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UGN to OSN: distance & flight time
Chicago (Waukegan National Airport) → Osan (Osan Air Base)
6,520 mi
10,493 km · 5,666 nm
13h 15m
estimated nonstop flight time
+14h
time difference · heading northwest
See live UGN→OSN fares Phone-only fares on this route — call free
Flight time details
6,520 miles nonstop takes roughly 13h 15m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 14-hour time gain when reading arrival times on your ticket.
The two airports
- UGN — Waukegan National Airport · Chicago, United States
- 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 UGN
- ORD · Chicago O'Hare International Airport31 mi away
- ENW · Kenosha Regional Airport12 mi away
- PWK · Chicago Executive Airport21 mi away
- RAC · John H Batten Airport24 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 UGN from OSN?
The flight distance from Chicago (UGN) to Osan (OSN) is 6,520 miles (10,493 km, 5,666 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from UGN to OSN?
A nonstop flight takes about 13h 15m 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 Chicago and Osan?
Osan is 14 hours ahead of Chicago.
What is the cheapest way to fly from UGN to OSN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on UGN–OSN that never appear on search engines, with no booking fees.