Harry Reid International in March 2026

74.9%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 March 2026, reporting carriers scheduled 15,169 domestic departures from Harry Reid International (LAS). 74.9% left less than 15 minutes late and 77.1% reached their destination on time; 1.2% were cancelled.

Nationally that month, 72.8% of flights departed on time and 73.2% arrived on time, so LAS departures were 2.1 points above the national departure figure.

A year earlier, in March 2025, the airport had 16,443 departures with 79.0% leaving on time: a change of −4.1 points, with flights down 8%.

Flights arriving at LAS that month were on time 79.7% of the time (15,159 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 41%, air carrier 40% and national aviation system 17%.

On time 77.1%
Arrived 15+ minutes late 21.4%
Cancelled 1.2%
Diverted 0.3%

Every scheduled departure from LAS in March 2026, judged by arrival at the destination.

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

Measure	Mar 2026	Mar 2025	LAS, 12 months to Jul 2026	All reported flights, Mar 2026
Departed on time	74.9%	79.0%	73.8%	72.8%
Arrived on time	77.1%	80.3%	76.8%	73.2%
Cancelled	1.2%	0.6%	0.9%	2.9%
Average departure delay (late minutes only)	15.5 min	13.1 min	16.3 min	20.3 min
Scheduled departures a day	506	548	474	20,403
Scheduled departures	15,169	16,443	172,932	612,102

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
WN Southwest Airlines	7,556	50%	73.4%	7.0 min	0.7%
DL Delta Air Lines	1,413	9%	84.7%	-0.2 min	2.1%
UA United Airlines	1,359	9%	82.2%	2.6 min	0.8%
AA American Airlines	1,221	8%	78.3%	11.3 min	1.4%
F9 Frontier Airlines	1,098	7%	79.9%	5.7 min	1.7%
AS Alaska Airlines	716	5%	82.7%	-0.6 min	1.4%
G4 Allegiant Air	606	4%	86.6%	0.3 min	0.3%
NK Spirit Airlines	514	3%	74.7%	15.3 min	4.7%
B6 JetBlue Airways	445	3%	69.2%	12.3 min	1.6%
OO SkyWest Airlines	241	2%	80.1%	1.8 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
LAS–LAX	Las Vegas to Los Angeles	736	81.4%	1.4 min	1.0%
LAS–DEN	Las Vegas to Denver	665	76.1%	7.3 min	0.9%
LAS–PHX	Las Vegas to Phoenix	539	75.3%	8.2 min	0.7%
LAS–ORD	Las Vegas to Chicago	489	67.5%	18.9 min	3.1%
LAS–SFO	Las Vegas to San Francisco	488	82.8%	-2.8 min	0.4%
LAS–SEA	Las Vegas to Seattle	478	84.7%	-0.1 min	2.5%
LAS–DFW	Las Vegas to Dallas/Fort Worth	465	82.2%	7.3 min	1.1%
LAS–SAN	Las Vegas to San Diego	459	68.2%	11.9 min	0.0%
LAS–ATL	Las Vegas to Atlanta	407	77.4%	9.0 min	2.0%
LAS–SNA	Las Vegas to Santa Ana	390	83.6%	-2.3 min	1.8%
LAS–RNO	Las Vegas to Reno	385	82.1%	1.1 min	0.8%
LAS–BUR	Las Vegas to Burbank	377	84.6%	-2.4 min	2.4%

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 2026.

Delay causes

BTS cause category	Share of delay minutes	National, Mar 2026	Minutes
Air carrier	39.9%	33.5%	78,311
Late-arriving aircraft	41.3%	39.3%	80,939
National Aviation System	16.9%	21.0%	33,177
Extreme weather	1.7%	5.9%	3,390
Security	0.1%	0.2%	271

196,088 delay minutes on 3,249 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 2026?

74.9% of 15,169 scheduled domestic departures left less than 15 minutes late, and 77.1% reached their destination on time. The national figures that month were 72.8% and 73.2%.

How does that compare with a year earlier?

In March 2025, 79.0% of 16,443 departures left on time and 0.6% were cancelled, against 74.9% and 1.2% in March 2026.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for March 2026; 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.