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OSN to PMH: distance & flight time
Osan (Osan Air Base) → Portsmouth (Greater Portsmouth Regional Airport)
6,857 mi
11,035 km · 5,958 nm
13h 55m
estimated nonstop flight time
—
time difference · heading northeast
See live OSN→PMH fares Phone-only fares on this route — call free
Flight time details
6,857 miles nonstop takes roughly 13h 55m gate to gate, flying northeast. 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
- PMH — Greater Portsmouth Regional Airport · Portsmouth, United States
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 PMH
- HTS · Tri-State/Milton J. Ferguson Field36 mi away
- ATO · Ohio University Snyder Field42 mi away
- ILN · Wilmington Airpark65 mi away
- LCK · Rickenbacker International Airport67 mi away
Frequently asked questions
How far is OSN from PMH?
The flight distance from Osan (OSN) to Portsmouth (PMH) is 6,857 miles (11,035 km, 5,958 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from OSN to PMH?
A nonstop flight takes about 13h 55m 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 PMH?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on OSN–PMH that never appear on search engines, with no booking fees.