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KSC to ONT: distance & flight time
Kosice (Košice Airport) → Ontario (Ontario International Airport)
6,185 mi
9,954 km · 5,374 nm
12h 36m
estimated nonstop flight time
-9h
time difference · heading northwest
See live KSC→ONT fares Phone-only fares on this route — call free
Flight time details
6,185 miles nonstop takes roughly 12h 36m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 9-hour time set-back when reading arrival times on your ticket.
The two airports
- KSC — Košice Airport · Kosice, Slovakia
- 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 KSC
- UDJ · Uzhhorod International Airport47 mi away
- TAT · Poprad-Tatry Airport54 mi away
- DEB · Debrecen International Airport83 mi away
- SLD · Sliač Airport96 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 KSC from ONT?
The flight distance from Kosice (KSC) to Ontario (ONT) is 6,185 miles (9,954 km, 5,374 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from KSC to ONT?
A nonstop flight takes about 12h 36m 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 Kosice and Ontario?
Ontario is 9 hours behind Kosice.
What is the cheapest way to fly from KSC to ONT?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on KSC–ONT that never appear on search engines, with no booking fees.