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ONO to USN: distance & flight time
Ontario (Ontario Municipal Airport) → Ulsan (Ulsan Airport)
5,542 mi
8,919 km · 4,816 nm
11h 20m
estimated nonstop flight time
+15h
time difference · heading northwest
See live ONO→USN fares Phone-only fares on this route — call free
Flight time details
5,542 miles nonstop takes roughly 11h 20m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 15-hour time gain when reading arrival times on your ticket.
The two airports
- ONO — Ontario Municipal Airport · Ontario, United States
- USN — Ulsan Airport · Ulsan, South Korea
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 ONO
- BOI · Boise Air Terminal/Gowen Field50 mi away
- BKE · Baker City Municipal Airport69 mi away
- MYL · McCall Municipal Airport75 mi away
- MUO · Mountain Home Air Force Base88 mi away
Near USN
- KPO · Pohang Airport (G-815/K-3)28 mi away
- PUS · Gimhae International Airport37 mi away
- TAE · Daegu Airport44 mi away
- CHF · Jinhae Airbase/Airport (G-813/K-10)48 mi away
Frequently asked questions
How far is ONO from USN?
The flight distance from Ontario (ONO) to Ulsan (USN) is 5,542 miles (8,919 km, 4,816 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ONO to USN?
A nonstop flight takes about 11h 20m 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 Ontario and Ulsan?
Ulsan is 15 hours ahead of Ontario.
What is the cheapest way to fly from ONO to USN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ONO–USN that never appear on search engines, with no booking fees.