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OSN to SYD: distance & flight time
Osan (Osan Air Base) → Sydney (Sydney Kingsford Smith International Airport)
5,148 mi
8,285 km · 4,474 nm
10h 34m
estimated nonstop flight time
+1h
time difference · heading south
See live OSN→SYD fares Phone-only fares on this route — call free
Flight time details
5,148 miles nonstop takes roughly 10h 34m gate to gate, flying south. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 1-hour time gain when reading arrival times on your ticket.
The two airports
- OSN — Osan Air Base · Osan, South Korea
- SYD — Sydney Kingsford Smith International Airport · Sydney, Australia
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 OSN
- ICN · Incheon International Airport41 mi away
- SWU · Suwon Airport10 mi away
- SSN · Seoul Air Base (K-16)25 mi away
- GMP · Gimpo International Airport35 mi away
Near SYD
- BWU · Sydney Bankstown Airport11 mi away
- CDU · Camden Airport29 mi away
- XRH · RAAF Base Richmond33 mi away
- WOL · Wollongong Airport48 mi away
Frequently asked questions
How far is OSN from SYD?
The flight distance from Osan (OSN) to Sydney (SYD) is 5,148 miles (8,285 km, 4,474 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from OSN to SYD?
A nonstop flight takes about 10h 34m 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 Osan and Sydney?
Sydney is 1 hour ahead of Osan.
What is the cheapest way to fly from OSN to SYD?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on OSN–SYD that never appear on search engines, with no booking fees.