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USM to GRF: distance & flight time
Ko Samui (Samui Airport) → Fort Lewis (Gray Army Air Field)
7,730 mi
12,440 km · 6,717 nm
15h 37m
estimated nonstop flight time
-14h
time difference · heading northeast
See live USM→GRF fares Phone-only fares on this route — call free
Flight time details
7,730 miles nonstop takes roughly 15h 37m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 14-hour time set-back when reading arrival times on your ticket.
The two airports
- USM — Samui Airport · Ko Samui, Thailand
- GRF — Gray Army Air Field · Fort Lewis, United States
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 USM
- URT · Surat Thani Airport69 mi away
- NST · Nakhon Si Thammarat Airport70 mi away
- CJM · Chumphon Airport93 mi away
- UNN · Ranong Airport102 mi away
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
Frequently asked questions
How far is USM from GRF?
The flight distance from Ko Samui (USM) to Fort Lewis (GRF) is 7,730 miles (12,440 km, 6,717 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from USM to GRF?
A nonstop flight takes about 15h 37m 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 Ko Samui and Fort Lewis?
Fort Lewis is 14 hours behind Ko Samui.
What is the cheapest way to fly from USM to GRF?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on USM–GRF that never appear on search engines, with no booking fees.