How reliable is Kansas City International Airport?
Flights from MCI departed within 15 minutes of schedule in 82% of 285,686 flights in official BTS history — and weather is calmest in Sep. Here’s the full picture before you book.
Reliability score
on-time, cancellations & delays
Weather favorability
year-round climate
Origin-airport operations
What the departure punctuality at MCI looks like
On-time departures
across 285,686 flights
Source: BTS Airport Operations · data through 2026-06-25. Role-specific BTS departure history; advisory context, not a guarantee for any flight.
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Weather by month
When the weather works for you at Kansas City
A calm-weather score (0–100) for each month from decades of airport observations — how often conditions disrupt flying, not temperature. Higher is calmer.
Calmest month
Calmest flying weather of the year · 94/100 favorability
Roughest month
Most disruptive — low visibility & fog, snow · 75/100 favorability
The read on MCI
What the numbers say about flying through Kansas City International Airport
Across official performance history, flights from Kansas City left within 15 minutes of schedule about 82% of the time over 285,686 flights. That's a solid, better-than-average operational record. Pair it with a moderate cancellation rate of 1.7%. When a departure does run late, the typical delay is around 11 minutes.
On weather, Kansas City is an unusually calm-weather airport year-round. September is the calmest stretch for flying, scoring 94 out of 100 for favorable conditions, while January is the most disruptive at 75, driven mainly by low visibility & fog and snow. The seasonal swing is real but manageable; favor the calmer months when your dates are flexible.
None of this guarantees your specific flight — it’s the backdrop. To turn it into a booking, score real flights to Kansas City, read how we weigh it all in how the PlaneSane Score works, and brush up with how to pick a reliable flight and avoiding weather delays.
Common questions about MCI
- How reliable is Kansas City International Airport (MCI)?
- Flights from Kansas City left within 15 minutes of schedule roughly 82% of the time across 285,686 flights of official history — a solid, better-than-average operational record. The cancellation rate runs about 1.7%. It's advisory context, not a guarantee for any single flight.
- What is the best month to fly from MCI for good weather?
- September has the calmest flying weather at Kansas City International Airport. January is the most disruptive, mainly from low visibility & fog and snow.
Planning a trip through Kansas City?
Score real flights to and from MCI on reliability, weather, and connection safety — not just price.