How often is WN999 on time?

Across 42 flights on STL → ATL from 2026-01-06 to 2026-03-04, WN999 arrived within 15 minutes of schedule 95% of the time. The median arrival delay was -14 min, and the worst 10% of flights arrived -3 min or later. 2% 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

• WN999 on BWI → MDW (19 flights)
• WN999 on SAN → BWI (7 flights)
• WN999 on FLL → BWI (12 flights)
• WN999 on DAL → OAK (26 flights)
• WN999 on BUR → SJC (24 flights)
• WN999 on AUS → LAS (1 flights)
• WN999 on DEN → SAT (28 flights)
• WN999 on SAN → DEN (15 flights)
• WN999 on SAT → HOU (20 flights)
• WN999 on OAK → PSP (8 flights)
• WN999 on MCI → MCO (5 flights)
• WN999 on ICT → DEN (59 flights)
• WN999 on MEM → DAL (1 flights)
• WN999 on MCO → SDF (9 flights)
• WN999 on SMF → HOU (1 flights)
• WN999 on MDW → LAX (8 flights)
• WN999 on SDF → BWI (4 flights)
• WN999 on SJU → MCO (58 flights)
• WN999 on LGA → BNA (24 flights)

Related

• All Southwest Airlines flights on STL → ATL
• Compare airlines on STL → ATL
• Southwest Airlines on the return, ATL → STL