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OSN to BST: distance & flight time
Osan (Osan Air Base) → Lashkar Gah (Bost Airport)
3,532 mi
5,684 km · 3,069 nm
7h 23m
estimated nonstop flight time
-4.5h
time difference · heading west
See live OSN→BST fares Phone-only fares on this route — call free
Flight time details
3,532 miles nonstop takes roughly 7h 23m 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
- BST — Bost Airport · Lashkar Gah, 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 BST
- OAZ · Camp Bastion Airport23 mi away
- KDH · Kandahar Airport87 mi away
- TII · Tarin Kowt Airport114 mi away
- FAH · Farah Airport140 mi away
Frequently asked questions
How far is OSN from BST?
The flight distance from Osan (OSN) to Lashkar Gah (BST) is 3,532 miles (5,684 km, 3,069 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from OSN to BST?
A nonstop flight takes about 7h 23m 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 BST?
Nonstop service on OSN–BST 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 23m nonstop estimate.
What is the time difference between Osan and Lashkar Gah?
Lashkar Gah is 4.5 hours behind Osan.
What is the cheapest way to fly from OSN to BST?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on OSN–BST that never appear on search engines, with no booking fees.
Why are some OSN to BST fares phone-only?
Consolidator contracts let us sell certain OSN–BST 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.