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OKO to OSN: distance & flight time
Yokota (Yokota Air Base) → Osan (Osan Air Base)
691 mi
1,111 km · 600 nm
1h 58m
estimated nonstop flight time
Same time
time difference · heading west
See live OKO→OSN fares Phone-only fares on this route — call free
Flight time details
691 miles nonstop takes roughly 1h 58m gate to gate, flying west. Add 45–90 minutes per connection if there's no nonstop service. Both airports share the same local time, so schedules read exactly as flown.
The two airports
- OKO — Yokota Air Base · Yokota, Japan
- 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 OKO
- HND · Tokyo Haneda International Airport28 mi away
- NRT · Narita International Airport58 mi away
- NJA · Atsugi Naval Air Facility21 mi away
- IBR · Hyakuri Airport67 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 OKO from OSN?
The flight distance from Yokota (OKO) to Osan (OSN) is 691 miles (1,111 km, 600 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from OKO to OSN?
A nonstop flight takes about 1h 58m 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 cheapest way to fly from OKO to OSN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on OKO–OSN that never appear on search engines, with no booking fees.