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

Houston, TX (HOU) to Birmingham, AL (BHM) flight delay odds

Historically, 76.2% of scheduled reportable flights on this direction arrived on time in July 2025–June 2026. The sample includes 453 flights.

HISTORICAL ROUTE SIGNALGenerally reliable
76.2%arrived on time
12.1%30+ min late
0.4%cancelled
453scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late5.1%all scheduled flights
120+ minutes late1.8%all scheduled flights
Diverted0.0%did not reach as scheduled
Average arrival+7.8 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 morning21989.5%3.7%0.5%
Afternoon14863.5%20.3%0.7%
Evening7463.5%18.9%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
Monday5278.8%11.5%0.0%
Tuesday5386.8%5.7%0.0%
Wednesday5377.4%13.2%0.0%
Thursday5273.1%15.4%0.0%
Friday5276.9%13.5%0.0%
Saturday8273.2%13.4%1.2%
Sunday10972.5%11.9%0.9%

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
Southwest Airlines45376.2%12.1%0.4%

Monthly trend

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

MonthFlightsOn time30+ minCancelled
July 20254372.1%11.6%0.0%
August 20254087.5%7.5%0.0%
September 20253892.1%0.0%0.0%
October 20253976.9%12.8%0.0%
November 20253485.3%11.8%0.0%
December 20253488.2%5.9%2.9%
January 20263293.8%6.2%0.0%
February 20263187.1%6.5%0.0%
March 20263943.6%33.3%0.0%
April 20264163.4%12.2%2.4%
May 20264463.6%20.5%0.0%
June 20263871.1%13.2%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.

Airline31.7%
Late aircraft57.7%
National airspace9.1%
Weather1.5%
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.