Houston (IAH) to Louisville (SDF) flights
One airline flies nonstop from Houston (IAH) to Louisville (SDF): United Airlines. The two airports are 788 miles (1,268 km) apart. United Airlines is in Star Alliance. There are also 18 ways to fly it with one stop, through Nashville, New Orleans and Dallas and more.
Airlines flying nonstop from IAH to SDF
- United AirlinesStar Alliance · bookable with 13 programsWho books it
Book IAH 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
IAH to SDF with one stop
18 connections, most direct first. 2-stop routings and flight times are in Routes with Pro.
- Via Nashville (BNA)United Airlines, then Southwest Airlines
- Via New Orleans (MSY)United Airlines, then Breeze Airways and Southwest Airlines
- Via Dallas (DFW)American Airlines the whole way
- Via Atlanta (ATL)Delta Air Lines the whole way
- Via Oklahoma City (OKC)United Airlines, then Southwest Airlines
- Via Chicago (ORD)American Airlines and United Airlines the whole way
- Via Charlotte (CLT)American Airlines the whole way
- Via Detroit (DTW)Delta Air Lines the whole way
- Via Charleston (CHS)United Airlines, then Breeze Airways
- Via Pittsburgh (PIT)United Airlines, then Breeze Airways
- Via Raleigh/Durham (RDU)United Airlines and Frontier Airlines, then Breeze Airways
- Via Tampa (TPA)United Airlines and Frontier Airlines, then Southwest Airlines and Breeze Airways
- Via Sarasota (SRQ)United Airlines, then Allegiant Air
- Via Orlando (MCO)United Airlines and Frontier Airlines, then Delta Air Lines and Southwest Airlines
- Via Minneapolis (MSP)Delta Air Lines the whole way
IAH to SDF: common questions
Which airlines fly nonstop from IAH to SDF?
United Airlines (Star Alliance) flies nonstop from Houston (IAH) to Louisville (SDF).
How far is Houston from Louisville by plane?
Houston (IAH) and Louisville (SDF) are 788 miles (1,268 km) apart along the great circle, the shortest path a flight can take. Connections add distance on top.
Which points programs can book IAH 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 IAH 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 IAH to SDF with taxes and fees.
Where can I connect between Houston and Louisville?
The most direct connections are through Nashville (BNA), New Orleans (MSY), Dallas (DFW), Atlanta (ATL) and Oklahoma City (OKC). On 8 of them the same airline flies both flights, for example American Airlines through Dallas.
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.