ON TIMEBOARD
Alaska Airlines / MCI → SEA

AS 418 on time

Alaska Airlines 418: Kansas City to Seattle at 2:17 p.m.; Seattle to Kansas City at 7:48 a.m. (past 12 months). Figures below the title are for MCI → SEA, its busiest leg

On time
82%
308 flights · likely 78–86%
Cancelled
0.3%
of scheduled flights
Typical arrival
−6 min
median vs schedule
When late
+55 min
average delay
Similar flights
91%
AS, same route & hour

About 1 in 6 AS 418 flights from Kansas City arrived 15+ minutes late, diverted or cancelled over the past year (18%); 0.3% were cancelled. The typical flight landed 6 minutes early.

AS 418: MCI → SEA

Scheduled to leave Kansas City at 2:17 p.m. local time. Over the past year it arrived on time 82% of the time (308 flights), worse than other AS flights on the route at that hour (91%). Last seen in the data Aug 31, 2026.

Month by month

40%70%100%Sep 2025: 70% on time (30 flights)70SepOct 2025: 64% on time (28 flights)64OctNov 2025: 60% on time (20 flights)60NovDec 2025: 57% on time (23 flights)57DecJan 2026: 87% on time (31 flights)87JanFeb 2026: 96% on time (28 flights)96FebMar 2026: 85% on time (27 flights)85MarApr 2026: 96% on time (27 flights)96AprMay 2026: too few flights (12 flights)MayJun 2026: 100% on time (20 flights)100JunJul 2026: 97% on time (31 flights)97JulAug 2026: 81% on time (31 flights)81Aug

By day of week

DayFlightsOn time
Monday4982%
Tuesday4193%
Wednesday4085%
Thursday4783%
Friday4768%
Saturday3692%
Sunday4879%

Why it was late

Late inbound plane 52%Air traffic & airport (NAS) 19%Airline (crew, maintenance, ops) 17%Severe weather 12%

All flights MCI → SEA · Connecting off AS 418? Check the risk

AS 418: SEA → MCI

Scheduled to leave Seattle at 7:48 a.m. local time. Over the past year it arrived on time 88% of the time (299 flights), worse than other AS flights on the route at that hour (92%). Last seen in the data Aug 18, 2026.

Month by month

40%70%100%Sep 2025: 77% on time (30 flights)77SepOct 2025: 74% on time (27 flights)74OctNov 2025: 80% on time (30 flights)80NovDec 2025: 87% on time (23 flights)87DecJan 2026: 89% on time (27 flights)89JanFeb 2026: 96% on time (24 flights)96FebMar 2026: 89% on time (27 flights)89MarApr 2026: 97% on time (30 flights)97AprMay 2026: too few flights (12 flights)MayJun 2026: 100% on time (20 flights)100JunJul 2026: 94% on time (31 flights)94JulAug 2026: 89% on time (18 flights)89Aug

By day of week

DayFlightsOn time
Monday4789%
Tuesday4495%
Wednesday4290%
Thursday4687%
Friday4680%
Saturday2889%
Sunday4687%

Why it was late

Airline (crew, maintenance, ops) 58%Late inbound plane 21%Air traffic & airport (NAS) 19%Severe weather 2%

All flights SEA → MCI · Connecting off AS 418? Check the risk

Questions

How often is AS 418 from MCI to SEA late?

Alaska Airlines 418 from Kansas City, MO to Seattle, WA arrived 15 or more minutes late, was diverted or was cancelled on 18% of 308 scheduled flights between September 2025 and August 2026. 0.3% were cancelled.

How often is AS 418 from SEA to MCI late?

Alaska Airlines 418 from Seattle, WA to Kansas City, MO arrived 15 or more minutes late, was diverted or was cancelled on 12% of 299 scheduled flights between September 2025 and August 2026. 0.3% 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.