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ASH to OSN: distance & flight time
Nashua (Boire Field) → Osan (Osan Air Base)
6,796 mi
10,937 km · 5,906 nm
13h 48m
estimated nonstop flight time
+13h
time difference · heading north
See live ASH→OSN fares Phone-only fares on this route — call free
Flight time details
6,796 miles nonstop takes roughly 13h 48m gate to gate, flying north. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 13-hour time gain when reading arrival times on your ticket.
The two airports
- ASH — Boire Field · Nashua, United States
- 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 ASH
- BOS · General Edward Lawrence Logan International Airport39 mi away
- MHT · Manchester-Boston Regional Airport11 mi away
- LWM · Lawrence Municipal Airport20 mi away
- BED · Laurence G Hanscom Field24 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 ASH from OSN?
The flight distance from Nashua (ASH) to Osan (OSN) is 6,796 miles (10,937 km, 5,906 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ASH to OSN?
A nonstop flight takes about 13h 48m 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 Nashua and Osan?
Osan is 13 hours ahead of Nashua.
What is the cheapest way to fly from ASH to OSN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ASH–OSN that never appear on search engines, with no booking fees.