Airport reliability

Green Bay (GRB) on-time performance

How reliably flights leave Green Bay, WI (GRB) and reach their destinations, by airline, departure hour and month, September 2025 to August 2026.

Historical performance Official DOT data through August 2026 · Not live flight status

Green Bay, WI4,934 departures in 12 months

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Departures on time: 74.8%
Cancelled: 3.2%
60+ minutes late: 10.4%
Scheduled departures: 4,934

What this means

GRB departures ran below the U.S. average.

74.8% of the 4,934 scheduled departures from Green Bay (GRB) arrived at their destination on time, 0.8 points lower than the U.S. average of 75.6%.
3.2% of departures were cancelled (U.S. average 1.9%), and 10.4% arrived an hour or more late.
Flights arriving at GRB were on time 70.8% of the time.
Among airlines with at least 300 departures, Delta Air Lines was the most punctual from GRB (83.8%) and SkyWest Airlines the least (73.5%).
Over the last 3 years, October was the most reliable month for departures from GRB (86.6% on time) and January the least reliable (70.2%).
Cancellations peaked in March, when 4.6% of flights were cancelled.
Flights scheduled to depart 6 am to 7 am were the most punctual (86.0% on time); flights scheduled to depart 5 pm to 6 pm were the least (59.0%).

Airlines at GRB

Ranked by on-time arrival

Departures from GRB, September 2025 to August 2026. On time means arrived at the destination within 15 minutes of schedule.
Airline	On time	Cancelled	60+ min late	Avg delay when late	Departures
Delta Air Lines	83.8%	1.8%	5.6%	92 min	556
Envoy AirSold as American Eagle	74.4%	3.7%	9.2%	74 min	1,395
SkyWest AirlinesSold as United Express, Delta Connection, American Eagle, Alaska	73.5%	3.1%	12.0%	102 min	2,819
Republic AirwaysSold as American Eagle, Delta Connection, United Express	70.1%	6.1%	8.5%	59 min	164

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On-time rate by departure hour

<6a 83.5%

6a 86.0%

7a 81.3%

8a 71.2%

9a 84.2%

10a 66.3%

11a 77.0%

12p 78.4%

1p 66.9%

2p 62.5%

3p 62.5%

4p 73.6%

5p 59.0%

6p 62.5%

7p Insufficient sample

8p 52.0%

9p Insufficient sample

Share of scheduled flights on time GRB average 74.8%

Departures from GRB by scheduled local departure hour, September 2025 to August 2026. Scale starts at zero.

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Period	On time	Flights
Departing before 6 am	83.5%	539
Departing 6 am to 7 am	86.0%	850
Departing 7 am to 8 am	81.3%	331
Departing 8 am to 9 am	71.2%	139
Departing 9 am to 10 am	84.2%	222
Departing 10 am to 11 am	66.3%	267
Departing 11 am to noon	77.0%	447
Departing noon to 1 pm	78.4%	436
Departing 1 pm to 2 pm	66.9%	148
Departing 2 pm to 3 pm	62.5%	88
Departing 3 pm to 4 pm	62.5%	253
Departing 4 pm to 5 pm	73.6%	432
Departing 5 pm to 6 pm	59.0%	466
Departing 6 pm to 7 pm	62.5%	216
Departing 7 pm to 8 pm	Insufficient sample	49
Departing 8 pm to 9 pm	52.0%	50
Departing 9 pm to 10 pm	Insufficient sample	1

Best and worst months at GRB

Jan 70.2%

Feb 80.5%

Mar 73.1%

Apr 78.9%

May 80.0%

Jun 76.8%

Jul 78.0%

Aug 76.3%

Sep 84.3%

Oct 86.6%

Nov 81.8%

Dec 73.3%

Share of scheduled flights on time 12-month average 74.8%

Departures from GRB by calendar month, September 2023 to August 2026 pooled. Scale starts at zero.

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Period	On time	Flights
January	70.2%	959
February	80.5%	924
March	73.1%	1,186
April	78.9%	1,282
May	80.0%	1,205
June	76.8%	1,210
July	78.0%	1,004
August	76.3%	1,173
September	84.3%	1,037
October	86.6%	1,121
November	81.8%	1,082
December	73.3%	989

Month by month, last 12 months

Sep 79.7%

Oct 82.5%

Nov 74.6%

Dec 61.9%

Jan 67.9%

Feb 77.5%

Mar 59.2%

Apr 72.5%

May 79.2%

Jun 82.5%

Jul 87.5%

Aug 78.0%

Share of scheduled flights on time U.S. average 75.6%

Departures from GRB, September 2025 to August 2026. Scale starts at zero.

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Period	On time	Flights
Sep 2025	79.7%	291
Oct 2025	82.5%	412
Nov 2025	74.6%	460
Dec 2025	61.9%	412
Jan 2026	67.9%	343
Feb 2026	77.5%	347
Mar 2026	59.2%	490
Apr 2026	72.5%	520
May 2026	79.2%	433
Jun 2026	82.5%	399
Jul 2026	87.5%	376
Aug 2026	78.0%	451

Busiest routes from GRB

Nonstop routes from GRB by scheduled flights, September 2025 to August 2026.
To	On time	Cancelled	Airlines	Flights
Chicago (ORD)	68.7%	4.4%	3	2,723
Detroit (DTW)	80.7%	1.8%	2	924
Minneapolis (MSP)	82.5%	1.3%	2	909
Atlanta (ATL)	86.1%	1.9%	1	366

Airliner parked at a terminal gate — Photo: Depositphotos (licensed stock, illustrative only). Credits

Sources & data dates

Source: U.S. DOT Bureau of Transportation Statistics, Reporting Carrier On-Time Performance (1987-present)
Period: September 2025 to August 2026 (12 months); month-of-year patterns September 2023 to August 2026
Data through: August 2026
Processed: 2026-11-03
Scope: Scheduled nonstop domestic departures from Green Bay, WI (GRB) by airlines that report to the DOT.
Method: Rates use all scheduled flights as the denominator; cancelled and diverted flights count as not on time. Figures based on fewer than 50 scheduled flights are suppressed. Full methodology.

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