Harry Reid International in September 2024

79.5%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 September 2024, reporting carriers scheduled 15,672 domestic departures from Harry Reid International (LAS). 79.5% left less than 15 minutes late and 80.4% reached their destination on time; 0.3% were cancelled.

Nationally that month, 84.4% of flights departed on time and 83.9% arrived on time, so LAS departures were 4.9 points below the national departure figure.

A year earlier, in September 2023, the airport had 16,110 departures with 74.1% leaving on time: a change of +5.4 points, with flights down 3%.

Flights arriving at LAS that month were on time 80.3% of the time (15,663 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 42%, air carrier 32% and national aviation system 24%.

On time 80.4%
Arrived 15+ minutes late 19.1%
Cancelled 0.3%
Diverted 0.2%

Every scheduled departure from LAS in September 2024, judged by arrival at the destination.

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

Measure	Sep 2024	Sep 2023	LAS, 12 months to Jul 2026	All reported flights, Sep 2024
Departed on time	79.5%	74.1%	73.8%	84.4%
Arrived on time	80.4%	75.4%	76.8%	83.9%
Cancelled	0.3%	1.0%	0.9%	0.6%
Average departure delay (late minutes only)	12.9 min	16.5 min	16.3 min	10.6 min
Scheduled departures a day	522	537	474	19,421
Scheduled departures	15,672	16,110	172,932	582,622

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
WN Southwest Airlines	6,900	44%	79.8%	2.5 min	0.2%
NK Spirit Airlines	2,305	15%	79.7%	4.7 min	0.4%
DL Delta Air Lines	1,339	9%	82.4%	1.0 min	0.1%
F9 Frontier Airlines	1,215	8%	77.3%	5.4 min	0.7%
AA American Airlines	1,193	8%	83.8%	-0.5 min	0.3%
UA United Airlines	1,173	7%	86.1%	-1.6 min	0.3%
G4 Allegiant Air	561	4%	83.8%	-3.0 min	0.2%
AS Alaska Airlines	432	3%	69.4%	13.0 min	1.2%
B6 JetBlue Airways	274	2%	83.6%	0.9 min	0.0%
OO SkyWest Airlines	166	1%	70.5%	17.0 min	0.0%
HA Hawaiian Airlines	114	1%	75.4%	8.5 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
LAS–LAX	Las Vegas to Los Angeles	788	79.3%	4.7 min	0.0%
LAS–DEN	Las Vegas to Denver	633	84.0%	-1.6 min	0.0%
LAS–PHX	Las Vegas to Phoenix	593	83.6%	-2.1 min	0.5%
LAS–SEA	Las Vegas to Seattle	579	75.8%	6.3 min	0.9%
LAS–SAN	Las Vegas to San Diego	559	69.6%	12.2 min	0.2%
LAS–SFO	Las Vegas to San Francisco	538	73.0%	10.7 min	0.7%
LAS–DFW	Las Vegas to Dallas/Fort Worth	505	84.2%	-0.4 min	0.2%
LAS–SMF	Las Vegas to Sacramento	478	79.3%	4.1 min	0.2%
LAS–ORD	Las Vegas to Chicago	456	82.9%	-0.8 min	0.0%
LAS–SJC	Las Vegas to San Jose	404	81.9%	-0.4 min	0.0%
LAS–ATL	Las Vegas to Atlanta	403	80.4%	5.5 min	0.7%
LAS–OAK	Las Vegas to Oakland	402	80.1%	3.6 min	0.2%

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), September 2024.

Delay causes

BTS cause category	Share of delay minutes	National, Sep 2024	Minutes
Air carrier	31.9%	38.6%	55,066
Late-arriving aircraft	42.1%	38.4%	72,575
National Aviation System	23.9%	18.2%	41,318
Extreme weather	2.0%	4.8%	3,409
Security	0.1%	0.1%	159

172,527 delay minutes on 2,991 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 LAS on time in September 2024?

79.5% of 15,672 scheduled domestic departures left less than 15 minutes late, and 80.4% reached their destination on time. The national figures that month were 84.4% and 83.9%.

How does that compare with a year earlier?

In September 2023, 74.1% of 16,110 departures left on time and 1.0% were cancelled, against 79.5% and 0.3% in September 2024.

Provenance

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