Cheapest one-way flights from Philadelphia to St. Croix Island in July from $165

AirHint found the following cheapest one-way flights from Philadelphia (PHL) to St. Croix Island (STX) in July 2025 (see full year).

One-Way flights

22 Jul Spirit Airlines
27 Jul Spirit Airlines
16 Jul Spirit Airlines
15 Jul Spirit Airlines

Also check the deals for return flights from Philadelphia to St. Croix Island in July.

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.

Book a cheap hotel in St. Croix Island

Cheap car rent in St. Croix Island

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