Green Bay Austin Straubel International in April 2025

87.9%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 2025, reporting carriers scheduled 365 domestic departures from Green Bay Austin Straubel International (GRB). 87.9% left less than 15 minutes late and 84.7% reached their destination on time; 1.4% were cancelled.

Nationally that month, 80.6% of flights departed on time and 79.5% arrived on time, so GRB departures were 7.3 points above the national departure figure.

A year earlier, in April 2024, the airport had 397 departures with 85.6% leaving on time: a change of +2.3 points, with flights down 8%.

Flights arriving at GRB that month were on time 84.2% of the time (366 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 56%, national aviation system 21% and late-arriving aircraft 14%.

On time 84.7%
Arrived 15+ minutes late 14.0%
Cancelled 1.4%
Diverted 0.0%

Every scheduled departure from GRB in April 2025, judged by arrival at the destination.

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

Measure	Apr 2025	Apr 2024	GRB, 12 months to Jul 2026	All reported flights, Apr 2025
Departed on time	87.9%	85.6%	78.7%	80.6%
Arrived on time	84.7%	82.1%	74.5%	79.5%
Cancelled	1.4%	2.0%	3.3%	0.8%
Average departure delay (late minutes only)	8.6 min	17.0 min	19.8 min	14.1 min
Scheduled departures a day	12	13	13	19,465
Scheduled departures	365	397	4,824	583,950

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
OO SkyWest Airlines	238	65%	86.6%	-0.5 min	2.1%
MQ Envoy Air	84	23%	78.6%	8.9 min	0.0%
DL Delta Air Lines	39	11%	84.6%	-3.6 min	0.0%
YX Republic Airline	4	1%	100.0%	-25.7 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
GRB–ORD	Green Bay to Chicago	176	80.1%	7.4 min	1.1%
GRB–MSP	Green Bay to Minneapolis	85	90.6%	-6.2 min	1.2%
GRB–DTW	Green Bay to Detroit	63	88.9%	-2.8 min	3.2%
GRB–ATL	Green Bay to Atlanta	34	88.2%	-4.4 min	0.0%
GRB–LGA	Green Bay to New York	3	100.0%	-35.3 min	0.0%
GRB–SLC	Green Bay to Salt Lake City	2	100.0%	-19.5 min	0.0%
GRB–LAX	Green Bay to Los Angeles	1	0.0%	26.0 min	0.0%
GRB–MCO	Green Bay to Orlando	1	0.0%	52.0 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), April 2025.

Delay causes

BTS cause category	Share of delay minutes	National, Apr 2025	Minutes
Air carrier	55.9%	32.7%	1,879
Late-arriving aircraft	13.6%	39.4%	457
National Aviation System	20.6%	22.2%	693
Extreme weather	10.0%	5.5%	335
Security	0.0%	0.2%	0

3,364 delay minutes on 51 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 2025?

87.9% of 365 scheduled domestic departures left less than 15 minutes late, and 84.7% reached their destination on time. The national figures that month were 80.6% and 79.5%.

How does that compare with a year earlier?

In April 2024, 85.6% of 397 departures left on time and 2.0% were cancelled, against 87.9% and 1.4% in April 2025.

Provenance

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