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OSN to APC: distance & flight time
Osan (Osan Air Base) → Napa (Napa County Airport)
5,616 mi
9,038 km · 4,880 nm
11h 29m
estimated nonstop flight time
-16h
time difference · heading northeast
See live OSN→APC fares Phone-only fares on this route — call free
Flight time details
5,616 miles nonstop takes roughly 11h 29m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 16-hour time set-back when reading arrival times on your ticket.
The two airports
- OSN — Osan Air Base · Osan, South Korea
- APC — Napa County Airport · Napa, United States
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 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
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
Frequently asked questions
How far is OSN from APC?
The flight distance from Osan (OSN) to Napa (APC) is 5,616 miles (9,038 km, 4,880 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from OSN to APC?
A nonstop flight takes about 11h 29m 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 Osan and Napa?
Napa is 16 hours behind Osan.
What is the cheapest way to fly from OSN to APC?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on OSN–APC that never appear on search engines, with no booking fees.