Flight OddsMIA → SEA Delta Air Lines
Delta Air Lines · Miami, FL to Seattle, WA · 365 flights, 2025-07-01 to 2026-06-30 · aggregated across 3 flight numbers
On-time arrival
62%
Median delay
+6 min
90th percentile
+68 min
Cancellation rate
2%
How on-time is Delta Air Lines from MIA to SEA?
Across every Delta Air Lines flight number on MIA → SEA (365 flights, 2025-07-01 to 2026-06-30), 62% arrived within 15 minutes of schedule. Median arrival delay +6 min; the worst 10% ran +68 min or later. 2% were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 222 | 62% |
| 16-30 min | 41 | 11% |
| 31-60 min | 51 | 14% |
| 61-120 min | 25 | 7% |
| 2+ hrs | 18 | 5% |
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 | 29 | 66% | +82 min |
| 2026-01 | 31 | 68% | +12 min |
| 2026-02 | 28 | 61% | +30 min |
| 2026-03 | 28 | 46% | +37 min |
| 2026-04 | 30 | 57% | +33 min |
| 2026-05 | 31 | 52% | +19 min |
| 2026-06 | 30 | 83% | +4 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 51 | 55% |
| Tue | 53 | 77% |
| Wed | 50 | 72% |
| Thu | 51 | 59% |
| Fri | 50 | 52% |
| Sat | 52 | 65% |
| Sun | 50 | 54% |
DL flight numbers on MIA → SEA
Related
Based on US DOT Bureau of Transportation Statistics on-time data. Loading the full breakdown…