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

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

82.5% of 906 official scheduled RDU-to-IAH flights arrived on time; 11.6% arrived at least 30 minutes late and 1.2% 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
82.5%arrived on time
11.6%30+ min late
1.2%cancelled
906scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late6.3%all scheduled flights
120+ minutes late2.9%all scheduled flights
Diverted0.0%did not reach as scheduled
Average arrival+1.0 mincompleted flights

Which departure time was most reliable for RDU to IAH?

Among qualifying RDU-to-IAH departure window results, Early morning had the highest on-time rate: 90.5% of 367 flights. Evening was lowest at 62.2% across 164 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning36790.5%6.0%1.4%
Late morning10680.2%11.3%0.9%
Afternoon26984.8%11.5%0.4%
Evening16462.2%24.4%2.4%

Which weekday was most reliable for RDU to IAH?

Among qualifying RDU-to-IAH weekday results, Tuesday had the highest on-time rate: 87.9% of 116 flights. Sunday was lowest at 77.1% across 153 flights.

DayFlightsOn time30+ minCancelled
Monday13979.9%14.4%2.2%
Tuesday11687.9%7.8%0.0%
Wednesday10884.3%12.0%0.9%
Thursday15081.3%10.7%0.0%
Friday13884.1%14.5%0.0%
Saturday10285.3%9.8%0.0%
Sunday15377.1%11.1%4.6%

Which airline was most reliable for RDU to IAH?

Among qualifying RDU-to-IAH airline results, United Airlines had the highest on-time rate: 85.9% of 700 flights. Frontier Airlines was lowest at 70.7% across 205 flights.

AirlineFlightsOn time30+ minCancelled
United Airlines70085.9%9.3%0.9%
Frontier Airlines20570.7%19.5%2.4%
SkyWest Airlines1100.0%0.0%0.0%

Which month was most reliable for RDU to IAH?

Among qualifying RDU-to-IAH month results, September 2025 had the highest on-time rate: 93.2% of 74 flights. July 2025 was lowest at 56.1% across 66 flights.

MonthFlightsOn time30+ minCancelled
July 20256656.1%25.8%1.5%
August 20256883.8%10.3%0.0%
September 20257493.2%5.4%0.0%
October 20258383.1%12.0%1.2%
November 20257972.2%17.7%3.8%
December 20257781.8%14.3%0.0%
January 20267384.9%8.2%5.5%
February 20267188.7%7.0%1.4%
March 202610083.0%11.0%1.0%
April 20267390.4%6.8%0.0%
May 20267686.8%7.9%0.0%
June 20266683.3%13.6%0.0%

What drove RDU to IAH delay minutes?

Late aircraft was the largest recorded RDU-to-IAH delay category, accounting for 42.6% of 12,255 BTS-attributed delay minutes during July 2025–June 2026.

Airline22.0%
Late aircraft42.6%
National airspace32.4%
Weather3.0%
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.