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GRF to YEC: distance & flight time
Fort Lewis (Gray Army Air Field) → Yechon (Yecheon Airbase)
5,184 mi
8,343 km · 4,505 nm
10h 38m
estimated nonstop flight time
+16h
time difference · heading northwest
See live GRF→YEC fares Phone-only fares on this route — call free
Flight time details
5,184 miles nonstop takes roughly 10h 38m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 16-hour time gain when reading arrival times on your ticket.
The two airports
- GRF — Gray Army Air Field · Fort Lewis, United States
- YEC — Yecheon Airbase · Yechon, 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 GRF
- SEA · Seattle Tacoma International Airport29 mi away
- TCM · McChord Air Force Base6 mi away
- TIW · Tacoma Narrows Airport13 mi away
- OLM · Olympia Regional Airport17 mi away
Near YEC
Frequently asked questions
How far is GRF from YEC?
The flight distance from Fort Lewis (GRF) to Yechon (YEC) is 5,184 miles (8,343 km, 4,505 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from GRF to YEC?
A nonstop flight takes about 10h 38m 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 Fort Lewis and Yechon?
Yechon is 16 hours ahead of Fort Lewis.
What is the cheapest way to fly from GRF to YEC?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on GRF–YEC that never appear on search engines, with no booking fees.