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Flights between Port of Spain (POS) and Castries (SLU)

Piarco International Airport, Trinidad and Tobago ↔ George F. L. Charles Airport, Saint Lucia

A direct route between Port of Spain and Castries appears in the OpenFlights route network.

Airlines currently operating this route:

Observed from recent schedules · as of 25 Jul 2026 — sampled, not a live timetable; confirm with the airline.

Caribbean Airlines (BW)
Distance
383 km
238 miles
Est. flight time
59m
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 Trinidad and Tobago

Jan
30°
35/25
70mm
Feb
31°
36/26
40mm
Mar
31°
36/26
45mm
Apr
32°
37/27
60mm
May
31°
36/26
95mm
Jun
31°
36/26
200mm
Jul
31°
36/26
230mm
Aug
31°
36/26
245mm
Sep
31°
36/26
195mm
Oct
31°
36/26
175mm
Nov
31°
36/26
200mm
Dec
31°
36/26
130mm

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

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

Trinidad and Tobago: Normal precautions (UK FCDO) ↗Saint Lucia: Normal precautions (UK FCDO) ↗

Common questions

How far is Port of Spain from Castries?

Port of Spain (POS) and Castries (SLU) are around 383 km (238 miles) apart — an estimated 59m by air. Distances and flight times are great-circle estimates.

Which airlines have operated the POS–SLU route?

Airlines recorded operating this route in the OpenFlights network include Caribbean Airlines. This reflects historical scheduled service and may be out of date.

What is the time difference between Port of Spain and Castries?

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.

Are there travel advisories for Trinidad and Tobago and Saint Lucia?

The UK FCDO currently rates Trinidad and Tobago as Normal precautions; The UK FCDO rates Saint Lucia as Normal precautions. Check the official sources before you travel.

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