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ECA to OSN: distance & flight time
East Tawas (Iosco County Airport) → Osan (Osan Air Base)
6,499 mi
10,459 km · 5,647 nm
13h 13m
estimated nonstop flight time
+13h
time difference · heading northwest
See live ECA→OSN fares Phone-only fares on this route — call free
Flight time details
6,499 miles nonstop takes roughly 13h 13m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 13-hour time gain when reading arrival times on your ticket.
The two airports
- ECA — Iosco County Airport · East Tawas, 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 ECA
- OSC · Oscoda Wurtsmith Airport10 mi away
- APN · Alpena County Regional Airport53 mi away
- GDW · Gladwin Zettel Memorial Airport57 mi away
- HTL · Roscommon County - Blodgett Memorial Airport62 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 ECA from OSN?
The flight distance from East Tawas (ECA) to Osan (OSN) is 6,499 miles (10,459 km, 5,647 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ECA to OSN?
A nonstop flight takes about 13h 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 East Tawas and Osan?
Osan is 13 hours ahead of East Tawas.
What is the cheapest way to fly from ECA to OSN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ECA–OSN that never appear on search engines, with no booking fees.