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

Houston, TX (IAH) to Detroit, MI (DTW) flight delay odds

77.6% of 2,137 official scheduled IAH-to-DTW flights arrived on time; 12.8% arrived at least 30 minutes late and 1.2% were cancelled during July 2025–June 2026.

Source: U.S. Bureau of Transportation Statistics · Reporting window: July 2025–June 2026 · Updated September 16, 2026

HISTORICAL ROUTE SIGNALGenerally reliable
77.6%arrived on time
12.8%30+ min late
1.2%cancelled
2,137scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late6.6%all scheduled flights
120+ minutes late3.0%all scheduled flights
Diverted0.3%did not reach as scheduled
Average arrival+8.3 mincompleted flights

Which departure time was most reliable for IAH to DTW?

Among qualifying IAH-to-DTW departure window results, Early morning had the highest on-time rate: 85.8% of 576 flights. Evening was lowest at 68.4% across 652 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning57685.8%6.2%2.1%
Late morning13577.8%11.1%0.7%
Afternoon77479.3%12.1%0.4%
Evening65268.4%19.8%1.5%

Which weekday was most reliable for IAH to DTW?

Among qualifying IAH-to-DTW weekday results, Wednesday had the highest on-time rate: 83.2% of 298 flights. Sunday was lowest at 73.7% across 315 flights.

DayFlightsOn time30+ minCancelled
Monday32176.3%12.1%1.9%
Tuesday30381.5%10.2%0.0%
Wednesday29883.2%11.1%0.7%
Thursday31177.8%12.5%0.6%
Friday32475.6%14.5%1.5%
Saturday26575.5%17.0%0.8%
Sunday31573.7%12.7%2.9%

Which airline was most reliable for IAH to DTW?

Among qualifying IAH-to-DTW airline results, Delta Air Lines had the highest on-time rate: 81.3% of 1,322 flights. Frontier Airlines was lowest at 66.9% across 121 flights.

AirlineFlightsOn time30+ minCancelled
Delta Air Lines1,32281.3%10.4%0.8%
Spirit Airlines40874.5%15.0%2.5%
United Airlines28369.3%18.7%1.4%
Frontier Airlines12166.9%19.0%1.7%
SkyWest Airlines3100.0%0.0%0.0%

Which month was most reliable for IAH to DTW?

Among qualifying IAH-to-DTW month results, September 2025 had the highest on-time rate: 89.4% of 180 flights. March 2026 was lowest at 64.7% across 204 flights.

MonthFlightsOn time30+ minCancelled
July 202519873.7%18.2%1.5%
August 202520676.7%11.7%1.0%
September 202518089.4%4.4%0.0%
October 202517187.7%6.4%0.0%
November 202519081.1%10.0%1.1%
December 202516978.1%13.0%1.8%
January 202613276.5%12.1%1.5%
February 202615080.0%10.0%0.7%
March 202620464.7%21.6%4.9%
April 202618276.4%16.5%0.5%
May 202618276.4%13.7%0.5%
June 202617373.4%13.9%0.6%

What drove IAH to DTW delay minutes?

Airline was the largest recorded IAH-to-DTW delay category, accounting for 46.5% of 32,437 BTS-attributed delay minutes during July 2025–June 2026.

Airline46.5%
Late aircraft33.1%
National airspace15.5%
Weather4.9%
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.