How often is WN4504 on time?

Across 31 flights on STL → PHL from 2026-04-09 to 2026-06-01, WN4504 arrived within 15 minutes of schedule 81% of the time. The median arrival delay was -3 min, and the worst 10% of flights arrived +33 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

• WN4504 on OMA → MDW (27 flights)
• WN4504 on PIT → MCO (1 flights)
• WN4504 on SNA → DEN (33 flights)
• WN4504 on OAK → SNA (5 flights)
• WN4504 on SJC → SNA (8 flights)
• WN4504 on STL → MCO (30 flights)
• WN4504 on BUF → MDW (42 flights)
• WN4504 on PHX → BUF (21 flights)
• WN4504 on SLC → SMF (14 flights)
• WN4504 on MCI → STL (58 flights)
• WN4504 on SJC → LAX (24 flights)

Related

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