George Bush Intercontinental/Houston in June 2024

67.8%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 June 2024, reporting carriers scheduled 10,028 domestic departures from George Bush Intercontinental/Houston (IAH). 67.8% left less than 15 minutes late and 66.7% reached their destination on time; 1.3% were cancelled.

Nationally that month, 73.7% of flights departed on time and 73.9% arrived on time, so IAH departures were 5.9 points below the national departure figure.

Flights arriving at IAH that month were on time 73.4% of the time (10,026 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 43%, air carrier 32% and national aviation system 18%.

On time 66.7%
Arrived 15+ minutes late 31.5%
Cancelled 1.3%
Diverted 0.5%

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

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

Measure	Jun 2024	Year earlier	IAH, 12 months to Jul 2026	All reported flights, Jun 2024
Departed on time	67.8%	—	78.1%	73.7%
Arrived on time	66.7%	—	77.6%	73.9%
Cancelled	1.3%	—	1.1%	1.3%
Average departure delay (late minutes only)	26.6 min	—	17.2 min	19.7 min
Scheduled departures a day	334	—	326	20,371
Scheduled departures	10,028	—	119,020	611,132

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
UA United Airlines	5,802	58%	65.4%	20.4 min	1.2%
OO SkyWest Airlines	970	10%	67.5%	29.5 min	1.3%
NK Spirit Airlines	938	9%	68.8%	14.7 min	1.6%
DL Delta Air Lines	688	7%	78.8%	6.7 min	0.4%
AA American Airlines	681	7%	62.3%	33.5 min	2.8%
WN Southwest Airlines	381	4%	75.6%	9.0 min	0.0%
F9 Frontier Airlines	344	3%	46.8%	49.1 min	2.9%
AS Alaska Airlines	90	1%	75.6%	6.4 min	1.1%
MQ Envoy Air	74	1%	78.4%	8.6 min	4.1%
B6 JetBlue Airways	60	1%	76.7%	13.9 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
IAH–ORD	Houston to Chicago	489	69.1%	19.4 min	0.8%
IAH–LAX	Houston to Los Angeles	472	70.8%	11.5 min	0.6%
IAH–DEN	Houston to Denver	455	67.9%	13.3 min	0.4%
IAH–DFW	Houston to Dallas/Fort Worth	440	59.8%	34.9 min	3.0%
IAH–ATL	Houston to Atlanta	399	70.2%	15.8 min	0.8%
IAH–LGA	Houston to New York	365	70.7%	16.3 min	1.4%
IAH–LAS	Houston to Las Vegas	359	70.5%	13.7 min	1.1%
IAH–EWR	Houston to Newark	330	59.4%	25.8 min	2.4%
IAH–MCO	Houston to Orlando	305	60.0%	29.4 min	2.0%
IAH–MIA	Houston to Miami	270	58.5%	24.8 min	4.8%
IAH–SFO	Houston to San Francisco	270	72.2%	14.0 min	0.7%
IAH–CLT	Houston to Charlotte	237	60.8%	25.8 min	3.4%

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), June 2024.

Delay causes

BTS cause category	Share of delay minutes	National, Jun 2024	Minutes
Air carrier	31.8%	34.4%	79,343
Late-arriving aircraft	43.0%	41.5%	107,209
National Aviation System	18.1%	17.8%	45,037
Extreme weather	7.0%	6.0%	17,349
Security	0.1%	0.2%	204

249,142 delay minutes on 3,163 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 June 2024?

67.8% of 10,028 scheduled domestic departures left less than 15 minutes late, and 66.7% reached their destination on time. The national figures that month were 73.7% and 73.9%.

How does that compare with a year earlier?

June 2023 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 June 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.