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OSN to KUM: distance & flight time
Osan (Osan Air Base) → Yakushima (Yakushima Airport)
508 mi
817 km · 441 nm
1h 34m
estimated nonstop flight time
Same time
time difference · heading southeast
See live OSN→KUM fares Phone-only fares on this route — call free
Flight time details
508 miles nonstop takes roughly 1h 34m gate to gate, flying southeast. 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
- KUM — Yakushima Airport · Yakushima, 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 KUM
- TNE · New Tanegashima Airport25 mi away
- KOJ · Kagoshima Airport98 mi away
- KMI · Miyazaki Airport113 mi away
- ASJ · Amami Airport147 mi away
Frequently asked questions
How far is OSN from KUM?
The flight distance from Osan (OSN) to Yakushima (KUM) is 508 miles (817 km, 441 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from OSN to KUM?
A nonstop flight takes about 1h 34m 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 KUM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on OSN–KUM that never appear on search engines, with no booking fees.