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KLS to CEI: distance & flight time
Kelso (Southwest Washington Regional Airport) → Chiang Rai (Chiang Rai International Airport)
7,146 mi
11,501 km · 6,210 nm
14h 29m
estimated nonstop flight time
+14h
time difference · heading northwest
See live KLS→CEI fares Phone-only fares on this route — call free
Flight time details
7,146 miles nonstop takes roughly 14h 29m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 14-hour time gain when reading arrival times on your ticket.
The two airports
- KLS — Southwest Washington Regional Airport · Kelso, United States
- 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 KLS
- PDX · Portland International Airport39 mi away
- CLS · Chehalis Centralia Airport39 mi away
- HIO · Portland Hillsboro Airport40 mi away
- TTD · Portland Troutdale Airport46 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 KLS from CEI?
The flight distance from Kelso (KLS) to Chiang Rai (CEI) is 7,146 miles (11,501 km, 6,210 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from KLS to CEI?
A nonstop flight takes about 14h 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 Kelso and Chiang Rai?
Chiang Rai is 14 hours ahead of Kelso.
What is the cheapest way to fly from KLS to CEI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on KLS–CEI that never appear on search engines, with no booking fees.