BTS DATA COMPLETE THROUGH JUNE 2026HISTORICAL ODDS · NOT LIVE FLIGHT STATUS
DelayOddsKnow the route before you book
GRBDTW

Green Bay, WI (GRB) to Detroit, MI (DTW) flight delay odds

Historically, 78.3% of scheduled reportable flights on this direction arrived on time in July 2025–June 2026. The sample includes 812 flights.

HISTORICAL ROUTE SIGNALGenerally reliable
78.3%arrived on time
14.8%30+ min late
2.1%cancelled
812scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late10.7%all scheduled flights
120+ minutes late5.9%all scheduled flights
Diverted0.2%did not reach as scheduled
Average arrival+9.1 mincompleted flights

When is this route most reliable?

The same route can behave differently through the day. These are scheduled departure windows, not actual departure times. Small time windows with fewer than 40 flights are withheld.

Departure windowFlightsOn time30+ minCancelled
Early morning26985.1%10.4%1.9%
Late morning26672.9%19.5%3.0%
Afternoon5174.5%19.6%2.0%
Evening22677.4%13.3%1.3%

Weekday comparison

Day-of-week results use at least 30 scheduled flights per row. Look for broad patterns, not tiny percentage differences.

DayFlightsOn time30+ minCancelled
Monday12077.5%11.7%5.8%
Tuesday11882.2%15.3%1.7%
Wednesday11478.9%14.9%0.9%
Thursday11484.2%9.6%0.9%
Friday11573.9%20.0%1.7%
Saturday11675.9%16.4%0.9%
Sunday11575.7%15.7%2.6%

Airline comparison

Marketing-carrier results make codeshare flights easier to compare as travelers buy them. Dedicated route-airline reports require at least 160 flights.

AirlineFlightsOn time30+ minCancelled
SkyWest Airlines62578.1%15.4%2.2%
Delta Air Lines18779.1%12.8%1.6%

Monthly trend

Month-by-month results show whether a twelve-month average hides an unusual period.

MonthFlightsOn time30+ minCancelled
July 2025250.0%50.0%0.0%
August 20251478.6%14.3%0.0%
September 20252495.8%0.0%0.0%
October 20258488.1%8.3%0.0%
November 20258877.3%14.8%6.8%
December 20259068.9%24.4%4.4%
January 20268867.0%21.6%0.0%
February 20268184.0%11.1%0.0%
March 20269062.2%23.3%6.7%
April 20269080.0%14.4%0.0%
May 20269381.7%12.9%1.1%
June 20266897.1%1.5%0.0%

What drove reported delay minutes?

BTS cause minutes are reported for qualifying delayed flights. These shares describe recorded delay minutes—not the chance that a particular cause will affect your next flight.

Airline63.5%
Late aircraft12.2%
National airspace6.1%
Weather18.2%
Security0.0%
This is historical evidence, not a forecast.

Weather, schedules and operations change. For a trip you have already booked, use the airline or airport for live status.