How often is WN4099 on time?

Across 25 flights on ONT → SJC from 2025-10-02 to 2025-10-30, WN4099 arrived within 15 minutes of schedule 64% of the time. The median arrival delay was +7 min, and the worst 10% of flights arrived +48 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

• WN4099 on SMF → PDX (19 flights)
• WN4099 on PDX → DEN (12 flights)
• WN4099 on LAS → MCI (1 flights)
• WN4099 on MCO → MKE (1 flights)
• WN4099 on LAS → SLC (11 flights)
• WN4099 on STL → LAS (8 flights)
• WN4099 on BWI → LAS (3 flights)
• WN4099 on TPA → BWI (3 flights)
• WN4099 on PHX → ONT (42 flights)
• WN4099 on BNA → MCO (18 flights)
• WN4099 on MCI → BNA (13 flights)
• WN4099 on OKC → DCA (25 flights)
• WN4099 on TPA → PIT (5 flights)

Related

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