Cheapest return flights from Philadelphia to St. Thomas in March from $179

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

Return flights

04 Mar - 11 Mar Spirit Airlines
09 Mar - 11 Mar Spirit Airlines
04 Mar - 10 Mar Spirit Airlines
16 Mar - 01 Apr Spirit Airlines
01 Mar - 11 Mar Spirit Airlines
07 Mar - 12 Mar Spirit Airlines
10 Mar - 11 Mar Spirit Airlines
11 Mar - 25 Mar Spirit Airlines
09 Mar - 25 Mar Spirit Airlines
04 Mar - 16 Mar Spirit Airlines
31 Mar - 01 Apr Spirit Airlines
18 Mar - 01 Apr Spirit Airlines
04 Mar - 12 Mar Spirit Airlines
19 Mar - 01 Apr Spirit Airlines
31 Mar - 08 Apr Spirit Airlines
19 Mar - 08 Apr Spirit Airlines
18 Mar - 08 Apr Spirit Airlines
31 Mar - 05 Apr jetBlue
16 Mar - 05 Apr Spirit Airlines
28 Mar - 01 Apr Spirit Airlines

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

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