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INT to SDF: distance & flight time

Winston-salem (Smith Reynolds Airport) → Louisville (Louisville International Standiford Field)

335 mi
539 km · 291 nm
1h 21m
estimated nonstop flight time
Same time
time difference · heading northwest
See live INT→SDF fares Phone-only fares on this route — call free

Flight time details

335 miles nonstop takes roughly 1h 21m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Both airports share the same local time, so schedules read exactly as flown.

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The two airports

Distances are great-circle ("as the crow flies") — the same basis airlines use for frequent-flyer miles.

Alternate airports can cut this fare

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Frequently asked questions

How far is INT from SDF?

The flight distance from Winston-salem (INT) to Louisville (SDF) is 335 miles (539 km, 291 nautical miles), measured along the great-circle route airlines actually fly.

How long is the flight from INT to SDF?

A nonstop flight takes about 1h 21m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.

What is the cheapest way to fly from INT to SDF?

Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on INT–SDF that never appear on search engines, with no booking fees.
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