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KLS to BIL: distance & flight time
Kelso (Southwest Washington Regional Airport) → Billings (Billings Logan International Airport)
689 mi
1,109 km · 599 nm
1h 58m
estimated nonstop flight time
+1h
time difference · heading east
See live KLS→BIL fares Phone-only fares on this route — call free
Flight time details
689 miles nonstop takes roughly 1h 58m gate to gate, flying east. 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
- BIL — Billings Logan International Airport · Billings, 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 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 BIL
- COD · Yellowstone Regional Airport92 mi away
- LVM · Mission Field92 mi away
- LWT · Lewistown Municipal Airport96 mi away
- SHR · Sheridan County Airport105 mi away
Frequently asked questions
How far is KLS from BIL?
The flight distance from Kelso (KLS) to Billings (BIL) is 689 miles (1,109 km, 599 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from KLS to BIL?
A nonstop flight takes about 1h 58m 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 Billings?
Billings is 1 hour ahead of Kelso.
What is the cheapest way to fly from KLS to BIL?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on KLS–BIL that never appear on search engines, with no booking fees.