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ASE to KSO: distance & flight time
Aspen (Aspen-Pitkin Co/Sardy Field) → Kastoria (Kastoria National Airport)
6,036 mi
9,714 km · 5,245 nm
12h 18m
estimated nonstop flight time
+9h
time difference · heading northeast
See live ASE→KSO fares Phone-only fares on this route — call free
Flight time details
6,036 miles nonstop takes roughly 12h 18m 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
- ASE — Aspen-Pitkin Co/Sardy Field · Aspen, United States
- KSO — Kastoria National Airport · Kastoria, 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 ASE
- EGE · Eagle County Regional Airport29 mi away
- GUC · Gunnison Crested Butte Regional Airport48 mi away
- RIL · Garfield County Regional Airport50 mi away
- MTJ · Montrose Regional Airport74 mi away
Near KSO
- KZI · Filippos Airport31 mi away
- IOA · Ioannina Airport57 mi away
- OHD · Ohrid St. Paul the Apostle Airport58 mi away
- LRA · Larisa Airport83 mi away
Frequently asked questions
How far is ASE from KSO?
The flight distance from Aspen (ASE) to Kastoria (KSO) is 6,036 miles (9,714 km, 5,245 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ASE to KSO?
A nonstop flight takes about 12h 18m 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 Aspen and Kastoria?
Kastoria is 9 hours ahead of Aspen.
What is the cheapest way to fly from ASE to KSO?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ASE–KSO that never appear on search engines, with no booking fees.