Need help booking?
Unpublished phone-only deals available
ZEM to USM: distance & flight time
Eastmain River (Eastmain River Airport) → Ko Samui (Samui Airport)
8,168 mi
13,145 km · 7,098 nm
16h 29m
estimated nonstop flight time
+11h
time difference · heading north
See live ZEM→USM fares Phone-only fares on this route — call free
Flight time details
8,168 miles nonstop takes roughly 16h 29m gate to gate, flying north. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 11-hour time gain when reading arrival times on your ticket.
The two airports
- ZEM — Eastmain River Airport · Eastmain River, 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 ZEM
- YKQ · Waskaganish Airport53 mi away
- YNC · Wemindji Airport56 mi away
- YGL · La Grande Rivière Airport102 mi away
- YNS · Nemiscau Airport108 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 ZEM from USM?
The flight distance from Eastmain River (ZEM) to Ko Samui (USM) is 8,168 miles (13,145 km, 7,098 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ZEM to USM?
A nonstop flight takes about 16h 29m 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 Eastmain River and Ko Samui?
Ko Samui is 11 hours ahead of Eastmain River.
What is the cheapest way to fly from ZEM to USM?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ZEM–USM that never appear on search engines, with no booking fees.