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USM to YSJ: distance & flight time
Ko Samui (Samui Airport) → St. John (Saint John Airport)
8,547 mi
13,754 km · 7,427 nm
17h 13m
estimated nonstop flight time
-10h
time difference · heading north
See live USM→YSJ fares Phone-only fares on this route — call free
Flight time details
8,547 miles nonstop takes roughly 17h 13m gate to gate, flying north. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 10-hour time set-back when reading arrival times on your ticket.
The two airports
- USM — Samui Airport · Ko Samui, Thailand
- YSJ — Saint John Airport · St. John, Canada
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 YSJ
- YFC · Fredericton Airport49 mi away
- YZX · CFB Greenwood53 mi away
- YDG · Digby / Annapolis Regional Airport53 mi away
- YQM · Greater Moncton International Airport80 mi away
Frequently asked questions
How far is USM from YSJ?
The flight distance from Ko Samui (USM) to St. John (YSJ) is 8,547 miles (13,754 km, 7,427 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from USM to YSJ?
A nonstop flight takes about 17h 13m 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 St. John?
St. John is 10 hours behind Ko Samui.
What is the cheapest way to fly from USM to YSJ?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on USM–YSJ that never appear on search engines, with no booking fees.