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KLS to SLP: distance & flight time
Kelso (Southwest Washington Regional Airport) → San Luis Potosi (Ponciano Arriaga International Airport)
2,058 mi
3,311 km · 1,788 nm
4h 30m
estimated nonstop flight time
+1h
time difference · heading southeast
See live KLS→SLP fares Phone-only fares on this route — call free
Flight time details
2,058 miles nonstop takes roughly 4h 30m gate to gate, flying southeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 1-hour time gain when reading arrival times on your ticket.
The two airports
- KLS — Southwest Washington Regional Airport · Kelso, United States
- SLP — Ponciano Arriaga International Airport · San Luis Potosi, Mexico
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 SLP
Frequently asked questions
How far is KLS from SLP?
The flight distance from Kelso (KLS) to San Luis Potosi (SLP) is 2,058 miles (3,311 km, 1,788 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from KLS to SLP?
A nonstop flight takes about 4h 30m 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 San Luis Potosi?
San Luis Potosi is 1 hour ahead of Kelso.
What is the cheapest way to fly from KLS to SLP?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on KLS–SLP that never appear on search engines, with no booking fees.