Need help booking?
Unpublished phone-only deals available
GMP to SPF: distance & flight time
Seoul (Gimpo International Airport) → Spearfish-South Dakota (Black Hills Airport-Clyde Ice Field)
5,949 mi
9,575 km · 5,170 nm
12h 8m
estimated nonstop flight time
-15h
time difference · heading northeast
See live GMP→SPF fares Phone-only fares on this route — call free
Flight time details
5,949 miles nonstop takes roughly 12h 8m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 15-hour time set-back when reading arrival times on your ticket.
The two airports
- GMP — Gimpo International Airport · Seoul, 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 GMP
- ICN · Incheon International Airport20 mi away
- SSN · Seoul Air Base (K-16)19 mi away
- SWU · Suwon Airport25 mi away
- OSN · Osan Air Base35 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 GMP from SPF?
The flight distance from Seoul (GMP) to Spearfish-South Dakota (SPF) is 5,949 miles (9,575 km, 5,170 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from GMP to SPF?
A nonstop flight takes about 12h 8m 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 Seoul and Spearfish-South Dakota?
Spearfish-South Dakota is 15 hours behind Seoul.
What is the cheapest way to fly from GMP to SPF?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on GMP–SPF that never appear on search engines, with no booking fees.