Green Bay Austin Straubel International in May 2025

88.1%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 May 2025, reporting carriers scheduled 419 domestic departures from Green Bay Austin Straubel International (GRB). 88.1% left less than 15 minutes late and 82.6% reached their destination on time; 1.0% were cancelled.

Nationally that month, 76.7% of flights departed on time and 75.4% arrived on time, so GRB departures were 11.4 points above the national departure figure.

A year earlier, in May 2024, the airport had 353 departures with 78.5% leaving on time: a change of +9.6 points, with flights up 19%.

Flights arriving at GRB that month were on time 83.8% of the time (420 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 65%, late-arriving aircraft 16% and national aviation system 15%.

On time 82.6%
Arrived 15+ minutes late 16.5%
Cancelled 1.0%
Diverted 0.0%

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

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

Measure	May 2025	May 2024	GRB, 12 months to Jul 2026	All reported flights, May 2025
Departed on time	88.1%	78.5%	78.7%	76.7%
Arrived on time	82.6%	77.9%	74.5%	75.4%
Cancelled	1.0%	1.4%	3.3%	1.0%
Average departure delay (late minutes only)	12.4 min	24.0 min	19.8 min	17.5 min
Scheduled departures a day	14	12	13	20,188
Scheduled departures	419	353	4,824	605,648

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
OO SkyWest Airlines	277	66%	84.5%	6.9 min	0.4%
MQ Envoy Air	91	22%	74.7%	10.5 min	2.2%
DL Delta Air Lines	31	7%	87.1%	-3.7 min	3.2%
YX Republic Airline	14	3%	85.7%	-3.0 min	0.0%
F9 Frontier Airlines	6	1%	83.3%	22.3 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
GRB–ORD	Green Bay to Chicago	208	78.4%	12.2 min	1.0%
GRB–MSP	Green Bay to Minneapolis	92	84.8%	2.3 min	1.1%
GRB–DTW	Green Bay to Detroit	82	89.0%	0.9 min	0.0%
GRB–ATL	Green Bay to Atlanta	31	87.1%	-3.7 min	3.2%
GRB–DEN	Green Bay to Denver	6	83.3%	22.3 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), May 2025.

Delay causes

BTS cause category	Share of delay minutes	National, May 2025	Minutes
Air carrier	64.8%	29.3%	3,742
Late-arriving aircraft	16.2%	37.8%	936
National Aviation System	14.5%	25.9%	838
Extreme weather	4.5%	6.9%	258
Security	0.0%	0.1%	0

5,774 delay minutes on 69 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 May 2025?

88.1% of 419 scheduled domestic departures left less than 15 minutes late, and 82.6% reached their destination on time. The national figures that month were 76.7% and 75.4%.

How does that compare with a year earlier?

In May 2024, 78.5% of 353 departures left on time and 1.4% were cancelled, against 88.1% and 1.0% in May 2025.

Provenance

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