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

Houston, TX (IAH) to Oklahoma City, OK (OKC) flight delay odds

Historically, 78.3% of scheduled reportable flights on this direction arrived on time in July 2025–June 2026. The sample includes 1,399 flights.

HISTORICAL ROUTE SIGNALGenerally reliable
78.3%arrived on time
15.5%30+ min late
1.1%cancelled
1,399scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late9.0%all scheduled flights
120+ minutes late3.4%all scheduled flights
Diverted0.2%did not reach as scheduled
Average arrival+9.5 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
Early morning23686.0%9.7%0.4%
Late morning7286.1%8.3%0.0%
Afternoon28083.2%10.7%0.7%
Evening57971.8%21.2%1.7%
Night23278.0%15.1%1.3%

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
Monday20577.1%17.1%1.0%
Tuesday20181.6%14.9%0.0%
Wednesday20381.3%12.3%0.5%
Thursday20284.7%11.9%0.0%
Friday20374.9%16.3%3.0%
Saturday18071.1%20.6%2.2%
Sunday20576.6%16.1%1.5%

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
SkyWest Airlines1,09277.5%16.1%1.1%
United Airlines30781.1%13.4%1.3%

Monthly trend

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

MonthFlightsOn time30+ minCancelled
July 202520671.8%21.4%1.0%
August 202513678.7%16.2%0.0%
September 20258086.2%11.2%0.0%
October 20259787.6%7.2%0.0%
November 20258278.0%12.2%0.0%
December 202510980.7%15.6%0.0%
January 202611176.6%12.6%6.3%
February 202612679.4%12.7%0.0%
March 202612777.2%18.1%3.1%
April 202611978.2%16.8%1.7%
May 202611681.9%10.3%0.9%
June 20269070.0%25.6%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.

Airline32.0%
Late aircraft47.6%
National airspace9.3%
Weather11.1%
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.