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USM to ISM: distance & flight time
Ko Samui (Samui Airport) → Kissimmee (Kissimmee Gateway Airport)
9,821 mi
15,805 km · 8,534 nm
19h 43m
estimated nonstop flight time
-11h
time difference · heading north
See live USM→ISM fares Phone-only fares on this route — call free
Flight time details
9,821 miles nonstop takes roughly 19h 43m gate to gate, flying north. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 11-hour time set-back when reading arrival times on your ticket.
The two airports
- USM — Samui Airport · Ko Samui, Thailand
- ISM — Kissimmee Gateway Airport · Kissimmee, 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 ISM
- MCO · Orlando International Airport12 mi away
- ORL · Orlando Executive Airport19 mi away
- GIF · Winter Haven Regional Airport - Gilbert Field25 mi away
- TPA · Tampa International Airport70 mi away
Frequently asked questions
How far is USM from ISM?
The flight distance from Ko Samui (USM) to Kissimmee (ISM) is 9,821 miles (15,805 km, 8,534 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from USM to ISM?
A nonstop flight takes about 19h 43m 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 Kissimmee?
Kissimmee is 11 hours behind Ko Samui.
What is the cheapest way to fly from USM to ISM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on USM–ISM that never appear on search engines, with no booking fees.