William P Hobby in December 2023

80.5%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 December 2023, reporting carriers scheduled 5,076 domestic departures from William P Hobby (HOU). 80.5% left less than 15 minutes late and 84.2% reached their destination on time; 0.3% were cancelled.

Nationally that month, 83.1% of flights departed on time and 83.8% arrived on time, so HOU departures were 2.6 points below the national departure figure.

Flights arriving at HOU that month were on time 84.7% of the time (5,076 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 46%, air carrier 34% and national aviation system 18%.

On time 84.2%
Arrived 15+ minutes late 15.4%
Cancelled 0.3%
Diverted 0.1%

Every scheduled departure from HOU in December 2023, judged by arrival at the destination.

December 2023 against a year earlier, the airport's year and the nation

Measure	Dec 2023	Year earlier	HOU, 12 months to Jul 2026	All reported flights, Dec 2023
Departed on time	80.5%	—	72.7%	83.1%
Arrived on time	84.2%	—	76.0%	83.8%
Cancelled	0.3%	—	0.9%	0.4%
Average departure delay (late minutes only)	10.0 min	—	15.0 min	11.6 min
Scheduled departures a day	169	—	148	19,013
Scheduled departures	5,076	—	53,894	570,394

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
WN Southwest Airlines	4,719	93%	84.1%	1.4 min	0.3%
MQ Envoy Air	141	3%	87.9%	-2.6 min	0.0%
DL Delta Air Lines	129	3%	93.0%	-8.7 min	0.0%
F9 Frontier Airlines	39	1%	71.8%	15.5 min	0.0%
G4 Allegiant Air	29	1%	65.5%	26.6 min	0.0%
OO SkyWest Airlines	19	0%	73.7%	60.5 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
HOU–DAL	Houston to Dallas	340	88.8%	-2.0 min	0.9%
HOU–ATL	Houston to Atlanta	307	87.9%	-3.1 min	0.0%
HOU–DEN	Houston to Denver	265	87.5%	-2.3 min	0.0%
HOU–MSY	Houston to New Orleans	207	87.4%	-0.7 min	0.5%
HOU–MCO	Houston to Orlando	196	83.2%	4.7 min	0.5%
HOU–LAS	Houston to Las Vegas	181	79.0%	5.4 min	0.0%
HOU–PHX	Houston to Phoenix	181	83.4%	3.2 min	0.0%
HOU–DFW	Houston to Dallas/Fort Worth	160	86.3%	4.9 min	0.0%
HOU–MDW	Houston to Chicago	157	78.3%	1.3 min	2.5%
HOU–BNA	Houston to Nashville	152	86.8%	1.1 min	0.0%
HOU–AUS	Houston to Austin	150	77.3%	4.1 min	0.0%
HOU–SAT	Houston to San Antonio	150	82.7%	1.0 min	0.0%

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), December 2023.

Delay causes

BTS cause category	Share of delay minutes	National, Dec 2023	Minutes
Air carrier	33.9%	37.1%	12,516
Late-arriving aircraft	45.5%	38.8%	16,819
National Aviation System	17.5%	17.6%	6,467
Extreme weather	1.8%	6.2%	672
Security	1.3%	0.3%	498

36,972 delay minutes on 783 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 December 2023?

80.5% of 5,076 scheduled domestic departures left less than 15 minutes late, and 84.2% reached their destination on time. The national figures that month were 83.1% and 83.8%.

How does that compare with a year earlier?

December 2022 is outside the 36 months on file, or the airport had too few reported flights that month.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for December 2023; 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.