BTS DATA COMPLETE THROUGH JUNE 2026HISTORICAL ODDS · NOT LIVE FLIGHT STATUS
DelayOddsKnow the route before you book
DSM→LAS

Des Moines, IA (DSM) to Las Vegas, NV (LAS) flight delay odds

79.1% of 594 official scheduled DSM-to-LAS flights arrived on time; 14.3% arrived at least 30 minutes late and 0.3% were cancelled during July 2025–June 2026.

Source: U.S. Bureau of Transportation Statistics · Reporting window: July 2025–June 2026 · Updated September 16, 2026

HISTORICAL ROUTE SIGNALGenerally reliable
79.1%arrived on time
14.3%30+ min late
0.3%cancelled
594scheduled flights
Based on July 2025–June 2026; on time means arrival less than 15 minutes late.
60+ minutes late7.6%all scheduled flights
120+ minutes late3.4%all scheduled flights
Diverted0.2%did not reach as scheduled
Average arrival+9.9 mincompleted flights

Which departure time was most reliable for DSM to LAS?

Among qualifying DSM-to-LAS departure window results, Late morning had the highest on-time rate: 88.3% of 111 flights. Early morning was lowest at 79.7% across 59 flights.

Departure windowFlightsOn time30+ minCancelled
Early morning5979.7%18.6%0.0%
Late morning11188.3%9.0%0.9%
Afternoon35881.0%11.7%0.0%

Which weekday was most reliable for DSM to LAS?

Among qualifying DSM-to-LAS weekday results, Wednesday had the highest on-time rate: 89.0% of 73 flights. Sunday was lowest at 73.1% across 104 flights.

DayFlightsOn time30+ minCancelled
Monday10479.8%15.4%0.0%
Tuesday5481.5%13.0%0.0%
Wednesday7389.0%6.8%0.0%
Thursday10175.2%15.8%1.0%
Friday10478.8%12.5%0.0%
Saturday5481.5%11.1%0.0%
Sunday10473.1%21.2%1.0%

Which airline was most reliable for DSM to LAS?

Among qualifying DSM-to-LAS airline results, Southwest Airlines had the highest on-time rate: 83.0% of 365 flights. Allegiant Air was lowest at 72.9% across 229 flights.

AirlineFlightsOn time30+ minCancelled
Southwest Airlines36583.0%10.1%0.5%
Allegiant Air22972.9%21.0%0.0%

Which month was most reliable for DSM to LAS?

Among qualifying DSM-to-LAS month results, October 2025 had the highest on-time rate: 92.5% of 53 flights. December 2025 was lowest at 66.0% across 50 flights.

MonthFlightsOn time30+ minCancelled
July 20255369.8%22.6%1.9%
August 20255088.0%6.0%0.0%
September 20254783.0%12.8%0.0%
October 20255392.5%3.8%0.0%
November 20254787.2%10.6%0.0%
December 20255066.0%26.0%0.0%
January 20264879.2%16.7%0.0%
February 20264484.1%9.1%0.0%
March 20265381.1%13.2%1.9%
April 20264774.5%21.3%0.0%
May 20265174.5%15.7%0.0%
June 20265170.6%13.7%0.0%

What drove DSM to LAS delay minutes?

Airline was the largest recorded DSM-to-LAS delay category, accounting for 29.5% of 10,831 BTS-attributed delay minutes during July 2025–June 2026.

Airline29.5%
Late aircraft26.9%
National airspace24.0%
Weather18.6%
Security1.1%
This is historical evidence, not a forecast.

Weather, schedules and operations change. For a trip you have already booked, use the airline or airport for live status.