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Flights between Castries (SLU) and Sint Maarten (SXM)

George F. L. Charles Airport, Saint Lucia ↔ Princess Juliana International Airport, Netherlands Antilles

A direct route between Castries and Sint Maarten appears in the OpenFlights route network.

Confirming who flies SLU–SXM

We're verifying which airlines currently operate SLU–SXM. Current operators will appear here as our data refreshes.

Distance
501 km
311 miles
Est. flight time
1h 8m
great-circle estimate
Time difference
None
varies with DST
View this route on the live map →Search fares on Skyscanner ↗

Climate

Typical monthly temperatures in Saint Lucia

Jan
25°
30/20
Feb
25°
30/20
Mar
26°
31/21
Apr
27°
32/22
May
27°
32/22
Jun
27°
32/22
Jul
27°
32/22
Aug
27°
32/22
Sep
27°
32/22
Oct
27°
32/22
Nov
27°
32/22
Dec
26°
31/21

Mean °C (high/low below) · country-level monthly normals, not airport-specific.

Travel advisories

Saint Lucia: Normal precautions (UK FCDO) ↗

Common questions

How far is Castries from Sint Maarten?

Castries (SLU) and Sint Maarten (SXM) are around 501 km (311 miles) apart — an estimated 1h 8m by air. Distances and flight times are great-circle estimates.

What is the time difference between Castries and Sint Maarten?

Both airports keep the same time — no time difference.

When is it warmest in Saint Lucia?

Across Saint Lucia, the warmest month on average is April, with mean temperatures around 27°C. These are country-level monthly climate normals, not airport-specific.

Is there a travel advisory for Saint Lucia?

The UK FCDO currently rates Saint Lucia as Normal precautions. Check the official source before you travel.

Distances and flight times are great-circle estimates, not booked block times.