Green Bay Austin Straubel International in August 2025

80.4%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 341 domestic departures from Green Bay Austin Straubel International (GRB). 80.4% left less than 15 minutes late and 74.5% reached their destination on time; 2.1% were cancelled.

Nationally that month, 76.8% of flights departed on time and 76.3% arrived on time, so GRB departures were 3.6 points above the national departure figure.

A year earlier, in August 2024, the airport had 381 departures with 80.8% leaving on time: a change of −0.4 points, with flights down 10%.

Flights arriving at GRB that month were on time 71.7% of the time (343 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 40%, late-arriving aircraft 34% and national aviation system 15%.

On time 74.5%
Arrived 15+ minutes late 23.2%
Cancelled 2.1%
Diverted 0.3%

Every scheduled departure from GRB 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	GRB, 12 months to Jul 2026	All reported flights, Aug 2025
Departed on time	80.4%	80.8%	78.7%	76.8%
Arrived on time	74.5%	75.9%	74.5%	76.3%
Cancelled	2.1%	0.3%	3.3%	1.1%
Average departure delay (late minutes only)	19.1 min	12.8 min	19.8 min	17.6 min
Scheduled departures a day	11	13	13	20,079
Scheduled departures	341	381	4,824	602,378

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
OO SkyWest Airlines	190	56%	73.2%	18.0 min	1.6%
MQ Envoy Air	113	33%	70.8%	14.1 min	3.5%
DL Delta Air Lines	31	9%	96.8%	-11.9 min	0.0%
F9 Frontier Airlines	6	2%	66.7%	9.3 min	0.0%
YX Republic Airline	1	0%	100.0%	-21.0 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
GRB–ORD	Green Bay to Chicago	239	72.0%	15.3 min	2.9%
GRB–MSP	Green Bay to Minneapolis	51	72.5%	23.3 min	0.0%
GRB–ATL	Green Bay to Atlanta	31	96.8%	-11.9 min	0.0%
GRB–DTW	Green Bay to Detroit	14	78.6%	10.4 min	0.0%
GRB–DEN	Green Bay to Denver	6	66.7%	9.3 min	0.0%

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), August 2025.

Delay causes

BTS cause category	Share of delay minutes	National, Aug 2025	Minutes
Air carrier	39.6%	33.1%	2,639
Late-arriving aircraft	34.2%	40.5%	2,276
National Aviation System	14.5%	19.2%	966
Extreme weather	11.7%	7.0%	778
Security	0.0%	0.1%	0

6,659 delay minutes on 79 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 August 2025?

80.4% of 341 scheduled domestic departures left less than 15 minutes late, and 74.5% 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, 80.8% of 381 departures left on time and 0.3% were cancelled, against 80.4% and 2.1% 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 GRB · methodology · corrections.