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USM to CYI: distance & flight time
Ko Samui (Samui Airport) → Chiayi (Chiayi Airport)
1,651 mi
2,657 km · 1,435 nm
3h 42m
estimated nonstop flight time
+1h
time difference · heading northeast
See live USM→CYI fares Phone-only fares on this route — call free
Flight time details
1,651 miles nonstop takes roughly 3h 42m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 1-hour time gain when reading arrival times on your ticket.
The two airports
- USM — Samui Airport · Ko Samui, Thailand
- CYI — Chiayi Airport · Chiayi, Taiwan
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 CYI
- TNN · Tainan Airport37 mi away
- MZG · Makung Airport49 mi away
- PIF · Pingtung North Airport53 mi away
- TXG · Taichung Airport53 mi away
Frequently asked questions
How far is USM from CYI?
The flight distance from Ko Samui (USM) to Chiayi (CYI) is 1,651 miles (2,657 km, 1,435 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from USM to CYI?
A nonstop flight takes about 3h 42m 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 Chiayi?
Chiayi is 1 hour ahead of Ko Samui.
What is the cheapest way to fly from USM to CYI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on USM–CYI that never appear on search engines, with no booking fees.