Washington (DCA) to Louisville (SDF)
Flight time
≈ 1h 45m
Bearing
267° W
Washington (DCA) to Louisville (SDF) is 472 miles (760 km) as the crow flies — the great-circle baseline most distance-based mileage programs credit.
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What actually flies DCA–SDF
US DOT T-100 · filed dataIn April 2026, PSA Airlines operated the most departures, one of 5 carriers flying nonstop DCA–SDF; the Embraer E175 was the most common aircraft at 39% of departures; flights ran 74% full.
Departures
183
April 2026
Seats
13,947
both directions
Passengers
10,288
both directions
Load factor
73.8%
passengers ÷ seats
Who flies DCA–SDF?
PSA Airlines operated the most nonstop DCA–SDF departures in April 2026 (104), one of 5 carriers on the route.
- OH
PSA Airlines
104 departures · 7,396 seats
Share of departures56.8%78.0%
Load
- YX
Republic Airways
70 departures · 5,320 seats
Share of departures38.3%67.7%
Load
- AA
American Airlines
6 departures · 904 seats
Share of departures3.3%75.3%
Load
- MQ
Envoy Air
2 departures · 152 seats
Share of departures1.1%45.4%
Load
- WN
Southwest Airlines
1 departures · 175 seats
Share of departures0.5%98.3%
Load
What plane flies DCA–SDF?
In April 2026, the Embraer E175 flew 39% of DCA–SDF departures — more than any other aircraft type.
- Embraer E175
72 departures · 67.1% load
39.3% - Bombardier CRJ-900
58 departures · 76.0% load
31.7% - Bombardier CRJ-700
46 departures · 80.8% load
25.1% - Airbus A319
4 departures · 60.9% load
2.2% - Airbus A321neo
2 departures · 94.1% load
1.1% - Boeing 737 MAX 8
1 departures · 98.3% load
0.5%
How has DCA–SDF traffic changed?
Nonstop DCA–SDF departures rose from 172 in May 2025 to 183 in April 2026.
Monthly nonstop DCA–SDF traffic, trailing 12 months through April 2026. Bars scale to the busiest month; months with no filed service show as zero.
May 2025
172 departures · 9,942 passengers
77.5%
Load
June 2025
151 departures · 8,779 passengers
83.5%
Load
July 2025
145 departures · 8,360 passengers
82.8%
Load
August 2025
169 departures · 8,890 passengers
75.3%
Load
September 2025
183 departures · 10,707 passengers
82.1%
Load
October 2025
186 departures · 10,976 passengers
82.1%
Load
November 2025
158 departures · 8,512 passengers
74.9%
Load
December 2025
117 departures · 6,195 passengers
71.9%
Load
January 2026
145 departures · 6,198 passengers
59.2%
Load
February 2026
156 departures · 8,439 passengers
72.4%
Load
March 2026
177 departures · 10,572 passengers
77.8%
Load
April 2026
183 departures · 10,288 passengers
73.8%
Load
By direction
The DOT files each direction separately — they rarely match.
DCA → SDF
75.7% full
93 departures · 5,402 passengers
SDF → DCA
71.8% full
90 departures · 4,886 passengers
Nonstop DCA–SDF traffic has been filed with the US DOT since 2025.
Source: US DOT BTS Form 41 T-100 Segment (All Carriers). Data through April 2026; filings from 2025. Public domain (US Government work). The DOT publishes roughly three months in arrears.
The airports
Louisville
US
Louisville Muhammad Ali International Airport
Coordinates
38.17°N, 85.74°W
Hemisphere
N · W
Frequently asked
How far is Washington (DCA) from Louisville (SDF)?
DCA to SDF is 472 miles (760 km / 410 nautical miles) measured great-circle — the shortest path over the surface of the Earth.
How long is the flight from DCA to SDF?
A nonstop covers the 472-mile great-circle distance in roughly 1h 45m of block time, before winds. Actual schedules vary a few percent by direction and aircraft.
What plane flies DCA–SDF?
In April 2026, the Embraer E175 flew the largest share of departures (39.3%), followed by the Bombardier CRJ-900 (31.7%).
What mileage do I earn flying DCA–SDF?
Distance-based programs credit off the 472-mile great-circle figure, then apply your fare-class earning rate. Revenue-based programs credit off the fare instead.
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