Washington to Louisville (IAD-SDF): nonstop flights and who flies them

United Airlines flies nonstop between Washington (IAD) and Louisville (SDF), roughly 30 times a week. With United Airlines running most of the schedule, the shape of a week is predictable, which makes an open premium seat on a given date easy to spot and quick to lose. United Airlines fly the route nonstop in 2LNR's schedule data; the timetable and the reverse direction are below.

Schedule last confirmed . Departure times come from 2LNR's schedule data; confirm with the airline before you book.

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30
Nonstop flights a week
451 mi
Nonstop distance
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Washington to Louisville flight schedule

Scheduled nonstop departures for IAD to SDF, last checked against our schedule feed on September 6, 2026. Airlines retime and cancel flights, so confirm with the airline before you book.

Schedule data dated .

Scheduled nonstop departures from Washington (IAD) to Louisville (SDF)
Date Flight Airline Departs IAD Arrives SDF Duration Aircraft
UA 3525United Airlines08:3510:181h 43mE7W
UA 3980United Airlines12:5014:371h 47mE7W
UA 3538United Airlines17:2519:181h 53mE7W
UA 3570United Airlines18:2520:091h 44mE7W
UA 3525United Airlines08:3510:181h 43mE7W
UA 3980United Airlines12:5014:371h 47mE7W
UA 3538United Airlines17:2519:181h 53mE7W
UA 3570United Airlines18:2520:091h 44mE7W
UA 3525United Airlines08:3510:181h 43mE7W
UA 3980United Airlines12:5014:371h 47mE7W
UA 3538United Airlines17:2519:181h 53mE7W
UA 3570United Airlines18:2520:091h 44mE7W
UA 3980United Airlines12:5014:371h 47mE7W
UA 3538United Airlines17:2519:181h 53mE7W
UA 3570United Airlines18:2520:091h 44mE7W
UA 3525United Airlines08:3510:181h 43mE7W
UA 3980United Airlines12:5014:371h 47mE7W
UA 3538United Airlines17:2519:181h 53mE7W
UA 3570United Airlines18:2520:091h 44mE7W
UA 3525United Airlines08:3510:181h 43mE7W
UA 3980United Airlines12:5014:371h 47mE7W
UA 3538United Airlines17:2519:181h 53mE7W
UA 3570United Airlines18:2520:091h 44mE7W
UA 3980United Airlines12:5014:371h 47mE7W
UA 3538United Airlines17:2519:181h 53mE7W
UA 3570United Airlines18:2520:091h 44mE7W

Showing all 26 scheduled IAD to SDF departures across the next 7 days with service. Later dates are on the interactive map.

Departure and arrival times are local at their own airport, so an arrival can fall on a different local date than the departure; the duration column is the true elapsed flying time. A dash means the airline has not filed that value in the schedule data we hold. Aircraft are IATA equipment codes as filed, and can change up to departure.

See every IAD to SDF date on the interactive map

The full IAD to SDF nonstop schedule

United Airlines fly the route nonstop in 2LNR's schedule data. This page carries the full IAD to SDF nonstop schedule, who operates each departure and how often it runs; the reverse direction is linked below.

See real availability

Confirmed upgrade and award seats on each IAD to SDF departure, checked against live inventory so you know what is open before you book.

Set an alert

Premium inventory turns over fast. Watch this route and 2LNR notifies you when space appears on a date you are tracking.

Plan on the map

See IAD to SDF on the interactive route map, with schedules, connections, and route statistics.

Airlines flying Washington to Louisville nonstop

Carriers operating IAD to SDF nonstop in the current schedule. 2LNR tracks confirmed upgrade and award space on each of them.

See IAD to SDF on the interactive map →

Frequently asked questions about IAD to SDF

How far is Louisville from Washington?
IAD to SDF covers about 451 miles nonstop. Flight times vary by aircraft and season; the schedule table on this page lists each scheduled departure with its own times.
Which airlines fly nonstop from IAD to SDF?
United Airlines is currently the only airline flying IAD to SDF nonstop. None of them is a carrier 2LNR reads inventory for, so this page carries the IAD to SDF schedule rather than a space claim.
How many flights a week are there from IAD to SDF?
About 30 nonstop flights a week run between Washington and Louisville in the current schedule, operated by United Airlines. Frequency shifts by season, and the schedule table on this page shows what is scheduled next.
What time do flights from IAD to SDF depart?
Scheduled IAD to SDF nonstops in the next 7 days with service leave between 08:35 and 18:25, local time at Washington. The schedule table on this page lists every departure by date, with its arrival time and aircraft.
Does 2LNR show upgrade or award space on IAD to SDF?
Not on this route: none of United Airlines is a carrier 2LNR reads inventory for. The page carries the full IAD to SDF nonstop schedule and who flies each departure, and the reverse direction is linked below.

See the full IAD to SDF nonstop schedule

Every scheduled departure on this route, with who flies it. On the routes 2LNR does read inventory for, upgrade and award space shows by date, the next 14 days free on every product and the full horizon on Pro.

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