Need help booking?
Unpublished phone-only deals available
ICN to SPF: distance & flight time
Seoul (Incheon International Airport) → Spearfish-South Dakota (Black Hills Airport-Clyde Ice Field)
5,965 mi
9,599 km · 5,183 nm
12h 10m
estimated nonstop flight time
-15h
time difference · heading northeast
See live ICN→SPF fares Phone-only fares on this route — call free
Flight time details
5,965 miles nonstop takes roughly 12h 10m 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
- ICN — Incheon 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 ICN
- GMP · Gimpo International Airport20 mi away
- SWU · Suwon Airport34 mi away
- SSN · Seoul Air Base (K-16)36 mi away
- OSN · Osan Air Base41 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 ICN from SPF?
The flight distance from Seoul (ICN) to Spearfish-South Dakota (SPF) is 5,965 miles (9,599 km, 5,183 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ICN to SPF?
A nonstop flight takes about 12h 10m 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 ICN to SPF?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ICN–SPF that never appear on search engines, with no booking fees.