How often is WN3851 on time?

Across 20 flights on LAS → STL from 2026-06-04 to 2026-06-29, WN3851 arrived within 15 minutes of schedule 65% of the time. The median arrival delay was +12 min, and the worst 10% of flights arrived +43 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

• WN3851 on PHX → ONT (50 flights)
• WN3851 on SBA → LAS (8 flights)
• WN3851 on LGB → OAK (28 flights)
• WN3851 on OAK → GEG (13 flights)
• WN3851 on HOU → LGB (8 flights)
• WN3851 on TPA → BWI (53 flights)
• WN3851 on MSY → PHX (59 flights)
• WN3851 on PHX → SFO (5 flights)
• WN3851 on PHX → SAN (24 flights)
• WN3851 on MDW → MSY (31 flights)
• WN3851 on CLT → BWI (14 flights)
• WN3851 on MDW → CLT (15 flights)
• WN3851 on PVD → MDW (20 flights)
• WN3851 on MDW → SAN (5 flights)
• WN3851 on SAN → PDX (5 flights)
• WN3851 on CLT → DAL (1 flights)
• WN3851 on DAL → PHX (1 flights)
• WN3851 on PHX → SJC (1 flights)

Related

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