AirHint found the following cheapest return flights from Washington (DCA) to Port-of-spain (POS) in March 2026 (see full year).

Return flights

18 Mar - 25 Mar	Air Canada
14 Mar - 21 Mar	Air Canada
19 Mar - 26 Mar	Air Canada
22 Mar - 30 Mar	American Airlines

Also check the deals for one-way flights from Washington to Port-of-spain in March.

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 Washington to Port-of-spain in March from $384

Return flights