ON TIMEBOARD
PDX Portland / MCI Kansas City

PDX → MCI on time

Portland (Portland, OR) to Kansas City (Kansas City, MO). Every scheduled flight, September 2025 to August 2026.

On time
81%
arrived < 15 min late
Cancelled
0.3%
372 flights
Typical arrival
−6 min
median vs schedule
When late
+47 min
average delay
Flights / day
1
2 airlines

81% of flights from Portland to Kansas City arrived on time over the past 12 months. That is about the typical U.S. route. The 10 a.m. departures ran on time 82% of the time; the 11 a.m. ones 80%. 4% of flights arrived more than an hour late or not at all.

How late?

The on-time rate treats a flight 20 minutes late the same as one 5 hours late. Here's the split for PDX → MCI: when a flight was late, it was under 45 minutes late 75% of the time. About 1 in 29 flights landed an hour or more late, and 1 in 93 three hours or more; 0.3% were cancelled outright.

Share of all 372 scheduled flights, past 12 months, by arrival time against schedule.

By airline

AirlineFlightsOn timeCancelledTypical arrival1h+ lateAvg when lateOperated by
Alaska Airlines33883%0.3%−7 min3.6%+50 minAlaska Airlines 99%, Horizon Air 1%
Southwest Airlines34—————Southwest Airlines

Airline = the name on the ticket. Regional flights (e.g. "Delta Connection") count under the ticketing airline, and the operator is listed.

Best time of day to fly

On-time rate by scheduled departure hour (local time at PDX). Delays build through the day as late planes knock on, so early flights usually do best.

40%70%100%7 a.m. departures: too few flights (24 flights)7a8 a.m. departures: too few flights8a9 a.m. departures: too few flights (29 flights)9a10 a.m. departures: 82% on time (168 flights)8210a11 a.m. departures: 80% on time (137 flights)8011a
PDX → MCI, share of flights arriving on time, by departure hour. Hours with under 100 flights are greyed out.
82%+ on time76–82%68–76%under 68%too few flights

By airline and hour

DepartsAlaska Airlines
10 a.m.81%
11 a.m.80%

By month

Each calendar month pooled over 2023–2026. Best: August (88%). Worst: July (80%).

40%70%100%Jan: too few flights (43 flights)JanFeb: too few flights (26 flights)FebMar: too few flights (40 flights)MarApr: too few flights (60 flights)AprMay: too few flights (78 flights)MayJun: 84% on time (114 flights)84JunJul: 80% on time (117 flights)80JulAug: 88% on time (119 flights)88AugSep: too few flights (99 flights)SepOct: too few flights (62 flights)OctNov: too few flights (55 flights)NovDec: too few flights (56 flights)Dec

By day of week

DayFlightsOn timeCancelled
Monday53——
Tuesday49——
Wednesday42——
Thursday51——
Friday51——
Saturday57——
Sunday69——

Why flights were late

Share of delay minutes on flights 15+ minutes late, as reported to BTS by the airlines.

Late inbound plane 46%Airline (crew, maintenance, ops) 39%Air traffic & airport (NAS) 15%

Cancellations: airline 1

Month by month

Not enough months with data to draw a trend.

Questions

How often are flights from PDX to MCI on time?

81% of 372 scheduled flights from Portland, OR to Kansas City, MO arrived within 15 minutes of schedule between September 2025 and August 2026. 0.3% were cancelled.

What is the best time of day to fly PDX to MCI?

Flights scheduled to leave at 10 a.m. were the most reliable (82% on time). The 11 a.m. departures were the least (80%).

What month has the most delays from PDX to MCI?

July (80% on time). The best month is August (88%), over 2023–2026.

Related

Domestic flights by the airlines that report to the U.S. DOT, plus their regional partners. "On time" means arriving less than 15 minutes after schedule; cancelled and diverted flights count as not on time. Past performance is a guide, not a forecast. Method.