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FNL to KLU: distance & flight time
Fort Collins (Northern Colorado Regional Airport) → Klagenfurt (Klagenfurt Airport)
5,358 mi
8,623 km · 4,656 nm
10h 58m
estimated nonstop flight time
+8h
time difference · heading northeast
See live FNL→KLU fares Phone-only fares on this route — call free
Flight time details
5,358 miles nonstop takes roughly 10h 58m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 8-hour time gain when reading arrival times on your ticket.
The two airports
- FNL — Northern Colorado Regional Airport · Fort Collins, United States
- KLU — Klagenfurt Airport · Klagenfurt, Austria
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 FNL
- DEN · Denver International Airport45 mi away
- GXY · Greeley–Weld County Airport20 mi away
- WBU · Boulder Municipal Airport31 mi away
- BJC · Rocky Mountain Metropolitan Airport38 mi away
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
Frequently asked questions
How far is FNL from KLU?
The flight distance from Fort Collins (FNL) to Klagenfurt (KLU) is 5,358 miles (8,623 km, 4,656 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from FNL to KLU?
A nonstop flight takes about 10h 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 Fort Collins and Klagenfurt?
Klagenfurt is 8 hours ahead of Fort Collins.
What is the cheapest way to fly from FNL to KLU?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on FNL–KLU that never appear on search engines, with no booking fees.