Flight OddsAS473 STL → SEA
Alaska Airlines · St. Louis, MO to Seattle, WA · 321 flights observed, 2025-07-01 to 2026-06-30 · 1,709 mi
AS473 covers more than one route in the data window — the stats below are for STL → SEA, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
91%
Median delay
-10 min
90th percentile
+14 min
Cancellation rate
1%
How often is AS473 on time?
Across 321 flights on STL → SEA from 2025-07-01 to 2026-06-30, AS473 arrived within 15 minutes of schedule 91% of the time. The median arrival delay was -10 min, and the worst 10% of flights arrived +14 min or later. 1% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 289 | 91% |
| 16-30 min | 11 | 3% |
| 31-60 min | 15 | 5% |
| 61-120 min | 1 | 0% |
| 2+ hrs | 2 | 1% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 30 | 93% | -7 min |
| 2025-08 | 31 | 94% | -4 min |
| 2025-09 | 30 | 90% | -13 min |
| 2025-10 | 31 | 100% | -11 min |
| 2025-11 | 29 | 97% | -9 min |
| 2025-12 | 31 | 61% | +18 min |
| 2026-01 | 6 | 83% | +5 min |
| 2026-02 | 13 | 85% | -9 min |
| 2026-03 | 26 | 92% | -4 min |
| 2026-04 | 30 | 93% | +2 min |
| 2026-05 | 31 | 100% | -14 min |
| 2026-06 | 30 | 93% | -8 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 46 | 91% |
| Tue | 48 | 88% |
| Wed | 46 | 91% |
| Thu | 46 | 96% |
| Fri | 47 | 91% |
| Sat | 38 | 89% |
| Sun | 47 | 89% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…