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GMP to GAI: distance & flight time
Seoul (Gimpo International Airport) → Gaithersburg (Montgomery County Airpark)
6,921 mi
11,139 km · 6,015 nm
14h 2m
estimated nonstop flight time
-13h
time difference · heading north
See live GMP→GAI fares Phone-only fares on this route — call free
Flight time details
6,921 miles nonstop takes roughly 14h 2m gate to gate, flying north. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 13-hour time set-back when reading arrival times on your ticket.
The two airports
- GMP — Gimpo International Airport · Seoul, South Korea
- GAI — Montgomery County Airpark · Gaithersburg, 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 GAI
Frequently asked questions
How far is GMP from GAI?
The flight distance from Seoul (GMP) to Gaithersburg (GAI) is 6,921 miles (11,139 km, 6,015 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from GMP to GAI?
A nonstop flight takes about 14h 2m 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 Gaithersburg?
Gaithersburg is 13 hours behind Seoul.
What is the cheapest way to fly from GMP to GAI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on GMP–GAI that never appear on search engines, with no booking fees.