Dulles (IAD) to Louisville (SDF) flights
One airline flies nonstop from Dulles (IAD) to Louisville (SDF): United Airlines. The two airports are 451 miles (726 km) apart. United Airlines is in Star Alliance. There are also 14 ways to fly it with one stop, through Pittsburgh, Raleigh/Durham and Charlotte and more.
Airlines flying nonstop from IAD to SDF
- United AirlinesStar Alliance · bookable with 13 programsWho books it
Book IAD to SDF with points
Loyalty programs that can book at least one of the nonstop airlines, from the Award Booking Guide.
- Air Canada AeroplanBooks United Airlines
- Air New Zealand AirpointsBooks United Airlines
- ANA Mileage ClubBooks United Airlines
- Avianca LifeMilesBooks United Airlines
- Emirates SkywardsBooks United Airlines
- EVA Air Infinity MileageLandsBooks United Airlines
- JetBlue TrueBlueBooks United Airlines
- Lufthansa Miles & MoreBooks United Airlines
- Singapore Airlines KrisFlyerBooks United Airlines
- TAP Miles&GoBooks United Airlines
- Thai Royal Orchid PlusBooks United Airlines
- Turkish Airlines Miles&SmilesBooks United Airlines
- United MileagePlusBooks United Airlines
IAD to SDF with one stop
14 connections, most direct first. 2-stop routings and flight times are in Routes with Pro.
- Via Pittsburgh (PIT)United Airlines, then Breeze Airways
- Via Raleigh/Durham (RDU)United Airlines, then Breeze Airways
- Via Charlotte (CLT)American Airlines the whole way
- Via Detroit (DTW)Delta Air Lines the whole way
- Via Nashville (BNA)United Airlines, then Southwest Airlines
- Via Philadelphia (PHL)United Airlines, then American Airlines
- Via New York (EWR)United Airlines the whole way
- Via Atlanta (ATL)Delta Air Lines the whole way
- Via Chicago (ORD)United Airlines the whole way
- Via New York (LGA)United Airlines, then Delta Air Lines
- Via Charleston (CHS)United Airlines, then Breeze Airways
- Via Hartford (BDL)United Airlines, then Breeze Airways
- Via Boston (BOS)United Airlines, then Delta Air Lines and American Airlines
- Via Fort Walton Beach (VPS)Allegiant Air the whole way
IAD to SDF: common questions
Which airlines fly nonstop from IAD to SDF?
United Airlines (Star Alliance) flies nonstop from Dulles (IAD) to Louisville (SDF).
How far is Dulles from Louisville by plane?
Dulles (IAD) and Louisville (SDF) are 451 miles (726 km) apart along the great circle, the shortest path a flight can take. Connections add distance on top.
Which points programs can book IAD to SDF award flights?
13 programs can book at least one of the nonstop airlines: Air Canada Aeroplan, Air New Zealand Airpoints, ANA Mileage Club, Avianca LifeMiles, Emirates Skywards, EVA Air Infinity MileageLands, JetBlue TrueBlue, Lufthansa Miles & More and 5 more. Which flights each can book depends on its partners, so check the airline before you transfer points.
How many miles does IAD to SDF cost?
It depends on the program: each prices the route from its own chart or dynamically. The Award Flight Pricer compares 30+ programs for IAD to SDF with taxes and fees.
Where can I connect between Dulles and Louisville?
The most direct connections are through Pittsburgh (PIT), Raleigh/Durham (RDU), Charlotte (CLT), Detroit (DTW) and Nashville (BNA). On 6 of them the same airline flies both flights, for example American Airlines through Charlotte.
More routes
Routes are scheduled nonstop flights. The route data is refreshed monthly; this list was last checked November 11, 2026. Seasonal routes and new launches can be missing or end early, so confirm with the airline before you book. Distances are great-circle, the shortest path between the two airports.