How often is WN1438 on time?

Across 58 flights on COS → DEN from 2026-04-07 to 2026-06-03, WN1438 arrived within 15 minutes of schedule 84% of the time. The median arrival delay was -4 min, and the worst 10% of flights arrived +21 min or later. 0% of flights were cancelled.

Delay distribution

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

Performance by month

Performance by day of week

Other routes

• WN1438 on LAX → BWI (4 flights)
• WN1438 on PHX → COS (8 flights)
• WN1438 on PDX → DEN (33 flights)
• WN1438 on SAN → SFO (47 flights)
• WN1438 on DEN → COS (11 flights)
• WN1438 on BOS → STL (64 flights)
• WN1438 on LAS → PDX (1 flights)
• WN1438 on JAX → BNA (31 flights)
• WN1438 on AUS → JAX (8 flights)
• WN1438 on DCA → HOU (34 flights)
• WN1438 on BHM → PHX (24 flights)
• WN1438 on HOU → LGB (8 flights)
• WN1438 on LGB → SMF (8 flights)
• WN1438 on ABQ → DEN (14 flights)
• WN1438 on DEN → ORD (35 flights)

Related

• All Southwest Airlines flights on COS → DEN
• Compare airlines on COS → DEN
• Southwest Airlines on the return, DEN → COS