COS → DEN Southwest Airlines

Southwest Airlines · Colorado Springs, CO to Denver, CO · 1,142 flights, 2025-07-01 to 2026-06-30 · aggregated across 53 flight numbers

This route runs much more reliably at some times of day than others — 92% on-time departing 6–9am vs. 55% departing 3–6pm.
On-time arrival
76%
Median delay
-6 min
90th percentile
+44 min
Cancellation rate
0%

How on-time is Southwest Airlines from COS to DEN?

Across every Southwest Airlines flight number on COS → DEN (1,142 flights, 2025-07-01 to 2026-06-30), 76% arrived within 15 minutes of schedule. Median arrival delay -6 min; the worst 10% ran +44 min or later. 0% were cancelled.

Delay distribution

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

ArrivalFlightsShare
Early / on-time86376%
16-30 min11210%
31-60 min767%
61-120 min565%
2+ hrs303%

Performance by month

MonthFlightsOn-timeAvg delay
2025-079656%+28 min
2025-089765%+17 min
2025-099380%+4 min
2025-109778%+5 min
2025-119279%-1 min
2025-129770%+9 min
2026-019892%-10 min
2026-028884%0 min
2026-039776%+5 min
2026-049782%0 min
2026-0510383%+3 min
2026-068262%+19 min

Performance by day of week

DayFlightsOn-time
Mon15570%
Tue15578%
Wed15274%
Thu15575%
Fri15568%
Sat18683%
Sun17981%

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