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BUF to USM: distance & flight time
Buffalo (Buffalo Niagara International Airport) → Ko Samui (Samui Airport)
8,809 mi
14,177 km · 7,655 nm
17h 44m
estimated nonstop flight time
+12h
time difference · heading north
See live BUF→USM fares Phone-only fares on this route — call free
Flight time details
8,809 miles nonstop takes roughly 17h 44m 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
- BUF — Buffalo Niagara International Airport · Buffalo, 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 BUF
- IAG · Niagara Falls International Airport16 mi away
- YYZ · Lester B. Pearson International Airport68 mi away
- YCM · Niagara District Airport28 mi away
- DKK · Chautauqua County-Dunkirk Airport41 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 BUF from USM?
The flight distance from Buffalo (BUF) to Ko Samui (USM) is 8,809 miles (14,177 km, 7,655 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from BUF to USM?
A nonstop flight takes about 17h 44m 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 BUF to USM?
Nonstop service on BUF–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 44m nonstop estimate.
What is the time difference between Buffalo and Ko Samui?
Ko Samui is 12 hours ahead of Buffalo.
What is the cheapest way to fly from BUF to USM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on BUF–USM that never appear on search engines, with no booking fees.
Why are some BUF to USM fares phone-only?
Consolidator contracts let us sell certain BUF–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.