ON TIMEBOARD

AS 448 on time

Alaska Airlines 448: Seattle to Spokane at 8:15 p.m. (past 12 months)

On time
80%
225 flights · likely 74–85%
Cancelled
0.0%
of scheduled flights
Typical arrival
−4 min
median vs schedule
When late
+47 min
average delay
Similar flights
83%
AS, same route & hour

About 1 in 5 AS 448 flights from Seattle arrived 15+ minutes late, diverted or cancelled over the past year (20%); 0.0% were cancelled. The typical flight landed 4 minutes early.

AS 448: SEA → GEG

Scheduled to leave Seattle at 8:15 p.m. local time. Over the past year it arrived on time 80% of the time (225 flights), in line with other AS flights on the route at that hour (83%). Last seen in the data Aug 31, 2026.

Month by month

40%70%100%Oct 2025: too few flights (6 flights)OctNov 2025: 79% on time (19 flights)79NovDec 2025: 85% on time (27 flights)85DecJan 2026: 65% on time (31 flights)65JanFeb 2026: 82% on time (28 flights)82FebMar 2026: 87% on time (31 flights)87MarApr 2026: 90% on time (30 flights)90AprMay 2026: 84% on time (31 flights)84MayJun 2026: too few flights (9 flights)JunAug 2026: too few flights (13 flights)Aug

By day of week

DayFlightsOn time
Monday3376%
Tuesday3388%
Wednesday3388%
Thursday3181%
Friday3250%
Saturday3291%
Sunday3187%

Why it was late

Late inbound plane 49%Airline (crew, maintenance, ops) 35%Air traffic & airport (NAS) 15%Severe weather 1%

All flights SEA → GEG · Connecting off AS 448? Check the risk

Questions

How often is AS 448 from SEA to GEG late?

Alaska Airlines 448 from Seattle, WA to Spokane, WA arrived 15 or more minutes late, was diverted or was cancelled on 20% of 225 scheduled flights between September 2025 and August 2026. 0.0% were cancelled.

Flight numbers change. Figures cover flights with this airline, number and route only. "Likely range" is the 95% interval for the true on-time rate given the number of flights. This is history, not live status: check Alaska Airlines for today's flight. Method.