How often is WN4127 on time?

Across 5 flights on MDW → STL from 2025-11-22 to 2026-01-03, WN4127 arrived within 15 minutes of schedule 100% of the time. The median arrival delay was -10 min, and the worst 10% of flights arrived +1 min or later. 20% 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

• WN4127 on MEM → DAL (23 flights)
• WN4127 on DAL → AMA (16 flights)
• WN4127 on AMA → LAS (4 flights)
• WN4127 on DAL → COS (4 flights)
• WN4127 on SAN → SMF (50 flights)
• WN4127 on SMF → AUS (1 flights)
• WN4127 on ONT → BNA (25 flights)
• WN4127 on RSW → BWI (1 flights)
• WN4127 on SMF → LAS (1 flights)
• WN4127 on MCO → HOU (1 flights)
• WN4127 on MCO → BNA (1 flights)
• WN4127 on PHX → SLC (46 flights)
• WN4127 on STL → DEN (13 flights)
• WN4127 on MCO → PHX (1 flights)
• WN4127 on PHX → LAS (10 flights)

Related

• All Southwest Airlines flights on MDW → STL
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• Southwest Airlines on the return, STL → MDW