Need help booking?
Unpublished phone-only deals available
USN to PHN: distance & flight time
Ulsan (Ulsan Airport) → Port Huron (St Clair County International Airport)
6,653 mi
10,706 km · 5,781 nm
13h 31m
estimated nonstop flight time
-13h
time difference · heading northeast
See live USN→PHN fares Phone-only fares on this route — call free
Flight time details
6,653 miles nonstop takes roughly 13h 31m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 13-hour time set-back when reading arrival times on your ticket.
The two airports
- USN — Ulsan Airport · Ulsan, South Korea
- PHN — St Clair County International Airport · Port Huron, 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 PHN
Frequently asked questions
How far is USN from PHN?
The flight distance from Ulsan (USN) to Port Huron (PHN) is 6,653 miles (10,706 km, 5,781 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from USN to PHN?
A nonstop flight takes about 13h 31m 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 Ulsan and Port Huron?
Port Huron is 13 hours behind Ulsan.
What is the cheapest way to fly from USN to PHN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on USN–PHN that never appear on search engines, with no booking fees.