AirHint found the following cheapest return flights from Houston (IAH) to Port-of-spain (POS) in July 2025 (see full year).

Return flights

25 Jul - 04 Aug	Spirit Airlines
25 Jul - 03 Aug	Spirit Airlines
16 Jul - 23 Jul	Spirit Airlines
24 Jul - 28 Jul	Frontier Airlines
25 Jul - 04 Aug	United	direct
16 Jul - 23 Jul	United	direct
25 Jul - 30 Jul	United	direct
25 Jul - 03 Aug	United	direct
20 Jul - 24 Jul	United	direct
24 Jul - 28 Jul	United	direct

Also check the deals for one-way flights from Houston to Port-of-spain 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 return flights from Houston to Port-of-spain in July from 509€

Return flights