Flight profile · Alaska Airlines
AS641
Tucson (TUS) to Seattle (SEA) · scheduled 3:33 PM – 7:10 PM
How AS641 performs
994 operations, 2023-07-01 to 2026-06-30.
AS641 arrived on time 77.0% of the time, against 83.6% for all TUS → SEA flights — this specific departure is 6.6 percentage points worse than the route as a whole. Against Alaska Airlines’s own flights on this route it is 5.2 points worse.
Source: US DOT Bureau of Transportation Statistics · 994 operations between 2023-07-01 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| AS641 | 77.0% | 0.50% | -1 min | 4.6% | 994 |
| Alaska Airlines on TUS → SEA | 82.2% | 0.57% | -3 min | 3.5% | 1,575 |
| All TUS → SEA flights | 83.6% | 0.53% | -6 min | 4.2% | 3,186 |
Source: FlyerIntel analysis of US DOT BTS data · 2023-07-01 to 2026-06-30
By day of week
Does AS641 run worse on particular days?
Thursday is historically the most reliable day and Friday the least, a gap of 7.3 percentage points.
Source: FlyerIntel analysis of US DOT BTS data · 2023-07-01 to 2026-06-30 · Days with fewer than 120 operations are not scored.
Data and methodology
Calculated by FlyerIntel from 994 records of AS641 operating TUS → SEA, 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.