Ulsan Airport
Ulsan, South Korea — flight times and distances to airports around the world, computed from published coordinates.
SOURCE·OurAirports + great-circle computation·REVIEWED JUL 2026
How this is worked out
- Both airports' coordinates come from OurAirports, a public-domain dataset — nothing is scraped from another flight site.
- Distance is a great-circle (haversine) figure on a mean earth radius of 6,371.0088 km, so it is the shortest path over the surface, not a road distance.
- Airborne time is that distance divided by 805 km/h, a representative jet cruise speed.
- A flat 25 minutes is added for pushback, taxi, climb, descent and taxi-in, which is why no hop is ever half an hour gate to gate.
- Winds, aircraft type and airline schedule padding are not modelled, and every route page shows the same distance at four cruise speeds so you can see what that assumption is worth.
gate-to-gate hours = 0.42 + distance km / 805
SOURCE·OurAirports + great-circle computation·REVIEWED JUL 2026
Flight times from USN to the nearest major hubs
Great-circle distance and estimated flight time to the closest large international airports — the realistic connecting points from Ulsan.
| Hub | Code | Distance | Flight time |
|---|---|---|---|
| Fukuoka, Japan | FUK | 245 km | 43m |
| Seoul, South Korea | GMP | 316 km | 49m |
| Seoul, South Korea | ICN | 333 km | 50m |
| Osaka, Japan | KIX | 552 km | 1h 06m |
| Tokoname, Japan | NGO | 682 km | 1h 16m |
| Shanghai (Pudong), China | PVG | 857 km | 1h 29m |
| Shanghai (Minhang), China | SHA | 890 km | 1h 32m |
| Tokyo, Japan | HND | 943 km | 1h 36m |
| Narita, Japan | NRT | 997 km | 1h 39m |
| Hangzhou, China | HGH | 1,023 km | 1h 41m |
SOURCE·OurAirports + great-circle computation·REVIEWED JUL 2026
Questions about USN
What is the airport code for Ulsan?
Ulsan Airport uses the IATA code USN and the ICAO code RKPU. IATA codes are the three-letter ones on your boarding pass; ICAO codes are four letters and used by air traffic control.
Where is Ulsan Airport?
It sits at 35.5935° N, 129.3520° E, serving Ulsan in South Korea, at an elevation of 45 feet.
Data from OurAirports (public domain) · Wikipedia. Flight times are great-circle estimates for planning only — always check the airline's published schedule.
