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KLS to SLD: distance & flight time
Kelso (Southwest Washington Regional Airport) → Sliac (Sliač Airport)
5,503 mi
8,855 km · 4,782 nm
11h 15m
estimated nonstop flight time
+9h
time difference · heading northeast
See live KLS→SLD fares Phone-only fares on this route — call free
Flight time details
5,503 miles nonstop takes roughly 11h 15m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 9-hour time gain when reading arrival times on your ticket.
The two airports
- KLS — Southwest Washington Regional Airport · Kelso, United States
- SLD — Sliač Airport · Sliac, Slovakia
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 SLD
- ILZ · Žilina Airport47 mi away
- TAT · Poprad-Tatry Airport59 mi away
- PZY · Piešťany Airport60 mi away
- UHE · Kunovice Airport82 mi away
Frequently asked questions
How far is KLS from SLD?
The flight distance from Kelso (KLS) to Sliac (SLD) is 5,503 miles (8,855 km, 4,782 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from KLS to SLD?
A nonstop flight takes about 11h 15m 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 Sliac?
Sliac is 9 hours ahead of Kelso.
What is the cheapest way to fly from KLS to SLD?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on KLS–SLD that never appear on search engines, with no booking fees.