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OSN to ITM: distance & flight time
Osan (Osan Air Base) → Osaka (Osaka International Airport)
496 mi
799 km · 431 nm
1h 33m
estimated nonstop flight time
Same time
time difference · heading east
See live OSN→ITM fares Phone-only fares on this route — call free
Flight time details
496 miles nonstop takes roughly 1h 33m 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
- ITM — Osaka International Airport · Osaka, 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 ITM
- UKB · Kobe Airport16 mi away
- KIX · Kansai International Airport27 mi away
- TJH · Tajima Airport62 mi away
- TKS · Tokushima Airport/JMSDF Air Base65 mi away
Frequently asked questions
How far is OSN from ITM?
The flight distance from Osan (OSN) to Osaka (ITM) is 496 miles (799 km, 431 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from OSN to ITM?
A nonstop flight takes about 1h 33m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
Are there nonstop flights from OSN to ITM?
Nonstop service on OSN–ITM depends on the season and the day of week. Run the fare search on this page with the nonstop filter applied to see current direct options; when there is no nonstop, a single connection through a carrier hub adds roughly 2–4 hours to the 1h 33m nonstop estimate.
What is the cheapest way to fly from OSN to ITM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on OSN–ITM that never appear on search engines, with no booking fees.
Why are some OSN to ITM fares phone-only?
Consolidator contracts let us sell certain OSN–ITM tickets below the price airlines permit us to publish online, so those fares can only be quoted over the phone. Call the travel desk and an agent will check phone-only inventory for your dates.