ORD → LAS Southwest Airlines

Southwest Airlines · Chicago, IL to Las Vegas, NV · 670 flights, 2025-07-01 to 2026-06-03 · aggregated across 23 flight numbers

This route runs much more reliably at some times of day than others — 89% on-time departing 6–9am vs. 49% departing 6–9pm.
On-time arrival
73%
Median delay
-3 min
90th percentile
+67 min
Cancellation rate
1%

How on-time is Southwest Airlines from ORD to LAS?

Across every Southwest Airlines flight number on ORD → LAS (670 flights, 2025-07-01 to 2026-06-03), 73% arrived within 15 minutes of schedule. Median arrival delay -3 min; the worst 10% ran +67 min or later. 1% were cancelled.

Delay distribution

Arrival delay for completed flights (excludes cancellations and diversions).

ArrivalFlightsShare
Early / on-time48573%
16-30 min579%
31-60 min518%
61-120 min447%
2+ hrs264%

Performance by month

MonthFlightsOn-timeAvg delay
2025-076159%+24 min
2025-085774%+18 min
2025-095684%+2 min
2025-105791%-1 min
2025-115775%+13 min
2025-126269%+14 min
2026-016177%-2 min
2026-025680%-3 min
2026-035575%+17 min
2026-046463%+28 min
2026-057061%+21 min
2026-06786%+3 min

Performance by day of week

DayFlightsOn-time
Mon10370%
Tue9780%
Wed9874%
Thu10174%
Fri10169%
Sat7778%
Sun8666%

Based on US DOT Bureau of Transportation Statistics on-time data. Loading the full breakdown…