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Alaska Airlines / SEA → PIT

AS 412 on time

Alaska Airlines 412: Seattle to Pittsburgh at 9:34 a.m.; Pittsburgh to Seattle at 6:10 p.m. (past 12 months). Figures below the title are for SEA → PIT, its busiest leg

On time
79%
336 flights · likely 74–83%
Cancelled
0.9%
of scheduled flights
Typical arrival
−8 min
median vs schedule
When late
+45 min
average delay
Similar flights
77%
AS, same route & hour

About 1 in 5 AS 412 flights from Seattle arrived 15+ minutes late, diverted or cancelled over the past year (21%); 0.9% were cancelled. The typical flight landed 8 minutes early.

AS 412: SEA → PIT

Scheduled to leave Seattle at 9:34 a.m. local time. Over the past year it arrived on time 79% of the time (336 flights), in line with other AS flights on the route at that hour (77%). Last seen in the data Aug 31, 2026.

Month by month

40%70%100%Sep 2025: 80% on time (30 flights)80SepOct 2025: 90% on time (31 flights)90OctNov 2025: 85% on time (26 flights)85NovDec 2025: 63% on time (27 flights)63DecJan 2026: 75% on time (24 flights)75JanFeb 2026: 80% on time (20 flights)80FebMar 2026: 77% on time (26 flights)77MarApr 2026: 80% on time (30 flights)80AprMay 2026: 84% on time (31 flights)84MayJun 2026: 77% on time (30 flights)77JunJul 2026: 71% on time (31 flights)71JulAug 2026: 80% on time (30 flights)80Aug

By day of week

DayFlightsOn time
Monday5176%
Tuesday4190%
Wednesday5287%
Thursday5175%
Friday5267%
Saturday3784%
Sunday5275%

Why it was late

Airline (crew, maintenance, ops) 52%Late inbound plane 30%Air traffic & airport (NAS) 11%Severe weather 6%

All flights SEA → PIT · Connecting off AS 412? Check the risk

AS 412: PIT → SEA

Scheduled to leave Pittsburgh at 6:10 p.m. local time. Over the past year it arrived on time 67% of the time (308 flights), in line with other AS flights on the route at that hour (70%). Last seen in the data Aug 31, 2026.

Month by month

30%65%100%Sep 2025: 80% on time (30 flights)80SepOct 2025: 90% on time (31 flights)90OctNov 2025: 92% on time (26 flights)92NovDec 2025: 44% on time (27 flights)44DecJan 2026: too few flights (5 flights)JanFeb 2026: too few flights (12 flights)FebMar 2026: 50% on time (26 flights)50MarApr 2026: 73% on time (30 flights)73AprMay 2026: 71% on time (31 flights)71MayJun 2026: 57% on time (30 flights)57JunJul 2026: 63% on time (30 flights)63JulAug 2026: 50% on time (30 flights)50Aug

By day of week

DayFlightsOn time
Monday4676%
Tuesday4080%
Wednesday4670%
Thursday4657%
Friday4768%
Saturday3664%
Sunday4757%

Why it was late

Late inbound plane 44%Air traffic & airport (NAS) 31%Airline (crew, maintenance, ops) 20%Severe weather 4%Security 1%

All flights PIT → SEA · Connecting off AS 412? Check the risk

Questions

How often is AS 412 from SEA to PIT late?

Alaska Airlines 412 from Seattle, WA to Pittsburgh, PA arrived 15 or more minutes late, was diverted or was cancelled on 21% of 336 scheduled flights between September 2025 and August 2026. 0.9% were cancelled.

How often is AS 412 from PIT to SEA late?

Alaska Airlines 412 from Pittsburgh, PA to Seattle, WA arrived 15 or more minutes late, was diverted or was cancelled on 33% of 308 scheduled flights between September 2025 and August 2026. 1.0% 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.