Robert Gray AAF in April 2026

81.1%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 2026, reporting carriers scheduled 164 domestic departures from Robert Gray AAF (GRK). 81.1% left less than 15 minutes late and 79.9% reached their destination on time; 3.0% were cancelled.

Nationally that month, 79.1% of flights departed on time and 78.9% arrived on time, so GRK departures were 2.0 points above the national departure figure.

A year earlier, in April 2025, the airport had 150 departures with 74.0% leaving on time: a change of +7.1 points, with flights up 9%.

Flights arriving at GRK that month were on time 79.4% of the time (165 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 35%, extreme weather 32% and late-arriving aircraft 21%.

On time 79.9%
Arrived 15+ minutes late 16.5%
Cancelled 3.0%
Diverted 0.6%

Every scheduled departure from GRK in April 2026, judged by arrival at the destination.

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

Measure	Apr 2026	Apr 2025	GRK, 12 months to Jul 2026	All reported flights, Apr 2026
Departed on time	81.1%	74.0%	78.7%	79.1%
Arrived on time	79.9%	72.7%	77.2%	78.9%
Cancelled	3.0%	6.0%	4.5%	0.9%
Average departure delay (late minutes only)	13.3 min	12.4 min	14.8 min	14.5 min
Scheduled departures a day	6	5	5	19,931
Scheduled departures	164	150	1,907	597,919

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
OO SkyWest Airlines	90	55%	76.7%	9.5 min	3.3%
MQ Envoy Air	74	45%	83.8%	1.8 min	2.7%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
GRK–DFW	Killeen to Dallas/Fort Worth	164	79.9%	6.0 min	3.0%

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 2026.

Delay causes

BTS cause category	Share of delay minutes	National, Apr 2026	Minutes
Air carrier	35.1%	33.5%	749
Late-arriving aircraft	21.1%	40.4%	450
National Aviation System	12.2%	21.0%	261
Extreme weather	31.6%	5.0%	676
Security	0.0%	0.1%	0

2,136 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 April 2026?

81.1% of 164 scheduled domestic departures left less than 15 minutes late, and 79.9% reached their destination on time. The national figures that month were 79.1% and 78.9%.

How does that compare with a year earlier?

In April 2025, 74.0% of 150 departures left on time and 6.0% were cancelled, against 81.1% and 3.0% in April 2026.

Provenance

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