Airport month record

LASOCT

Harry Reid International in October 2025

Departures: 15,597
Month: October 2025
National, same month: 79.7%
Carriers: 11

Historical statistics for October 2025, not live status or a forecast for this year’s October. For today’s conditions at LAS, see live FAA status.

LAS in October lands a B+, 3 points worse than the national rate of 79.7%. Roughly one flight in four arrives 15 minutes late or worse, and those flights are late by about an hour on average. That is a workable record, not a spotless one. That rests on 15,597 flights, of which Spirit Airlines flew 1,061 at 90.3% on time.

Spirit Airlines is the most reliable of the nine carriers covered here at 90.3% on time across 1,061 flights.

On time

77.1%

Arrivals under 15 minutes late, of 15,529 completed departures

Avg delay

62 min

Across delayed arrivals only, not all flights

Cancelled

0.31%

Nationally in October: 0.53%

Whole year

77.9%

LAS across all twelve months

These figures cover 15,597 departures from Harry Reid International in October 2025. On time means an arrival less than 15 minutes after the scheduled gate time, the DOT's threshold, and the national comparison uses every US departure in the same month rather than the whole year.

Against the year

October next to LAS's other months

Against LAS's own year, October ran level with the twelve-month rate of 77.9%, which makes it number nine of twelve months, best first. Cancellations were unusually low for LAS in October, at 0.31% against 0.87% across the year. Either side of it, September ran 78.8% on time and November 79.5%, so a trip moved by a few weeks would have landed in a better stretch.

LAS month by month
Month	Flights	On time	Avg delay	Cancelled	Grade
July 2025	15,733	72.9%	67 min	1.13%	C
August 2025	14,920	79.6%	59 min	0.50%	B+
September 2025	14,399	78.8%	66 min	0.53%	B+
October 2025 (this page)	15,597	77.1%	62 min	0.31%	B+
November 2025	14,443	79.5%	59 min	1.73%	B
December 2025	14,547	79.9%	59 min	0.60%	B+
January 2026	13,695	83.1%	65 min	1.86%	B
February 2026	12,886	83.1%	58 min	0.88%	B+
March 2026	15,169	78.3%	60 min	1.15%	B
April 2026	14,672	78.8%	54 min	0.40%	B+
May 2026	14,585	74.1%	60 min	0.67%	C+
June 2026	13,704	70.7%	61 min	0.77%	C+

Departure window

The best time of day to leave LAS in October

Departure time matters more here than the choice of carrier. The gap between the best and worst window is 24 points, against 18 points between the best and worst carrier. Each bar is the on-time rate for flights scheduled inside that window.

5am–8am2,205 flights91.1%
8am–11am3,541 flights83.1%
11am–2pm2,589 flights75.6%
2pm–5pm2,573 flights66.9%
5pm–8pm2,279 flights67.4%
8pm–5am2,410 flights77.1%

Scale runs 60% to 95%. Rows with fewer than 30 flights show a dash.

Book the early departure. Flights leaving between 5am–8am arrive on time 91.1% of the time, against 66.9% for the afternoon window. That is 24 points of difference for no extra money, and it comes from the same aircraft having had no earlier flight to fall behind on. The 8am–11am window is the busiest, with 3,541 flights scheduled in it.

Across the week, Saturday is the strongest day at 86.0% on time and Friday the weakest at 68.8%. 17 points is a smaller lever than departure hour, but it is free.

Carrier by carrier

Which airlines ran best at LAS in October

The choice of carrier is not cosmetic here. Spirit Airlines arrives on time 90.3% of the time; Southwest Airlines manages 71.9%. Sample sizes sit next to every figure, because a two-point gap across 7,581 flights means less than a ten-point one.

Carriers at LAS in October 2025
Airline	Flights	On time	Avg delay	Cancelled	Grade
Southwest Airlines	7,581	71.9%	52 min	0.11%	C+
Delta Air Lines	1,359	87.0%	88 min	0.44%	A+
United Airlines	1,325	79.4%	61 min	0.08%	B+
American Airlines	1,297	82.9%	83 min	0.46%	B+
Spirit Airlines	1,061	90.3%	77 min	0.38%	A+
Frontier Airlines	1,002	79.3%	81 min	0.30%	B+
Allegiant Air	652	81.6%	79 min	0.00%	B+
Alaska Airlines	495	73.0%	62 min	3.43%	C−
SkyWest Airlines	367	82.1%	68 min	0.82%	B+
JetBlue Airwaysthin sample	301	72.0%	83 min	0.33%	C+
Hawaiian Airlinesthin sample	157	65.0%	99 min	0.00%	C+

Alaska Airlines cancels 3.4% of what it schedules here, the highest in the table. A cancelled flight never appears in an on-time rate, so read that column alongside the punctuality one rather than after it.

