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

Houston, TX (IAH) to Pittsburgh, PA (PIT) flight delay odds

Historically, 80.5% of scheduled reportable flights on this direction arrived on time in July 2025–June 2026. The sample includes 738 flights.

HISTORICAL ROUTE SIGNALLower disruption
80.5%arrived on time
11.5%30+ min late
0.1%cancelled
738scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late6.4%all scheduled flights
120+ minutes late3.1%all scheduled flights
Diverted0.3%did not reach as scheduled
Average arrival+4.9 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 morning10089.0%5.0%0.0%
Late morning10591.4%5.7%1.0%
Afternoon22380.7%12.1%0.0%
Evening31073.9%15.2%0.0%

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
Monday11782.9%12.8%0.0%
Tuesday9786.6%5.2%0.0%
Wednesday11083.6%11.8%0.0%
Thursday11575.7%13.0%0.0%
Friday11480.7%11.4%0.0%
Saturday8281.7%9.8%0.0%
Sunday10372.8%15.5%1.0%

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 Airlines73180.7%11.2%0.1%
SkyWest Airlines757.1%42.9%0.0%

Monthly trend

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

MonthFlightsOn time30+ minCancelled
July 20254856.2%29.2%0.0%
August 20254868.8%18.8%0.0%
September 20254977.6%10.2%0.0%
October 20256684.8%7.6%0.0%
November 20257783.1%9.1%0.0%
December 20257588.0%5.3%0.0%
January 20263287.5%9.4%3.1%
February 20264295.2%4.8%0.0%
March 20266271.0%19.4%0.0%
April 20268887.5%6.8%0.0%
May 20266981.2%13.0%0.0%
June 20268279.3%11.0%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.

Airline31.4%
Late aircraft51.5%
National airspace11.6%
Weather5.5%
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.