Need help booking?
Unpublished phone-only deals available
KSJ to UNI: distance & flight time
Kasos (Kasos Airport) → Union Island (Union Island International Airport)
5,623 mi
9,050 km · 4,887 nm
11h 30m
estimated nonstop flight time
-7h
time difference · heading west
See live KSJ→UNI fares Phone-only fares on this route — call free
Flight time details
5,623 miles nonstop takes roughly 11h 30m gate to gate, flying west. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 7-hour time set-back when reading arrival times on your ticket.
The two airports
- KSJ — Kasos Airport · Kasos, Greece
- UNI — Union Island International Airport · Union Island, Saint Vincent and the Grenadines
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 KSJ
- AOK · Karpathos Airport13 mi away
- JSH · Sitia Airport48 mi away
- JTY · Astypalaia Airport85 mi away
- KGS · Kos Airport95 mi away
Near UNI
- CIW · Canouan Airport8 mi away
- MQS · Mustique Airport25 mi away
- BQU · J F Mitchell Airport29 mi away
- SVD · Argyle International Airport42 mi away
Frequently asked questions
How far is KSJ from UNI?
The flight distance from Kasos (KSJ) to Union Island (UNI) is 5,623 miles (9,050 km, 4,887 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from KSJ to UNI?
A nonstop flight takes about 11h 30m 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 Kasos and Union Island?
Union Island is 7 hours behind Kasos.
What is the cheapest way to fly from KSJ to UNI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on KSJ–UNI that never appear on search engines, with no booking fees.