Flight profile · Alaska Airlines
AS328
Seattle (SEA) to Chicago (ORD) · scheduled 11:40 PM – 5:00 AM
How AS328 performs
807 operations, 2023-07-01 to 2026-06-30.
AS328 arrived on time 78.9% of the time, against 77.6% for all SEA → ORD flights — this specific departure is 1.3 percentage points better than the route as a whole. Against Alaska Airlines’s own flights on this route it is 4.3 points better.
Source: US DOT Bureau of Transportation Statistics · 807 operations between 2023-07-01 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| AS328 | 78.9% | 0.37% | -5 min | 3.6% | 807 |
| Alaska Airlines on SEA → ORD | 74.7% | 0.71% | -2 min | 5.7% | 5,470 |
| All SEA → ORD flights | 77.6% | 0.93% | -5 min | 6.7% | 15,693 |
Source: FlyerIntel analysis of US DOT BTS data · 2023-07-01 to 2026-06-30
Other routes AS328 has flown
A flight number is a slot in a schedule, and carriers reassign it. These are the other city pairs this number served in the analysis period.
| Route | Operated | Flights | On time |
|---|---|---|---|
| BZN→SEA Bozeman to Seattle | 2026-02-12 – 2026-03-17 | 34 | — |
| FAI→SEA Fairbanks to Seattle | 2026-01-07 – 2026-02-11 | 36 | — |
| SEA→GEG Seattle to Spokane | 2025-12-02 – 2025-12-17 | 16 | — |
| SEA→LAX Seattle to Los Angeles | 2025-02-01 – 2025-02-01 | 1 | — |
Because the same number has served different journeys, the statistics above describe only the route AS328 currently operates. Blending them would produce an average of two different flights.
Data and methodology
Calculated by FlyerIntel from 807 records of AS328 operating SEA → ORD, published by the US DOT Bureau of Transportation Statistics. A flight counts as delayed when it arrives 15 or more minutes after schedule. Cancelled and diverted flights are excluded from the on-time rate and reported separately. Flight numbers are resolved as carrier plus number plus route, because the same number serves different routes over time.