Harry Reid International in July 2025

69.9%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 July 2025, reporting carriers scheduled 15,733 domestic departures from Harry Reid International (LAS). 69.9% left less than 15 minutes late and 71.7% reached their destination on time; 1.1% were cancelled.

Nationally that month, 69.7% of flights departed on time and 69.0% arrived on time, so LAS departures were level with the national departure figure.

A year earlier, in July 2024, the airport had 16,285 departures with 62.9% leaving on time: a change of +7.0 points, with flights down 3%.

Flights arriving at LAS that month were on time 73.7% of the time (15,724 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 43%, air carrier 35% and national aviation system 19%.

On time 71.7%
Arrived 15+ minutes late 26.6%
Cancelled 1.1%
Diverted 0.5%

Every scheduled departure from LAS in July 2025, judged by arrival at the destination.

July 2025 against a year earlier, the airport's year and the nation

Measure	Jul 2025	Jul 2024	LAS, 12 months to Jul 2026	All reported flights, Jul 2025
Departed on time	69.9%	62.9%	73.8%	69.7%
Arrived on time	71.7%	64.4%	76.8%	69.0%
Cancelled	1.1%	2.6%	0.9%	2.5%
Average departure delay (late minutes only)	20.6 min	26.1 min	16.3 min	24.3 min
Scheduled departures a day	524	543	474	21,048
Scheduled departures	15,733	16,285	172,932	631,428

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
WN Southwest Airlines	7,466	47%	68.5%	14.5 min	0.7%
NK Spirit Airlines	1,476	9%	77.5%	7.1 min	1.1%
DL Delta Air Lines	1,343	9%	79.2%	4.8 min	0.7%
UA United Airlines	1,242	8%	73.4%	9.8 min	1.3%
AA American Airlines	1,195	8%	70.9%	16.0 min	2.8%
F9 Frontier Airlines	997	6%	68.2%	17.1 min	2.1%
G4 Allegiant Air	696	4%	80.2%	4.9 min	0.3%
OO SkyWest Airlines	476	3%	78.6%	11.6 min	1.1%
AS Alaska Airlines	468	3%	74.4%	7.6 min	1.9%
B6 JetBlue Airways	244	2%	66.8%	11.5 min	4.1%
HA Hawaiian Airlines	126	1%	61.1%	19.6 min	1.6%
MQ Envoy Air	4	0%	100.0%	-15.7 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
LAS–LAX	Las Vegas to Los Angeles	742	73.7%	9.0 min	0.4%
LAS–SAN	Las Vegas to San Diego	646	69.3%	14.0 min	2.0%
LAS–DEN	Las Vegas to Denver	560	62.3%	23.4 min	1.6%
LAS–SEA	Las Vegas to Seattle	521	79.8%	4.2 min	1.0%
LAS–PHX	Las Vegas to Phoenix	495	73.7%	11.7 min	0.8%
LAS–SFO	Las Vegas to San Francisco	494	64.2%	15.2 min	1.2%
LAS–ORD	Las Vegas to Chicago	479	69.5%	11.6 min	1.7%
LAS–SMF	Las Vegas to Sacramento	452	72.6%	14.9 min	1.3%
LAS–DFW	Las Vegas to Dallas/Fort Worth	435	66.0%	26.8 min	3.7%
LAS–ATL	Las Vegas to Atlanta	416	75.2%	9.4 min	1.2%
LAS–SNA	Las Vegas to Santa Ana	415	79.0%	6.9 min	1.2%
LAS–SJC	Las Vegas to San Jose	380	73.9%	14.6 min	1.3%

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), July 2025.

Delay causes

BTS cause category	Share of delay minutes	National, Jul 2025	Minutes
Air carrier	34.6%	31.1%	97,229
Late-arriving aircraft	43.1%	40.8%	121,179
National Aviation System	19.0%	20.7%	53,361
Extreme weather	3.2%	7.3%	9,048
Security	0.1%	0.1%	323

281,140 delay minutes on 4,185 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 July 2025?

69.9% of 15,733 scheduled domestic departures left less than 15 minutes late, and 71.7% reached their destination on time. The national figures that month were 69.7% and 69.0%.

How does that compare with a year earlier?

In July 2024, 62.9% of 16,285 departures left on time and 2.6% were cancelled, against 69.9% and 1.1% in July 2025.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for July 2025; 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.