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Route · GRB → ORD · 2020–2025 BTS data

Green Bay to Chicago

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), GRB to ORD (Green Bay to Chicago) ranks #1208 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

81.7%
On-time
+2.7 pts
vs US avg
88 min
Delay when late
9,675
Flights
#1208 of 4927
Corpus placement

Cancelled

2.3%

Best Month

Feb 2024 90%

Worst Month

Dec 2025 62%

Distance

173 mi

Carriers

18

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Dec 2025 247 94 10 0 YX,MQ,OO
Nov 2025 271 57 26 0 OO,MQ,YX
Oct 2025 213 47 2 0 OO,YX,MQ
Sep 2025 195 38 2 0 MQ,OO
Aug 2025 239 59 7 1 OO,YX,MQ
Jul 2025 265 87 4 0 OO,YX,MQ
Jun 2025 275 77 0 0 OO,YX,MQ
May 2025 208 43 2 0 OO,YX,MQ
Apr 2025 176 33 2 0 MQ,OO,YX
Mar 2025 117 38 1 0 YX,OO
Feb 2025 91 27 1 0 OO,YX
Jan 2025 111 35 2 0 OO,YX
Dec 2024 80 21 2 0 OO
Nov 2024 95 17 3 0 OO,MQ
Oct 2024 163 24 0 0 MQ,OO
Sep 2024 211 36 0 0 YX,OO,MQ
Aug 2024 175 42 1 0 MQ,YX,OO
Jul 2024 70 16 3 0 MQ,OO,YX
Jun 2024 161 49 4 0 MQ,OO,YX
May 2024 133 35 5 0 MQ,OO,YX
Apr 2024 178 30 3 1 MQ,OO,YX
Mar 2024 159 21 0 0 MQ,YX,OO
Feb 2024 154 16 2 0 MQ,OO,YX
Jan 2024 130 41 12 0 MQ,YX,OO

GRB–ORD seasonal on-time pattern

Best: April (88.2%) · weakest: December (73.7%)

70%75%80%85%90% JanFebMarAprMayJunJulAugSepOctNovDec 73.7%

Strongest calendar month

April

88.2% on-time · ~130 flights/mo

Busiest calendar month

June

~169 flights/mo avg

Weakest calendar month

December

73.7% on-time · ~134 flights/mo

Cancellation Rate

2.3%

94 of 4,117 flights

Diversion Rate

0.0%

2 of 4,117 flights

Explore origin & destination

On-time and delay data for the airports this route connects.

GRB - Green Bay

Full on-time, delay-cause, and seasonal performance for Green Bay, WI.

GRB on-time profile

ORD - Chicago

Full on-time, delay-cause, and seasonal performance for Chicago, IL.

ORD on-time profile

Compare the two airports

See GRB and ORD side by side on delays, cancellations, and reliability.

Compare GRB vs ORD

Origin-hub reliability standing

Mid-pack among GRB departures

From GRB, this corridor sits with 1 other 75–85% on-time routes out of 4 tracked departures, not the hub's reliability leaders (3 at ≥85%) and not the softest ( 0 below 75%). Destination: Chicago · fleet on-time rank #2468 of 4927.

What the Data Says About GRB to ORD

9,675 tracked flights put the GRB to ORD pairing (Green Bay to Chicago) at a 81.7% on-time rate, squarely in line with the wider network. Delays that do occur run 88.3 minutes on average. Across the 173-mile route and its 18 carriers, the trailing 24 months show 2.3% cancelled and 0.0% diverted (4,117 flights sampled).

The monthly split is wide on this route: Feb 2024 posted the strongest performance at 90% on-time, while Dec 2025 came in at just 62% - a 28-point swing worth factoring into travel timing.

On the multi-year calendar, GRB–ORD peaks in April at 88.2% on-time while June carries the heaviest traffic (~169 flights per month) ; the softest month is December at 73.7%, a 14.5-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does GRB to ORD rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, GRB to ORD ranks #1208 of 4927 tracked domestic routes by total flights (most flights = #1). That ordinal matches our busiest-routes listing (total_flights DESC). See /methodology#corpus-placement for the exact sort basis.
How often are flights delayed from GRB to ORD? ▼
Flights from Green Bay to Chicago have a 81.7% on-time rate based on 9,675 flights. The average delay is 88.3 minutes. The best recent month was Feb 2024 with 90% on-time.
What is the cancellation rate for GRB to ORD? ▼
Over the last 24 months, 2.3% of flights on this route were cancelled (94 of 4,117 flights) and 0.0% were diverted.
How far is the flight from GRB to ORD? ▼
The flight distance from Green Bay (GRB) to Chicago (ORD) is approximately 173 miles. This route is served by 18 carriers.
When is the best time to fly from GRB to ORD? ▼
The best recent month for on-time performance was Feb 2024 (90% on-time). The worst was Dec 2025 (62% on-time). Consider booking during months with historically better performance.

Airports on this route

GRB Airport

Green Bay
ORD Airport

Chicago
Data source

Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data. Statistics reflect cumulative performance across all available reporting periods.

Read our methodology - how this data is sourced, computed, and verified.

Using GRB–ORD data

GRB–ORD is mid-pack at 81.7% on-time; month and carrier mix move more than the corridor headline.

  • Compare GRB and ORD airport profiles: delay causes and top routes differ even on the same corridor. GRB airport
  • If your dates flex, April (88.2% on-time) beats December (73.7%) on this corridor. Seasonal chart
  • 4 other routes post a similar 81.7% on-time rate; compare before you commit to this pairing. Similar routes

On-time rate reflects the BTS historical average across all reporting carriers on this origin–destination pair, not any single flight or booking recommendation.

Data sourced from U.S. Department of Transportation Bureau of Transportation Statistics (BTS) On-Time Performance data. See our methodology for details. Retrieved and formatted by PlainFlights

Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. This page aggregates this specific route's on-time performance and monthly trend, live from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.