How often is WN4559 on time?

Across 11 flights on SMF → PHX from 2026-02-12 to 2026-03-01, WN4559 arrived within 15 minutes of schedule 82% of the time. The median arrival delay was -5 min, and the worst 10% of flights arrived +28 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

• WN4559 on BNA → BHM (27 flights)
• WN4559 on MKE → LAS (1 flights)
• WN4559 on CMH → MDW (16 flights)
• WN4559 on MDW → OMA (16 flights)
• WN4559 on OMA → DEN (16 flights)
• WN4559 on MCI → FLL (5 flights)
• WN4559 on MCO → HOU (1 flights)
• WN4559 on LAS → ONT (1 flights)
• WN4559 on LAS → OAK (4 flights)
• WN4559 on SMF → LAS (24 flights)
• WN4559 on CLE → TPA (10 flights)

Related

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