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

Colorado Springs, CO (COS) to Houston, TX (IAH) flight delay odds

85.6% of 278 official scheduled COS-to-IAH flights arrived on time; 11.5% arrived at least 30 minutes late and 0.4% 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 SIGNALLower disruption
85.6%arrived on time
11.5%30+ min late
0.4%cancelled
278scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late8.6%all scheduled flights
120+ minutes late3.6%all scheduled flights
Diverted0.4%did not reach as scheduled
Average arrival+0.1 mincompleted flights

Which departure time was most reliable for COS to IAH?

Only Early morning met the COS-to-IAH departure window threshold: 85.3% of 273 scheduled flights arrived on time during July 2025–June 2026.

Departure windowFlightsOn time30+ minCancelled
Early morning27385.3%11.7%0.4%

Which weekday was most reliable for COS to IAH?

Among qualifying COS-to-IAH weekday results, Tuesday had the highest on-time rate: 95.1% of 41 flights. Sunday was lowest at 82.1% across 39 flights.

DayFlightsOn time30+ minCancelled
Monday4085.0%12.5%0.0%
Tuesday4195.1%4.9%0.0%
Wednesday3984.6%12.8%0.0%
Thursday4082.5%15.0%0.0%
Friday4085.0%12.5%0.0%
Saturday3984.6%10.3%2.6%
Sunday3982.1%12.8%0.0%

Which airline was most reliable for COS to IAH?

Only SkyWest Airlines met the COS-to-IAH airline threshold: 85.6% of 278 scheduled flights arrived on time during July 2025–June 2026.

AirlineFlightsOn time30+ minCancelled
SkyWest Airlines27885.6%11.5%0.4%

Which month was most reliable for COS to IAH?

Among qualifying COS-to-IAH month results, September 2025 had the highest on-time rate: 100.0% of 30 flights. July 2025 was lowest at 71.0% across 31 flights.

MonthFlightsOn time30+ minCancelled
July 20253171.0%25.8%0.0%
August 20253187.1%9.7%0.0%
September 202530100.0%0.0%0.0%
October 20253694.4%5.6%0.0%
November 20253086.7%10.0%0.0%
December 20251693.8%0.0%6.2%
February 20261675.0%18.8%0.0%
March 20263183.9%9.7%0.0%
April 20263076.7%20.0%0.0%
May 20262181.0%19.0%0.0%

What drove COS to IAH delay minutes?

Airline was the largest recorded COS-to-IAH delay category, accounting for 71.7% of 3,575 BTS-attributed delay minutes during July 2025–June 2026.

Airline71.7%
Late aircraft5.3%
National airspace7.7%
Weather15.2%
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.