Cheapest return flights from Philadelphia to St. Croix Island in March from $362

AirHint found the following cheapest return flights from Philadelphia (PHL) to St. Croix Island (STX) in March 2026 (see full year).

Return flights

01 Mar - 05 Mar American Airlines
17 Mar - 21 Mar Frontier Airlines
09 Mar - 27 Mar Spirit Airlines
09 Mar - 21 Mar Spirit Airlines
30 Mar - 11 Apr Spirit Airlines
06 Mar - 21 Mar Spirit Airlines
06 Mar - 09 Mar Spirit Airlines
21 Mar - 27 Mar Spirit Airlines
21 Mar - 30 Mar Spirit Airlines
27 Mar - 30 Mar Spirit Airlines
27 Mar - 11 Apr Spirit Airlines

Also check the deals for one-way flights from Philadelphia to St. Croix Island in March.

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