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UTH to USN: distance & flight time
Udon Thani (Udon Thani Airport) → Ulsan (Ulsan Airport)
2,057 mi
3,310 km · 1,787 nm
4h 30m
estimated nonstop flight time
+2h
time difference · heading northeast
See live UTH→USN fares Phone-only fares on this route — call free
Flight time details
2,057 miles nonstop takes roughly 4h 30m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 2-hour time gain when reading arrival times on your ticket.
The two airports
- UTH — Udon Thani Airport · Udon Thani, Thailand
- 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 UTH
- VTE · Wattay International Airport44 mi away
- KKC · Khon Kaen Airport64 mi away
- LOE · Loei Airport70 mi away
- SNO · Sakon Nakhon Airport89 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 UTH from USN?
The flight distance from Udon Thani (UTH) to Ulsan (USN) is 2,057 miles (3,310 km, 1,787 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from UTH to USN?
A nonstop flight takes about 4h 30m 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 Udon Thani and Ulsan?
Ulsan is 2 hours ahead of Udon Thani.
What is the cheapest way to fly from UTH to USN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on UTH–USN that never appear on search engines, with no booking fees.