Need help booking?
Unpublished phone-only deals available
ASM to OSN: distance & flight time
Asmara (Asmara International Airport) → Osan (Osan Air Base)
5,485 mi
8,827 km · 4,766 nm
11h 13m
estimated nonstop flight time
+6h
time difference · heading northeast
See live ASM→OSN fares Phone-only fares on this route — call free
Flight time details
5,485 miles nonstop takes roughly 11h 13m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 6-hour time gain when reading arrival times on your ticket.
The two airports
- ASM — Asmara International Airport · Asmara, Eritrea
- 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 ASM
- MSW · Massawa International Airport40 mi away
- AXU · Axum Airport80 mi away
- MQX · Mekele Airport133 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 ASM from OSN?
The flight distance from Asmara (ASM) to Osan (OSN) is 5,485 miles (8,827 km, 4,766 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ASM to OSN?
A nonstop flight takes about 11h 13m 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 Asmara and Osan?
Osan is 6 hours ahead of Asmara.
What is the cheapest way to fly from ASM to OSN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ASM–OSN that never appear on search engines, with no booking fees.