Kansas City International ⇄ St. Louis Lambert International MCI–STL
Airlines flew 2,118 flights between Kansas City International MCI in Kansas City, MO and St. Louis Lambert International STL in St Louis, MO in the twelve months to July 2026, both directions together: 240,822 passengers in 330,865 seats, 73% of them filled, and 398,029 pounds of freight. 237 miles, about 40 minutes in the air, on 12 airlines: Southwest Airlines Co. (2,074), Sun Country Airlines d/b/a MN Airlines (10), Delta Air Lines Inc. (10), American Airlines Inc. (9) and 8 more. Planning to fly it yourself? The weather and winds along this route right now.
Flights by month both directions
By month, as a table
| flights | |
|---|---|
| 1/25 | 138 |
| 2/25 | 133 |
| 3/25 | 172 |
| 4/25 | 185 |
| 5/25 | 176 |
| 6/25 | 190 |
| 7/25 | 193 |
| 8/25 | 190 |
| 9/25 | 189 |
| 10/25 | 179 |
| 11/25 | 164 |
| 12/25 | 175 |
| 1/26 | 140 |
| 2/26 | 142 |
| 3/26 | 177 |
| 4/26 | 187 |
| 5/26 | 192 |
| 6/26 | 192 |
| 7/26 | 191 |
Passengers by month
By month, as a table
| passengers | |
|---|---|
| 1/25 | 13,275 |
| 2/25 | 12,291 |
| 3/25 | 19,156 |
| 4/25 | 19,393 |
| 5/25 | 21,303 |
| 6/25 | 22,858 |
| 7/25 | 22,750 |
| 8/25 | 20,699 |
| 9/25 | 21,520 |
| 10/25 | 22,088 |
| 11/25 | 17,422 |
| 12/25 | 20,504 |
| 1/26 | 15,271 |
| 2/26 | 15,733 |
| 3/26 | 19,288 |
| 4/26 | 20,536 |
| 5/26 | 22,419 |
| 6/26 | 23,529 |
| 7/26 | 21,813 |
The airlines twelve months, both directions
| Airline | Flights | Passengers | Seats filled | Service |
|---|---|---|---|---|
| Southwest Airlines Co. WN | 2,074 | 238,127 | 73% | scheduled passenger service |
| Sun Country Airlines d/b/a MN Airlines SY | 10 | 0 | 0% | charter cargo service, charter passenger service |
| Delta Air Lines Inc. DL | 10 | 935 | 68% | scheduled passenger service |
| American Airlines Inc. AA | 9 | 1,259 | 90% | scheduled passenger service |
| Eastern Air Express, LLC (EAX) 37Q | 4 | 0 | 0% | charter passenger service |
| United Parcel Service 5X | 2 | 0 | scheduled cargo service | |
| SkyWest Airlines Inc. OO | 2 | 70 | 46% | scheduled passenger service |
| Republic Airline YX | 2 | 14 | 9% | scheduled passenger service |
| Spirit Air Lines NK | 2 | 259 | 74% | scheduled passenger service |
| Alaska Airlines Inc. AS | 1 | 67 | 42% | scheduled passenger service |
| Endeavor Air Inc. 9E | 1 | 33 | 43% | scheduled passenger service |
| PSA Airlines Inc. OH | 1 | 58 | 76% | scheduled passenger service |
The aircraft as the airlines report their types
| Aircraft | Flights | Seats a flight | Passengers |
|---|---|---|---|
| Boeing 737-700/700LR/Max 7 | 1,059 | 140 | 112,333 |
| Boeing B737 Max 800 | 632 | 175 | 78,197 |
| Boeing 737-800 | 398 | 173 | 48,277 |
| Boeing 737-300 | 4 | 144 | 0 |
| Airbus Industrie A319 | 4 | 130 | 415 |
| Airbus Industrie A320-100/200 | 3 | 150 | 403 |
| Embraer ERJ-175 | 3 | 76 | 14 |
| Canadair CRJ 900 | 3 | 76 | 161 |
| Boeing 737-900ER | 3 | 178 | 417 |
| Boeing 717-200 | 2 | 110 | 85 |
| A200-100 BD-500-1A10 | 2 | 109 | 174 |
| Airbus Industrie A320-200n | 2 | 176 | 259 |
| Boeing 767-300/300ER | 1 | 0 | 0 |
| Airbus Industrie A300-600/R/CF/RCF | 1 | 0 | 0 |
| A220-300 BD-500-1A11 | 1 | 130 | 87 |
MCI → STL this direction alone · flown January 2025 to July 2026
1,061 flights of 1,031 scheduled, 120,862 passengers in 168,463 seats, 184,207 pounds of freight. Southwest Airlines Co. 1,039; American Airlines Inc. 6; Sun Country Airlines d/b/a MN Airlines 4; Eastern Air Express, LLC (EAX) 3; Delta Air Lines Inc. 3; United Parcel Service 2; SkyWest Airlines Inc. 2; Alaska Airlines Inc. 1; Republic Airline 1.
STL → MCI this direction alone · flown January 2025 to July 2026
1,057 flights of 1,027 scheduled, 119,960 passengers in 162,402 seats, 213,822 pounds of freight. Southwest Airlines Co. 1,035; Delta Air Lines Inc. 7; Sun Country Airlines d/b/a MN Airlines 6; American Airlines Inc. 3; Spirit Air Lines 2; Eastern Air Express, LLC (EAX) 1; Endeavor Air Inc. 1; PSA Airlines Inc. 1; Republic Airline 1.
Source: the Bureau of Transportation Statistics' T-100 Segment table (all carriers). A flight is one departure performed on this segment; seats and passengers are the airlines' own monthly reports; "seats filled" is passengers divided by seats. The miles are the DOT's great-circle distance. Both ends: Kansas City International MCI and St. Louis Lambert International STL; all routes.