reported flights, Apr 2025
Departed on time	85.9%	86.8%	78.5%	80.6%
Arrived on time	83.4%	85.9%	77.3%	79.5%
Cancelled	1.1%	0.6%	2.5%	0.8%
Average departure delay (late minutes only)	12.1 min	11.4 min	20.8 min	14.1 min
Scheduled departures a day	36	42	43	19,465
Scheduled departures	1,087	1,264	15,584	583,950

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
AA American Airlines	177	16%	78.0%	5.8 min	2.3%
UA United Airlines	159	15%	80.5%	12.4 min	0.6%
OO SkyWest Airlines	147	14%	85.7%	4.0 min	0.7%
WN Southwest Airlines	146	13%	87.0%	-0.1 min	0.0%
G4 Allegiant Air	136	13%	78.7%	4.1 min	0.0%
YX Republic Airline	117	11%	89.7%	-4.7 min	0.0%
DL Delta Air Lines	88	8%	93.2%	-6.4 min	0.0%
OH PSA Airlines	56	5%	83.9%	-10.7 min	7.1%
MQ Envoy Air	51	5%	78.4%	18.6 min	2.0%
F9 Frontier Airlines	10	1%	70.0%	10.0 min	10.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
DSM–ORD	Des Moines to Chicago	228	85.5%	4.9 min	0.9%
DSM–DEN	Des Moines to Denver	160	79.4%	13.0 min	0.6%
DSM–PHX	Des Moines to Phoenix	120	90.0%	1.2 min	0.0%
DSM–DFW	Des Moines to Dallas/Fort Worth	94	67.0%	15.3 min	5.3%
DSM–ATL	Des Moines to Atlanta	88	93.2%	-6.4 min	0.0%
DSM–CLT	Des Moines to Charlotte	60	88.3%	-4.7 min	0.0%
DSM–DCA	Des Moines to Washington	56	83.9%	-10.7 min	7.1%
DSM–STL	Des Moines to St. Louis	56	83.9%	2.3 min	0.0%
DSM–LAS	Des Moines to Las Vegas	46	76.1%	9.9 min	0.0%
DSM–LGA	Des Moines to New York	30	93.3%	-11.1 min	0.0%
DSM–IAH	Des Moines to Houston	25	88.0%	-8.3 min	0.0%
DSM–PIE	Des Moines to St. Petersburg	23	82.6%	5.9 min	0.0%

By scheduled departure hour

100

On-time share:under 62%6270768288% and over

Share of departures that left less than 15 minutes late, by scheduled hour (local time), April 2025.

Delay causes

BTS cause category	Share of delay minutes	National, Apr 2025	Minutes
Air carrier	32.0%	32.7%	4,203
Late-arriving aircraft	33.4%	39.4%	4,384
National Aviation System	27.2%	22.2%	3,578
Extreme weather	7.4%	5.5%	972
Security	0.0%	0.2%	0

13,137 delay minutes on 166 flights that arrived 15 or more minutes late and carried a cause report. Carriers assign the categories; see what each category means.

Questions and answers

How many flights left DSM on time in April 2025?

85.9% of 1,087 scheduled domestic departures left less than 15 minutes late, and 83.4% reached their destination on time. The national figures that month were 80.6% and 79.5%.

How does that compare with a year earlier?

In April 2024, 86.8% of 1,264 departures left on time and 0.6% were cancelled, against 85.9% and 1.1% in April 2025.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for April 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.