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

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

Historically, 81.2% of scheduled reportable flights on this direction arrived on time in July 2025–June 2026. The sample includes 906 flights.

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

When is this route most reliable?

The same route can behave differently through the day. These are scheduled departure windows, not actual departure times. Small time windows with fewer than 40 flights are withheld.

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

Weekday comparison

Day-of-week results use at least 30 scheduled flights per row. Look for broad patterns, not tiny percentage differences.

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%

Airline comparison

Marketing-carrier results make codeshare flights easier to compare as travelers buy them. Dedicated route-airline reports require at least 160 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%

Monthly trend

Month-by-month results show whether a twelve-month average hides an unusual period.

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 reported delay minutes?

BTS cause minutes are reported for qualifying delayed flights. These shares describe recorded delay minutes—not the chance that a particular cause will affect your next flight.

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.