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SDF to IAG: distance & flight time

Louisville (Louisville International Standiford Field) → Niagara Falls (Niagara Falls International Airport)

493 mi
793 km · 428 nm
1h 32m
estimated nonstop flight time
Same time
time difference · heading northeast
See live SDF→IAG fares Phone-only fares on this route — call free

Flight time details

493 miles nonstop takes roughly 1h 32m gate to gate, flying northeast. 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 SDF from IAG?

The flight distance from Louisville (SDF) to Niagara Falls (IAG) is 493 miles (793 km, 428 nautical miles), measured along the great-circle route airlines actually fly.

How long is the flight from SDF to IAG?

A nonstop flight takes about 1h 32m 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 SDF to IAG?

Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on SDF–IAG that never appear on search engines, with no booking fees.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