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OSN to TNH: distance & flight time
Osan (Osan Air Base) → Tonghua (Tonghua Sanyuanpu Airport)
364 mi
585 km · 316 nm
1h 25m
estimated nonstop flight time
-1h
time difference · heading north
See live OSN→TNH fares Phone-only fares on this route — call free
Flight time details
364 miles nonstop takes roughly 1h 25m gate to gate, flying north. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 1-hour time set-back when reading arrival times on your ticket.
The two airports
- OSN — Osan Air Base · Osan, South Korea
- TNH — Tonghua Sanyuanpu Airport · Tonghua, China
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 TNH
- NBS · Changbaishan Airport98 mi away
- CGQ · Longjia Airport120 mi away
- SHE · Taoxian Airport122 mi away
Frequently asked questions
How far is OSN from TNH?
The flight distance from Osan (OSN) to Tonghua (TNH) is 364 miles (585 km, 316 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from OSN to TNH?
A nonstop flight takes about 1h 25m 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 TNH?
Nonstop service on OSN–TNH 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 25m nonstop estimate.
What is the time difference between Osan and Tonghua?
Tonghua is 1 hour behind Osan.
What is the cheapest way to fly from OSN to TNH?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on OSN–TNH that never appear on search engines, with no booking fees.
Why are some OSN to TNH fares phone-only?
Consolidator contracts let us sell certain OSN–TNH 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.