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ONT to RSU: distance & flight time
Ontario (Ontario International Airport) → Yeosu (Yeosu Airport)
6,080 mi
9,785 km · 5,283 nm
12h 23m
estimated nonstop flight time
+16h
time difference · heading northwest
See live ONT→RSU fares Phone-only fares on this route — call free
Flight time details
6,080 miles nonstop takes roughly 12h 23m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 16-hour time gain when reading arrival times on your ticket.
The two airports
- ONT — Ontario International Airport · Ontario, United States
- RSU — Yeosu Airport · Yeosu, 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 ONT
- CCB · Cable Airport6 mi away
- CNO · Chino Airport6 mi away
- LAX · Los Angeles International Airport47 mi away
- RAL · Riverside Municipal Airport11 mi away
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
Frequently asked questions
How far is ONT from RSU?
The flight distance from Ontario (ONT) to Yeosu (RSU) 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 ONT to RSU?
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 Ontario and Yeosu?
Yeosu is 16 hours ahead of Ontario.
What is the cheapest way to fly from ONT to RSU?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ONT–RSU that never appear on search engines, with no booking fees.