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USN to IAH: distance & flight time
Ulsan (Ulsan Airport) → Houston (George Bush Intercontinental Houston Airport)
7,055 mi
11,354 km · 6,131 nm
14h 18m
estimated nonstop flight time
-14h
time difference · heading northeast
See live USN→IAH fares Phone-only fares on this route — call free
Flight time details
7,055 miles nonstop takes roughly 14h 18m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 14-hour time set-back when reading arrival times on your ticket.
The two airports
- USN — Ulsan Airport · Ulsan, South Korea
- IAH — George Bush Intercontinental Houston Airport · Houston, United States
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 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
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
Frequently asked questions
How far is USN from IAH?
The flight distance from Ulsan (USN) to Houston (IAH) 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 USN to IAH?
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.
Are there nonstop flights from USN to IAH?
Nonstop service on USN–IAH 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 18m nonstop estimate.
What is the time difference between Ulsan and Houston?
Houston is 14 hours behind Ulsan.
What is the cheapest way to fly from USN to IAH?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on USN–IAH that never appear on search engines, with no booking fees.
Why are some USN to IAH fares phone-only?
Consolidator contracts let us sell certain USN–IAH 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.