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WBU to KLS: distance & flight time
Boulder (Boulder Municipal Airport) → Kelso (Southwest Washington Regional Airport)
983 mi
1,582 km · 854 nm
2h 36m
estimated nonstop flight time
-1h
time difference · heading northwest
See live WBU→KLS fares Phone-only fares on this route — call free
Flight time details
983 miles nonstop takes roughly 2h 36m gate to gate, flying northwest. 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
- WBU — Boulder Municipal Airport · Boulder, 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 WBU
- DEN · Denver International Airport32 mi away
- BJC · Rocky Mountain Metropolitan Airport11 mi away
- FNL · Northern Colorado Regional Airport31 mi away
- BFK · Buckley Air Force Base34 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 WBU from KLS?
The flight distance from Boulder (WBU) to Kelso (KLS) is 983 miles (1,582 km, 854 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from WBU to KLS?
A nonstop flight takes about 2h 36m 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 Boulder and Kelso?
Kelso is 1 hour behind Boulder.
What is the cheapest way to fly from WBU to KLS?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on WBU–KLS that never appear on search engines, with no booking fees.