Flight OddsAS328 SEA → ORD
Alaska Airlines · Seattle, WA to Chicago, IL · 232 flights observed, 2025-07-01 to 2026-06-30 · 1,721 mi
AS328 covers more than one route in the data window — the stats below are for SEA → ORD, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
83%
Median delay
-7 min
90th percentile
+29 min
Cancellation rate
1%
How often is AS328 on time?
Across 232 flights on SEA → ORD from 2025-07-01 to 2026-06-30, AS328 arrived within 15 minutes of schedule 83% of the time. The median arrival delay was -7 min, and the worst 10% of flights arrived +29 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 | 189 | 83% |
| 16-30 min | 18 | 8% |
| 31-60 min | 15 | 7% |
| 61-120 min | 5 | 2% |
| 2+ hrs | 2 | 1% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 30 | 60% | +15 min |
| 2025-08 | 29 | 76% | +4 min |
| 2025-09 | 29 | 86% | -3 min |
| 2025-10 | 6 | 67% | +8 min |
| 2025-11 | 19 | 89% | +2 min |
| 2025-12 | 12 | 83% | +3 min |
| 2026-01 | 5 | 60% | +6 min |
| 2026-03 | 12 | 100% | -17 min |
| 2026-04 | 27 | 93% | -10 min |
| 2026-05 | 31 | 90% | -8 min |
| 2026-06 | 29 | 86% | +4 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 36 | 83% |
| Tue | 36 | 92% |
| Wed | 29 | 86% |
| Thu | 31 | 87% |
| Fri | 35 | 71% |
| Sat | 30 | 77% |
| Sun | 32 | 81% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…