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HAN to OSN: distance & flight time
Hanoi (Noi Bai International Airport) → Osan (Osan Air Base)
1,678 mi
2,701 km · 1,459 nm
3h 45m
estimated nonstop flight time
+2h
time difference · heading northeast
See live HAN→OSN fares Phone-only fares on this route — call free
Flight time details
1,678 miles nonstop takes roughly 3h 45m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 2-hour time gain when reading arrival times on your ticket.
The two airports
- HAN — Noi Bai International Airport · Hanoi, Vietnam
- 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 HAN
- HPH · Cat Bi International Airport65 mi away
- SQH · Na-San Airport114 mi away
- NEU · Sam Neua Airport125 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 HAN from OSN?
The flight distance from Hanoi (HAN) to Osan (OSN) is 1,678 miles (2,701 km, 1,459 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from HAN to OSN?
A nonstop flight takes about 3h 45m 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 Hanoi and Osan?
Osan is 2 hours ahead of Hanoi.
What is the cheapest way to fly from HAN to OSN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on HAN–OSN that never appear on search engines, with no booking fees.