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OSN to HEA: distance & flight time
Osan (Osan Air Base) → Herat (Herat Airport)
3,571 mi
5,748 km · 3,103 nm
7h 28m
estimated nonstop flight time
-4.5h
time difference · heading west
See live OSN→HEA fares Phone-only fares on this route — call free
Flight time details
3,571 miles nonstop takes roughly 7h 28m gate to gate, flying west. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 4.5-hour time set-back when reading arrival times on your ticket.
The two airports
- OSN — Osan Air Base · Osan, South Korea
- HEA — Herat Airport · Herat, Afghanistan
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 HEA
- OAH · Shindand Airport57 mi away
- FAH · Farah Airport127 mi away
Frequently asked questions
How far is OSN from HEA?
The flight distance from Osan (OSN) to Herat (HEA) is 3,571 miles (5,748 km, 3,103 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from OSN to HEA?
A nonstop flight takes about 7h 28m 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 HEA?
Nonstop service on OSN–HEA 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 7h 28m nonstop estimate.
What is the time difference between Osan and Herat?
Herat is 4.5 hours behind Osan.
What is the cheapest way to fly from OSN to HEA?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on OSN–HEA that never appear on search engines, with no booking fees.
Why are some OSN to HEA fares phone-only?
Consolidator contracts let us sell certain OSN–HEA 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.