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SOU to UNI: distance & flight time
Southampton (Southampton Airport) → Union Island (Union Island International Airport)
4,253 mi
6,845 km · 3,696 nm
8h 48m
estimated nonstop flight time
-5h
time difference · heading west
See live SOU→UNI fares Phone-only fares on this route — call free
Flight time details
4,253 miles nonstop takes roughly 8h 48m gate to gate, flying west. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 5-hour time set-back when reading arrival times on your ticket.
The two airports
- SOU — Southampton Airport · Southampton, United Kingdom
- 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 SOU
- LGW · London Gatwick Airport52 mi away
- LHR · London Heathrow Airport53 mi away
- QLA · Lasham Airport22 mi away
- BBP · Bembridge Airport22 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 SOU from UNI?
The flight distance from Southampton (SOU) to Union Island (UNI) is 4,253 miles (6,845 km, 3,696 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from SOU to UNI?
A nonstop flight takes about 8h 48m 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 Southampton and Union Island?
Union Island is 5 hours behind Southampton.
What is the cheapest way to fly from SOU to UNI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on SOU–UNI that never appear on search engines, with no booking fees.