George Bush Intercontinental/Houston in October 2024

85.2%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 October 2024, reporting carriers scheduled 10,228 domestic departures from George Bush Intercontinental/Houston (IAH). 85.2% left less than 15 minutes late and 85.8% reached their destination on time; 0.5% were cancelled.

Nationally that month, 85.5% of flights departed on time and 85.8% arrived on time, so IAH departures were level with the national departure figure.

A year earlier, in October 2023, the airport had 9,918 departures with 83.4% leaving on time: a change of +1.8 points, with flights up 3%.

Flights arriving at IAH that month were on time 87.8% of the time (10,227 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, air carrier 42%, late-arriving aircraft 41% and national aviation system 15%.

On time 85.8%
Arrived 15+ minutes late 13.6%
Cancelled 0.5%
Diverted 0.1%

Every scheduled departure from IAH in October 2024, judged by arrival at the destination.

October 2024 against a year earlier, the airport's year and the nation

Measure	Oct 2024	Oct 2023	IAH, 12 months to Jul 2026	All reported flights, Oct 2024
Departed on time	85.2%	83.4%	78.1%	85.5%
Arrived on time	85.8%	82.3%	77.6%	85.8%
Cancelled	0.5%	0.4%	1.1%	1.0%
Average departure delay (late minutes only)	10.5 min	13.2 min	17.2 min	9.4 min
Scheduled departures a day	341	331	326	20,517
Scheduled departures	10,228	9,918	119,020	615,497

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
UA United Airlines	6,213	61%	86.3%	-1.7 min	0.5%
OO SkyWest Airlines	1,272	12%	83.9%	6.6 min	0.1%
NK Spirit Airlines	876	9%	87.9%	-5.7 min	1.0%
DL Delta Air Lines	689	7%	91.6%	-7.3 min	0.0%
AA American Airlines	623	6%	85.6%	1.1 min	0.6%
F9 Frontier Airlines	355	3%	65.9%	19.4 min	1.7%
MQ Envoy Air	80	1%	95.0%	-14.0 min	0.0%
B6 JetBlue Airways	62	1%	82.3%	-1.1 min	0.0%
AS Alaska Airlines	57	1%	89.5%	-11.2 min	0.0%
YX Republic Airline	1	0%	100.0%	-23.0 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
IAH–DFW	Houston to Dallas/Fort Worth	511	82.0%	3.0 min	0.0%
IAH–LAX	Houston to Los Angeles	476	91.6%	-6.1 min	0.2%
IAH–ORD	Houston to Chicago	473	88.8%	-5.4 min	0.0%
IAH–ATL	Houston to Atlanta	422	85.8%	-0.7 min	0.5%
IAH–DEN	Houston to Denver	403	90.6%	-3.8 min	0.0%
IAH–LAS	Houston to Las Vegas	387	86.8%	1.5 min	0.0%
IAH–LGA	Houston to New York	377	88.9%	-7.1 min	0.0%
IAH–EWR	Houston to Newark	341	85.3%	0.6 min	0.0%
IAH–MCO	Houston to Orlando	308	82.1%	-6.8 min	6.5%
IAH–MSY	Houston to New Orleans	279	93.9%	-4.4 min	0.0%
IAH–SFO	Houston to San Francisco	279	83.9%	1.7 min	0.0%
IAH–MIA	Houston to Miami	260	87.7%	-3.0 min	1.2%

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), October 2024.

Delay causes

BTS cause category	Share of delay minutes	National, Oct 2024	Minutes
Air carrier	41.8%	42.7%	37,359
Late-arriving aircraft	40.8%	37.4%	36,455
National Aviation System	14.6%	16.3%	13,007
Extreme weather	2.8%	3.4%	2,500
Security	0.0%	0.2%	31

89,352 delay minutes on 1,390 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 IAH on time in October 2024?

85.2% of 10,228 scheduled domestic departures left less than 15 minutes late, and 85.8% reached their destination on time. The national figures that month were 85.5% and 85.8%.

How does that compare with a year earlier?

In October 2023, 83.4% of 9,918 departures left on time and 0.4% were cancelled, against 85.2% and 0.5% in October 2024.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for October 2024; public domain. Domestic scheduled flights by reporting carriers, totals and averages only. The site's data runs through July 2026. Full record for IAH · methodology · corrections.