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GRB to USM: distance & flight time
Green Bay (Austin Straubel International Airport) → Ko Samui (Samui Airport)
8,668 mi
13,951 km · 7,533 nm
17h 28m
estimated nonstop flight time
+12h
time difference · heading north
See live GRB→USM fares Phone-only fares on this route — call free
Flight time details
8,668 miles nonstop takes roughly 17h 28m 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
- GRB — Austin Straubel International Airport · Green Bay, 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 GRB
- ATW · Appleton International Airport25 mi away
- OSH · Wittman Regional Airport41 mi away
- MNM · Menominee Regional Airport50 mi away
- SBM · Sheboygan County Memorial Airport51 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 GRB from USM?
The flight distance from Green Bay (GRB) to Ko Samui (USM) is 8,668 miles (13,951 km, 7,533 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from GRB to USM?
A nonstop flight takes about 17h 28m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
Are there nonstop flights from GRB to USM?
Nonstop service on GRB–USM depends on the season and the day of week. Run the fare search on this page with the nonstop filter applied to see current direct options; when there is no nonstop, a single connection through a carrier hub adds roughly 2–4 hours to the 17h 28m nonstop estimate.
What is the time difference between Green Bay and Ko Samui?
Ko Samui is 12 hours ahead of Green Bay.
What is the cheapest way to fly from GRB to USM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on GRB–USM that never appear on search engines, with no booking fees.
Why are some GRB to USM fares phone-only?
Consolidator contracts let us sell certain GRB–USM tickets below the price airlines permit us to publish online, so those fares can only be quoted over the phone. Call the travel desk and an agent will check phone-only inventory for your dates.