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OSN to NGZ: distance & flight time
Osan (Osan Air Base) → Alameda (Alameda Naval Air Station)
5,633 mi
9,066 km · 4,895 nm
11h 31m
estimated nonstop flight time
-16h
time difference · heading northeast
See live OSN→NGZ fares Phone-only fares on this route — call free
Flight time details
5,633 miles nonstop takes roughly 11h 31m 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
- NGZ — Alameda Naval Air Station · Alameda, 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 NGZ
- SFO · San Francisco International Airport12 mi away
- OAK · Metropolitan Oakland International Airport7 mi away
- HWD · Hayward Executive Airport14 mi away
- SQL · San Carlos Airport20 mi away
Frequently asked questions
How far is OSN from NGZ?
The flight distance from Osan (OSN) to Alameda (NGZ) is 5,633 miles (9,066 km, 4,895 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from OSN to NGZ?
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 Osan and Alameda?
Alameda is 16 hours behind Osan.
What is the cheapest way to fly from OSN to NGZ?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on OSN–NGZ that never appear on search engines, with no booking fees.