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YCM to OSN: distance & flight time
Saint Catherines (Niagara District Airport) → Osan (Osan Air Base)
6,651 mi
10,704 km · 5,779 nm
13h 30m
estimated nonstop flight time
+13h
time difference · heading north
See live YCM→OSN fares Phone-only fares on this route — call free
Flight time details
6,651 miles nonstop takes roughly 13h 30m gate to gate, flying north. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 13-hour time gain when reading arrival times on your ticket.
The two airports
- YCM — Niagara District Airport · Saint Catherines, Canada
- OSN — Osan Air Base · Osan, South Korea
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 YCM
- YYZ · Lester B. Pearson International Airport41 mi away
- IAG · Niagara Falls International Airport13 mi away
- BUF · Buffalo Niagara International Airport28 mi away
- DU9 · Dunnville Airport31 mi away
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
Frequently asked questions
How far is YCM from OSN?
The flight distance from Saint Catherines (YCM) to Osan (OSN) is 6,651 miles (10,704 km, 5,779 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from YCM to OSN?
A nonstop flight takes about 13h 30m 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 YCM to OSN?
Nonstop service on YCM–OSN 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 13h 30m nonstop estimate.
What is the time difference between Saint Catherines and Osan?
Osan is 13 hours ahead of Saint Catherines.
What is the cheapest way to fly from YCM to OSN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on YCM–OSN that never appear on search engines, with no booking fees.
Why are some YCM to OSN fares phone-only?
Consolidator contracts let us sell certain YCM–OSN 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.