How often is WN4315 on time?

Across 21 flights on STL → SFO from 2025-10-02 to 2025-10-30, WN4315 arrived within 15 minutes of schedule 67% of the time. The median arrival delay was +7 min, and the worst 10% of flights arrived +53 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

• WN4315 on PHX → HOU (27 flights)
• WN4315 on SMF → BOI (32 flights)
• WN4315 on RDU → TPA (28 flights)
• WN4315 on SJC → BUR (37 flights)
• WN4315 on SAT → DAL (5 flights)
• WN4315 on HOU → BWI (1 flights)
• WN4315 on TPA → BNA (1 flights)
• WN4315 on BNA → RSW (1 flights)
• WN4315 on PIT → AUS (35 flights)
• WN4315 on AUS → DEN (5 flights)
• WN4315 on AUS → DAL (1 flights)

Related

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