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ACH to UNI: distance & flight time
Altenrhein (St Gallen Altenrhein Airport) → Union Island (Union Island International Airport)
4,693 mi
7,553 km · 4,078 nm
9h 40m
estimated nonstop flight time
-6h
time difference · heading west
See live ACH→UNI fares Phone-only fares on this route — call free
Flight time details
4,693 miles nonstop takes roughly 9h 40m 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
- ACH — St Gallen Altenrhein Airport · Altenrhein, Switzerland
- 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 ACH
- HOH · Hohenems-Dornbirn Airport9 mi away
- FDH · Friedrichshafen Airport13 mi away
- ZRH · Zürich Airport47 mi away
- FMM · Memmingen Allgau Airport47 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 ACH from UNI?
The flight distance from Altenrhein (ACH) to Union Island (UNI) is 4,693 miles (7,553 km, 4,078 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ACH to UNI?
A nonstop flight takes about 9h 40m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
Are there nonstop flights from ACH to UNI?
Nonstop service on ACH–UNI depends on the season and the day of week. Run the fare search on this page with the nonstop filter applied to see current direct options; when there is no nonstop, a single connection through a carrier hub adds roughly 2–4 hours to the 9h 40m nonstop estimate.
What is the time difference between Altenrhein and Union Island?
Union Island is 6 hours behind Altenrhein.
What is the cheapest way to fly from ACH to UNI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ACH–UNI that never appear on search engines, with no booking fees.
Why are some ACH to UNI fares phone-only?
Consolidator contracts let us sell certain ACH–UNI tickets below the price airlines permit us to publish online, so those fares can only be quoted over the phone. Call the travel desk and an agent will check phone-only inventory for your dates.