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

Houston, TX (IAH) to New Orleans, LA (MSY) flight delay odds

Historically, 82.6% of scheduled reportable flights on this direction arrived on time in July 2025–June 2026. The sample includes 2,962 flights.

HISTORICAL ROUTE SIGNALLower disruption
82.6%arrived on time
12.0%30+ min late
0.3%cancelled
2,962scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late6.5%all scheduled flights
120+ minutes late2.0%all scheduled flights
Diverted0.1%did not reach as scheduled
Average arrival+3.0 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
Early morning41491.8%4.3%0.0%
Late morning67985.6%10.6%0.1%
Afternoon72282.1%11.9%0.6%
Evening79374.8%17.8%0.5%
Night35484.5%10.5%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
Monday45482.8%10.8%0.7%
Tuesday42184.8%11.4%0.0%
Wednesday41383.3%12.1%0.2%
Thursday43482.7%9.4%0.2%
Friday43682.3%12.8%0.2%
Saturday36882.3%13.0%0.3%
Sunday43679.8%14.2%0.5%

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
United Airlines2,78382.6%11.8%0.3%
Spirit Airlines14883.1%12.8%0.7%
Frontier Airlines2774.1%18.5%3.7%
SkyWest Airlines475.0%25.0%0.0%

Monthly trend

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

MonthFlightsOn time30+ minCancelled
July 202524266.5%25.2%1.7%
August 202524880.2%14.9%0.4%
September 202528091.8%5.4%0.0%
October 202528685.3%8.4%0.0%
November 202525482.7%12.2%0.0%
December 202522487.1%8.9%0.0%
January 202623687.7%8.9%0.0%
February 202622786.3%9.7%0.0%
March 202625684.4%9.8%1.6%
April 202627087.0%8.5%0.0%
May 202623379.4%13.3%0.0%
June 202620668.4%21.4%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.

Airline37.0%
Late aircraft44.5%
National airspace13.1%
Weather5.4%
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.