On-Time Report

Airports › Houston (HOU) › April 2026

Airport month · April 2026

William P Hobby in April 2026

73.4%departed on time

BTS: A flight is counted as on time if it arrived less than 15 minutes after its scheduled time. Only carriers with at least 0.5 percent of domestic scheduled passenger revenue report.

In April 2026, reporting carriers scheduled 4,418 domestic departures from William P Hobby (HOU). 73.4% left less than 15 minutes late and 75.5% reached their destination on time; 0.1% were cancelled.

Nationally that month, 79.1% of flights departed on time and 78.9% arrived on time, so HOU departures were 5.7 points below the national departure figure.

A year earlier, in April 2025, the airport had 4,624 departures with 76.4% leaving on time: a change of −3.0 points, with flights down 4%.

Flights arriving at HOU that month were on time 76.9% of the time (4,419 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 41%, air carrier 36% and national aviation system 20%.

Every scheduled departure from HOU in April 2026, judged by arrival at the destination.

April 2026 against a year earlier, the airport's year and the nation

MeasureApr 2026Apr 2025HOU, 12 months to Jul 2026All reported flights, Apr 2026
Departed on time73.4%76.4%72.7%79.1%
Arrived on time75.5%78.7%76.0%78.9%
Cancelled0.1%0.6%0.9%0.9%
Average departure delay (late minutes only)14.0 min15.1 min15.0 min14.5 min
Scheduled departures a day14715414819,931
Scheduled departures4,4184,62453,894597,919

Airlines that month

Reporting carrierFlightsShareOn timeAvg arrival delayCancelled
WN Southwest Airlines4,14794%75.5%6.7 min0.1%
DL Delta Air Lines1163%88.8%8.1 min0.9%
OH PSA Airlines922%64.1%25.2 min0.0%
MQ Envoy Air301%60.0%21.8 min3.3%
OO SkyWest Airlines241%83.3%26.5 min0.0%
G4 Allegiant Air90%44.4%56.6 min0.0%

Busiest routes that month

RouteCitiesFlightsOn timeAvg arrival delayCancelled
HOU–DALHouston to Dallas34580.6%1.3 min0.6%
HOU–ATLHouston to Atlanta23583.8%7.0 min0.4%
HOU–MSYHouston to New Orleans19386.5%-2.8 min0.0%
HOU–PHXHouston to Phoenix19373.1%7.8 min0.0%
HOU–MCOHouston to Orlando18180.7%3.0 min0.0%
HOU–DENHouston to Denver17780.8%0.4 min0.0%
HOU–LASHouston to Las Vegas16475.0%10.1 min0.0%
HOU–BNAHouston to Nashville15080.0%4.0 min0.0%
HOU–MDWHouston to Chicago15072.0%9.5 min0.0%
HOU–DFWHouston to Dallas/Fort Worth14666.4%24.7 min0.7%
HOU–STLHouston to St. Louis13279.5%4.4 min0.0%
HOU–BWIHouston to Baltimore12075.0%6.8 min0.0%

By scheduled departure hour

On-time share:under 62%6270768288% and over
Share of departures that left less than 15 minutes late, by scheduled hour (local time), April 2026.

Delay causes

BTS cause categoryShare of delay minutesNational, Apr 2026Minutes
Air carrier35.9%33.5%18,999
Late-arriving aircraft40.7%40.4%21,555
National Aviation System20.3%21.0%10,726
Extreme weather3.0%5.0%1,566
Security0.1%0.1%62
52,908 delay minutes on 1,066 flights that arrived 15 or more minutes late and carried a cause report. Carriers assign the categories; see what each category means.
← March 2026May 2026 →

Questions and answers

How many flights left HOU on time in April 2026?

73.4% of 4,418 scheduled domestic departures left less than 15 minutes late, and 75.5% reached their destination on time. The national figures that month were 79.1% and 78.9%.

How does that compare with a year earlier?

In April 2025, 76.4% of 4,624 departures left on time and 0.6% were cancelled, against 73.4% and 0.1% in April 2026.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for April 2026; public domain. Domestic scheduled flights by reporting carriers, totals and averages only. The site's data runs through July 2026. Full record for HOU · methodology · corrections.