Green Bay Austin Straubel International in April 2026

77.9%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 520 domestic departures from Green Bay Austin Straubel International (GRB). 77.9% left less than 15 minutes late and 72.5% reached their destination on time; 4.6% were cancelled.

Nationally that month, 79.1% of flights departed on time and 78.9% arrived on time, so GRB departures were 1.2 points below the national departure figure.

A year earlier, in April 2025, the airport had 365 departures with 87.9% leaving on time: a change of −10.0 points, with flights up 42%.

Flights arriving at GRB that month were on time 69.0% of the time (519 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 38%, extreme weather 26% and air carrier 19%.

On time 72.5%
Arrived 15+ minutes late 22.3%
Cancelled 4.6%
Diverted 0.6%

Every scheduled departure from GRB 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	GRB, 12 months to Jul 2026	All reported flights, Apr 2026
Departed on time	77.9%	87.9%	78.7%	79.1%
Arrived on time	72.5%	84.7%	74.5%	78.9%
Cancelled	4.6%	1.4%	3.3%	0.9%
Average departure delay (late minutes only)	22.2 min	8.6 min	19.8 min	14.5 min
Scheduled departures a day	17	12	13	19,931
Scheduled departures	520	365	4,824	597,919

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
OO SkyWest Airlines	314	60%	70.1%	21.7 min	4.8%
MQ Envoy Air	120	23%	80.8%	9.9 min	3.3%
YX Republic Airline	45	9%	55.6%	15.3 min	8.9%
DL Delta Air Lines	41	8%	85.4%	-6.3 min	2.4%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
GRB–ORD	Green Bay to Chicago	313	64.5%	25.5 min	6.7%
GRB–DTW	Green Bay to Detroit	90	80.0%	11.2 min	0.0%
GRB–MSP	Green Bay to Minneapolis	86	87.2%	-1.3 min	2.3%
GRB–ATL	Green Bay to Atlanta	31	90.3%	-10.8 min	3.2%

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), April 2026.

Delay causes

BTS cause category	Share of delay minutes	National, Apr 2026	Minutes
Air carrier	18.7%	33.5%	2,248
Late-arriving aircraft	38.1%	40.4%	4,577
National Aviation System	16.8%	21.0%	2,022
Extreme weather	26.4%	5.0%	3,169
Security	0.0%	0.1%	0

12,016 delay minutes on 116 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 GRB on time in April 2026?

77.9% of 520 scheduled domestic departures left less than 15 minutes late, and 72.5% 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, 87.9% of 365 departures left on time and 1.4% were cancelled, against 77.9% and 4.6% 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 GRB · methodology · corrections.