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KLS to MCS: distance & flight time
Kelso (Southwest Washington Regional Airport) → Monte Caseros (Monte Caseros Airport)
6,666 mi
10,728 km · 5,792 nm
13h 32m
estimated nonstop flight time
+4h
time difference · heading southeast
See live KLS→MCS fares Phone-only fares on this route — call free
Flight time details
6,666 miles nonstop takes roughly 13h 32m gate to gate, flying southeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 4-hour time gain when reading arrival times on your ticket.
The two airports
- KLS — Southwest Washington Regional Airport · Kelso, United States
- MCS — Monte Caseros Airport · Monte Caseros, Argentina
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 MCS
- UZU · Curuzu Cuatia Airport40 mi away
- URG · Rubem Berta Airport49 mi away
- AOL · Paso De Los Libres Airport50 mi away
- ATI · Artigas International Airport68 mi away
Frequently asked questions
How far is KLS from MCS?
The flight distance from Kelso (KLS) to Monte Caseros (MCS) is 6,666 miles (10,728 km, 5,792 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from KLS to MCS?
A nonstop flight takes about 13h 32m 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 Monte Caseros?
Monte Caseros is 4 hours ahead of Kelso.
What is the cheapest way to fly from KLS to MCS?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on KLS–MCS that never appear on search engines, with no booking fees.