Flight history · Aug 2025 – Jul 2026 · US DOT on-time records
DL 820 · Washington (DCA) → Salt Lake City (SLC)
Sold by Delta. Still flying: 55 of the last 56 days (Daily).
Arrives on time76%within 15 minutes, of 364 flights
Cancelled1.1%of scheduled flights
An hour or more late7%of flights that operated
When late, on average59 minlate, among flights 15+ min late
Schedule
Typical times in the Jun 6 – Jul 31, 2026 schedule, local at each airport (Salt Lake City is 2 h behind Washington).
- Leaves DCA
- 17:50
- Arrives SLC
- 20:37
- Flight time
- 4h 47m
- Days flown, last 8 weeks
- 55 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 DCA
All flights leaving Washington (DCA) at 5–6 pm, wherever they’re going: 63% left within 15 minutes and 4.3% were cancelled (12,159 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.