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OSN to YCM: distance & flight time
Osan (Osan Air Base) → Saint Catherines (Niagara District Airport)
6,651 mi
10,704 km · 5,779 nm
13h 30m
estimated nonstop flight time
-13h
time difference · heading north
See live OSN→YCM 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 set-back when reading arrival times on your ticket.
The two airports
- OSN — Osan Air Base · Osan, South Korea
- YCM — Niagara District Airport · Saint Catherines, Canada
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 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
Frequently asked questions
How far is OSN from YCM?
The flight distance from Osan (OSN) to Saint Catherines (YCM) 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 OSN to YCM?
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.
What is the time difference between Osan and Saint Catherines?
Saint Catherines is 13 hours behind Osan.
What is the cheapest way to fly from OSN to YCM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on OSN–YCM that never appear on search engines, with no booking fees.