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SLU to ACH: distance & flight time
Castries (George F. L. Charles Airport) → Altenrhein (St Gallen Altenrhein Airport)
4,603 mi
7,408 km · 4,000 nm
9h 30m
estimated nonstop flight time
+6h
time difference · heading northeast
See live SLU→ACH fares Phone-only fares on this route — call free
Flight time details
4,603 miles nonstop takes roughly 9h 30m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 6-hour time gain when reading arrival times on your ticket.
The two airports
- SLU — George F. L. Charles Airport · Castries, Saint Lucia
- ACH — St Gallen Altenrhein Airport · Altenrhein, Switzerland
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 SLU
- UVF · Hewanorra International Airport20 mi away
- FDF · Martinique Aimé Césaire International Airport39 mi away
- SVD · Argyle International Airport61 mi away
- BQU · J F Mitchell Airport74 mi away
Near ACH
- HOH · Hohenems-Dornbirn Airport9 mi away
- FDH · Friedrichshafen Airport13 mi away
- ZRH · Zürich Airport47 mi away
- FMM · Memmingen Allgau Airport47 mi away
Frequently asked questions
How far is SLU from ACH?
The flight distance from Castries (SLU) to Altenrhein (ACH) is 4,603 miles (7,408 km, 4,000 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from SLU to ACH?
A nonstop flight takes about 9h 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 Castries and Altenrhein?
Altenrhein is 6 hours ahead of Castries.
What is the cheapest way to fly from SLU to ACH?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on SLU–ACH that never appear on search engines, with no booking fees.