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Route Reliability

Kansas City → Portland

MCI–PDX · 1,482 miles · Kansas City International Airport to Portland International Airport

95
Nerd Approved
WanderNerd Reliability Score
89%
Arrive within 15 minutes
4 min early
Average arrival delay
0.3%
Cancelled
371
Flights in the data

Data through May 2026.

Airlines on this route

  • Alaska Airlines91% on time · 338 flights
  • Southwest Airlines70% on time · 33 flights

Too little history on this route to call a winner. We rank airlines only after 100 flights each.

What the data says

The 12–3 PM departure wins.

MCI–PDX flights departing between 12–3 PM arrived on time 95% of the time, versus 50% between 6–9 PM.

Wednesday comes out ahead.

A small edge: 93% on time on Wednesdays against 86% on Saturdays.

It basically never cancels.

Out of 371 scheduled flights, only 0.3% were cancelled.

Recent months have been rougher.

MCI–PDX flights arrived on time 89% of the time over the last three months in the data, compared with 97% in the three months before that.

Flights on this route

The breakdown

On-time by weekday
  • Mon88%(51 flights)
  • Tue92%(49 flights)
  • Wed93%(42 flights)
  • Thu90%(51 flights)
  • Fri86%(51 flights)
  • Sat86%(57 flights)
  • Sun90%(68 flights)
On-time by departure window
  • 12–3 PM95%(19 flights)
  • 3–6 PM90%(340 flights)
  • 6–9 PM50%(10 flights)
On-time trend by month
90%
May

Jun 84% → May 90% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202584%38
July 202587%39
August 202593%40
September 202582%38
October 202584%31
November 202593%28
December 202596%25
January 202696%22
February 2026100%20
March 202693%27
April 202683%30
May 202690%31

Keep nerding

Based on 371 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.