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OSN to ATY: distance & flight time
Osan (Osan Air Base) → Watertown (Watertown Regional Airport)
6,136 mi
9,876 km · 5,332 nm
12h 30m
estimated nonstop flight time
-14h
time difference · heading northeast
See live OSN→ATY fares Phone-only fares on this route — call free
Flight time details
6,136 miles nonstop takes roughly 12h 30m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 14-hour time set-back when reading arrival times on your ticket.
The two airports
- OSN — Osan Air Base · Osan, South Korea
- ATY — Watertown Regional Airport · Watertown, United States
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 ATY
- HON · Huron Regional Airport64 mi away
- ABR · Aberdeen Regional Airport72 mi away
- MHE · Mitchell Municipal Airport90 mi away
- FSD · Joe Foss Field Airport94 mi away
Frequently asked questions
How far is OSN from ATY?
The flight distance from Osan (OSN) to Watertown (ATY) is 6,136 miles (9,876 km, 5,332 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from OSN to ATY?
A nonstop flight takes about 12h 30m 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 time difference between Osan and Watertown?
Watertown is 14 hours behind Osan.
What is the cheapest way to fly from OSN to ATY?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on OSN–ATY that never appear on search engines, with no booking fees.