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IAD to GMP: distance & flight time
Washington (Washington Dulles International Airport) → Seoul (Gimpo International Airport)
6,931 mi
11,154 km · 6,023 nm
14h 3m
estimated nonstop flight time
+13h
time difference · heading north
See live IAD→GMP fares Phone-only fares on this route — call free
Flight time details
6,931 miles nonstop takes roughly 14h 3m 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
- IAD — Washington Dulles International Airport · Washington, 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 IAD
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 IAD from GMP?
The flight distance from Washington (IAD) to Seoul (GMP) is 6,931 miles (11,154 km, 6,023 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from IAD to GMP?
A nonstop flight takes about 14h 3m 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 Washington and Seoul?
Seoul is 13 hours ahead of Washington.
What is the cheapest way to fly from IAD to GMP?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on IAD–GMP that never appear on search engines, with no booking fees.