How often is WN4578 on time?

Across 5 flights on LAS → PSP from 2026-03-08 to 2026-04-05, WN4578 arrived within 15 minutes of schedule 25% of the time. The median arrival delay was +31 min, and the worst 10% of flights arrived +86 min or later. 20% 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

• WN4578 on BWI → TPA (23 flights)
• WN4578 on ABQ → DEN (7 flights)
• WN4578 on STL → BOS (1 flights)
• WN4578 on LAS → BOI (1 flights)
• WN4578 on LAS → RNO (1 flights)
• WN4578 on FLL → DAL (1 flights)
• WN4578 on LAS → BNA (1 flights)
• WN4578 on DEN → TPA (18 flights)
• WN4578 on MDW → CLE (1 flights)
• WN4578 on RDU → DEN (1 flights)
• WN4578 on SMF → SNA (19 flights)

Related

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