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

Houston, TX (IAH) to Phoenix, AZ (PHX) flight delay odds

78.0% of 2,930 official scheduled IAH-to-PHX flights arrived on time; 14.7% 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 SIGNALGenerally reliable
78.0%arrived on time
14.7%30+ min late
0.8%cancelled
2,930scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late8.3%all scheduled flights
120+ minutes late3.4%all scheduled flights
Diverted0.1%did not reach as scheduled
Average arrival+9.2 mincompleted flights

Which departure time was most reliable for IAH to PHX?

Among qualifying IAH-to-PHX departure window results, Early morning had the highest on-time rate: 85.6% of 535 flights. Night was lowest at 62.3% across 114 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning53585.6%7.9%1.1%
Late morning42580.9%12.2%0.7%
Afternoon1,15079.8%13.0%0.7%
Evening70669.8%22.4%0.8%
Night11462.3%24.6%0.9%

Which weekday was most reliable for IAH to PHX?

Among qualifying IAH-to-PHX weekday results, Tuesday had the highest on-time rate: 83.1% of 366 flights. Sunday was lowest at 72.4% across 457 flights.

DayFlightsOn time30+ minCancelled
Monday46077.2%16.7%0.7%
Tuesday36683.1%12.3%0.8%
Wednesday36581.1%13.7%1.1%
Thursday45080.4%12.0%0.2%
Friday44174.6%16.3%1.4%
Saturday39178.5%14.3%0.5%
Sunday45772.4%16.6%1.1%

Which airline was most reliable for IAH to PHX?

Among qualifying IAH-to-PHX airline results, Envoy Air had the highest on-time rate: 82.1% of 67 flights. Frontier Airlines was lowest at 67.5% across 277 flights.

AirlineFlightsOn time30+ minCancelled
United Airlines1,78479.6%13.9%0.3%
American Airlines62280.4%11.9%1.4%
Frontier Airlines27767.5%21.7%1.1%
SkyWest Airlines18067.8%21.7%2.8%
Envoy Air6782.1%13.4%1.5%

Which month was most reliable for IAH to PHX?

Among qualifying IAH-to-PHX month results, February 2026 had the highest on-time rate: 90.5% of 242 flights. June 2026 was lowest at 67.7% across 235 flights.

MonthFlightsOn time30+ minCancelled
July 202521569.3%21.4%1.4%
August 202519772.1%19.8%1.0%
September 202519181.2%9.9%0.5%
October 202525474.8%14.6%0.0%
November 202526669.9%21.8%1.5%
December 202527087.4%8.9%0.0%
January 202625485.4%7.5%1.6%
February 202624290.5%5.4%0.4%
March 202630276.8%15.6%2.0%
April 202624883.5%12.1%0.8%
May 202625675.0%17.2%0.0%
June 202623567.7%23.0%0.4%

What drove IAH to PHX delay minutes?

Late aircraft was the largest recorded IAH-to-PHX delay category, accounting for 38.8% of 53,005 BTS-attributed delay minutes during July 2025–June 2026.

Airline38.0%
Late aircraft38.8%
National airspace14.5%
Weather8.6%
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.