How often is WN3937 on time?

Across 16 flights on STL → LAX from 2026-06-04 to 2026-06-29, WN3937 arrived within 15 minutes of schedule 81% of the time. The median arrival delay was +8 min, and the worst 10% of flights arrived +27 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

• WN3937 on ATL → STL (22 flights)
• WN3937 on LAX → OAK (4 flights)
• WN3937 on AUS → IND (42 flights)
• WN3937 on MCO → TUL (16 flights)
• WN3937 on TUL → HOU (7 flights)
• WN3937 on TUL → LAS (1 flights)
• WN3937 on LAS → OKC (33 flights)
• WN3937 on OGG → HNL (64 flights)
• WN3937 on ATL → TPA (17 flights)
• WN3937 on PIT → ATL (13 flights)
• WN3937 on OMA → PHX (50 flights)
• WN3937 on HOU → OMA (1 flights)
• WN3937 on STL → PHL (35 flights)

Related

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