LAS to MKE flight delays
Las Vegas, NV (LAS) Milwaukee, WI (MKE) · 1,524 miles
1,070 flights · January 2025 – August 2026 · US Bureau of Transportation Statistics
74.98%
Arrived on time
Within 15 minutes of schedule
0.84%
Cancelled
Share of scheduled flights
49 min
When late, late by
Average across delayed arrivals
14 min
Delay per flight
Averaged over every flight flown
What the record says about this route
The season swings this route hard. In August it ran 27.8 points more punctual than in June — 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.
The route has been getting worse. The later months run 8.6 points less punctual than the earlier ones. A drift of that size is rarely weather; it is more often an airline adding frequencies faster than the airports can absorb them.
The two directions do not behave alike. MKE to LAS arrives on time 6.3 points more often than the outbound. Delay accumulates through the flying day, so whichever direction is scheduled later tends to carry the worse record — which is an argument for booking the morning departure if the choice exists.
Only Southwest Airlines flies this route in the published record, so there is no choice to weigh — the route's figures and the airline's are the same figures.
Which airline should you fly on this route?
Over January 2025 – August 2026, Southwest Airlines arrived on time most often on LAS to MKE. Flights ran closest to schedule in August and worst in June.
Every airline on LAS to MKE
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 | 1,004 | 74.1% | 0.6% | 48 min | C |
| Spirit Airlines | 60 | 89.66% | 3.33% | 108 min | — |
| Frontier Airlines | 6 | 80% | 16.67% | 18 min | — |
Month by month
Share of flights that arrived within 15 minutes of schedule, by month flown.
The return leg
MKE to LAS Milwaukee back to Las Vegas 81.27% on time COther routes from Las Vegas
Common questions
Are flights from Las Vegas to Milwaukee usually delayed?
74.98% of flights on the LAS to MKE route arrived within 15 minutes of schedule, so roughly 3 in every ten arrived late. That is about the same as the average route in this record.
Which airlines fly from Las Vegas to Milwaukee?
Only Southwest Airlines appears in the published record on this route, with 1,004 flights and 74.1% arriving on time.
How often are LAS to MKE flights cancelled?
0.84% of scheduled flights did not operate — about 8 in every thousand. That is in the normal range.
What is the best month to fly Las Vegas to Milwaukee?
August, when 86.3% of flights arrived on time. The worst was June at 58.5%.
When LAS to MKE flights are late, how late are they?
About 49 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 MKE 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 →