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KOP to KLS: distance & flight time
Nakhon Phanom (Nakhon Phanom Airport) → Kelso (Southwest Washington Regional Airport)
7,142 mi
11,494 km · 6,206 nm
14h 28m
estimated nonstop flight time
-14h
time difference · heading northeast
See live KOP→KLS fares Phone-only fares on this route — call free
Flight time details
7,142 miles nonstop takes roughly 14h 28m 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
- KOP — Nakhon Phanom Airport · Nakhon Phanom, 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 KOP
- SNO · Sakon Nakhon Airport37 mi away
- ZVK · Savannakhet Airport58 mi away
- ROI · Roi Et Airport105 mi away
- VII · Vinh Airport115 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 KOP from KLS?
The flight distance from Nakhon Phanom (KOP) to Kelso (KLS) is 7,142 miles (11,494 km, 6,206 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from KOP to KLS?
A nonstop flight takes about 14h 28m 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 Nakhon Phanom and Kelso?
Kelso is 14 hours behind Nakhon Phanom.
What is the cheapest way to fly from KOP to KLS?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on KOP–KLS that never appear on search engines, with no booking fees.