Need help booking?
Unpublished phone-only deals available
GRF to KGS: distance & flight time
Fort Lewis (Gray Army Air Field) → Kos (Kos Airport)
6,346 mi
10,212 km · 5,514 nm
12h 55m
estimated nonstop flight time
+10h
time difference · heading northeast
See live GRF→KGS fares Phone-only fares on this route — call free
Flight time details
6,346 miles nonstop takes roughly 12h 55m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 10-hour time gain when reading arrival times on your ticket.
The two airports
- GRF — Gray Army Air Field · Fort Lewis, United States
- KGS — Kos Airport · Kos, Greece
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 KGS
- JKL · Kalymnos Airport14 mi away
- LRS · Leros Airport31 mi away
- BXN · Imsık Airport40 mi away
- JTY · Astypalaia Airport42 mi away
Frequently asked questions
How far is GRF from KGS?
The flight distance from Fort Lewis (GRF) to Kos (KGS) is 6,346 miles (10,212 km, 5,514 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from GRF to KGS?
A nonstop flight takes about 12h 55m 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 Kos?
Kos is 10 hours ahead of Fort Lewis.
What is the cheapest way to fly from GRF to KGS?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on GRF–KGS that never appear on search engines, with no booking fees.