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GDW to USM: distance & flight time
Gladwin (Gladwin Zettel Memorial Airport) → Ko Samui (Samui Airport)
8,728 mi
14,047 km · 7,585 nm
17h 35m
estimated nonstop flight time
+11h
time difference · heading north
See live GDW→USM fares Phone-only fares on this route — call free
Flight time details
8,728 miles nonstop takes roughly 17h 35m gate to gate, flying north. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 11-hour time gain when reading arrival times on your ticket.
The two airports
- GDW — Gladwin Zettel Memorial Airport · Gladwin, United States
- USM — Samui Airport · Ko Samui, Thailand
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 GDW
- HTL · Roscommon County - Blodgett Memorial Airport29 mi away
- MBS · MBS International Airport36 mi away
- AMN · Gratiot Community Airport46 mi away
- ECA · Iosco County Airport57 mi away
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
Frequently asked questions
How far is GDW from USM?
The flight distance from Gladwin (GDW) to Ko Samui (USM) is 8,728 miles (14,047 km, 7,585 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from GDW to USM?
A nonstop flight takes about 17h 35m 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 Gladwin and Ko Samui?
Ko Samui is 11 hours ahead of Gladwin.
What is the cheapest way to fly from GDW to USM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on GDW–USM that never appear on search engines, with no booking fees.