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FNL to KSJ: distance & flight time
Fort Collins (Northern Colorado Regional Airport) → Kasos (Kasos Airport)
6,370 mi
10,251 km · 5,535 nm
12h 57m
estimated nonstop flight time
+9h
time difference · heading northeast
See live FNL→KSJ fares Phone-only fares on this route — call free
Flight time details
6,370 miles nonstop takes roughly 12h 57m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 9-hour time gain when reading arrival times on your ticket.
The two airports
- FNL — Northern Colorado Regional Airport · Fort Collins, United States
- KSJ — Kasos Airport · Kasos, Greece
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 KSJ
- AOK · Karpathos Airport13 mi away
- JSH · Sitia Airport48 mi away
- JTY · Astypalaia Airport85 mi away
- KGS · Kos Airport95 mi away
Frequently asked questions
How far is FNL from KSJ?
The flight distance from Fort Collins (FNL) to Kasos (KSJ) is 6,370 miles (10,251 km, 5,535 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from FNL to KSJ?
A nonstop flight takes about 12h 57m 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 Kasos?
Kasos is 9 hours ahead of Fort Collins.
What is the cheapest way to fly from FNL to KSJ?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on FNL–KSJ that never appear on search engines, with no booking fees.