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APC to USN: distance & flight time
Napa (Napa County Airport) → Ulsan (Ulsan Airport)
5,587 mi
8,992 km · 4,855 nm
11h 25m
estimated nonstop flight time
+16h
time difference · heading northwest
See live APC→USN fares Phone-only fares on this route — call free
Flight time details
5,587 miles nonstop takes roughly 11h 25m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 16-hour time gain when reading arrival times on your ticket.
The two airports
- APC — Napa County Airport · Napa, United States
- 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 APC
- SFO · San Francisco International Airport41 mi away
- NOT · Marin County Airport - Gnoss Field16 mi away
- SUU · Travis Air Force Base20 mi away
- CCR · Buchanan Field20 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 APC from USN?
The flight distance from Napa (APC) to Ulsan (USN) is 5,587 miles (8,992 km, 4,855 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from APC to USN?
A nonstop flight takes about 11h 25m 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 Napa and Ulsan?
Ulsan is 16 hours ahead of Napa.
What is the cheapest way to fly from APC to USN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on APC–USN that never appear on search engines, with no booking fees.