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DEC to USN: distance & flight time
Decatur (Decatur Airport) → Ulsan (Ulsan Airport)
6,686 mi
10,760 km · 5,810 nm
13h 35m
estimated nonstop flight time
+14h
time difference · heading northwest
See live DEC→USN fares Phone-only fares on this route — call free
Flight time details
6,686 miles nonstop takes roughly 13h 35m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 14-hour time gain when reading arrival times on your ticket.
The two airports
- DEC — Decatur Airport · Decatur, 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 DEC
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 DEC from USN?
The flight distance from Decatur (DEC) to Ulsan (USN) is 6,686 miles (10,760 km, 5,810 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from DEC to USN?
A nonstop flight takes about 13h 35m 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 Decatur and Ulsan?
Ulsan is 14 hours ahead of Decatur.
What is the cheapest way to fly from DEC to USN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on DEC–USN that never appear on search engines, with no booking fees.