William P Hobby in July 2026

62.8%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 July 2026, reporting carriers scheduled 4,773 domestic departures from William P Hobby (HOU). 62.8% left less than 15 minutes late and 68.2% reached their destination on time; 1.0% were cancelled.

Nationally that month, 68.8% of flights departed on time and 69.4% arrived on time, so HOU departures were 6.0 points below the national departure figure.

A year earlier, in July 2025, the airport had 5,093 departures with 66.2% leaving on time: a change of −3.4 points, with flights down 6%.

Flights arriving at HOU that month were on time 69.0% of the time (4,774 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 43%, air carrier 35% and national aviation system 15%.

On time 68.2%
Arrived 15+ minutes late 30.3%
Cancelled 1.0%
Diverted 0.5%

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

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

Measure	Jul 2026	Jul 2025	HOU, 12 months to Jul 2026	All reported flights, Jul 2026
Departed on time	62.8%	66.2%	72.7%	68.8%
Arrived on time	68.2%	69.8%	76.0%	69.4%
Cancelled	1.0%	0.8%	0.9%	2.6%
Average departure delay (late minutes only)	22.1 min	20.6 min	15.0 min	24.1 min
Scheduled departures a day	159	170	148	21,066
Scheduled departures	4,773	5,093	53,894	631,970

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
WN Southwest Airlines	4,450	93%	67.9%	12.4 min	0.9%
DL Delta Air Lines	120	3%	75.0%	15.3 min	2.5%
OO SkyWest Airlines	83	2%	63.9%	42.7 min	1.2%
OH PSA Airlines	51	1%	74.5%	29.0 min	2.0%
G4 Allegiant Air	40	1%	77.5%	75.9 min	0.0%
MQ Envoy Air	29	1%	75.9%	9.4 min	3.4%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
HOU–DAL	Houston to Dallas	331	71.9%	9.9 min	1.5%
HOU–ATL	Houston to Atlanta	240	70.0%	17.4 min	1.7%
HOU–DEN	Houston to Denver	224	77.7%	7.7 min	0.0%
HOU–MCO	Houston to Orlando	200	71.5%	10.2 min	0.0%
HOU–MSY	Houston to New Orleans	200	74.0%	10.2 min	0.5%
HOU–MDW	Houston to Chicago	193	53.9%	20.8 min	2.1%
HOU–BNA	Houston to Nashville	174	67.8%	11.1 min	0.6%
HOU–LAS	Houston to Las Vegas	165	80.0%	4.8 min	0.0%
HOU–DFW	Houston to Dallas/Fort Worth	163	69.3%	32.6 min	1.8%
HOU–STL	Houston to St. Louis	159	78.0%	6.8 min	1.9%
HOU–BWI	Houston to Baltimore	150	60.7%	20.4 min	2.7%
HOU–PHX	Houston to Phoenix	150	67.3%	10.5 min	0.7%

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), July 2026.

Delay causes

BTS cause category	Share of delay minutes	National, Jul 2026	Minutes
Air carrier	34.8%	31.7%	29,174
Late-arriving aircraft	43.1%	41.8%	36,111
National Aviation System	15.0%	19.9%	12,590
Extreme weather	7.0%	6.5%	5,893
Security	0.1%	0.1%	90

83,858 delay minutes on 1,444 flights that arrived 15 or more minutes late and carried a cause report. Carriers assign the categories; see what each category means.

Questions and answers

How many flights left HOU on time in July 2026?

62.8% of 4,773 scheduled domestic departures left less than 15 minutes late, and 68.2% reached their destination on time. The national figures that month were 68.8% and 69.4%.

How does that compare with a year earlier?

In July 2025, 66.2% of 5,093 departures left on time and 0.8% were cancelled, against 62.8% and 1.0% in July 2026.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for July 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.