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DED to OSN: distance & flight time
Dehra Dun (Dehradun Airport) → Osan (Osan Air Base)
2,819 mi
4,537 km · 2,450 nm
6h
estimated nonstop flight time
+3.5h
time difference · heading northeast
See live DED→OSN fares Phone-only fares on this route — call free
Flight time details
2,819 miles nonstop takes roughly 6h gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 3.5-hour time gain when reading arrival times on your ticket.
The two airports
- DED — Dehradun Airport · Dehra Dun, India
- 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 DED
- IXC · Chandigarh Airport89 mi away
- SLV · Shimla Airport90 mi away
- PGH · Pantnagar Airport111 mi away
- DEL · Indira Gandhi International Airport130 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 DED from OSN?
The flight distance from Dehra Dun (DED) to Osan (OSN) is 2,819 miles (4,537 km, 2,450 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from DED to OSN?
A nonstop flight takes about 6h 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 Dehra Dun and Osan?
Osan is 3.5 hours ahead of Dehra Dun.
What is the cheapest way to fly from DED to OSN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on DED–OSN that never appear on search engines, with no booking fees.