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OSN to IAS: distance & flight time
Osan (Osan Air Base) → Iasi (Iaşi Airport)
4,787 mi
7,704 km · 4,160 nm
9h 51m
estimated nonstop flight time
-6h
time difference · heading northwest
See live OSN→IAS fares Phone-only fares on this route — call free
Flight time details
4,787 miles nonstop takes roughly 9h 51m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 6-hour time set-back when reading arrival times on your ticket.
The two airports
- OSN — Osan Air Base · Osan, South Korea
- IAS — Iaşi Airport · Iasi, Romania
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 IAS
- BZY · Bălți International Airport46 mi away
- BCM · Bacău Airport56 mi away
- KIV · Chişinău International Airport64 mi away
- SCV · Suceava Stefan cel Mare Airport69 mi away
Frequently asked questions
How far is OSN from IAS?
The flight distance from Osan (OSN) to Iasi (IAS) is 4,787 miles (7,704 km, 4,160 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from OSN to IAS?
A nonstop flight takes about 9h 51m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
Are there nonstop flights from OSN to IAS?
Nonstop service on OSN–IAS depends on the season and the day of week. Run the fare search on this page with the nonstop filter applied to see current direct options; when there is no nonstop, a single connection through a carrier hub adds roughly 2–4 hours to the 9h 51m nonstop estimate.
What is the time difference between Osan and Iasi?
Iasi is 6 hours behind Osan.
What is the cheapest way to fly from OSN to IAS?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on OSN–IAS that never appear on search engines, with no booking fees.
Why are some OSN to IAS fares phone-only?
Consolidator contracts let us sell certain OSN–IAS tickets below the price airlines permit us to publish online, so those fares can only be quoted over the phone. Call the travel desk and an agent will check phone-only inventory for your dates.