Flight OddsDelta Air Lines · Dallas/Fort Worth, TX to Los Angeles, CA · 39 flights observed, 2026-02-12 to 2026-04-11 · 1,235 mi
DL521 covers more than one route in the data window — the stats below are for DFW → LAX, the one it has flown most recently. The others are linked under “Other routes”.
How often is DL521 on time?
Across 39 flights on DFW → LAX from 2026-02-12 to 2026-04-11, DL521 arrived within 15 minutes of schedule 84% of the time. The median arrival delay was -21 min, and the worst 10% of flights arrived +28 min or later. 3% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 32 | 84% |
| 16-30 min | 2 | 5% |
| 31-60 min | 2 | 5% |
| 61-120 min | 2 | 5% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-02 | 13 | 62% | +21 min |
| 2026-03 | 18 | 94% | -21 min |
| 2026-04 | 7 | 100% | -26 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 3 | 100% |
| Tue | 8 | 100% |
| Wed | 8 | 63% |
| Thu | 4 | 50% |
| Fri | 9 | 100% |
| Sat | 4 | 100% |
| Sun | 2 | 50% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…