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STK to GMP: distance & flight time
Sterling (Sterling Municipal Airport) → Seoul (Gimpo International Airport)
6,177 mi
9,941 km · 5,368 nm
12h 35m
estimated nonstop flight time
+15h
time difference · heading northwest
See live STK→GMP fares Phone-only fares on this route — call free
Flight time details
6,177 miles nonstop takes roughly 12h 35m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 15-hour time gain when reading arrival times on your ticket.
The two airports
- STK — Sterling Municipal Airport · Sterling, United States
- GMP — Gimpo International Airport · Seoul, 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 STK
- AKO · Colorado Plains Regional Airport30 mi away
- SNY · Sidney Municipal-Lloyd W Carr Field37 mi away
- DEN · Denver International Airport91 mi away
- GXY · Greeley–Weld County Airport73 mi away
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
Frequently asked questions
How far is STK from GMP?
The flight distance from Sterling (STK) to Seoul (GMP) is 6,177 miles (9,941 km, 5,368 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from STK to GMP?
A nonstop flight takes about 12h 35m 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 Sterling and Seoul?
Seoul is 15 hours ahead of Sterling.
What is the cheapest way to fly from STK to GMP?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on STK–GMP that never appear on search engines, with no booking fees.