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IAH to USN: distance & flight time
Houston (George Bush Intercontinental Houston Airport) → Ulsan (Ulsan Airport)
7,055 mi
11,354 km · 6,131 nm
14h 18m
estimated nonstop flight time
+14h
time difference · heading northwest
See live IAH→USN fares Phone-only fares on this route — call free
Flight time details
7,055 miles nonstop takes roughly 14h 18m 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
- IAH — George Bush Intercontinental Houston Airport · Houston, 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 IAH
- DWH · David Wayne Hooks Memorial Airport14 mi away
- IWS · West Houston Airport23 mi away
- AAP · Andrau Airpark23 mi away
- HOU · William P Hobby Airport24 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 IAH from USN?
The flight distance from Houston (IAH) to Ulsan (USN) is 7,055 miles (11,354 km, 6,131 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from IAH to USN?
A nonstop flight takes about 14h 18m 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 Houston and Ulsan?
Ulsan is 14 hours ahead of Houston.
What is the cheapest way to fly from IAH to USN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on IAH–USN that never appear on search engines, with no booking fees.