Flight history · Aug 2025 – Jul 2026 · US DOT on-time records
AA 4509 · New York (LGA) → St Louis (STL)
Sold by American, flown by Republic. Still flying: 56 of the last 56 days (Daily).
Arrives on time84%within 15 minutes, of 72 flights
Cancelled4.2%of scheduled flights
An hour or more late9%of flights that operated
When late, on average115 minlate, among flights 15+ min late
Schedule
Typical times in the Jun 6 – Jul 31, 2026 schedule, local at each airport (St Louis is 1 h behind New York).
- Leaves LGA
- 12:58
- Arrives STL
- 14:50
- Flight time
- 2h 52m
- Days flown, last 8 weeks
- 56 of 56
Each square is a day, Sat Jun 6 to Fri Jul 31, two weeks per row (each column is the same weekday); filled = flew.
How late it arrives
Share of flights that operated arriving more than this late.
Horizontal: minutes late at arrival (0 to 3 hours). Vertical: share of flights later than that.
Its hour at LGA
All flights leaving New York (LGA) at 12–1 pm, wherever they’re going: 79% left within 15 minutes and 3.9% were cancelled (9,322 flights in the year). Other American flights on this route →
Upcoming forecasts
Our odds that this flight is late or cancelled on the days we publish.