George Bush Intercontinental/Houston in April 2026

80.8%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 April 2026, reporting carriers scheduled 10,022 domestic departures from George Bush Intercontinental/Houston (IAH). 80.8% left less than 15 minutes late and 79.8% reached their destination on time; 0.6% were cancelled.

Nationally that month, 79.1% of flights departed on time and 78.9% arrived on time, so IAH departures were 1.7 points above the national departure figure.

A year earlier, in April 2025, the airport had 9,510 departures with 80.0% leaving on time: a change of +0.8 points, with flights up 5%.

Flights arriving at IAH that month were on time 81.3% of the time (10,013 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 39%, air carrier 31% and national aviation system 24%.

On time 79.8%
Arrived 15+ minutes late 19.4%
Cancelled 0.6%
Diverted 0.2%

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

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

Measure	Apr 2026	Apr 2025	IAH, 12 months to Jul 2026	All reported flights, Apr 2026
Departed on time	80.8%	80.0%	78.1%	79.1%
Arrived on time	79.8%	80.0%	77.6%	78.9%
Cancelled	0.6%	0.5%	1.1%	0.9%
Average departure delay (late minutes only)	14.5 min	16.7 min	17.2 min	14.5 min
Scheduled departures a day	334	317	326	19,931
Scheduled departures	10,022	9,510	119,020	597,919

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
UA United Airlines	6,218	62%	82.8%	0.8 min	0.2%
OO SkyWest Airlines	1,228	12%	74.9%	15.1 min	0.5%
DL Delta Air Lines	718	7%	83.6%	1.8 min	0.6%
AA American Airlines	655	7%	78.2%	11.2 min	1.2%
F9 Frontier Airlines	427	4%	67.0%	22.6 min	1.4%
NK Spirit Airlines	397	4%	64.2%	15.7 min	4.8%
MQ Envoy Air	126	1%	69.0%	13.5 min	1.6%
AS Alaska Airlines	90	1%	88.9%	-6.6 min	1.1%
OH PSA Airlines	69	1%	75.4%	11.8 min	0.0%
YX Republic Airline	64	1%	60.9%	14.3 min	1.6%
B6 JetBlue Airways	30	0%	70.0%	12.2 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
IAH–ORD	Houston to Chicago	525	69.9%	14.8 min	2.9%
IAH–DFW	Houston to Dallas/Fort Worth	524	74.0%	12.8 min	0.6%
IAH–ATL	Houston to Atlanta	466	79.0%	5.1 min	0.4%
IAH–LAX	Houston to Los Angeles	437	81.9%	3.4 min	0.5%
IAH–LGA	Houston to New York	364	77.7%	5.9 min	1.4%
IAH–DEN	Houston to Denver	361	87.8%	-5.5 min	0.0%
IAH–MCO	Houston to Orlando	312	86.9%	1.4 min	0.3%
IAH–MIA	Houston to Miami	310	79.4%	10.9 min	1.0%
IAH–SFO	Houston to San Francisco	300	74.0%	10.5 min	0.3%
IAH–EWR	Houston to Newark	297	81.8%	-0.2 min	1.0%
IAH–LAS	Houston to Las Vegas	295	77.3%	9.5 min	1.4%
IAH–DCA	Houston to Washington	283	79.5%	3.8 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), April 2026.

Delay causes

BTS cause category	Share of delay minutes	National, Apr 2026	Minutes
Air carrier	30.5%	33.5%	40,969
Late-arriving aircraft	39.1%	40.4%	52,593
National Aviation System	24.2%	21.0%	32,456
Extreme weather	6.2%	5.0%	8,318
Security	0.0%	0.1%	30

134,366 delay minutes on 1,947 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 April 2026?

80.8% of 10,022 scheduled domestic departures left less than 15 minutes late, and 79.8% 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, 80.0% of 9,510 departures left on time and 0.5% were cancelled, against 80.8% and 0.6% 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 IAH · methodology · corrections.