AirHint found the following cheapest one-way flights from Washington (IAD) to Port-of-spain (POS) in August 2025 (see full year).
One-Way flights
| 20 Aug | Copa | ||
| 28 Aug | United | ||
| 29 Aug | Frontier Airlines |
Also check the deals for return flights from Washington to Port-of-spain in August.
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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