Denver International ⇄ Louisville Muhammad Ali International DEN–SDF
Airlines flew 3,935 flights between Denver International DEN in Denver, CO and Louisville Muhammad Ali International SDF in Louisville, KY in the twelve months to July 2026, both directions together: 242,688 passengers in 313,711 seats, 77% of them filled, and 77,971,144 pounds of freight. 1,024 miles, about 124 minutes in the air, on 5 airlines: United Parcel Service (1,759), United Air Lines Inc. (1,449), Southwest Airlines Co. (724), SkyWest Airlines Inc. (2) and 1 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 | 312 |
| 2/25 | 270 |
| 3/25 | 268 |
| 4/25 | 319 |
| 5/25 | 336 |
| 6/25 | 322 |
| 7/25 | 340 |
| 8/25 | 334 |
| 9/25 | 323 |
| 10/25 | 342 |
| 11/25 | 307 |
| 12/25 | 369 |
| 1/26 | 323 |
| 2/26 | 307 |
| 3/26 | 335 |
| 4/26 | 333 |
| 5/26 | 328 |
| 6/26 | 313 |
| 7/26 | 321 |
Passengers by month
By month, as a table
| passengers | |
|---|---|
| 1/25 | 16,276 |
| 2/25 | 14,865 |
| 3/25 | 13,958 |
| 4/25 | 18,614 |
| 5/25 | 21,673 |
| 6/25 | 21,454 |
| 7/25 | 22,816 |
| 8/25 | 19,780 |
| 9/25 | 22,495 |
| 10/25 | 22,737 |
| 11/25 | 17,512 |
| 12/25 | 19,693 |
| 1/26 | 16,225 |
| 2/26 | 18,168 |
| 3/26 | 19,875 |
| 4/26 | 20,082 |
| 5/26 | 21,177 |
| 6/26 | 22,124 |
| 7/26 | 22,820 |
The airlines twelve months, both directions
| Airline | Flights | Passengers | Seats filled | Service |
|---|---|---|---|---|
| United Parcel Service 5X | 1,759 | 0 | scheduled cargo service | |
| United Air Lines Inc. UA | 1,449 | 156,057 | 79% | scheduled passenger service |
| Southwest Airlines Co. WN | 724 | 86,445 | 74% | scheduled passenger service |
| SkyWest Airlines Inc. OO | 2 | 0 | 0% | scheduled passenger service |
| American Airlines Inc. AA | 1 | 186 | 98% | scheduled passenger service |
The aircraft as the airlines report their types
| Aircraft | Flights | Seats a flight | Passengers |
|---|---|---|---|
| Boeing 767-300/300ER | 1,154 | 0 | 0 |
| Airbus Industrie A319 | 883 | 126 | 89,388 |
| Airbus Industrie A320-100/200 | 521 | 150 | 61,625 |
| Airbus Industrie A300-600/R/CF/RCF | 362 | 0 | 0 |
| Boeing 737-700/700LR/Max 7 | 297 | 140 | 32,077 |
| Boeing B737 Max 800 | 237 | 175 | 30,219 |
| Boeing 737-800 | 227 | 174 | 28,234 |
| Boeing 757-200 | 173 | 0 | 0 |
| McDonnell Douglas MD-11 | 68 | 0 | 0 |
| Boeing 737-900ER | 7 | 179 | 770 |
| Airbus Industrie A321-200n | 2 | 195 | 375 |
| Boeing 747-400 | 2 | 0 | 0 |
| Bombardier CRJ550 | 1 | 50 | 0 |
| Embraer ERJ-175 | 1 | 76 | 0 |
DEN → SDF this direction alone · flown January 2025 to July 2026
1,809 flights of 1,813 scheduled, 121,895 passengers in 159,262 seats, 29,113,644 pounds of freight, 19,291,682 pounds of mail. United Air Lines Inc. 730; United Parcel Service 714; Southwest Airlines Co. 362; SkyWest Airlines Inc. 2; American Airlines Inc. 1.
SDF → DEN this direction alone · flown January 2025 to July 2026
2,126 flights of 2,142 scheduled, 120,793 passengers in 154,449 seats, 48,857,500 pounds of freight, 19,687,840 pounds of mail. United Parcel Service 1,045; United Air Lines Inc. 719; Southwest Airlines Co. 362.
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: Denver International DEN and Louisville Muhammad Ali International SDF; all routes.