How often is AA4509 on time?

Across 41 flights on LGA → STL from 2026-05-21 to 2026-06-30, AA4509 arrived within 15 minutes of schedule 88% of the time. The median arrival delay was -16 min, and the worst 10% of flights arrived +27 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

• AA4509 on STL → LGA (34 flights)
• AA4509 on JFK → ORF (44 flights)
• AA4509 on JFK → RDU (30 flights)
• AA4509 on RDU → JFK (26 flights)
• AA4509 on PHL → BOS (4 flights)
• AA4509 on DCA → BDL (4 flights)
• AA4509 on MSY → DCA (3 flights)
• AA4509 on PIT → LGA (58 flights)
• AA4509 on MCI → ORD (19 flights)
• AA4509 on ORD → MCI (19 flights)
• AA4509 on EYW → PHL (33 flights)
• AA4509 on PHL → EYW (33 flights)
• AA4509 on PIT → ORD (27 flights)
• AA4509 on BTV → PHL (27 flights)
• AA4509 on PHL → BTV (27 flights)

Related

• All American Airlines flights on LGA → STL
• Compare airlines on LGA → STL
• American Airlines on the return, STL → LGA