Route by route

Busiest routes out of LAS in October

Routes from LAS in October 2025
Route	Flights	On time	Avg delay	Cancelled	Grade
LAS to LAX · Los Angeles	685	77.5%	61 min	0.00%	B+
LAS to DEN · Denver	655	78.9%	65 min	0.00%	B+
LAS to PHX · Phoenix	542	75.6%	76 min	0.18%	B+
LAS to SAN · San Diego	541	64.0%	62 min	0.74%	D+
LAS to SFO · San Francisco	521	58.4%	53 min	0.77%	D+
LAS to SEA · Seattle	485	77.8%	79 min	2.47%	B
LAS to ORD · Chicago	482	78.0%	67 min	0.00%	B+
LAS to DFW · Dallas-Fort Worth	479	81.1%	79 min	1.04%	B
LAS to ATL · Atlanta	413	85.7%	57 min	0.24%	A+
LAS to SMF · Sacramento	381	74.8%	60 min	0.00%	C+
LAS to BUR · Burbankthin sample	363	72.7%	56 min	1.10%	C
LAS to SNA · Santa Anathin sample	354	83.6%	75 min	0.28%	B+
LAS to JFK · New Yorkthin sample	344	85.5%	83 min	1.45%	A
LAS to RNO · Renothin sample	336	74.9%	52 min	0.00%	C+
LAS to SLC · Salt Lake Citythin sample	320	84.6%	83 min	0.31%	B+
LAS to SJC · San Josethin sample	315	76.8%	51 min	0.00%	B+
LAS to DTW · Detroitthin sample	308	89.5%	52 min	0.65%	A+
LAS to IAH · Houstonthin sample	292	88.2%	81 min	0.00%	A+
LAS to OAK · Oaklandthin sample	263	68.8%	52 min	0.00%	C+
LAS to DAL · Dallasthin sample	256	67.9%	59 min	0.78%	C+
LAS to AUS · Austinthin sample	251	72.0%	54 min	0.00%	C+
LAS to EWR · Newarkthin sample	250	75.5%	88 min	0.40%	B+
LAS to PDX · Portlandthin sample	250	73.3%	64 min	1.20%	C
LAS to ONT · Ontariothin sample	228	68.9%	48 min	0.00%	C+
LAS to BNA · Nashvillethin sample	222	78.8%	53 min	0.00%	B+

Delay causes

What held LAS up in October

One category carries most of the weight here. Late-arriving aircraft accounts for 44% of the 220,000 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.

Late-arriving aircraft
44%
Carrier
33%
National Airspace System
21%
Extreme weather
3%
Security
0%

44% of delay minutes trace back to a late-arriving aircraft, meaning the plane was already behind before it got here. That is a cascade, and cascades start small and grow through the day. Across 220,000 reported delay minutes here, that single category outweighs weather by 17 to one. It is the strongest argument for booking the first departure of the morning, when the aircraft has been sitting at the gate overnight with nothing to inherit. The split is drawn from 220,216 reported delay minutes.

Cancellations are rare at 0.31%, below the national 0.53% and low enough to earn the plus on the grade. Roughly one flight in 100 is called off; the risk here is arriving late, not not arriving.

6.8% of arrivals land an hour or more late, close to the national 6.3%. That is the figure that decides a connection, and it says a 60 to 75 minute layover is reasonable here while anything under 45 minutes is a bet. Most delays on this route last about an hour, which a normal layover absorbs.

What to do with this

Flying from LAS in October

For a October trip through LAS: expect 77.1% on time and 0.31% cancelled, going by October 2025. The 5am–8am window was the strongest part of the day.

Harry Reid International (LAS), the whole year
LAS in July72.9%
LAS in August79.6%
LAS in September78.8%
LAS in November79.5%
LAS in December79.9%
LAS in January83.1%
LAS in February83.1%
LAS in March78.3%
LAS in April78.8%
LAS in May74.1%
LAS in June70.7%

Source: US DOT Bureau of Transportation Statistics, on-time performance data, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.

Key figures