How often is WN4040 on time?

Across 16 flights on DEN → ONT from 2026-04-11 to 2026-05-31, WN4040 arrived within 15 minutes of schedule 100% of the time. The median arrival delay was -2 min, and the worst 10% of flights arrived +6 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

• WN4040 on TPA → PHX (19 flights)
• WN4040 on PHX → ABQ (7 flights)
• WN4040 on SMF → LGB (4 flights)
• WN4040 on MDW → BNA (1 flights)
• WN4040 on MSY → DAL (24 flights)
• WN4040 on PHX → MSY (8 flights)
• WN4040 on LAS → SJC (1 flights)
• WN4040 on SJC → SAN (8 flights)
• WN4040 on MCO → MKE (1 flights)
• WN4040 on BNA → LAS (1 flights)
• WN4040 on MCO → HOU (1 flights)
• WN4040 on STL → OMA (18 flights)
• WN4040 on BUR → DAL (1 flights)
• WN4040 on OAK → SNA (30 flights)
• WN4040 on SEA → OAK (4 flights)
• WN4040 on OAK → LAS (34 flights)

Related

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