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

One-Way flights

04 Oct	Caribbean Airlines	direct
11 Oct	Caribbean Airlines	direct
18 Oct	Caribbean Airlines	direct
17 Oct	Caribbean Airlines	direct
20 Oct	Caribbean Airlines	direct
03 Oct	Caribbean Airlines	direct
05 Oct	Caribbean Airlines	direct
10 Oct	Caribbean Airlines	direct
12 Oct	Caribbean Airlines	direct
13 Oct	Caribbean Airlines	direct

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

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.

Book a cheap hotel in Castries

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Cheapest one-way flights from Port-of-spain to Castries in October from 140€

One-Way flights