How often is WN3143 on time?

Across 54 flights on LAS → COS from 2025-11-02 to 2026-01-04, WN3143 arrived within 15 minutes of schedule 70% of the time. The median arrival delay was -1 min, and the worst 10% of flights arrived +49 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

• WN3143 on ONT → BWI (27 flights)
• WN3143 on ONT → OAK (8 flights)
• WN3143 on LAS → ONT (1 flights)
• WN3143 on DCA → STL (47 flights)
• WN3143 on RSW → BUF (3 flights)
• WN3143 on TPA → DEN (31 flights)
• WN3143 on HOU → SMF (18 flights)
• WN3143 on LAS → LGB (35 flights)
• WN3143 on LGB → SJC (5 flights)
• WN3143 on RDU → LAS (5 flights)

Related

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