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IDA to KLS: distance & flight time
Idaho Falls (Idaho Falls Regional Airport) → Kelso (Southwest Washington Regional Airport)
560 mi
901 km · 486 nm
1h 41m
estimated nonstop flight time
-1h
time difference · heading west
See live IDA→KLS fares Phone-only fares on this route — call free
Flight time details
560 miles nonstop takes roughly 1h 41m gate to gate, flying west. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 1-hour time set-back when reading arrival times on your ticket.
The two airports
- IDA — Idaho Falls Regional Airport · Idaho Falls, United States
- 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 IDA
- PIH · Pocatello Regional Airport49 mi away
- JAC · Jackson Hole Airport67 mi away
- WYS · Yellowstone Airport94 mi away
- BYI · Burley Municipal Airport109 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 IDA from KLS?
The flight distance from Idaho Falls (IDA) to Kelso (KLS) is 560 miles (901 km, 486 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from IDA to KLS?
A nonstop flight takes about 1h 41m 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 Idaho Falls and Kelso?
Kelso is 1 hour behind Idaho Falls.
What is the cheapest way to fly from IDA to KLS?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on IDA–KLS that never appear on search engines, with no booking fees.