FlightRecord

Harry Reid International Airport (LAS): Delays & On-Time Performance

Data through May 2026

Harry Reid International Airport (LAS) is a tale of two seasons: departures ran 84% on-time in November 2024 but sank to 65% in July 2024. Across the year it averages 77% against a national 78%, over roughly 483 departures a day to 135 destinations.

Departures on-time
77%
left <15 min late
Avg dep delay
15 min
Arrivals on-time
79%
Cancelled
0.8%
Destinations
135
nonstop
Airlines
12

Monthly on-time trend

Monthly departure on-time percentage at LAS50%75%100%June 2024: 71% on-time (15,699 flights)71Jun 2024July 2024: 65% on-time (16,285 flights)65August 2024: 75% on-time (16,089 flights)75September 2024: 80% on-time (15,672 flights)80Sep 2024October 2024: 83% on-time (17,195 flights)83November 2024: 84% on-time (15,733 flights)84December 2024: 80% on-time (15,581 flights)80Dec 2024January 2025: 82% on-time (15,007 flights)82February 2025: 80% on-time (14,178 flights)80March 2025: 80% on-time (16,443 flights)80Mar 2025April 2025: 79% on-time (16,034 flights)79May 2025: 77% on-time (16,720 flights)77June 2025: 73% on-time (15,782 flights)73Jun 2025July 2025: 71% on-time (15,733 flights)71August 2025: 77% on-time (14,920 flights)77September 2025: 78% on-time (14,399 flights)78Sep 2025October 2025: 74% on-time (15,597 flights)74November 2025: 78% on-time (14,443 flights)78December 2025: 75% on-time (14,547 flights)75Dec 2025January 2026: 80% on-time (13,695 flights)80February 2026: 80% on-time (12,886 flights)80March 2026: 76% on-time (15,169 flights)76Mar 2026April 2026: 74% on-time (14,672 flights)74May 2026: 70% on-time (14,585 flights)70

Best time of day to depart from LAS

On-time percentage by scheduled departure hour at LAS5 a.m.: 95% on-time (7,380 flights)56 a.m.: 94% on-time (25,390 flights)67 a.m.: 90% on-time (25,785 flights)78 a.m.: 87% on-time (25,473 flights)89 a.m.: 84% on-time (26,109 flights)910 a.m.: 82% on-time (23,469 flights)1011 a.m.: 79% on-time (21,407 flights)1112 p.m.: 75% on-time (21,905 flights)121 p.m.: 74% on-time (20,690 flights)132 p.m.: 69% on-time (19,822 flights)143 p.m.: 68% on-time (20,072 flights)154 p.m.: 67% on-time (18,436 flights)165 p.m.: 66% on-time (20,741 flights)176 p.m.: 64% on-time (18,060 flights)187 p.m.: 66% on-time (16,019 flights)198 p.m.: 65% on-time (12,108 flights)209 p.m.: 64% on-time (11,889 flights)2110 p.m.: 72% on-time (12,179 flights)2211 p.m.: 78% on-time (14,068 flights)23scheduled departure hour

Busiest routes from LAS

RouteFlights/12moOn-timeAvg delay
LAS → LAX8,42479%14 min
LAS → DEN7,06078%15 min
LAS → SAN6,13168%20 min
LAS → PHX6,06080%14 min
LAS → SFO6,04469%19 min
LAS → SEA5,69980%13 min
LAS → ORD5,36879%17 min
LAS → DFW5,24279%19 min

Most reliable routes

  1. LAS → FAR93%
  2. LAS → PIA91%
  3. LAS → SGF90%
  4. LAS → GTF90%
  5. LAS → MLI90%

Most delay-prone routes

  1. LAS → ANC61%
  2. LAS → SBP68%
  3. LAS → SAN68%
  4. LAS → SFO69%
  5. LAS → FNT73%

Airline performance at LAS

AirlineOn-time departuresAvg delayFlights
United Airlines85%12 min29,924
Allegiant Air84%13 min14,690
Delta Air Lines84%13 min32,430
Spirit Airlines81%14 min34,123
SkyWest Airlines80%16 min7,679
American Airlines80%20 min28,835
Alaska Airlines78%14 min12,126
Frontier Airlines77%18 min25,007
JetBlue Airways77%20 min7,095
Hawaiian Airlines76%22 min2,429
Southwest Airlines72%15 min172,690

Frequently asked questions

How often are flights delayed at LAS?
23% of departures from Harry Reid International Airport left 15+ minutes late between 2024-06 and 2026-05, with an average departure delay of 15 minutes. The national on-time average over the same period was 78%.
What is the best time of day to depart from LAS?
Flights scheduled around 5 a.m. depart on time 95% of the time at LAS, versus 64% around 6 p.m.. Booking before noon is the usual rule of thumb here.
What is the worst month for delays at LAS?
In this dataset, July 2024 was the weakest month at LAS, with 65% of departures on time.
How often are flights cancelled at LAS?
0.8% of scheduled departures from LAS were cancelled in this period, compared with a national rate of 1.6%.

Popular route pages from this airport

Based on 367,064 flights, 2024-06–2026-05. Source: US DOT Bureau of Transportation Statistics. Updated 2026-07-01.