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

Houston, TX (IAH) to Raleigh/Durham, NC (RDU) flight delay odds

81.2% of 906 official scheduled IAH-to-RDU flights arrived on time; 13.4% arrived at least 30 minutes late and 1.1% 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
81.2%arrived on time
13.4%30+ min late
1.1%cancelled
906scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late6.6%all scheduled flights
120+ minutes late2.5%all scheduled flights
Diverted0.1%did not reach as scheduled
Average arrival+6.0 mincompleted flights

Which departure time was most reliable for IAH to RDU?

Among qualifying IAH-to-RDU departure window results, Late morning had the highest on-time rate: 85.4% of 96 flights. Evening was lowest at 76.0% across 388 flights.

Departure windowFlightsOn time30+ minCancelled
Late morning9685.4%12.5%0.0%
Afternoon39484.8%10.7%1.5%
Evening38876.0%16.8%1.0%

Which weekday was most reliable for IAH to RDU?

Among qualifying IAH-to-RDU weekday results, Tuesday had the highest on-time rate: 85.3% of 116 flights. Sunday was lowest at 73.9% across 153 flights.

DayFlightsOn time30+ minCancelled
Monday13979.1%12.2%1.4%
Tuesday11685.3%10.3%0.0%
Wednesday10885.2%12.0%0.0%
Thursday15081.3%15.3%0.0%
Friday13884.8%14.5%0.0%
Saturday10281.4%13.7%2.0%
Sunday15373.9%14.4%3.9%

Which airline was most reliable for IAH to RDU?

Among qualifying IAH-to-RDU airline results, United Airlines had the highest on-time rate: 83.3% of 700 flights. Frontier Airlines was lowest at 74.6% across 205 flights.

AirlineFlightsOn time30+ minCancelled
United Airlines70083.3%11.7%0.7%
Frontier Airlines20574.6%19.0%2.4%
SkyWest Airlines10.0%0.0%0.0%

Which month was most reliable for IAH to RDU?

Among qualifying IAH-to-RDU month results, September 2025 had the highest on-time rate: 93.2% of 74 flights. July 2025 was lowest at 62.1% across 66 flights.

MonthFlightsOn time30+ minCancelled
July 20256662.1%31.8%0.0%
August 20256885.3%14.7%0.0%
September 20257493.2%6.8%0.0%
October 20258389.2%8.4%0.0%
November 20257982.3%8.9%3.8%
December 20257779.2%14.3%0.0%
January 20267386.3%5.5%6.8%
February 20267185.9%9.9%1.4%
March 202610076.0%18.0%1.0%
April 20267383.6%11.0%0.0%
May 20267678.9%13.2%0.0%
June 20266671.2%19.7%0.0%

What drove IAH to RDU delay minutes?

Late aircraft was the largest recorded IAH-to-RDU delay category, accounting for 49.3% of 11,531 BTS-attributed delay minutes during July 2025–June 2026.

Airline34.8%
Late aircraft49.3%
National airspace11.1%
Weather4.7%
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.