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RSU to ONT: distance & flight time
Yeosu (Yeosu Airport) → Ontario (Ontario International Airport)
6,080 mi
9,785 km · 5,283 nm
12h 23m
estimated nonstop flight time
-16h
time difference · heading northeast
See live RSU→ONT fares Phone-only fares on this route — call free
Flight time details
6,080 miles nonstop takes roughly 12h 23m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 16-hour time set-back when reading arrival times on your ticket.
The two airports
- RSU — Yeosu Airport · Yeosu, South Korea
- 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 RSU
- HIN · Sacheon Air Base/Airport31 mi away
- KWJ · Gwangju Airport50 mi away
- CHF · Jinhae Airbase/Airport (G-813/K-10)64 mi away
- MPK · Mokpo Heliport70 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 RSU from ONT?
The flight distance from Yeosu (RSU) to Ontario (ONT) is 6,080 miles (9,785 km, 5,283 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from RSU to ONT?
A nonstop flight takes about 12h 23m 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 Yeosu and Ontario?
Ontario is 16 hours behind Yeosu.
What is the cheapest way to fly from RSU to ONT?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on RSU–ONT that never appear on search engines, with no booking fees.