How often is WN1642 on time?

Across 47 flights on SJC → ONT from 2026-01-06 to 2026-03-04, WN1642 arrived within 15 minutes of schedule 96% of the time. The median arrival delay was -9 min, and the worst 10% of flights arrived +3 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

• WN1642 on DEN → MSY (23 flights)
• WN1642 on MSY → HOU (16 flights)
• WN1642 on MSY → MCO (4 flights)
• WN1642 on STL → MSY (4 flights)
• WN1642 on PHX → LAX (50 flights)
• WN1642 on LAX → SMF (42 flights)
• WN1642 on DAL → PHX (24 flights)
• WN1642 on BNA → MDW (1 flights)
• WN1642 on BWI → MKE (28 flights)
• WN1642 on DEN → SMF (11 flights)
• WN1642 on RNO → SJC (5 flights)
• WN1642 on MDW → DEN (55 flights)
• WN1642 on FLL → DAL (4 flights)
• WN1642 on OAK → DEN (1 flights)
• WN1642 on BUR → SMF (25 flights)
• WN1642 on HOU → MSY (58 flights)
• WN1642 on BWI → MCO (35 flights)

Related

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