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KLU to WBU: distance & flight time
Klagenfurt (Klagenfurt Airport) → Boulder (Boulder Municipal Airport)
5,387 mi
8,670 km · 4,681 nm
11h 2m
estimated nonstop flight time
-8h
time difference · heading northwest
See live KLU→WBU fares Phone-only fares on this route — call free
Flight time details
5,387 miles nonstop takes roughly 11h 2m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 8-hour time set-back when reading arrival times on your ticket.
The two airports
- KLU — Klagenfurt Airport · Klagenfurt, Austria
- WBU — Boulder Municipal Airport · Boulder, 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 KLU
- LJU · Ljubljana Jože Pučnik Airport29 mi away
- GRZ · Graz Airport57 mi away
- MBX · Maribor Airport65 mi away
- TRS · Trieste–Friuli Venezia Giulia Airport70 mi away
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
Frequently asked questions
How far is KLU from WBU?
The flight distance from Klagenfurt (KLU) to Boulder (WBU) is 5,387 miles (8,670 km, 4,681 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from KLU to WBU?
A nonstop flight takes about 11h 2m 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 Klagenfurt and Boulder?
Boulder is 8 hours behind Klagenfurt.
What is the cheapest way to fly from KLU to WBU?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on KLU–WBU that never appear on search engines, with no booking fees.