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THS to KLS: distance & flight time
Sukhothai (Sukhothai Airport) → Kelso (Southwest Washington Regional Airport)
7,312 mi
11,768 km · 6,354 nm
14h 48m
estimated nonstop flight time
-14h
time difference · heading northeast
See live THS→KLS fares Phone-only fares on this route — call free
Flight time details
7,312 miles nonstop takes roughly 14h 48m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 14-hour time set-back when reading arrival times on your ticket.
The two airports
- THS — Sukhothai Airport · Sukhothai, Thailand
- KLS — Southwest Washington Regional Airport · Kelso, United States
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 THS
- PHS · Phitsanulok Airport44 mi away
- TKT · Tak Airport44 mi away
- PRH · Phrae Airport66 mi away
- LPT · Lampang Airport74 mi away
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
Frequently asked questions
How far is THS from KLS?
The flight distance from Sukhothai (THS) to Kelso (KLS) is 7,312 miles (11,768 km, 6,354 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from THS to KLS?
A nonstop flight takes about 14h 48m 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 Sukhothai and Kelso?
Kelso is 14 hours behind Sukhothai.
What is the cheapest way to fly from THS to KLS?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on THS–KLS that never appear on search engines, with no booking fees.