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OSN to OKO: distance & flight time
Osan (Osan Air Base) → Yokota (Yokota Air Base)
691 mi
1,111 km · 600 nm
1h 58m
estimated nonstop flight time
Same time
time difference · heading east
See live OSN→OKO fares Phone-only fares on this route — call free
Flight time details
691 miles nonstop takes roughly 1h 58m gate to gate, flying east. 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
- OSN — Osan Air Base · Osan, South Korea
- OKO — Yokota Air Base · Yokota, Japan
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 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
Frequently asked questions
How far is OSN from OKO?
The flight distance from Osan (OSN) to Yokota (OKO) is 691 miles (1,111 km, 600 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from OSN to OKO?
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 OSN to OKO?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on OSN–OKO that never appear on search engines, with no booking fees.