How often is WN4638 on time?

Across 16 flights on DEN → SJC from 2026-01-10 to 2026-03-01, WN4638 arrived within 15 minutes of schedule 88% of the time. The median arrival delay was -4 min, and the worst 10% of flights arrived +16 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

• WN4638 on FLL → BNA (23 flights)
• WN4638 on RNO → PHX (58 flights)
• WN4638 on PHX → MKE (24 flights)
• WN4638 on PHX → DEN (7 flights)
• WN4638 on SAT → LAS (5 flights)
• WN4638 on TPA → BNA (1 flights)
• WN4638 on SJU → TPA (1 flights)
• WN4638 on BUR → OAK (13 flights)
• WN4638 on TPA → AUS (15 flights)
• WN4638 on LAS → DEN (5 flights)

Related

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