Cheapest return flights from Washington (IAD) to Port-of-spain (POS), September

Select a price to book. see full year.

Dates, airline, and price
Dates Airline Price
22 Sep 06 Oct Frontier Airlines
23 Sep 30 Sep United
10 Sep 14 Sep Frontier Airlines
09 Sep 14 Sep Frontier Airlines
17 Sep 19 Sep Frontier Airlines
17 Sep 29 Sep Air Canada
03 Sep 07 Sep United
04 Sep 07 Sep Air Canada
03 Sep 09 Sep United
04 Sep 09 Sep United
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deals for one-way flights from Washington to Port-of-spain in September.

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Updated Aug 26, 2026.

About these fares

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