Louisville
SDF · KSDFLouisville Muhammad Ali International Airport
Passengers a year
4.5M
#69 busiest in the U.S.
40
nonstop destinations
25
airlines
74
departures a day
77.7%
arrivals on time
2.3%
flights cancelled
75.8%
load factor
Airlines
Southwest Airlines is the largest carrier at Louisville, with 26% of all passengers. 25 airlines fly from here.
Share of passengers · each carrier as a slice of the whole airport
Southwest Airlines holds 26% of the airport — the 73rd most concentrated of 79 small hubs. The nearest comparison is EUG at 28%.
| Airline | Share | Passengers | Seats YoY | ||
|---|---|---|---|---|---|
WN Southwest75% full | 26.3% | 1.2M | 12 | 76.3% | +6.2% |
AA | 25.7% | 1.1M | 8 | 67.7% | -2.4% |
DL | 23.2% | 1M | 5 | 84.1% | +5.3% |
UA | 15.2% | 678.9K | 5 | — | +4.8% |
G4 Allegiant85% full | 5.2% | 231.4K | 9 | 70.2% | +10.3% |
+Other airlines | 4.3% | 192.4K | — | — | — |
Share, passengers and destinations count each airline’s own flights plus the regional flying sold under its brand. On-time covers the airline's own aircraft only — regional affiliates report to the government separately. Seats year on year compares the latest twelve months against the twelve before them.
Destinations
40 nonstop destinations from Louisville, all domestic.
100% domestic · 0% international · by departing passengers
Top domestic destinations
Delta Air Lines
183.3K183,300 departing · 78% full
American Airlines
United Airlines · American Airlines
American Airlines
United Airlines · Southwest Airlines
Southwest Airlines · Spirit Airlines
Southwest Airlines
Southwest Airlines
Delta Air Lines
Delta Air Lines · American Airlines
All nonstop destinations
40 nonstop · 7 airlines · 40 domestic / 0 intl
American Eagle · operated by Envoy Air, PSA Airlines, Piedmont Airlines, Republic Airways, SkyWest Airlines
Aircraft
By share of departures at Louisville.
Body class · share of departures
- Regional
8,676 departures · 74% full
32.1%
- Regional
2,937 departures · 78% full
10.9%
- Narrowbody
2,613 departures · 78% full
9.7%
- Narrowbody
2,382 departures · 71% full
8.8%
- Narrowbody
1,669 departures · 74% full
6.2%
- Narrowbody
1,564 departures · 82% full
5.8%
- Narrowbody
1,304 departures · 78% full
4.8%
- Narrowbody
1,230 departures · 86% full
4.6%
- Narrowbody
1,147 departures · 75% full
4.3%
Bombardier CRJ-550
858 departures · 79% full
3.2%
When Louisville is busiest
Departures by month over the trailing year. Bars scale to the busiest month.
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Apr
May
Jun
Jul
Departures a month · peak May 2026
Annual passengers since 1990
Total passengers, arriving and departing, in every year on record.
Passengers a year
Every year
- 1990
- 2,089,857
- 1991
- 1,945,373
- 1992
- 2,083,181
- 1993
- 2,390,258
- 1994
- 3,356,498
- 1995
- 3,665,186
- 1996
- 3,750,498
- 1997
- 3,820,732
- 1998
- 3,730,114
- 1999
- 3,783,140
- 2000
- 3,924,131
- 2001
- 3,715,147
- 2002
- 3,511,392
- 2003
- 3,498,099
- 2004
- 3,606,167
- 2005
- 3,886,791
- 2006
- 3,783,078
- 2007
- 3,943,931
- 2008
- 3,795,236
- 2009
- 3,314,728
- 2010
- 3,368,781
- 2011
- 3,410,318
- 2012
- 3,348,708
- 2013
- 3,401,918
- 2014
- 3,327,867
- 2015
- 3,329,670
- 2016
- 3,307,125
- 2017
- 3,430,758
- 2018
- 3,797,967
- 2019
- 4,149,461
- 2020
- 1,599,228
- 2021
- 3,126,201
- 2022
- 3,858,973
- 2023
- 4,630,508
- 2024
- 4,776,870
- 2025
- 4,525,329
- 2026
- 2,583,629 so far
Arriving on time
Of every 100 flights landing at Louisville, 78 touch down within 15 minutes of schedule, 20 arrive late, and 2 are cancelled.
Every 100 arrivals
16 min
average delay
541
flights cancelled
22.6K
arrivals measured
What holds flights up
Share of delay minutes
Most reliable here
Envoy Air 86.4%
Least reliable here
American Airlines 67.7%
Among US airports
#69
On time, month by month
A
S
O
N
D
J
F
M
A
M
J
J
Darker is better · 70%–86.5%
The weak spot is December 2025, when 70% of arrivals landed on time — 7.7 points below the year. The strongest was September 2025 at 86.5%.
Frequently asked
How busy is Louisville Muhammad Ali International Airport (SDF)?
Louisville Muhammad Ali International Airport handled about 4.5M passengers over the trailing 12 months, ranking #69 among U.S. airports by passengers, with roughly 74 departures a day.
Which airline is the largest at Louisville Muhammad Ali International Airport (SDF)?
Southwest Airlines is the largest carrier at Louisville (SDF), flying about 26% of its passengers. 25 airlines serve Louisville in total.
How many places can you fly nonstop from Louisville Muhammad Ali International Airport (SDF)?
Louisville (SDF) has 40 nonstop destinations, all domestic.
How often do flights arrive on time at Louisville Muhammad Ali International Airport (SDF)?
About 77.7% of flights arriving at Louisville (SDF) touch down within 15 minutes of schedule, per US DOT figures. About 2.3% are cancelled.
What aircraft flies most from Louisville Muhammad Ali International Airport (SDF)?
The Embraer E175 flew the largest share of departures from Louisville (SDF), about 32% of the total.
Departing counts passengers leaving Louisville. Data: traffic August 2025 – July 2026, on-time August 2025 – July 2026. Source: US DOT Bureau of Transportation Statistics (T-100 Segment, On-Time Performance).