How often is WN504 on time?

Across 38 flights on SMF → ONT from 2025-11-02 to 2026-01-05, WN504 arrived within 15 minutes of schedule 89% of the time. The median arrival delay was -10 min, and the worst 10% of flights arrived +14 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

• WN504 on BNA → DEN (27 flights)
• WN504 on DEN → PIT (1 flights)
• WN504 on SJC → DAL (33 flights)
• WN504 on DAL → MSY (18 flights)
• WN504 on RNO → LAS (47 flights)
• WN504 on MSY → HOU (11 flights)
• WN504 on AUS → DAL (13 flights)
• WN504 on DAL → MDW (17 flights)
• WN504 on LAS → PHX (24 flights)
• WN504 on ONT → LAS (25 flights)
• WN504 on SEA → SMF (1 flights)
• WN504 on MDW → CLT (1 flights)
• WN504 on DSM → STL (26 flights)
• WN504 on ABQ → LAS (1 flights)
• WN504 on PHX → DSM (8 flights)
• WN504 on SJC → EUG (4 flights)
• WN504 on AUS → BWI (56 flights)
• WN504 on LAX → AUS (24 flights)
• WN504 on MDW → MCI (8 flights)
• WN504 on MDW → LAS (1 flights)
• WN504 on BNA → MCO (10 flights)

Related

• All Southwest Airlines flights on SMF → ONT
• Compare airlines on SMF → ONT
• Southwest Airlines on the return, ONT → SMF