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OSN to DEN: distance & flight time
Osan (Osan Air Base) → Denver (Denver International Airport)
6,190 mi
9,963 km · 5,379 nm
12h 36m
estimated nonstop flight time
-15h
time difference · heading northeast
See live OSN→DEN fares Phone-only fares on this route — call free
Flight time details
6,190 miles nonstop takes roughly 12h 36m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 15-hour time set-back when reading arrival times on your ticket.
The two airports
- OSN — Osan Air Base · Osan, South Korea
- DEN — Denver International Airport · Denver, United States
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 DEN
- BFK · Buckley Air Force Base12 mi away
- APA · Centennial Airport22 mi away
- BJC · Rocky Mountain Metropolitan Airport24 mi away
- WBU · Boulder Municipal Airport32 mi away
Frequently asked questions
How far is OSN from DEN?
The flight distance from Osan (OSN) to Denver (DEN) is 6,190 miles (9,963 km, 5,379 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from OSN to DEN?
A nonstop flight takes about 12h 36m 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 Denver?
Denver is 15 hours behind Osan.
What is the cheapest way to fly from OSN to DEN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on OSN–DEN that never appear on search engines, with no booking fees.