Harry Reid International in March 2025

79.0%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 March 2025, reporting carriers scheduled 16,443 domestic departures from Harry Reid International (LAS). 79.0% left less than 15 minutes late and 80.3% reached their destination on time; 0.6% were cancelled.

Nationally that month, 79.9% of flights departed on time and 79.3% arrived on time, so LAS departures were 0.9 points below the national departure figure.

A year earlier, in March 2024, the airport had 16,062 departures with 72.2% leaving on time: a change of +6.8 points, with flights up 2%.

Flights arriving at LAS that month were on time 80.2% of the time (16,447 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 44%, air carrier 36% and national aviation system 19%.

On time 80.3%
Arrived 15+ minutes late 18.8%
Cancelled 0.6%
Diverted 0.3%

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

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

Measure	Mar 2025	Mar 2024	LAS, 12 months to Jul 2026	All reported flights, Mar 2025
Departed on time	79.0%	72.2%	73.8%	79.9%
Arrived on time	80.3%	72.5%	76.8%	79.3%
Cancelled	0.6%	0.9%	0.9%	1.2%
Average departure delay (late minutes only)	13.1 min	19.8 min	16.3 min	14.9 min
Scheduled departures a day	548	535	474	20,029
Scheduled departures	16,443	16,062	172,932	600,872

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
WN Southwest Airlines	7,659	47%	78.5%	3.7 min	0.6%
NK Spirit Airlines	1,486	9%	88.1%	-4.3 min	0.5%
DL Delta Air Lines	1,418	9%	82.6%	2.0 min	0.4%
UA United Airlines	1,382	8%	83.5%	0.4 min	0.1%
AA American Airlines	1,343	8%	79.5%	7.7 min	1.2%
F9 Frontier Airlines	1,066	6%	76.6%	5.0 min	1.2%
G4 Allegiant Air	672	4%	87.6%	-3.5 min	0.1%
OO SkyWest Airlines	491	3%	70.3%	12.3 min	0.4%
AS Alaska Airlines	478	3%	79.5%	5.3 min	0.6%
B6 JetBlue Airways	313	2%	81.2%	2.0 min	0.6%
HA Hawaiian Airlines	135	1%	76.3%	7.2 min	1.5%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
LAS–LAX	Las Vegas to Los Angeles	812	79.4%	6.3 min	0.0%
LAS–DEN	Las Vegas to Denver	715	82.5%	0.6 min	0.6%
LAS–PHX	Las Vegas to Phoenix	634	80.8%	4.6 min	1.1%
LAS–SAN	Las Vegas to San Diego	631	67.7%	12.4 min	1.1%
LAS–SFO	Las Vegas to San Francisco	535	72.3%	9.1 min	0.4%
LAS–DFW	Las Vegas to Dallas/Fort Worth	524	79.6%	9.7 min	2.5%
LAS–SEA	Las Vegas to Seattle	504	84.7%	-1.2 min	0.2%
LAS–ORD	Las Vegas to Chicago	464	84.3%	2.7 min	0.4%
LAS–SMF	Las Vegas to Sacramento	461	83.7%	-1.5 min	0.2%
LAS–ATL	Las Vegas to Atlanta	419	85.4%	-2.3 min	1.0%
LAS–SNA	Las Vegas to Santa Ana	383	81.7%	0.3 min	0.0%
LAS–BUR	Las Vegas to Burbank	360	78.3%	1.3 min	2.5%

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), March 2025.

Delay causes

BTS cause category	Share of delay minutes	National, Mar 2025	Minutes
Air carrier	36.1%	33.0%	65,410
Late-arriving aircraft	43.8%	39.2%	79,374
National Aviation System	18.8%	21.9%	34,048
Extreme weather	1.3%	5.9%	2,414
Security	0.1%	0.1%	100

181,346 delay minutes on 3,091 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 March 2025?

79.0% of 16,443 scheduled domestic departures left less than 15 minutes late, and 80.3% reached their destination on time. The national figures that month were 79.9% and 79.3%.

How does that compare with a year earlier?

In March 2024, 72.2% of 16,062 departures left on time and 0.9% were cancelled, against 79.0% and 0.6% in March 2025.

Provenance

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