Harry Reid International in April 2026

73.9%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 April 2026, reporting carriers scheduled 14,672 domestic departures from Harry Reid International (LAS). 73.9% left less than 15 minutes late and 78.3% reached their destination on time; 0.4% were cancelled.

Nationally that month, 79.1% of flights departed on time and 78.9% arrived on time, so LAS departures were 5.2 points below the national departure figure.

A year earlier, in April 2025, the airport had 16,034 departures with 78.7% leaving on time: a change of −4.8 points, with flights down 8%.

Flights arriving at LAS that month were on time 76.9% of the time (14,680 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 50%, air carrier 32% and national aviation system 17%.

On time 78.3%
Arrived 15+ minutes late 21.1%
Cancelled 0.4%
Diverted 0.2%

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

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

Measure	Apr 2026	Apr 2025	LAS, 12 months to Jul 2026	All reported flights, Apr 2026
Departed on time	73.9%	78.7%	73.8%	79.1%
Arrived on time	78.3%	80.6%	76.8%	78.9%
Cancelled	0.4%	0.3%	0.9%	0.9%
Average departure delay (late minutes only)	14.6 min	12.9 min	16.3 min	14.5 min
Scheduled departures a day	489	535	474	19,931
Scheduled departures	14,672	16,034	172,932	597,919

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
WN Southwest Airlines	7,367	50%	74.3%	5.6 min	0.1%
DL Delta Air Lines	1,399	10%	89.1%	-4.5 min	0.4%
UA United Airlines	1,291	9%	82.3%	-2.5 min	0.3%
AA American Airlines	1,289	9%	85.2%	-6.1 min	1.0%
F9 Frontier Airlines	1,115	8%	76.1%	6.5 min	1.3%
AS Alaska Airlines	691	5%	76.0%	6.5 min	0.3%
G4 Allegiant Air	537	4%	81.2%	3.5 min	0.0%
NK Spirit Airlines	412	3%	80.8%	4.9 min	2.7%
B6 JetBlue Airways	396	3%	78.8%	4.1 min	0.0%
OO SkyWest Airlines	175	1%	85.7%	3.2 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
LAS–LAX	Las Vegas to Los Angeles	671	80.5%	0.4 min	0.6%
LAS–DEN	Las Vegas to Denver	645	83.9%	-3.4 min	0.6%
LAS–PHX	Las Vegas to Phoenix	529	80.7%	1.3 min	0.4%
LAS–ORD	Las Vegas to Chicago	504	73.0%	6.0 min	1.6%
LAS–SFO	Las Vegas to San Francisco	504	52.2%	22.1 min	0.2%
LAS–SEA	Las Vegas to Seattle	475	83.6%	-0.8 min	0.4%
LAS–DFW	Las Vegas to Dallas/Fort Worth	467	83.1%	-1.9 min	1.5%
LAS–ATL	Las Vegas to Atlanta	422	88.2%	0.4 min	0.2%
LAS–SAN	Las Vegas to San Diego	399	64.9%	12.1 min	0.0%
LAS–SNA	Las Vegas to Santa Ana	365	82.5%	1.7 min	0.5%
LAS–BUR	Las Vegas to Burbank	349	79.7%	1.3 min	0.6%
LAS–RNO	Las Vegas to Reno	349	81.4%	2.4 min	0.0%

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), April 2026.

Delay causes

BTS cause category	Share of delay minutes	National, Apr 2026	Minutes
Air carrier	32.0%	33.5%	52,919
Late-arriving aircraft	49.8%	40.4%	82,365
National Aviation System	17.1%	21.0%	28,222
Extreme weather	1.1%	5.0%	1,878
Security	0.0%	0.1%	47

165,431 delay minutes on 3,097 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 April 2026?

73.9% of 14,672 scheduled domestic departures left less than 15 minutes late, and 78.3% reached their destination on time. The national figures that month were 79.1% and 78.9%.

How does that compare with a year earlier?

In April 2025, 78.7% of 16,034 departures left on time and 0.3% were cancelled, against 73.9% and 0.4% in April 2026.

Provenance

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