AirHint found the following cheapest one-way flights from Port-of-spain (POS) to Castries (SLU) in July 2025 (see full year).

One-Way flights

26 Jul	Caribbean Airlines	direct
23 Jul	Caribbean Airlines	direct
25 Jul	Caribbean Airlines	direct
28 Jul	Caribbean Airlines	direct
30 Jul	Caribbean Airlines	direct
17 Jul	Caribbean Airlines
14 Jul	Caribbean Airlines
27 Jul	Caribbean Airlines
22 Jul	Caribbean Airlines
20 Jul	Hahn Air Technologies

Also check the deals for return flights from Port-of-spain to Castries in July.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest one-way flights from Port-of-spain to Castries in July from $156

One-Way flights