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SFO to USN: distance & flight time
San Francisco (San Francisco International Airport) → Ulsan (Ulsan Airport)
5,609 mi
9,027 km · 4,874 nm
11h 28m
estimated nonstop flight time
+16h
time difference · heading northwest
See live SFO→USN fares Phone-only fares on this route — call free
Flight time details
5,609 miles nonstop takes roughly 11h 28m 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
- SFO — San Francisco International Airport · San Francisco, 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 SFO
- SQL · San Carlos Airport10 mi away
- HAF · Half Moon Bay Airport10 mi away
- OAK · Metropolitan Oakland International Airport11 mi away
- NGZ · Alameda Naval Air Station12 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 SFO from USN?
The flight distance from San Francisco (SFO) to Ulsan (USN) is 5,609 miles (9,027 km, 4,874 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from SFO to USN?
A nonstop flight takes about 11h 28m 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 San Francisco and Ulsan?
Ulsan is 16 hours ahead of San Francisco.
What is the cheapest way to fly from SFO to USN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on SFO–USN that never appear on search engines, with no booking fees.