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YST to CEI: distance & flight time
St. Theresa Point (St. Theresa Point Airport) → Chiang Rai (Chiang Rai International Airport)
7,263 mi
11,688 km · 6,311 nm
14h 42m
estimated nonstop flight time
+12h
time difference · heading north
See live YST→CEI fares Phone-only fares on this route — call free
Flight time details
7,263 miles nonstop takes roughly 14h 42m gate to gate, flying north. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 12-hour time gain when reading arrival times on your ticket.
The two airports
- YST — St. Theresa Point Airport · St. Theresa Point, Canada
- CEI — Chiang Rai International Airport · Chiang Rai, 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 YST
- YIV · Island Lake Airport8 mi away
- YGO · Gods Lake Narrows Airport51 mi away
- YRS · Red Sucker Lake Airport57 mi away
- ZGI · Gods River Airport75 mi away
Near CEI
- THL · Tachileik Airport37 mi away
- HOE · Ban Huoeisay Airport42 mi away
- MOG · Mong Hsat Airport56 mi away
- KET · Kengtung Airport95 mi away
Frequently asked questions
How far is YST from CEI?
The flight distance from St. Theresa Point (YST) to Chiang Rai (CEI) is 7,263 miles (11,688 km, 6,311 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from YST to CEI?
A nonstop flight takes about 14h 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 St. Theresa Point and Chiang Rai?
Chiang Rai is 12 hours ahead of St. Theresa Point.
What is the cheapest way to fly from YST to CEI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on YST–CEI that never appear on search engines, with no booking fees.