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DPA to OSN: distance & flight time
West Chicago (Dupage Airport) → Osan (Osan Air Base)
6,543 mi
10,529 km · 5,685 nm
13h 18m
estimated nonstop flight time
+14h
time difference · heading northwest
See live DPA→OSN fares Phone-only fares on this route — call free
Flight time details
6,543 miles nonstop takes roughly 13h 18m 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
- DPA — Dupage Airport · West 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 DPA
- ORD · Chicago O'Hare International Airport18 mi away
- LOT · Lewis University Airport22 mi away
- PWK · Chicago Executive Airport23 mi away
- MDW · Chicago Midway International Airport27 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 DPA from OSN?
The flight distance from West Chicago (DPA) to Osan (OSN) is 6,543 miles (10,529 km, 5,685 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from DPA to OSN?
A nonstop flight takes about 13h 18m 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 West Chicago and Osan?
Osan is 14 hours ahead of West Chicago.
What is the cheapest way to fly from DPA to OSN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on DPA–OSN that never appear on search engines, with no booking fees.