Southwest Airlines ORD to LAS on-time performance
Southwest Airlines nonstop flights from Chicago to Las Vegas · Aug 2025 – Jul 2026
On-time arrivals
73%
arrived < 15 min late
Cancelled
0.8%
5 flights
Avg arrival delay
20 min
69 min when late
Rank on route
#3 of 5
route average 74% on time
Key facts
- Southwest Airlines flights on ORD to LAS arrived on time 73% of the time in Aug 2025 – Jul 2026.
- 0.8% were cancelled, and 10% arrived an hour or more late.
- That ranks #3 of 5 airlines on this route, which averaged 74% 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)29%
- Air traffic control & airport congestion23%
- Security2%
- Extreme weather1%
Other airlines on ORD to LAS
- United Airlines80% on time · 14 min avg delay
- American Airlines67% on time · 25 min avg delay
- Frontier Airlines59% on time · 64 min avg delay
- Spirit Airlines83% on time · 13 min avg delay
Full ORD to LAS comparison →
Southwest Airlines on-time record across all routes →
609 Southwest Airlines flights tracked on this route; 5 cancelled, 2 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.