Need help booking?
Unpublished phone-only deals available
YSP to CEI: distance & flight time
Marathon (Marathon Airport) → Chiang Rai (Chiang Rai International Airport)
7,674 mi
12,350 km · 6,669 nm
15h 31m
estimated nonstop flight time
+11h
time difference · heading north
See live YSP→CEI fares Phone-only fares on this route — call free
Flight time details
7,674 miles nonstop takes roughly 15h 31m 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
- YSP — Marathon Airport · Marathon, 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 YSP
- YMG · Manitouwadge Airport32 mi away
- YGQ · Geraldton Greenstone Regional Airport76 mi away
- YHN · Hornepayne Municipal Airport78 mi away
- YXZ · Wawa Airport90 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 YSP from CEI?
The flight distance from Marathon (YSP) to Chiang Rai (CEI) is 7,674 miles (12,350 km, 6,669 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from YSP to CEI?
A nonstop flight takes about 15h 31m 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 Marathon and Chiang Rai?
Chiang Rai is 11 hours ahead of Marathon.
What is the cheapest way to fly from YSP to CEI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on YSP–CEI that never appear on search engines, with no booking fees.