Flight history · Aug 2025 – Jul 2026 · US DOT on-time records
DL 638 · Boston (BOS) → Atlanta (ATL)
Sold by Delta. Still flying: 47 of the last 56 days (Daily).
Arrives on time80%within 15 minutes, of 275 flights
Cancelled1.1%of scheduled flights
An hour or more late7%of flights that operated
When late, on average75 minlate, among flights 15+ min late
Schedule
Typical times in the Jun 6 – Jul 31, 2026 schedule, local at each airport.
- Leaves BOS
- 15:10
- Arrives ATL
- 18:10
- Flight time
- 3h 00m
- Days flown, last 8 weeks
- 47 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 BOS
All flights leaving Boston (BOS) at 3–4 pm, wherever they’re going: 70% left within 15 minutes and 2.8% were cancelled (9,419 flights in the year). Other Delta flights on this route →
Upcoming forecasts
Our odds that this flight is late or cancelled on the days we publish.