ON TIMEBOARD
MCI Kansas City / PDX Portland

MCI → PDX on time

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

On time
85%
arrived < 15 min late
Cancelled
0.5%
372 flights
Typical arrival
−11 min
median vs schedule
When late
+62 min
average delay
Flights / day
1
2 airlines

85% of flights from Kansas City to Portland arrived on time over the past 12 months. That is better than the typical U.S. route. 6% 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 MCI → PDX: when a flight was late, it was under 45 minutes late 59% of the time. About 1 in 21 flights landed an hour or more late, and 1 in 124 three hours or more; 0.5% 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 Airlines33888%0.6%−14 min4.7%+69 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 MCI). Delays build through the day as late planes knock on, so early flights usually do best.

40%70%100%3 p.m. departures: too few flights (33 flights)3p4 p.m. departures: too few flights (92 flights)4p5 p.m. departures: 89% on time (201 flights)895p
MCI → PDX, 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
5 p.m.89%

By month

Each calendar month pooled over 2023–2026. Best: July (85%). Worst: June (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: 80% on time (114 flights)80JunJul: 85% on time (117 flights)85JulAug: 84% on time (119 flights)84AugSep: 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 66%Airline (crew, maintenance, ops) 29%Air traffic & airport (NAS) 4%Severe weather 1%

Cancellations: airline 2

Month by month

Not enough months with data to draw a trend.

Questions

How often are flights from MCI to PDX on time?

85% of 372 scheduled flights from Kansas City, MO to Portland, OR arrived within 15 minutes of schedule between September 2025 and August 2026. 0.5% were cancelled.

What month has the most delays from MCI to PDX?

June (80% on time). The best month is July (85%), 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.