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OSP to KLS: distance & flight time
Slupsk (Redzikowo Air Base) → Kelso (Southwest Washington Regional Airport)
5,103 mi
8,212 km · 4,434 nm
10h 28m
estimated nonstop flight time
-9h
time difference · heading northwest
See live OSP→KLS fares Phone-only fares on this route — call free
Flight time details
5,103 miles nonstop takes roughly 10h 28m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 9-hour time set-back when reading arrival times on your ticket.
The two airports
- OSP — Redzikowo Air Base · Slupsk, Poland
- 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 OSP
- GDN · Gdańsk Lech Wałęsa Airport55 mi away
- QYD · Oksywie Military Air Base57 mi away
- RNN · Bornholm Airport102 mi away
- BZG · Bydgoszcz Ignacy Jan Paderewski Airport102 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 OSP from KLS?
The flight distance from Slupsk (OSP) to Kelso (KLS) is 5,103 miles (8,212 km, 4,434 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from OSP to KLS?
A nonstop flight takes about 10h 28m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
Are there nonstop flights from OSP to KLS?
Nonstop service on OSP–KLS depends on the season and the day of week. Run the fare search on this page with the nonstop filter applied to see current direct options; when there is no nonstop, a single connection through a carrier hub adds roughly 2–4 hours to the 10h 28m nonstop estimate.
What is the time difference between Slupsk and Kelso?
Kelso is 9 hours behind Slupsk.
What is the cheapest way to fly from OSP to KLS?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on OSP–KLS that never appear on search engines, with no booking fees.
Why are some OSP to KLS fares phone-only?
Consolidator contracts let us sell certain OSP–KLS tickets below the price airlines permit us to publish online, so those fares can only be quoted over the phone. Call the travel desk and an agent will check phone-only inventory for your dates.