Southwest Airlines LAS to MDW on-time performance
Southwest Airlines nonstop flights from Las Vegas to Chicago · Aug 2025 – Jul 2026
On-time arrivals
76%
arrived < 15 min late
Cancelled
0.7%
16 flights
Avg arrival delay
12 min
46 min when late
Rank on route
#1 of 2
route average 76% on time
Key facts
- Southwest Airlines flights on LAS to MDW arrived on time 76% of the time in Aug 2025 – Jul 2026.
- 0.7% were cancelled, and 5% arrived an hour or more late.
- That ranks #1 of 2 airlines on this route, which averaged 76% on time overall.
- The largest source of delay minutes was late-arriving aircraft (45%).
On-time trend by month
Why this airline's flights were late
- Late-arriving aircraft45%
- Airline (crew, maintenance, cleaning, fueling)42%
- Air traffic control & airport congestion13%
- Extreme weather0%
- Security0%
Other airlines on LAS to MDW
- Allegiant Air50% on time · 74 min avg delay
Full LAS to MDW comparison →
Southwest Airlines on-time record across all routes →
2,298 Southwest Airlines flights tracked on this route; 16 cancelled, 16 diverted.
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. How we calculate this.