Flight history · Aug 2025 – Jul 2026 · US DOT on-time records
DL 840 · Atlanta (ATL) → Denver (DEN)
Sold by Delta. Still flying: 1 of the last 56 days.
Arrives on time86%within 15 minutes, of 91 flights
Cancelled0.0%of scheduled flights
An hour or more late8%of flights that operated
When late, on average66 minlate, among flights 15+ min late
Schedule
Typical times in the Jun 6 – Jul 31, 2026 schedule, local at each airport (Denver is 2 h behind Atlanta).
- Leaves ATL
- 07:25
- Arrives DEN
- 08:44
- Flight time
- 3h 19m
- Days flown, last 8 weeks
- 1 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 ATL
All flights leaving Atlanta (ATL) at 7–8 am, wherever they’re going: 90% left within 15 minutes and 2.2% were cancelled (15,263 flights in the year). Other Delta flights on this route →
Upcoming forecasts
This flight isn’t in our published forecasts for the next few days.