Green Bay Austin Straubel International in December 2025

65.3%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 December 2025, reporting carriers scheduled 412 domestic departures from Green Bay Austin Straubel International (GRB). 65.3% left less than 15 minutes late and 61.9% reached their destination on time; 3.6% were cancelled.

Nationally that month, 72.0% of flights departed on time and 71.9% arrived on time, so GRB departures were 6.7 points below the national departure figure.

A year earlier, in December 2024, the airport had 269 departures with 74.0% leaving on time: a change of −8.7 points, with flights up 53%.

Flights arriving at GRB that month were on time 52.1% of the time (413 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 36%, air carrier 35% and national aviation system 16%.

On time 61.9%
Arrived 15+ minutes late 34.5%
Cancelled 3.6%
Diverted 0.0%

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

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

Measure	Dec 2025	Dec 2024	GRB, 12 months to Jul 2026	All reported flights, Dec 2025
Departed on time	65.3%	74.0%	78.7%	72.0%
Arrived on time	61.9%	72.5%	74.5%	71.9%
Cancelled	3.6%	2.6%	3.3%	1.5%
Average departure delay (late minutes only)	39.6 min	32.8 min	19.8 min	21.2 min
Scheduled departures a day	14	9	13	19,410
Scheduled departures	412	269	4,824	582,304

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
OO SkyWest Airlines	237	58%	60.3%	46.9 min	3.8%
MQ Envoy Air	124	30%	61.3%	22.6 min	4.0%
DL Delta Air Lines	49	12%	71.4%	9.1 min	2.0%
YX Republic Airline	2	0%	50.0%	116.5 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
GRB–ORD	Green Bay to Chicago	247	57.9%	38.6 min	4.0%
GRB–DTW	Green Bay to Detroit	90	68.9%	37.9 min	4.4%
GRB–MSP	Green Bay to Minneapolis	45	64.4%	32.0 min	2.2%
GRB–ATL	Green Bay to Atlanta	30	70.0%	8.1 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), December 2025.

Delay causes

BTS cause category	Share of delay minutes	National, Dec 2025	Minutes
Air carrier	35.0%	33.3%	5,912
Late-arriving aircraft	36.4%	41.1%	6,153
National Aviation System	15.5%	19.1%	2,617
Extreme weather	13.2%	6.4%	2,231
Security	0.0%	0.2%	0

16,913 delay minutes on 142 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 December 2025?

65.3% of 412 scheduled domestic departures left less than 15 minutes late, and 61.9% reached their destination on time. The national figures that month were 72.0% and 71.9%.

How does that compare with a year earlier?

In December 2024, 74.0% of 269 departures left on time and 2.6% were cancelled, against 65.3% and 3.6% in December 2025.

Provenance

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