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Route Reliability

Kansas City → San Diego

MCI–SAN · 1,334 miles · Kansas City International Airport to San Diego International Airport

87
Pretty Reliable
WanderNerd Reliability Score
80%
Arrive within 15 minutes
5 min
Average arrival delay
0.3%
Cancelled
395
Flights in the data

Data through May 2026.

Southwest Airlines is the only airline in this data on this route, arriving on time 80% of the time across 395 flights. No comparison to make.

What the data says

Morning flights do better here.

MCI–SAN flights departing between 9 AM–12 PM arrived on time 83% of the time, versus 44% between 6–9 PM.

Friday is doing you no favors.

MCI–SAN flights arrived on time 87% of the time on Tuesdays and just 69% on Fridays. That gap is worth planning around.

It basically never cancels.

Out of 395 scheduled flights, only 0.3% were cancelled.

Flights on this route

The breakdown

On-time by weekday
  • Mon83%(52 flights)
  • Tue87%(52 flights)
  • Wed83%(52 flights)
  • Thu85%(52 flights)
  • Fri69%(52 flights)
  • Sat77%(66 flights)
  • Sun77%(68 flights)
On-time by departure window
  • 3–6 AM—(9 flights)
  • 6–9 AM—(5 flights)
  • 9 AM–12 PM83%(119 flights)
  • 12–3 PM83%(191 flights)
  • 3–6 PM70%(54 flights)
  • 6–9 PM44%(16 flights)
On-time trend by month
71%
May

Jun 69% → May 71% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202569%39
July 202585%39
August 202588%33
September 202587%30
October 202571%31
November 202585%33
December 202573%33
January 202684%32
February 202679%28
March 202691%34
April 202674%31
May 202671%31

Keep nerding

Based on 395 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.