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GYY to OSN: distance & flight time
Gary (Gary Chicago International Airport) → Osan (Osan Air Base)
6,580 mi
10,590 km · 5,718 nm
13h 22m
estimated nonstop flight time
+14h
time difference · heading northwest
See live GYY→OSN fares Phone-only fares on this route — call free
Flight time details
6,580 miles nonstop takes roughly 13h 22m 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
- GYY — Gary Chicago International Airport · Gary, 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 GYY
- ORD · Chicago O'Hare International Airport36 mi away
- CGX · Chicago Meigs Airport20 mi away
- MDW · Chicago Midway International Airport21 mi away
- VPZ · Porter County Municipal 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 GYY from OSN?
The flight distance from Gary (GYY) to Osan (OSN) is 6,580 miles (10,590 km, 5,718 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from GYY to OSN?
A nonstop flight takes about 13h 22m 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 GYY to OSN?
Nonstop service on GYY–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 22m nonstop estimate.
What is the time difference between Gary and Osan?
Osan is 14 hours ahead of Gary.
What is the cheapest way to fly from GYY to OSN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on GYY–OSN that never appear on search engines, with no booking fees.
Why are some GYY to OSN fares phone-only?
Consolidator contracts let us sell certain GYY–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.