PlainFlights

MCI vs STL - Airport Comparison

Select two airports to compare on-time performance, delays, cancellations, and top routes using U.S. Department of Transportation Bureau of Transportation Statistics (BTS) data (2020–2025) across all 50 states. See our methodology for how metrics are computed.

Airport A
MCI

Kansas City, MO

Kansas City, Missouri

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Airport B
STL

St. Louis, MO

St. Louis, Missouri

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Key Performance Metrics

BTS on-time performance data, 2020–2025 cumulative.

Metric MCI STL
On-Time Rate (higher is better) 82.0% 81.3%
Avg Delay (lower is better) 70.0 min 66.7 min
Delay Rate (lower is better) 18.0% 18.7%
Cancellation Rate (lower is better) 1.22% 1.18%
Total Flights 524,365 687,272
Delayed Flights 94,477 128,602
Cancelled Flights 6,385 8,116
Top Delay Cause Late Aircraft Late Aircraft

✓ / ▲ indicates the more favorable value. Data: BTS On-Time Performance, 2020–2025.

Delay Cause Breakdown

MCI - Kansas City, MO

Late Aircraft 42.6%
Carrier 30.3%
NAS 20.8%
Weather 6.1%
Security 0.1%

STL - St. Louis, MO

Late Aircraft 44.1%
Carrier 33.9%
NAS 17.9%
Weather 4.0%
Security 0.1%

Top Routes

Top routes from MCI

Route Flights On-Time
DEN → MCI
Kansas City
22,306 77.5%
MCI → DEN
Denver
22,302 80.4%
ATL → MCI
Kansas City
17,753 83.6%
MCI → ATL
Atlanta
17,667 88.6%
ORD → MCI
Kansas City
17,519 79.1%
MCI → ORD
Chicago
17,516 83.9%

Top routes from STL

Route Flights On-Time
STL → DEN
Denver
20,999 79.9%
DEN → STL
St. Louis
20,926 77.9%
STL → ATL
Atlanta
19,051 86.9%
ATL → STL
St. Louis
19,027 84.3%
LGA → STL
St. Louis
18,657 83.4%
STL → LGA
New York
18,647 83.5%

Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data (2020–2025) Bureau of Transportation Statistics (BTS), On-Time Performance Data (2020–2025) On-time rates exclude cancelled and diverted flights. PlainFlights is not affiliated with BTS or the DOT

Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. This tool queries live on-time, delay, and cancellation figures for the two selected airports from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.