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OSN to LEN: distance & flight time
Osan (Osan Air Base) → Leon (Leon Airport)
6,179 mi
9,944 km · 5,369 nm
12h 35m
estimated nonstop flight time
-7h
time difference · heading northwest
See live OSN→LEN fares Phone-only fares on this route — call free
Flight time details
6,179 miles nonstop takes roughly 12h 35m 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
- LEN — Leon Airport · Leon, Spain
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 LEN
- OVD · Asturias Airport70 mi away
- VLL · Valladolid Airport74 mi away
- BGC · Bragança Airport74 mi away
- RGS · Burgos Airport105 mi away
Frequently asked questions
How far is OSN from LEN?
The flight distance from Osan (OSN) to Leon (LEN) is 6,179 miles (9,944 km, 5,369 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from OSN to LEN?
A nonstop flight takes about 12h 35m 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 Leon?
Leon is 7 hours behind Osan.
What is the cheapest way to fly from OSN to LEN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on OSN–LEN that never appear on search engines, with no booking fees.