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YSP to KLS: distance & flight time
Marathon (Marathon Airport) → Kelso (Southwest Washington Regional Airport)
1,701 mi
2,738 km · 1,479 nm
3h 48m
estimated nonstop flight time
-3h
time difference · heading west
See live YSP→KLS fares Phone-only fares on this route — call free
Flight time details
1,701 miles nonstop takes roughly 3h 48m gate to gate, flying west. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 3-hour time set-back when reading arrival times on your ticket.
The two airports
- YSP — Marathon Airport · Marathon, Canada
- 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 YSP
- YMG · Manitouwadge Airport32 mi away
- YGQ · Geraldton Greenstone Regional Airport76 mi away
- YHN · Hornepayne Municipal Airport78 mi away
- YXZ · Wawa Airport90 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 YSP from KLS?
The flight distance from Marathon (YSP) to Kelso (KLS) is 1,701 miles (2,738 km, 1,479 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from YSP to KLS?
A nonstop flight takes about 3h 48m 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 Marathon and Kelso?
Kelso is 3 hours behind Marathon.
What is the cheapest way to fly from YSP to KLS?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on YSP–KLS that never appear on search engines, with no booking fees.