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

Salt Lake City, UT (SLC) to Houston, TX (IAH) flight delay odds

83.6% of 1,957 official scheduled SLC-to-IAH flights arrived on time; 9.1% arrived at least 30 minutes late and 0.8% 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
83.6%arrived on time
9.1%30+ min late
0.8%cancelled
1,957scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late4.5%all scheduled flights
120+ minutes late2.4%all scheduled flights
Diverted0.4%did not reach as scheduled
Average arrival+2.5 mincompleted flights

Which departure time was most reliable for SLC to IAH?

Among qualifying SLC-to-IAH departure window results, Early morning had the highest on-time rate: 90.7% of 689 flights. Evening was lowest at 77.8% across 365 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning68990.7%4.4%0.9%
Late morning13684.6%5.9%0.7%
Afternoon76779.9%11.2%1.0%
Evening36577.8%15.1%0.3%

Which weekday was most reliable for SLC to IAH?

Among qualifying SLC-to-IAH weekday results, Friday had the highest on-time rate: 84.9% of 285 flights. Wednesday was lowest at 80.1% across 281 flights.

DayFlightsOn time30+ minCancelled
Monday28182.9%8.5%1.4%
Tuesday28484.9%8.1%1.1%
Wednesday28180.1%11.7%0.7%
Thursday28483.8%9.9%0.7%
Friday28584.9%9.8%0.7%
Saturday25684.8%7.4%0.8%
Sunday28684.3%8.4%0.3%

Which airline was most reliable for SLC to IAH?

Among qualifying SLC-to-IAH airline results, United Airlines had the highest on-time rate: 85.9% of 878 flights. Delta Air Lines was lowest at 81.6% across 1,011 flights.

AirlineFlightsOn time30+ minCancelled
Delta Air Lines1,01181.6%10.5%0.2%
United Airlines87885.9%7.9%1.5%
SkyWest Airlines6885.3%5.9%1.5%

Which month was most reliable for SLC to IAH?

Among qualifying SLC-to-IAH month results, September 2025 had the highest on-time rate: 91.3% of 161 flights. July 2025 was lowest at 68.8% across 154 flights.

MonthFlightsOn time30+ minCancelled
July 202515468.8%16.9%0.6%
August 202516076.2%11.9%0.6%
September 202516191.3%5.0%0.0%
October 202514688.4%9.6%0.7%
November 202513786.1%8.8%0.0%
December 202518487.5%5.4%1.1%
January 202619389.6%4.7%0.5%
February 202617690.9%5.1%0.0%
March 202621179.6%10.9%3.3%
April 202614484.7%6.9%0.0%
May 202614979.9%14.1%0.7%
June 202614278.9%12.7%1.4%

What drove SLC to IAH delay minutes?

Airline was the largest recorded SLC-to-IAH delay category, accounting for 52.0% of 22,304 BTS-attributed delay minutes during July 2025–June 2026.

Airline52.0%
Late aircraft20.1%
National airspace22.9%
Weather5.0%
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.