Green Bay Austin Straubel International in May 2026

82.2%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 2026, reporting carriers scheduled 433 domestic departures from Green Bay Austin Straubel International (GRB). 82.2% left less than 15 minutes late and 79.2% reached their destination on time; 0.7% were cancelled.

Nationally that month, 77.1% of flights departed on time and 77.6% arrived on time, so GRB departures were 5.1 points above the national departure figure.

A year earlier, in May 2025, the airport had 419 departures with 88.1% leaving on time: a change of −5.9 points, with flights up 3%.

Flights arriving at GRB that month were on time 73.0% of the time (433 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 46%, late-arriving aircraft 30% and national aviation system 12%.

On time 79.2%
Arrived 15+ minutes late 20.1%
Cancelled 0.7%
Diverted 0.0%

Every scheduled departure from GRB in May 2026, judged by arrival at the destination.

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

Measure	May 2026	May 2025	GRB, 12 months to Jul 2026	All reported flights, May 2026
Departed on time	82.2%	88.1%	78.7%	77.1%
Arrived on time	79.2%	82.6%	74.5%	77.6%
Cancelled	0.7%	1.0%	3.3%	0.9%
Average departure delay (late minutes only)	18.2 min	12.4 min	19.8 min	16.0 min
Scheduled departures a day	14	14	13	20,391
Scheduled departures	433	419	4,824	611,735

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
OO SkyWest Airlines	291	67%	77.3%	11.8 min	1.0%
MQ Envoy Air	111	26%	82.9%	-0.3 min	0.0%
DL Delta Air Lines	31	7%	83.9%	5.5 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
GRB–ORD	Green Bay to Chicago	217	74.2%	12.1 min	0.9%
GRB–DTW	Green Bay to Detroit	93	81.7%	6.9 min	1.1%
GRB–MSP	Green Bay to Minneapolis	92	87.0%	1.3 min	0.0%
GRB–ATL	Green Bay to Atlanta	31	83.9%	5.5 min	0.0%

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), May 2026.

Delay causes

BTS cause category	Share of delay minutes	National, May 2026	Minutes
Air carrier	46.4%	33.0%	3,775
Late-arriving aircraft	29.6%	40.4%	2,404
National Aviation System	11.9%	20.5%	970
Extreme weather	11.6%	6.0%	943
Security	0.5%	0.1%	38

8,130 delay minutes on 87 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 2026?

82.2% of 433 scheduled domestic departures left less than 15 minutes late, and 79.2% reached their destination on time. The national figures that month were 77.1% and 77.6%.

How does that compare with a year earlier?

In May 2025, 88.1% of 419 departures left on time and 1.0% were cancelled, against 82.2% and 0.7% in May 2026.

Provenance

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