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OSN to AOU: distance & flight time
Osan (Osan Air Base) → Attopeu (Attopeu Airport)
1,977 mi
3,181 km · 1,718 nm
4h 21m
estimated nonstop flight time
—
time difference · heading southwest
See live OSN→AOU fares Phone-only fares on this route — call free
Flight time details
1,977 miles nonstop takes roughly 4h 21m gate to gate, flying southwest. Add 45–90 minutes per connection if there's no nonstop service. Both airports share the same local time, so schedules read exactly as flown.
The two airports
- OSN — Osan Air Base · Osan, South Korea
- AOU — Attopeu Airport · Attopeu, Laos
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 AOU
- VNA · Saravane Airport68 mi away
- PKZ · Pakse International Airport73 mi away
- RBE · Ratanakiri Airport76 mi away
- PXU · Pleiku Airport98 mi away
Frequently asked questions
How far is OSN from AOU?
The flight distance from Osan (OSN) to Attopeu (AOU) is 1,977 miles (3,181 km, 1,718 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from OSN to AOU?
A nonstop flight takes about 4h 21m 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 cheapest way to fly from OSN to AOU?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on OSN–AOU that never appear on search engines, with no booking fees.