Cheapest return flights from Washington to St. Thomas in April from $191

AirHint found the following cheapest return flights from Washington (IAD) to St. Thomas (STT) in April 2026 (see full year).

Return flights

13 Apr - 16 Apr United direct
08 Apr - 21 Apr United direct
18 Apr - 22 Apr United
25 Apr - 02 May United
28 Apr - 05 May United direct
11 Apr - 15 Apr United
18 Apr - 25 Apr United
06 Apr - 13 Apr Frontier Airlines
27 Apr - 04 May United
02 Apr - 10 Apr Frontier Airlines
03 Apr - 09 Apr Frontier Airlines
02 Apr - 06 Apr Frontier Airlines
27 Apr - 03 May United
02 Apr - 09 Apr American Airlines

Also check the deals for one-way flights from Washington to St. Thomas in April.

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