MCI to SAN flight delays
Kansas City, MO (MCI) San Diego, CA (SAN) · 1,334 miles
390 flights · January 2025 – August 2026 · US Bureau of Transportation Statistics
77.38%
Arrived on time
Within 15 minutes of schedule
0.26%
Cancelled
Share of scheduled flights
42 min
When late, late by
Average across delayed arrivals
11 min
Delay per flight
Averaged over every flight flown
What the record says about this route
The season swings this route hard. In March it ran 44.1 points more punctual than in June — a difference bigger than the one between the best and worst airlines on most routes. If the date is flexible, it is worth more than the carrier.
Only Southwest Airlines flies this route in the published record, so there is no choice to weigh — the route's figures and the airline's are the same figures.
This is a thin route — 390 flights across the whole period. On a route this infrequent a cancellation is far more costly than the rate suggests, because the next departure may not be the same day.
The Kansas City to San Diego route sits close to the middle of the record — neither notably punctual nor notably late.
Which airline should you fly on this route?
Over January 2025 – August 2026, Southwest Airlines arrived on time most often on MCI to SAN. Flights ran closest to schedule in March and worst in June.
Every airline on MCI to SAN
Ranked by how many flights each one operated. A carrier with fewer than 100 flights in the period is listed but not graded.
| Airline | Flights | On time | Cancelled | Avg delay | Grade |
|---|---|---|---|---|---|
| Southwest Airlines | 390 | 77.38% | 0.26% | 42 min | C |
Month by month
Share of flights that arrived within 15 minutes of schedule, by month flown.
The return leg
SAN to MCI San Diego back to Kansas City 73.25% on time DOther routes from Kansas City
Common questions
Are flights from Kansas City to San Diego usually delayed?
77.38% of flights on the MCI to SAN route arrived within 15 minutes of schedule, so roughly 2 in every ten arrived late. That is about the same as the average route in this record.
Which airlines fly from Kansas City to San Diego?
Only Southwest Airlines appears in the published record on this route, with 390 flights and 77.38% arriving on time.
How often are MCI to SAN flights cancelled?
0.26% of scheduled flights did not operate — about 3 in every thousand. That is in the normal range.
What is the best month to fly Kansas City to San Diego?
March, when 91.2% of flights arrived on time. The worst was June at 47.1%.
When MCI to SAN flights are late, how late are they?
About 42 minutes on average across the flights that arrived more than 15 minutes behind schedule.
What these figures do and do not tell you
Everything on this page is counted from the flights that actually operated on MCI to SAN during January 2025 – August 2026, as reported by the airlines to the US Bureau of Transportation Statistics. "On time" is the federal definition: arriving at the gate within 15 minutes of the scheduled time.
A route's record is a description of the past, not a forecast. Weather, air traffic control and the aircraft's earlier flights that day drive most delays, and none of them are predictable from a historical rate. What the record does tell you is whether this route runs late more often than others, and which carrier on it has the better history — which is the part you can actually act on when you book.
Cancellations are counted separately from delays because they are a different problem for a traveller: a late flight still gets you there. How the grade is calculated →