How often is WN4539 on time?

Across 12 flights on LAS → STL from 2026-06-04 to 2026-06-29, WN4539 arrived within 15 minutes of schedule 33% of the time. The median arrival delay was +34 min, and the worst 10% of flights arrived +73 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

• WN4539 on BOI → OAK (27 flights)
• WN4539 on OAK → LAS (12 flights)
• WN4539 on HOU → MEM (28 flights)
• WN4539 on MCO → IND (30 flights)
• WN4539 on SAN → SJC (59 flights)
• WN4539 on SJC → SEA (5 flights)
• WN4539 on GEG → SJC (1 flights)
• WN4539 on SNA → SMF (31 flights)
• WN4539 on DEN → OKC (5 flights)
• WN4539 on SMF → DEN (5 flights)
• WN4539 on SMF → SEA (13 flights)
• WN4539 on MDW → CHS (49 flights)
• WN4539 on HOU → MDW (24 flights)
• WN4539 on SLC → DEN (15 flights)
• WN4539 on DEN → BUF (10 flights)
• WN4539 on BUF → TPA (5 flights)
• WN4539 on BUF → MCO (5 flights)

Related

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