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HMY to SPF: distance & flight time
Seosan (Seosan Air Base) → Spearfish-South Dakota (Black Hills Airport-Clyde Ice Field)
6,008 mi
9,669 km · 5,221 nm
12h 15m
estimated nonstop flight time
—
time difference · heading northeast
See live HMY→SPF fares Phone-only fares on this route — call free
Flight time details
6,008 miles nonstop takes roughly 12h 15m 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
- HMY — Seosan Air Base · Seosan, South Korea
- SPF — Black Hills Airport-Clyde Ice Field · Spearfish-South Dakota, 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 HMY
- ICN · Incheon International Airport53 mi away
- OSN · Osan Air Base40 mi away
- SWU · Suwon Airport47 mi away
- KUV · Kunsan Air Base56 mi away
Near SPF
- RCA · Ellsworth Air Force Base41 mi away
- RAP · Rapid City Regional Airport47 mi away
- GCC · Gillette Campbell County Airport87 mi away
- CDR · Chadron Municipal Airport119 mi away
Frequently asked questions
How far is HMY from SPF?
The flight distance from Seosan (HMY) to Spearfish-South Dakota (SPF) is 6,008 miles (9,669 km, 5,221 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from HMY to SPF?
A nonstop flight takes about 12h 15m 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 HMY to SPF?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on HMY–SPF that never appear on search engines, with no booking fees.