Robert Gray AAF in December 2024

83.3%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 December 2024, reporting carriers scheduled 156 domestic departures from Robert Gray AAF (GRK). 83.3% left less than 15 minutes late and 80.1% reached their destination on time; 2.6% were cancelled.

Nationally that month, 77.8% of flights departed on time and 78.1% arrived on time, so GRK departures were 5.5 points above the national departure figure.

A year earlier, in December 2023, the airport had 134 departures with 88.1% leaving on time: a change of −4.8 points, with flights up 16%.

Flights arriving at GRK that month were on time 73.1% of the time (156 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 36%, air carrier 24% and national aviation system 24%.

On time 80.1%
Arrived 15+ minutes late 17.3%
Cancelled 2.6%
Diverted 0.0%

Every scheduled departure from GRK in December 2024, judged by arrival at the destination.

December 2024 against a year earlier, the airport's year and the nation

Measure	Dec 2024	Dec 2023	GRK, 12 months to Jul 2026	All reported flights, Dec 2024
Departed on time	83.3%	88.1%	78.7%	77.8%
Arrived on time	80.1%	88.1%	77.2%	78.1%
Cancelled	2.6%	0.0%	4.5%	0.7%
Average departure delay (late minutes only)	8.9 min	4.7 min	14.8 min	16.6 min
Scheduled departures a day	5	5	5	19,686
Scheduled departures	156	134	1,907	590,581

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
MQ Envoy Air	130	83%	80.8%	1.0 min	2.3%
OO SkyWest Airlines	26	17%	76.9%	10.6 min	3.8%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
GRK–DFW	Killeen to Dallas/Fort Worth	156	80.1%	2.6 min	2.6%

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), December 2024.

Delay causes

BTS cause category	Share of delay minutes	National, Dec 2024	Minutes
Air carrier	24.0%	34.3%	360
Late-arriving aircraft	35.5%	40.2%	533
National Aviation System	23.7%	17.8%	356
Extreme weather	16.7%	7.5%	251
Security	0.0%	0.2%	0

1,500 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 December 2024?

83.3% of 156 scheduled domestic departures left less than 15 minutes late, and 80.1% reached their destination on time. The national figures that month were 77.8% and 78.1%.

How does that compare with a year earlier?

In December 2023, 88.1% of 134 departures left on time and 0.0% were cancelled, against 83.3% and 2.6% in December 2024.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for December 2024; 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.