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Cheapest one-way flights from Washington (IAD) to St. Thomas (STT), December

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Dates, airline, and price
Dates	Airline	Price
21 Dec	Frontier Airlines
21 Dec	United Direct Flight
23 Dec	United Direct Flight
27 Dec	Allegiant Air
27 Dec	United Direct Flight

deals for return flights from Washington to St. Thomas in December.

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Updated Jul 13, 2026.

About these fares

These results come from our latest search across airlines for your currency. Prices change quickly and are not locked until you complete booking—always confirm the total and fare rules on the partner site.

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Cheapest one-way flights from Washington (IAD) to St. Thomas (STT), December

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