Harry Reid International in January 2025

80.6%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 January 2025, reporting carriers scheduled 15,007 domestic departures from Harry Reid International (LAS). 80.6% left less than 15 minutes late and 83.9% reached their destination on time; 1.1% were cancelled.

Nationally that month, 79.3% of flights departed on time and 78.6% arrived on time, so LAS departures were 1.3 points above the national departure figure.

A year earlier, in January 2024, the airport had 14,942 departures with 75.9% leaving on time: a change of +4.7 points, with flights up 0%.

Flights arriving at LAS that month were on time 80.1% of the time (15,004 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 51%, air carrier 30% and national aviation system 14%.

On time 83.9%
Arrived 15+ minutes late 14.7%
Cancelled 1.1%
Diverted 0.2%

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

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

Measure	Jan 2025	Jan 2024	LAS, 12 months to Jul 2026	All reported flights, Jan 2025
Departed on time	80.6%	75.9%	73.8%	79.3%
Arrived on time	83.9%	76.3%	76.8%	78.6%
Cancelled	1.1%	2.5%	0.9%	3.0%
Average departure delay (late minutes only)	12.1 min	14.1 min	16.3 min	14.0 min
Scheduled departures a day	500	498	474	17,992
Scheduled departures	15,007	14,942	172,932	539,747

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
WN Southwest Airlines	6,761	45%	83.1%	-1.7 min	1.1%
NK Spirit Airlines	1,633	11%	87.4%	-8.5 min	1.6%
DL Delta Air Lines	1,374	9%	87.7%	-5.5 min	0.7%
UA United Airlines	1,288	9%	85.9%	-3.6 min	1.0%
AA American Airlines	1,183	8%	84.1%	2.5 min	2.3%
F9 Frontier Airlines	979	7%	84.3%	-2.6 min	1.2%
G4 Allegiant Air	575	4%	82.6%	5.6 min	0.7%
AS Alaska Airlines	438	3%	76.7%	8.4 min	0.0%
OO SkyWest Airlines	408	3%	70.3%	18.3 min	1.0%
B6 JetBlue Airways	242	2%	85.1%	-2.2 min	0.0%
HA Hawaiian Airlines	126	1%	88.9%	-3.4 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
LAS–LAX	Las Vegas to Los Angeles	745	83.5%	-1.0 min	0.3%
LAS–DEN	Las Vegas to Denver	613	83.4%	2.0 min	0.2%
LAS–SAN	Las Vegas to San Diego	586	76.6%	6.9 min	1.7%
LAS–PHX	Las Vegas to Phoenix	553	86.1%	-2.0 min	0.0%
LAS–SFO	Las Vegas to San Francisco	523	81.3%	0.1 min	0.0%
LAS–DFW	Las Vegas to Dallas/Fort Worth	500	79.6%	-0.9 min	5.4%
LAS–SEA	Las Vegas to Seattle	483	82.2%	3.2 min	0.0%
LAS–SMF	Las Vegas to Sacramento	421	87.4%	-1.2 min	0.5%
LAS–ATL	Las Vegas to Atlanta	404	84.2%	-6.1 min	3.2%
LAS–SJC	Las Vegas to San Jose	392	89.5%	-7.4 min	0.3%
LAS–ORD	Las Vegas to Chicago	390	84.6%	4.5 min	0.5%
LAS–OAK	Las Vegas to Oakland	377	85.1%	-5.3 min	0.5%

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), January 2025.

Delay causes

BTS cause category	Share of delay minutes	National, Jan 2025	Minutes
Air carrier	30.3%	36.2%	42,035
Late-arriving aircraft	51.1%	34.7%	71,015
National Aviation System	13.8%	19.9%	19,191
Extreme weather	4.7%	9.1%	6,535
Security	0.1%	0.2%	162

138,938 delay minutes on 2,210 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 January 2025?

80.6% of 15,007 scheduled domestic departures left less than 15 minutes late, and 83.9% reached their destination on time. The national figures that month were 79.3% and 78.6%.

How does that compare with a year earlier?

In January 2024, 75.9% of 14,942 departures left on time and 2.5% were cancelled, against 80.6% and 1.1% in January 2025.

Provenance

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