How often is WN636 on time?

Across 34 flights on DEN → SMF from 2026-04-07 to 2026-06-03, WN636 arrived within 15 minutes of schedule 71% of the time. The median arrival delay was +1 min, and the worst 10% of flights arrived +26 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

• WN636 on SEA → SMF (19 flights)
• WN636 on MDW → SEA (7 flights)
• WN636 on SMF → EUG (4 flights)
• WN636 on DEN → MDW (4 flights)
• WN636 on BNA → FLL (24 flights)
• WN636 on SAN → MCI (33 flights)
• WN636 on BNA → SAT (25 flights)
• WN636 on SAT → HOU (8 flights)
• WN636 on DEN → GRR (46 flights)
• WN636 on ONT → MDW (18 flights)
• WN636 on PHX → SEA (1 flights)
• WN636 on BWI → CLT (1 flights)
• WN636 on CLT → BNA (1 flights)
• WN636 on MSY → DAL (25 flights)
• WN636 on DAL → MCI (8 flights)
• WN636 on HOU → DEN (24 flights)
• WN636 on PHX → DEN (16 flights)
• WN636 on DEN → JAX (8 flights)
• WN636 on LAX → SFO (30 flights)
• WN636 on SFO → LAX (5 flights)
• WN636 on DEN → LAX (15 flights)
• WN636 on IND → DEN (10 flights)
• WN636 on MCO → IND (10 flights)

Related

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• Southwest Airlines on the return, SMF → DEN