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ACH to USN: distance & flight time
Altenrhein (St Gallen Altenrhein Airport) → Ulsan (Ulsan Airport)
5,598 mi
9,010 km · 4,865 nm
11h 27m
estimated nonstop flight time
+7h
time difference · heading northeast
See live ACH→USN fares Phone-only fares on this route — call free
Flight time details
5,598 miles nonstop takes roughly 11h 27m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 7-hour time gain when reading arrival times on your ticket.
The two airports
- ACH — St Gallen Altenrhein Airport · Altenrhein, Switzerland
- 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 ACH
- HOH · Hohenems-Dornbirn Airport9 mi away
- FDH · Friedrichshafen Airport13 mi away
- ZRH · Zürich Airport47 mi away
- FMM · Memmingen Allgau Airport47 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 ACH from USN?
The flight distance from Altenrhein (ACH) to Ulsan (USN) is 5,598 miles (9,010 km, 4,865 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ACH to USN?
A nonstop flight takes about 11h 27m 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 Altenrhein and Ulsan?
Ulsan is 7 hours ahead of Altenrhein.
What is the cheapest way to fly from ACH to USN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ACH–USN that never appear on search engines, with no booking fees.