LAS to DSM flight delays
Las Vegas, NV (LAS) Des Moines, IA (DSM) · 1,216 miles
594 flights · January 2025 – August 2026 · US Bureau of Transportation Statistics
79.25%
Arrived on time
Within 15 minutes of schedule
0.34%
Cancelled
Share of scheduled flights
57 min
When late, late by
Average across delayed arrivals
13 min
Delay per flight
Averaged over every flight flown
What the record says about this route
The season swings this route hard. In June it ran 23 points more punctual than in September — a difference bigger than the one between the best and worst airlines on most routes. If the date is flexible, it is worth more than the carrier.
This is a thin route — 594 flights across the whole period. On a route this infrequent a cancellation is far more costly than the rate suggests, because the next departure may not be the same day.
The 2 airlines here are separated by under 2 points — close enough to call a tie. Choose on price and departure time.
The Las Vegas to Des Moines route sits close to the middle of the record — neither notably punctual nor notably late.
Which airline should you fly on this route?
Over January 2025 – August 2026, Allegiant Air arrived on time most often on LAS to DSM. Southwest Airlines was late most often. Flights ran closest to schedule in June and worst in September.
Every airline on LAS to DSM
Ranked by how many flights each one operated. A carrier with fewer than 100 flights in the period is listed but not graded.
| Airline | Flights | On time | Cancelled | Avg delay | Grade |
|---|---|---|---|---|---|
| Southwest Airlines | 365 | 78.73% | 0.55% | 38 min | C |
| Allegiant Air | 229 | 80.09% | 0% | 90 min | B |
Month by month
Share of flights that arrived within 15 minutes of schedule, by month flown.
The return leg
DSM to LAS Des Moines back to Las Vegas 79.53% on time COther routes from Las Vegas
Common questions
Are flights from Las Vegas to Des Moines usually delayed?
79.25% of flights on the LAS to DSM route arrived within 15 minutes of schedule, so roughly 2 in every ten arrived late. That is about the same as the average route in this record.
Which airline is most on time from Las Vegas to Des Moines?
Allegiant Air, at 80.09% on time across 229 flights. The least punctual on the route was Southwest Airlines at 78.73%.
How often are LAS to DSM flights cancelled?
0.34% of scheduled flights did not operate — about 3 in every thousand. That is in the normal range.
What is the best month to fly Las Vegas to Des Moines?
June, when 88.2% of flights arrived on time. The worst was September at 65.2%.
When LAS to DSM flights are late, how late are they?
About 57 minutes on average across the flights that arrived more than 15 minutes behind schedule.
What these figures do and do not tell you
Everything on this page is counted from the flights that actually operated on LAS to DSM during January 2025 – August 2026, as reported by the airlines to the US Bureau of Transportation Statistics. "On time" is the federal definition: arriving at the gate within 15 minutes of the scheduled time.
A route's record is a description of the past, not a forecast. Weather, air traffic control and the aircraft's earlier flights that day drive most delays, and none of them are predictable from a historical rate. What the record does tell you is whether this route runs late more often than others, and which carrier on it has the better history — which is the part you can actually act on when you book.
Cancellations are counted separately from delays because they are a different problem for a traveller: a late flight still gets you there. How the grade is calculated →