Flight OddsAS509 CVG → SEA
Alaska Airlines · Cincinnati, OH to Seattle, WA · 34 flights observed, 2026-02-12 to 2026-03-17 · 1,965 mi
AS509 covers more than one route in the data window — the stats below are for CVG → SEA, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
56%
Median delay
+7 min
90th percentile
+78 min
Cancellation rate
6%
How often is AS509 on time?
Across 34 flights on CVG → SEA from 2026-02-12 to 2026-03-17, AS509 arrived within 15 minutes of schedule 56% of the time. The median arrival delay was +7 min, and the worst 10% of flights arrived +78 min or later. 6% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 18 | 56% |
| 16-30 min | 4 | 13% |
| 31-60 min | 5 | 16% |
| 61-120 min | 3 | 9% |
| 2+ hrs | 2 | 6% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-02 | 17 | 53% | +55 min |
| 2026-03 | 15 | 60% | +26 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 5 | 60% |
| Tue | 5 | 60% |
| Wed | 3 | 67% |
| Thu | 5 | 40% |
| Fri | 5 | 80% |
| Sat | 4 | 75% |
| Sun | 5 | 20% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…