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SLD to UNI: distance & flight time
Sliac (Sliač Airport) → Union Island (Union Island International Airport)
5,138 mi
8,268 km · 4,464 nm
10h 32m
estimated nonstop flight time
-6h
time difference · heading west
See live SLD→UNI fares Phone-only fares on this route — call free
Flight time details
5,138 miles nonstop takes roughly 10h 32m gate to gate, flying west. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 6-hour time set-back when reading arrival times on your ticket.
The two airports
- SLD — Sliač Airport · Sliac, Slovakia
- 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 SLD
- ILZ · Žilina Airport47 mi away
- TAT · Poprad-Tatry Airport59 mi away
- PZY · Piešťany Airport60 mi away
- UHE · Kunovice Airport82 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 SLD from UNI?
The flight distance from Sliac (SLD) to Union Island (UNI) is 5,138 miles (8,268 km, 4,464 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from SLD to UNI?
A nonstop flight takes about 10h 32m 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 Sliac and Union Island?
Union Island is 6 hours behind Sliac.
What is the cheapest way to fly from SLD to UNI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on SLD–UNI that never appear on search engines, with no booking fees.