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DEN to USN: distance & flight time
Denver (Denver International Airport) → Ulsan (Ulsan Airport)
6,193 mi
9,967 km · 5,382 nm
12h 37m
estimated nonstop flight time
+15h
time difference · heading northwest
See live DEN→USN fares Phone-only fares on this route — call free
Flight time details
6,193 miles nonstop takes roughly 12h 37m 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
- DEN — Denver International Airport · Denver, 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 DEN
- BFK · Buckley Air Force Base12 mi away
- APA · Centennial Airport22 mi away
- BJC · Rocky Mountain Metropolitan Airport24 mi away
- WBU · Boulder Municipal Airport32 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 DEN from USN?
The flight distance from Denver (DEN) to Ulsan (USN) is 6,193 miles (9,967 km, 5,382 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from DEN to USN?
A nonstop flight takes about 12h 37m 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 Denver and Ulsan?
Ulsan is 15 hours ahead of Denver.
What is the cheapest way to fly from DEN to USN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on DEN–USN that never appear on search engines, with no booking fees.