Need help booking?
Unpublished phone-only deals available
GAI to ICN: distance & flight time
Gaithersburg (Montgomery County Airpark) → Seoul (Incheon International Airport)
6,933 mi
11,158 km · 6,025 nm
14h 4m
estimated nonstop flight time
+13h
time difference · heading north
See live GAI→ICN fares Phone-only fares on this route — call free
Flight time details
6,933 miles nonstop takes roughly 14h 4m gate to gate, flying north. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 13-hour time gain when reading arrival times on your ticket.
The two airports
- GAI — Montgomery County Airpark · Gaithersburg, United States
- ICN — Incheon 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 GAI
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
Frequently asked questions
How far is GAI from ICN?
The flight distance from Gaithersburg (GAI) to Seoul (ICN) is 6,933 miles (11,158 km, 6,025 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from GAI to ICN?
A nonstop flight takes about 14h 4m 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 GAI to ICN?
Nonstop service on GAI–ICN 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 14h 4m nonstop estimate.
What is the time difference between Gaithersburg and Seoul?
Seoul is 13 hours ahead of Gaithersburg.
What is the cheapest way to fly from GAI to ICN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on GAI–ICN that never appear on search engines, with no booking fees.
Why are some GAI to ICN fares phone-only?
Consolidator contracts let us sell certain GAI–ICN 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.