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GCI to SLU: distance & flight time
Guernsey (Guernsey Airport) → Castries (George F. L. Charles Airport)
4,078 mi
6,563 km · 3,544 nm
8h 28m
estimated nonstop flight time
-5h
time difference · heading west
See live GCI→SLU fares Phone-only fares on this route — call free
Flight time details
4,078 miles nonstop takes roughly 8h 28m 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
- GCI — Guernsey Airport · Guernsey, Guernsey
- SLU — George F. L. Charles Airport · Castries, Saint Lucia
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 GCI
- JER · Jersey Airport24 mi away
- ACI · Alderney Airport26 mi away
- CER · Cherbourg-Maupertus Airport53 mi away
- GFR · Granville Airport60 mi away
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
Frequently asked questions
How far is GCI from SLU?
The flight distance from Guernsey (GCI) to Castries (SLU) is 4,078 miles (6,563 km, 3,544 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from GCI to SLU?
A nonstop flight takes about 8h 28m 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 Guernsey and Castries?
Castries is 5 hours behind Guernsey.
What is the cheapest way to fly from GCI to SLU?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on GCI–SLU that never appear on search engines, with no booking fees.