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GMP to STL: distance & flight time
Seoul (Gimpo International Airport) → St. Louis (St Louis Lambert International Airport)
6,659 mi
10,717 km · 5,787 nm
13h 31m
estimated nonstop flight time
-14h
time difference · heading northeast
See live GMP→STL fares Phone-only fares on this route — call free
Flight time details
6,659 miles nonstop takes roughly 13h 31m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 14-hour time set-back when reading arrival times on your ticket.
The two airports
- GMP — Gimpo International Airport · Seoul, South Korea
- STL — St Louis Lambert International Airport · St. Louis, 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 STL
- SUS · Spirit of St Louis Airport16 mi away
- ALN · St Louis Regional Airport20 mi away
- BLV · Scott AFB/Midamerica Airport32 mi away
- SPI · Abraham Lincoln Capital Airport84 mi away
Frequently asked questions
How far is GMP from STL?
The flight distance from Seoul (GMP) to St. Louis (STL) is 6,659 miles (10,717 km, 5,787 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from GMP to STL?
A nonstop flight takes about 13h 31m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
Are there nonstop flights from GMP to STL?
Nonstop service on GMP–STL depends on the season and the day of week. Run the fare search on this page with the nonstop filter applied to see current direct options; when there is no nonstop, a single connection through a carrier hub adds roughly 2–4 hours to the 13h 31m nonstop estimate.
What is the time difference between Seoul and St. Louis?
St. Louis is 14 hours behind Seoul.
What is the cheapest way to fly from GMP to STL?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on GMP–STL that never appear on search engines, with no booking fees.
Why are some GMP to STL fares phone-only?
Consolidator contracts let us sell certain GMP–STL tickets below the price airlines permit us to publish online, so those fares can only be quoted over the phone. Call the travel desk and an agent will check phone-only inventory for your dates.