Cheapest return flights from Philadelphia to St. Thomas in April from $180

Best time to book flights for Philadelphia (PHL) to St. Thomas (STT) flights at AirHint

AirHint found the following cheapest return flights from Philadelphia (PHL) to St. Thomas (STT) in April 2025 (see full year).

Return flights

08 Apr - 15 Apr Spirit Airlines
01 Apr - 05 Apr Spirit Airlines
01 Apr - 08 Apr Spirit Airlines
07 Apr - 14 Apr Frontier Airlines
28 Apr - 01 May Frontier Airlines
03 Apr - 05 Apr Spirit Airlines
05 Apr - 07 Apr Spirit Airlines
04 Apr - 12 Apr Spirit Airlines
29 Apr - 03 May Spirit Airlines
29 Apr - 02 May Spirit Airlines
04 Apr - 07 Apr Spirit Airlines
26 Apr - 29 Apr Spirit Airlines
18 Apr - 22 Apr Spirit Airlines
30 Apr - 06 May Spirit Airlines
29 Apr - 06 May Spirit Airlines
29 Apr - 05 May Spirit Airlines
24 Apr - 05 May Spirit Airlines
29 Apr - 02 May American Airlines direct

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

Skyscanner

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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