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

Return flights

26 Apr - 29 Apr	United	direct
13 Apr - 16 Apr	United	direct
13 Apr - 17 Apr	United	direct
18 Apr - 22 Apr	United
08 Apr - 21 Apr	United
11 Apr - 15 Apr	United
14 Apr - 19 Apr	Frontier Airlines
07 Apr - 13 Apr	United
18 Apr - 25 Apr	United
06 Apr - 13 Apr	United
27 Apr - 04 May	United
25 Apr - 02 May	United
27 Apr - 03 May	United
29 Apr - 03 May	United
30 Apr - 03 May	United

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

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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Cheapest return flights from Washington to St. Thomas in April from 162€

Return flights