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INT to USN: distance & flight time
Winston-salem (Smith Reynolds Airport) → Ulsan (Ulsan Airport)
7,129 mi
11,473 km · 6,195 nm
14h 27m
estimated nonstop flight time
+13h
time difference · heading northwest
See live INT→USN fares Phone-only fares on this route — call free
Flight time details
7,129 miles nonstop takes roughly 14h 27m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 13-hour time gain when reading arrival times on your ticket.
The two airports
- INT — Smith Reynolds Airport · Winston-salem, 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 INT
- GSO · Piedmont Triad International Airport16 mi away
- CLT · Charlotte Douglas International Airport75 mi away
- SVH · Statesville Regional Airport48 mi away
- IKB · Wilkes County Airport49 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 INT from USN?
The flight distance from Winston-salem (INT) to Ulsan (USN) is 7,129 miles (11,473 km, 6,195 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from INT to USN?
A nonstop flight takes about 14h 27m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
Are there nonstop flights from INT to USN?
Nonstop service on INT–USN depends on the season and the day of week. Run the fare search on this page with the nonstop filter applied to see current direct options; when there is no nonstop, a single connection through a carrier hub adds roughly 2–4 hours to the 14h 27m nonstop estimate.
What is the time difference between Winston-salem and Ulsan?
Ulsan is 13 hours ahead of Winston-salem.
What is the cheapest way to fly from INT to USN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on INT–USN that never appear on search engines, with no booking fees.
Why are some INT to USN fares phone-only?
Consolidator contracts let us sell certain INT–USN tickets below the price airlines permit us to publish online, so those fares can only be quoted over the phone. Call the travel desk and an agent will check phone-only inventory for your dates.