GRB to DTW flight delays
Green Bay, WI (GRB) Detroit, MI (DTW) · 287 miles
812 flights · January 2025 – August 2026 · US Bureau of Transportation Statistics
80.2%
Arrived on time
Within 15 minutes of schedule
2.09%
Cancelled
Share of scheduled flights
104 min
When late, late by
Average across delayed arrivals
21 min
Delay per flight
Averaged over every flight flown
What the record says about this route
The season swings this route hard. In June it ran 29.6 points more punctual than in March — a difference bigger than the one between the best and worst airlines on most routes. If the date is flexible, it is worth more than the carrier.
The shape of the lateness matters here. Flights on this route are not late often, but when they are late they are late by about 104 minutes — long enough to lose a connection or an evening. The on-time percentage looks reassuring and understates the consequence of being on the wrong flight.
The two directions do not behave alike. DTW to GRB arrives on time 7.9 points less often than the outbound. Delay accumulates through the flying day, so whichever direction is scheduled later tends to carry the worse record — which is an argument for booking the morning departure if the choice exists.
The 2 airlines here are separated by under 2 points — close enough to call a tie. Choose on price and departure time.
Which airline should you fly on this route?
Over January 2025 – August 2026, Delta Air Lines arrived on time most often on GRB to DTW. SkyWest Airlines was late most often. Flights ran closest to schedule in June and worst in July.
Every airline on GRB to DTW
Ranked by how many flights each one operated. A carrier with fewer than 100 flights in the period is listed but not graded.
| Airline | Flights | On time | Cancelled | Avg delay | Grade |
|---|---|---|---|---|---|
| SkyWest Airlines | 625 | 79.87% | 2.24% | 112 min | C |
| Delta Air Lines | 187 | 81.32% | 1.6% | 77 min | C |
Month by month
Share of flights that arrived within 15 minutes of schedule, by month flown.
The return leg
DTW to GRB Detroit back to Green Bay 72.31% on time DOther routes from Green Bay
Common questions
Are flights from Green Bay to Detroit usually delayed?
80.2% of flights on the GRB to DTW route arrived within 15 minutes of schedule, so roughly 2 in every ten arrived late. That is better than the average route in this record.
Which airline is most on time from Green Bay to Detroit?
Delta Air Lines, at 81.32% on time across 187 flights. The least punctual on the route was SkyWest Airlines at 79.87%.
How often are GRB to DTW flights cancelled?
2.09% of scheduled flights did not operate — about 21 in every thousand. That is in the normal range.
What is the best month to fly Green Bay to Detroit?
June, when 97.1% of flights arrived on time. The worst was March at 67.5%.
When GRB to DTW flights are late, how late are they?
About 104 minutes on average across the flights that arrived more than 15 minutes behind schedule.
What these figures do and do not tell you
Everything on this page is counted from the flights that actually operated on GRB to DTW during January 2025 – August 2026, as reported by the airlines to the US Bureau of Transportation Statistics. "On time" is the federal definition: arriving at the gate within 15 minutes of the scheduled time.
A route's record is a description of the past, not a forecast. Weather, air traffic control and the aircraft's earlier flights that day drive most delays, and none of them are predictable from a historical rate. What the record does tell you is whether this route runs late more often than others, and which carrier on it has the better history — which is the part you can actually act on when you book.
Cancellations are counted separately from delays because they are a different problem for a traveller: a late flight still gets you there. How the grade is calculated →