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

Houston, TX (IAH) to Dallas/Fort Worth, TX (DFW) flight delay odds

72.8% of 5,779 official scheduled IAH-to-DFW flights arrived on time; 17.5% arrived at least 30 minutes late and 2.8% 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 SIGNALVariable
72.8%arrived on time
17.5%30+ min late
2.8%cancelled
5,779scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late11.4%all scheduled flights
120+ minutes late5.7%all scheduled flights
Diverted0.2%did not reach as scheduled
Average arrival+18.1 mincompleted flights

Which departure time was most reliable for IAH to DFW?

Among qualifying IAH-to-DFW departure window results, Early morning had the highest on-time rate: 80.9% of 1,502 flights. Evening was lowest at 61.6% across 1,292 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning1,50280.9%11.7%3.1%
Late morning95777.1%13.2%2.5%
Afternoon1,78470.7%19.1%2.9%
Evening1,29261.6%26.4%2.7%
Night24479.9%11.5%2.0%

Which weekday was most reliable for IAH to DFW?

Among qualifying IAH-to-DFW weekday results, Wednesday had the highest on-time rate: 77.6% of 834 flights. Sunday was lowest at 66.6% across 827 flights.

DayFlightsOn time30+ minCancelled
Monday85969.0%18.6%2.9%
Tuesday81577.5%14.8%2.1%
Wednesday83477.6%16.4%1.2%
Thursday86574.9%15.6%1.5%
Friday84573.4%16.6%3.0%
Saturday73470.2%19.6%5.2%
Sunday82766.6%20.9%4.1%

Which airline was most reliable for IAH to DFW?

Among qualifying IAH-to-DFW airline results, Envoy Air had the highest on-time rate: 75.6% of 840 flights. American Airlines was lowest at 70.4% across 2,464 flights.

AirlineFlightsOn time30+ minCancelled
American Airlines2,46470.4%19.6%3.7%
United Airlines2,41574.3%16.2%1.7%
Envoy Air84075.6%14.9%3.1%
SkyWest Airlines5371.7%15.1%9.4%
PSA Airlines757.1%42.9%0.0%

Which month was most reliable for IAH to DFW?

Among qualifying IAH-to-DFW month results, February 2026 had the highest on-time rate: 85.0% of 413 flights. June 2026 was lowest at 62.1% across 464 flights.

MonthFlightsOn time30+ minCancelled
July 202545765.2%23.2%4.6%
August 202546562.4%26.2%2.6%
September 202549879.3%12.7%1.6%
October 202550379.3%10.9%1.4%
November 202547568.8%19.2%4.6%
December 202549974.9%13.6%0.2%
January 202647576.2%11.2%8.2%
February 202641385.0%9.7%0.5%
March 202648877.3%15.2%2.9%
April 202652474.0%19.7%0.6%
May 202651868.9%20.8%3.1%
June 202646462.1%27.4%3.7%

What drove IAH to DFW delay minutes?

Late aircraft was the largest recorded IAH-to-DFW delay category, accounting for 42.0% of 138,886 BTS-attributed delay minutes during July 2025–June 2026.

Airline26.6%
Late aircraft42.0%
National airspace19.2%
Weather12.1%
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.