Need help booking?
Unpublished phone-only deals available
KSJ to USN: distance & flight time
Kasos (Kasos Airport) → Ulsan (Ulsan Airport)
5,443 mi
8,760 km · 4,730 nm
11h 8m
estimated nonstop flight time
+6h
time difference · heading northeast
See live KSJ→USN fares Phone-only fares on this route — call free
Flight time details
5,443 miles nonstop takes roughly 11h 8m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 6-hour time gain when reading arrival times on your ticket.
The two airports
- KSJ — Kasos Airport · Kasos, Greece
- 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 KSJ
- AOK · Karpathos Airport13 mi away
- JSH · Sitia Airport48 mi away
- JTY · Astypalaia Airport85 mi away
- KGS · Kos Airport95 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 KSJ from USN?
The flight distance from Kasos (KSJ) to Ulsan (USN) is 5,443 miles (8,760 km, 4,730 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from KSJ to USN?
A nonstop flight takes about 11h 8m 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 Kasos and Ulsan?
Ulsan is 6 hours ahead of Kasos.
What is the cheapest way to fly from KSJ to USN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on KSJ–USN that never appear on search engines, with no booking fees.