Southwest Airlines LAS to ORD on-time performance
Southwest Airlines nonstop flights from Las Vegas to Chicago · Aug 2025 – Jul 2026
On-time arrivals
68%
arrived < 15 min late
Cancelled
0.3%
2 flights
Avg arrival delay
20 min
59 min when late
Rank on route
#4 of 5
route average 77% on time
Key facts
- Southwest Airlines flights on LAS to ORD arrived on time 68% of the time in Aug 2025 – Jul 2026.
- 0.3% were cancelled, and 9% arrived an hour or more late.
- That ranks #4 of 5 airlines on this route, which averaged 77% on time overall.
- The largest source of delay minutes was late-arriving aircraft (41%).
On-time trend by month
Why this airline's flights were late
- Late-arriving aircraft41%
- Air traffic control & airport congestion32%
- Airline (crew, maintenance, cleaning, fueling)24%
- Extreme weather2%
- Security0%
Other airlines on LAS to ORD
- United Airlines80% on time · 16 min avg delay
- American Airlines76% on time · 27 min avg delay
- Frontier Airlines67% on time · 32 min avg delay
- Spirit Airlines85% on time · 10 min avg delay
Full LAS to ORD comparison →
Southwest Airlines on-time record across all routes →
608 Southwest Airlines flights tracked on this route; 2 cancelled, 9 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.