Robert Gray AAF in September 2025

80.5%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 September 2025, reporting carriers scheduled 128 domestic departures from Robert Gray AAF (GRK). 80.5% left less than 15 minutes late and 76.6% reached their destination on time; 1.6% were cancelled.

Nationally that month, 83.1% of flights departed on time and 82.8% arrived on time, so GRK departures were 2.6 points below the national departure figure.

A year earlier, in September 2024, the airport had 149 departures with 81.2% leaving on time: a change of −0.7 points, with flights down 14%.

Flights arriving at GRK that month were on time 77.3% of the time (128 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 75%, national aviation system 19% and air carrier 5%.

On time 76.6%
Arrived 15+ minutes late 21.1%
Cancelled 1.6%
Diverted 0.8%

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

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

Measure	Sep 2025	Sep 2024	GRK, 12 months to Jul 2026	All reported flights, Sep 2025
Departed on time	80.5%	81.2%	78.7%	83.1%
Arrived on time	76.6%	77.2%	77.2%	82.8%
Cancelled	1.6%	0.0%	4.5%	0.5%
Average departure delay (late minutes only)	11.5 min	12.9 min	14.8 min	12.2 min
Scheduled departures a day	4	5	5	18,748
Scheduled departures	128	149	1,907	562,439

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
MQ Envoy Air	107	84%	73.8%	9.6 min	0.9%
OO SkyWest Airlines	21	16%	90.5%	-13.2 min	4.8%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
GRK–DFW	Killeen to Dallas/Fort Worth	128	76.6%	6.0 min	1.6%

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), September 2025.

Delay causes

BTS cause category	Share of delay minutes	National, Sep 2025	Minutes
Air carrier	4.7%	34.3%	73
Late-arriving aircraft	74.7%	37.4%	1,160
National Aviation System	19.1%	22.6%	296
Extreme weather	1.5%	5.6%	24
Security	0.0%	0.1%	0

1,553 delay minutes on 27 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 September 2025?

80.5% of 128 scheduled domestic departures left less than 15 minutes late, and 76.6% reached their destination on time. The national figures that month were 83.1% and 82.8%.

How does that compare with a year earlier?

In September 2024, 81.2% of 149 departures left on time and 0.0% were cancelled, against 80.5% and 1.6% in September 2025.

Provenance

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