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YAY to USM: distance & flight time
St. Anthony (St. Anthony Airport) → Ko Samui (Samui Airport)
7,992 mi
12,862 km · 6,945 nm
16h 8m
estimated nonstop flight time
+9.5h
time difference · heading northeast
See live YAY→USM fares Phone-only fares on this route — call free
Flight time details
7,992 miles nonstop takes roughly 16h 8m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 9.5-hour time gain when reading arrival times on your ticket.
The two airports
- YAY — St. Anthony Airport · St. Anthony, Canada
- 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 YAY
- YBX · Lourdes de Blanc Sablon Airport48 mi away
- YMH · Mary's Harbour Airport64 mi away
- YFX · St. Lewis (Fox Harbour) Airport70 mi away
- YHA · Port Hope Simpson Airport79 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 YAY from USM?
The flight distance from St. Anthony (YAY) to Ko Samui (USM) is 7,992 miles (12,862 km, 6,945 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from YAY to USM?
A nonstop flight takes about 16h 8m 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 St. Anthony and Ko Samui?
Ko Samui is 9.5 hours ahead of St. Anthony.
What is the cheapest way to fly from YAY to USM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on YAY–USM that never appear on search engines, with no booking fees.