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OSN to RST: distance & flight time
Osan (Osan Air Base) → Rochester (Rochester International Airport)
6,317 mi
10,167 km · 5,490 nm
12h 51m
estimated nonstop flight time
-14h
time difference · heading northeast
See live OSN→RST fares Phone-only fares on this route — call free
Flight time details
6,317 miles nonstop takes roughly 12h 51m 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
- RST — Rochester International Airport · Rochester, 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 RST
Frequently asked questions
How far is OSN from RST?
The flight distance from Osan (OSN) to Rochester (RST) is 6,317 miles (10,167 km, 5,490 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from OSN to RST?
A nonstop flight takes about 12h 51m 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 RST?
Nonstop service on OSN–RST 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 12h 51m nonstop estimate.
What is the time difference between Osan and Rochester?
Rochester is 14 hours behind Osan.
What is the cheapest way to fly from OSN to RST?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on OSN–RST that never appear on search engines, with no booking fees.
Why are some OSN to RST fares phone-only?
Consolidator contracts let us sell certain OSN–RST 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.