Des Moines International in July 2026

73.7%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 July 2026, reporting carriers scheduled 1,415 domestic departures from Des Moines International (DSM). 73.7% left less than 15 minutes late and 72.9% reached their destination on time; 2.6% were cancelled.

Nationally that month, 68.8% of flights departed on time and 69.4% arrived on time, so DSM departures were 4.9 points above the national departure figure.

A year earlier, in July 2025, the airport had 1,367 departures with 75.3% leaving on time: a change of −1.6 points, with flights up 4%.

Flights arriving at DSM that month were on time 65.9% of the time (1,416 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 35%, late-arriving aircraft 34% and national aviation system 25%.

On time 72.9%
Arrived 15+ minutes late 24.0%
Cancelled 2.6%
Diverted 0.6%

Every scheduled departure from DSM in July 2026, judged by arrival at the destination.

July 2026 against a year earlier, the airport's year and the nation

Measure	Jul 2026	Jul 2025	DSM, 12 months to Jul 2026	All reported flights, Jul 2026
Departed on time	73.7%	75.3%	78.5%	68.8%
Arrived on time	72.9%	72.1%	77.3%	69.4%
Cancelled	2.6%	3.5%	2.5%	2.6%
Average departure delay (late minutes only)	27.4 min	24.9 min	20.8 min	24.1 min
Scheduled departures a day	47	46	43	21,066
Scheduled departures	1,415	1,367	15,584	631,970

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
G4 Allegiant Air	221	16%	68.8%	27.3 min	0.5%
OO SkyWest Airlines	213	15%	72.3%	9.8 min	2.8%
AA American Airlines	210	15%	68.1%	29.1 min	1.9%
UA United Airlines	209	15%	75.1%	14.4 min	2.9%
WN Southwest Airlines	155	11%	78.1%	6.4 min	0.6%
DL Delta Air Lines	117	8%	76.1%	15.3 min	2.6%
YX Republic Airline	96	7%	79.2%	18.4 min	3.1%
OH PSA Airlines	92	7%	63.0%	33.3 min	9.8%
MQ Envoy Air	88	6%	78.4%	5.2 min	4.5%
F9 Frontier Airlines	14	1%	85.7%	8.9 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
DSM–ORD	Des Moines to Chicago	302	69.2%	18.4 min	6.0%
DSM–DEN	Des Moines to Denver	225	79.1%	10.9 min	0.0%
DSM–DFW	Des Moines to Dallas/Fort Worth	120	70.0%	22.7 min	0.8%
DSM–ATL	Des Moines to Atlanta	117	76.1%	15.3 min	2.6%
DSM–PHL	Des Moines to Philadelphia	71	62.0%	37.6 min	9.9%
DSM–MDW	Des Moines to Chicago	62	74.2%	2.7 min	1.6%
DSM–CLT	Des Moines to Charlotte	61	67.2%	38.2 min	3.3%
DSM–DCA	Des Moines to Washington	61	72.1%	14.4 min	4.9%
DSM–PHX	Des Moines to Phoenix	61	77.0%	16.6 min	1.6%
DSM–LAS	Des Moines to Las Vegas	54	87.0%	16.6 min	0.0%
DSM–LAX	Des Moines to Los Angeles	31	64.5%	11.0 min	0.0%
DSM–IAH	Des Moines to Houston	30	90.0%	0.1 min	0.0%

By scheduled departure hour

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

Share of departures that left less than 15 minutes late, by scheduled hour (local time), July 2026.

Delay causes

BTS cause category	Share of delay minutes	National, Jul 2026	Minutes
Air carrier	35.4%	31.7%	13,147
Late-arriving aircraft	34.4%	41.8%	12,757
National Aviation System	24.6%	19.9%	9,119
Extreme weather	5.5%	6.5%	2,037
Security	0.1%	0.1%	30

37,090 delay minutes on 339 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 July 2026?

73.7% of 1,415 scheduled domestic departures left less than 15 minutes late, and 72.9% reached their destination on time. The national figures that month were 68.8% and 69.4%.

How does that compare with a year earlier?

In July 2025, 75.3% of 1,367 departures left on time and 3.5% were cancelled, against 73.7% and 2.6% in July 2026.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for July 2026; 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.