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SDF to ONT: distance & flight time
Louisville (Louisville International Standiford Field) → Ontario (Ontario International Airport)
1,792 mi
2,884 km · 1,557 nm
3h 59m
estimated nonstop flight time
-3h
time difference · heading west
See live SDF→ONT fares Phone-only fares on this route — call free
Flight time details
1,792 miles nonstop takes roughly 3h 59m gate to gate, flying west. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 3-hour time set-back when reading arrival times on your ticket.
The two airports
- SDF — Louisville International Standiford Field · Louisville, United States
- ONT — Ontario International Airport · Ontario, United States
Distances are great-circle ("as the crow flies") — the same basis airlines use for frequent-flyer miles.
Alternate airports can cut this fare
Flying from or into a nearby airport is the #1 trick our agents use to beat online prices. Call and we'll compare every combination on one call.
Near SDF
- LOU · Bowman Field5 mi away
- FTK · Godman Army Air Field22 mi away
- FFT · Capital City Airport45 mi away
- LEX · Blue Grass Airport62 mi away
Near ONT
- CCB · Cable Airport6 mi away
- CNO · Chino Airport6 mi away
- LAX · Los Angeles International Airport47 mi away
- RAL · Riverside Municipal Airport11 mi away
Frequently asked questions
How far is SDF from ONT?
The flight distance from Louisville (SDF) to Ontario (ONT) is 1,792 miles (2,884 km, 1,557 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from SDF to ONT?
A nonstop flight takes about 3h 59m 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 time difference between Louisville and Ontario?
Ontario is 3 hours behind Louisville.
What is the cheapest way to fly from SDF to ONT?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on SDF–ONT that never appear on search engines, with no booking fees.