DL506 MIA → SEA
Delta Air Lines · Miami, FL to Seattle, WA · 263 flights observed, 2025-07-01 to 2026-06-06 · 2,724 mi
DL506 covers more than one route in the data window — the stats below are for MIA → SEA, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
60%
Median delay
+8 min
90th percentile
+77 min
Cancellation rate
2%
How often is DL506 on time?
Across 263 flights on MIA → SEA from 2025-07-01 to 2026-06-06, DL506 arrived within 15 minutes of schedule 60% of the time. The median arrival delay was +8 min, and the worst 10% of flights arrived +77 min or later. 2% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 153 | 60% |
| 16-30 min | 30 | 12% |
| 31-60 min | 40 | 16% |
| 61-120 min | 17 | 7% |
| 2+ hrs | 16 | 6% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 30 | 67% | +4 min |
| 2025-08 | 31 | 48% | +51 min |
| 2025-09 | 30 | 53% | +49 min |
| 2025-10 | 31 | 84% | 0 min |
| 2025-11 | 28 | 61% | +51 min |
| 2025-12 | 18 | 72% | +61 min |
| 2026-02 | 17 | 59% | +41 min |
| 2026-03 | 28 | 46% | +37 min |
| 2026-04 | 12 | 33% | +65 min |
| 2026-05 | 25 | 64% | +15 min |
| 2026-06 | 6 | 50% | +40 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 36 | 47% |
| Tue | 37 | 78% |
| Wed | 35 | 74% |
| Thu | 38 | 53% |
| Fri | 37 | 49% |
| Sat | 38 | 63% |
| Sun | 35 | 54% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…