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SLU to USI: distance & flight time
Castries (George F. L. Charles Airport) → Mabaruma (Mabaruma Airport)
410 mi
660 km · 357 nm
1h 22m
estimated nonstop flight time
Same time
time difference · heading south
See live SLU→USI fares Phone-only fares on this route — call free
Flight time details
410 miles nonstop takes roughly 1h 22m gate to gate, flying south. Add 45–90 minutes per connection if there's no nonstop service. Both airports share the same local time, so schedules read exactly as flown.
The two airports
- SLU — George F. L. Charles Airport · Castries, Saint Lucia
- USI — Mabaruma Airport · Mabaruma, Guyana
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 USI
- TMO · Tumeremo Airport136 mi away
- GFO · Bartica A Airport149 mi away
- OGL · Eugene F. Correira International Airport150 mi away
Frequently asked questions
How far is SLU from USI?
The flight distance from Castries (SLU) to Mabaruma (USI) is 410 miles (660 km, 357 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from SLU to USI?
A nonstop flight takes about 1h 22m 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 SLU to USI?
Nonstop service on SLU–USI 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 1h 22m nonstop estimate.
What is the cheapest way to fly from SLU to USI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on SLU–USI that never appear on search engines, with no booking fees.
Why are some SLU to USI fares phone-only?
Consolidator contracts let us sell certain SLU–USI 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.