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USN to JSI: distance & flight time
Ulsan (Ulsan Airport) → Skiathos (Skiathos Island National Airport)
5,439 mi
8,754 km · 4,727 nm
11h 8m
estimated nonstop flight time
-6h
time difference · heading northwest
See live USN→JSI fares Phone-only fares on this route — call free
Flight time details
5,439 miles nonstop takes roughly 11h 8m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 6-hour time set-back when reading arrival times on your ticket.
The two airports
- USN — Ulsan Airport · Ulsan, South Korea
- JSI — Skiathos Island National Airport · Skiathos, Greece
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 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
Near JSI
- VOL · Nea Anchialos Airport38 mi away
- SKU · Skiros Airport55 mi away
- LRA · Larisa Airport64 mi away
- ATH · Eleftherios Venizelos International Airport89 mi away
Frequently asked questions
How far is USN from JSI?
The flight distance from Ulsan (USN) to Skiathos (JSI) is 5,439 miles (8,754 km, 4,727 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from USN to JSI?
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 Ulsan and Skiathos?
Skiathos is 6 hours behind Ulsan.
What is the cheapest way to fly from USN to JSI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on USN–JSI that never appear on search engines, with no booking fees.