Need help booking?
Unpublished phone-only deals available
USN to OTP: distance & flight time
Ulsan (Ulsan Airport) → Bucharest (Henri Coandă International Airport)
5,113 mi
8,229 km · 4,443 nm
10h 30m
estimated nonstop flight time
-6h
time difference · heading northwest
See live USN→OTP fares Phone-only fares on this route — call free
Flight time details
5,113 miles nonstop takes roughly 10h 30m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 6-hour time set-back when reading arrival times on your ticket.
The two airports
- USN — Ulsan Airport · Ulsan, South Korea
- OTP — Henri Coandă International Airport · Bucharest, Romania
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 OTP
- BBU · Băneasa International Airport5 mi away
- GOZ · Gorna Oryahovitsa Airport100 mi away
- CRA · Craiova Airport110 mi away
- CND · Mihail Kogălniceanu International Airport119 mi away
Frequently asked questions
How far is USN from OTP?
The flight distance from Ulsan (USN) to Bucharest (OTP) is 5,113 miles (8,229 km, 4,443 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from USN to OTP?
A nonstop flight takes about 10h 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 Ulsan and Bucharest?
Bucharest is 6 hours behind Ulsan.
What is the cheapest way to fly from USN to OTP?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on USN–OTP that never appear on search engines, with no booking fees.