Cheapest return DCA–STT flights, May

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

Return flights

18 May - 21 May United
14 May - 20 May United
15 May - 20 May United
19 May - 23 May United
18 May - 23 May United
07 May - 10 May United
16 May - 20 May United
17 May - 21 May United
16 May - 19 May United
29 May - 02 Jun Delta
16 May - 21 May United
31 May - 07 Jun United
31 May - 08 Jun United
25 May - 01 Jun United
25 May - 05 Jun United
29 May - 04 Jun United
29 May - 05 Jun United
29 May - 06 Jun United

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

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