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GYY to USM: distance & flight time
Gary (Gary Chicago International Airport) → Ko Samui (Samui Airport)
8,870 mi
14,275 km · 7,708 nm
17h 52m
estimated nonstop flight time
+12h
time difference · heading north
See live GYY→USM fares Phone-only fares on this route — call free
Flight time details
8,870 miles nonstop takes roughly 17h 52m gate to gate, flying north. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 12-hour time gain when reading arrival times on your ticket.
The two airports
- GYY — Gary Chicago International Airport · Gary, 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 GYY
- ORD · Chicago O'Hare International Airport36 mi away
- CGX · Chicago Meigs Airport20 mi away
- MDW · Chicago Midway International Airport21 mi away
- VPZ · Porter County Municipal Airport24 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 GYY from USM?
The flight distance from Gary (GYY) to Ko Samui (USM) is 8,870 miles (14,275 km, 7,708 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from GYY to USM?
A nonstop flight takes about 17h 52m 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 Gary and Ko Samui?
Ko Samui is 12 hours ahead of Gary.
What is the cheapest way to fly from GYY to USM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on GYY–USM that never appear on search engines, with no booking fees.