Need help booking?
Unpublished phone-only deals available
SFO to OSN: distance & flight time
San Francisco (San Francisco International Airport) → Osan (Osan Air Base)
5,639 mi
9,075 km · 4,900 nm
11h 31m
estimated nonstop flight time
+16h
time difference · heading northwest
See live SFO→OSN fares Phone-only fares on this route — call free
Flight time details
5,639 miles nonstop takes roughly 11h 31m 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
- OSN — Osan Air Base · Osan, 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 OSN
- ICN · Incheon International Airport41 mi away
- SWU · Suwon Airport10 mi away
- SSN · Seoul Air Base (K-16)25 mi away
- GMP · Gimpo International Airport35 mi away
Frequently asked questions
How far is SFO from OSN?
The flight distance from San Francisco (SFO) to Osan (OSN) is 5,639 miles (9,075 km, 4,900 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from SFO to OSN?
A nonstop flight takes about 11h 31m 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 Osan?
Osan is 16 hours ahead of San Francisco.
What is the cheapest way to fly from SFO to OSN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on SFO–OSN that never appear on search engines, with no booking fees.