AS305
Alaska Airlines flight 305 — Miami (MIA) to Seattle (SEA)
On time
74%
Avg delay
~56 min
Cancelled
1.7%
AS305 is fairly reliable, though delays happen. About 74% of departures arrive on time. When delays happen, the most common cause is air traffic / NAS.
Monthly breakdown
| Month | On time | Cancelled | Avg delay |
|---|---|---|---|
| 2026-07 | 81% | 0.0% | 34 min |
| 2026-07 | 81% | 0.0% | 38 min |
| 2026-06 | 83% | 0.0% | 41 min |
| 2026-06 | 90% | 0.0% | 23 min |
| 2026-05 | 80% | 3.2% | 44 min |
| 2026-05 | 97% | 0.0% | 24 min |
| 2026-04 | 66% | 3.3% | 50 min |
| 2026-04 | 77% | 0.0% | 28 min |
| 2026-03 | 40% | 3.2% | 59 min |
| 2026-03 | 68% | 0.0% | 52 min |
| 2026-02 | 79% | 0.0% | 61 min |
| 2026-02 | 86% | 0.0% | 34 min |
Top delay cause
air traffic / NAS
Based on 2,384 tracked departures
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Get a free briefingData last updated October 2026. Source: Bureau of Transportation Statistics.