Need help booking?
Unpublished phone-only deals available
GRF to HMY: distance & flight time
Fort Lewis (Gray Army Air Field) → Seosan (Seosan Air Base)
5,248 mi
8,446 km · 4,561 nm
10h 45m
estimated nonstop flight time
—
time difference · heading northwest
See live GRF→HMY fares Phone-only fares on this route — call free
Flight time details
5,248 miles nonstop takes roughly 10h 45m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Both airports share the same local time, so schedules read exactly as flown.
The two airports
- GRF — Gray Army Air Field · Fort Lewis, United States
- HMY — Seosan Air Base · Seosan, 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 HMY
- ICN · Incheon International Airport53 mi away
- OSN · Osan Air Base40 mi away
- SWU · Suwon Airport47 mi away
- KUV · Kunsan Air Base56 mi away
Frequently asked questions
How far is GRF from HMY?
The flight distance from Fort Lewis (GRF) to Seosan (HMY) is 5,248 miles (8,446 km, 4,561 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from GRF to HMY?
A nonstop flight takes about 10h 45m 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 cheapest way to fly from GRF to HMY?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on GRF–HMY that never appear on search engines, with no booking fees.