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

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

67.6% of 5,780 official scheduled DFW-to-IAH flights arrived on time; 19.6% arrived at least 30 minutes late and 2.9% 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
67.6%arrived on time
19.6%30+ min late
2.9%cancelled
5,780scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late11.6%all scheduled flights
120+ minutes late5.6%all scheduled flights
Diverted0.1%did not reach as scheduled
Average arrival+19.5 mincompleted flights

Which departure time was most reliable for DFW to IAH?

Among qualifying DFW-to-IAH departure window results, Early morning had the highest on-time rate: 76.8% of 1,282 flights. Night was lowest at 54.3% across 473 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning1,28276.8%10.7%1.6%
Late morning83374.7%15.1%2.3%
Afternoon1,86267.8%19.9%3.1%
Evening1,33058.9%26.3%3.9%
Night47354.3%31.3%4.2%

Which weekday was most reliable for DFW to IAH?

Among qualifying DFW-to-IAH weekday results, Tuesday had the highest on-time rate: 74.2% of 811 flights. Sunday was lowest at 61.0% across 828 flights.

DayFlightsOn time30+ minCancelled
Monday85966.4%21.8%2.6%
Tuesday81174.2%14.8%1.8%
Wednesday84073.3%16.0%1.5%
Thursday86669.5%18.4%2.0%
Friday84966.1%20.3%2.8%
Saturday72762.3%21.7%6.2%
Sunday82861.0%24.4%4.0%

Which airline was most reliable for DFW to IAH?

Among qualifying DFW-to-IAH airline results, Envoy Air had the highest on-time rate: 75.4% of 840 flights. American Airlines was lowest at 57.4% across 2,465 flights.

AirlineFlightsOn time30+ minCancelled
American Airlines2,46557.4%27.7%3.7%
United Airlines2,41475.2%14.3%2.0%
Envoy Air84075.4%11.3%3.0%
SkyWest Airlines5371.7%13.2%7.5%
PSA Airlines875.0%25.0%0.0%

Which month was most reliable for DFW to IAH?

Among qualifying DFW-to-IAH month results, February 2026 had the highest on-time rate: 86.0% of 413 flights. June 2026 was lowest at 55.8% across 464 flights.

MonthFlightsOn time30+ minCancelled
July 202545766.1%20.8%4.6%
August 202546456.9%27.6%2.8%
September 202549869.1%16.7%2.2%
October 202550364.0%18.3%1.6%
November 202547464.1%21.5%4.9%
December 202550271.3%16.5%0.2%
January 202647573.7%12.8%8.6%
February 202641386.0%9.9%0.5%
March 202648968.1%18.6%2.7%
April 202652371.9%20.7%0.8%
May 202651866.0%21.8%2.9%
June 202646455.8%29.1%3.7%

What drove DFW to IAH delay minutes?

Late aircraft was the largest recorded DFW-to-IAH delay category, accounting for 43.9% of 136,993 BTS-attributed delay minutes during July 2025–June 2026.

Airline26.3%
Late aircraft43.9%
National airspace23.0%
Weather6.8%
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.