Flight profile · Alaska Airlines
AS601
Reno (RNO) to Seattle (SEA) · scheduled 2:32 PM – 4:29 PM
How AS601 performs
379 operations, 2025-04-23 to 2026-06-30.
AS601 arrived on time 68.9% of the time, against 76.7% for all RNO → SEA flights — this specific departure is 7.8 percentage points worse than the route as a whole. Against Alaska Airlines’s own flights on this route it is 8.3 points worse.
Source: US DOT Bureau of Transportation Statistics · 379 operations between 2025-04-23 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| AS601 | 68.9% | 1.58% | -2 min | 8.3% | 379 |
| Alaska Airlines on RNO → SEA | 77.2% | 1.18% | -3 min | 4.6% | 2,115 |
| All RNO → SEA flights | 76.7% | 1.03% | -3 min | 4.7% | 2,522 |
Source: FlyerIntel analysis of US DOT BTS data · 2025-04-23 to 2026-06-30
Other routes AS601 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 |
|---|---|---|---|
| LAS→SEA Las Vegas to Seattle | 2023-10-02 – 2025-06-09 | 542 | 67.4% |
Because the same number has served different journeys, the statistics above describe only the route AS601 currently operates. Blending them would produce an average of two different flights.
Why AS601 runs late
Where US DOT attributed the delay minutes on this flight.
the inbound aircraft was late, so this flight started late
crew, maintenance, boarding, fuelling — within the carrier’s control
airspace and airport capacity, including weather-driven flow control
weather severe enough to stop this flight specifically
screening or terminal security incidents
Share of the delay minutes US DOT attributed to each cause for AS601 on RNO → SEA. A single late flight can carry more than one cause, and only delays of fifteen minutes or more are attributed at all.
Data and methodology
Calculated by FlyerIntel from 379 records of AS601 operating RNO → 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.