How often is WN556 on time?

Across 16 flights on STL → MDW from 2026-06-04 to 2026-06-29, WN556 arrived within 15 minutes of schedule 44% of the time. The median arrival delay was +18 min, and the worst 10% of flights arrived +53 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

• WN556 on VPS → STL (7 flights)
• WN556 on MDW → LGA (12 flights)
• WN556 on DEN → STL (4 flights)
• WN556 on BWI → MYR (4 flights)
• WN556 on MYR → STL (4 flights)
• WN556 on OAK → ONT (26 flights)
• WN556 on ONT → PHX (50 flights)
• WN556 on PHX → MCO (7 flights)
• WN556 on DEN → ONT (1 flights)
• WN556 on PHX → MDW (15 flights)
• WN556 on LAX → DEN (10 flights)
• WN556 on AUS → MSY (50 flights)
• WN556 on MSY → BWI (27 flights)
• WN556 on HOU → LGB (31 flights)
• WN556 on PHX → SFO (5 flights)
• WN556 on SLC → LAS (28 flights)
• WN556 on FLL → PIT (1 flights)
• WN556 on MCO → BDL (27 flights)
• WN556 on ATL → MCO (9 flights)
• WN556 on BDL → BWI (8 flights)
• WN556 on PIT → ATL (4 flights)
• WN556 on COS → BWI (42 flights)
• WN556 on DEN → COS (18 flights)
• WN556 on DAL → MCO (7 flights)
• WN556 on LIT → DAL (7 flights)
• WN556 on MDW → MHT (1 flights)
• WN556 on AUS → ECP (29 flights)
• WN556 on ECP → BNA (25 flights)
• WN556 on PHX → AUS (14 flights)
• WN556 on BNA → LAX (15 flights)

Related

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• Southwest Airlines on the return, MDW → STL