Robert Gray AAF in August 2025

75.0%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 August 2025, reporting carriers scheduled 136 domestic departures from Robert Gray AAF (GRK). 75.0% left less than 15 minutes late and 71.3% reached their destination on time; 2.2% were cancelled.

Nationally that month, 76.8% of flights departed on time and 76.3% arrived on time, so GRK departures were 1.8 points below the national departure figure.

A year earlier, in August 2024, the airport had 150 departures with 81.3% leaving on time: a change of −6.3 points, with flights down 9%.

Flights arriving at GRK that month were on time 69.1% of the time (136 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 65%, extreme weather 19% and national aviation system 9%.

On time 71.3%
Arrived 15+ minutes late 26.5%
Cancelled 2.2%
Diverted 0.0%

Every scheduled departure from GRK in August 2025, judged by arrival at the destination.

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

Measure	Aug 2025	Aug 2024	GRK, 12 months to Jul 2026	All reported flights, Aug 2025
Departed on time	75.0%	81.3%	78.7%	76.8%
Arrived on time	71.3%	84.7%	77.2%	76.3%
Cancelled	2.2%	0.0%	4.5%	1.1%
Average departure delay (late minutes only)	20.5 min	17.0 min	14.8 min	17.6 min
Scheduled departures a day	5	5	5	20,079
Scheduled departures	136	150	1,907	602,378

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
MQ Envoy Air	132	97%	72.0%	16.1 min	2.3%
OO SkyWest Airlines	4	3%	50.0%	32.8 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
GRK–DFW	Killeen to Dallas/Fort Worth	136	71.3%	16.6 min	2.2%

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), August 2025.

Delay causes

BTS cause category	Share of delay minutes	National, Aug 2025	Minutes
Air carrier	7.9%	33.1%	210
Late-arriving aircraft	64.8%	40.5%	1,724
National Aviation System	8.8%	19.2%	234
Extreme weather	18.5%	7.0%	493
Security	0.0%	0.1%	0

2,661 delay minutes on 36 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 GRK on time in August 2025?

75.0% of 136 scheduled domestic departures left less than 15 minutes late, and 71.3% reached their destination on time. The national figures that month were 76.8% and 76.3%.

How does that compare with a year earlier?

In August 2024, 81.3% of 150 departures left on time and 0.0% were cancelled, against 75.0% and 2.2% in August 2025.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for August 2025; public domain. Domestic scheduled flights by reporting carriers, totals and averages only. The site's data runs through July 2026. Full record for GRK · methodology · corrections.