Flight history · Aug 2025 – Jul 2026 · US DOT on-time records
AA 3438 · Louisville (SDF) → Boston (BOS)
Sold by American, flown by Envoy. Still flying: 40 of the last 56 days (Mon, Tue, Wed, Thu, Sun).
Arrives on time58%within 15 minutes, of 51 flights
Cancelled2.0%of scheduled flights
An hour or more late18%of flights that operated
When late, on average62 minlate, among flights 15+ min late
Schedule
Typical times in the Jun 6 – Jul 31, 2026 schedule, local at each airport.
- Leaves SDF
- 17:10
- Arrives BOS
- 19:36
- Flight time
- 2h 26m
- Days flown, last 8 weeks
- 40 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 SDF
All flights leaving Louisville (SDF) at 5–6 pm, wherever they’re going: 70% left within 15 minutes and 2.5% were cancelled (1,862 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.