Flight history · Aug 2025 – Jul 2026 · US DOT on-time records
DL 521 · Dallas-Fort Worth (DFW) → Los Angeles (LAX)
Sold by Delta. Still flying: 22 of the last 56 days (Tue–Fri).
Arrives on time88%within 15 minutes, of 61 flights
Cancelled1.6%of scheduled flights
An hour or more late5%of flights that operated
When late, on average64 minlate, among flights 15+ min late
Schedule
Typical times in the Jun 6 – Jul 31, 2026 schedule, local at each airport (Los Angeles is 2 h behind Dallas-Fort Worth).
- Leaves DFW
- 13:45
- Arrives LAX
- 14:58
- Flight time
- 3h 13m
- Days flown, last 8 weeks
- 22 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 DFW
All flights leaving Dallas-Fort Worth (DFW) at 1–2 pm, wherever they’re going: 70% left within 15 minutes and 2.6% were cancelled (15,893 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.