Flight history · Aug 2025 – Jul 2026 · US DOT on-time records
DL 521 · Los Angeles (LAX) → Dallas-Fort Worth (DFW)
Sold by Delta. Still flying: 49 of the last 56 days (Daily).
Arrives on time88%within 15 minutes, of 353 flights
Cancelled2.0%of scheduled flights
An hour or more late4%of flights that operated
When late, on average84 minlate, among flights 15+ min late
Schedule
Typical times in the Jun 6 – Jul 31, 2026 schedule, local at each airport (Dallas-Fort Worth is 2 h ahead of Los Angeles).
- Leaves LAX
- 07:35
- Arrives DFW
- 12:48
- Flight time
- 3h 13m
- Days flown, last 8 weeks
- 49 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 LAX
All flights leaving Los Angeles (LAX) at 7–8 am, wherever they’re going: 90% left within 15 minutes and 1.3% were cancelled (12,122 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.