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TWF to USN: distance & flight time
Twin Falls (Joslin Field Magic Valley Regional Airport) → Ulsan (Ulsan Airport)
5,708 mi
9,185 km · 4,960 nm
11h 39m
estimated nonstop flight time
+15h
time difference · heading northwest
See live TWF→USN fares Phone-only fares on this route — call free
Flight time details
5,708 miles nonstop takes roughly 11h 39m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 15-hour time gain when reading arrival times on your ticket.
The two airports
- TWF — Joslin Field Magic Valley Regional Airport · Twin Falls, United States
- 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 TWF
- BYI · Burley Municipal Airport37 mi away
- SUN · Friedman Memorial Airport71 mi away
- MUO · Mountain Home Air Force Base80 mi away
- PIH · Pocatello Regional Airport101 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 TWF from USN?
The flight distance from Twin Falls (TWF) to Ulsan (USN) is 5,708 miles (9,185 km, 4,960 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from TWF to USN?
A nonstop flight takes about 11h 39m 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 Twin Falls and Ulsan?
Ulsan is 15 hours ahead of Twin Falls.
What is the cheapest way to fly from TWF to USN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on TWF–USN that never appear on search engines, with no booking fees.