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SFZ to USN: distance & flight time
Smithfield (North Central State Airport) → Ulsan (Ulsan Airport)
6,921 mi
11,139 km · 6,014 nm
14h 2m
estimated nonstop flight time
+13h
time difference · heading north
See live SFZ→USN fares Phone-only fares on this route — call free
Flight time details
6,921 miles nonstop takes roughly 14h 2m gate to gate, flying north. 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
- SFZ — North Central State Airport · Smithfield, 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 SFZ
- BOS · General Edward Lawrence Logan International Airport39 mi away
- PVD · Theodore Francis Green State Airport14 mi away
- NCO · Quonset State Airport23 mi away
- OWD · Norwood Memorial Airport25 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 SFZ from USN?
The flight distance from Smithfield (SFZ) to Ulsan (USN) is 6,921 miles (11,139 km, 6,014 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from SFZ to USN?
A nonstop flight takes about 14h 2m 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 SFZ to USN?
Nonstop service on SFZ–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 2m nonstop estimate.
What is the time difference between Smithfield and Ulsan?
Ulsan is 13 hours ahead of Smithfield.
What is the cheapest way to fly from SFZ to USN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on SFZ–USN that never appear on search engines, with no booking fees.
Why are some SFZ to USN fares phone-only?
Consolidator contracts let us sell certain SFZ–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.