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OSN to RCO: distance & flight time
Osan (Osan Air Base) → Rochefort (Rochefort-Saint-Agnant (BA 721) Airport)
5,857 mi
9,427 km · 5,090 nm
11h 57m
estimated nonstop flight time
-7h
time difference · heading northwest
See live OSN→RCO fares Phone-only fares on this route — call free
Flight time details
5,857 miles nonstop takes roughly 11h 57m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 7-hour time set-back when reading arrival times on your ticket.
The two airports
- OSN — Osan Air Base · Osan, South Korea
- RCO — Rochefort-Saint-Agnant (BA 721) Airport · Rochefort, France
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 RCO
- RYN · Royan-Médis Airport18 mi away
- LRH · La Rochelle-Île de Ré Airport23 mi away
- CNG · Cognac-Châteaubernard (BA 709) Air Base36 mi away
- NIT · Niort-Souché Airport41 mi away
Frequently asked questions
How far is OSN from RCO?
The flight distance from Osan (OSN) to Rochefort (RCO) is 5,857 miles (9,427 km, 5,090 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from OSN to RCO?
A nonstop flight takes about 11h 57m 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 Rochefort?
Rochefort is 7 hours behind Osan.
What is the cheapest way to fly from OSN to RCO?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on OSN–RCO that never appear on search engines, with no booking fees.