AirHint found the following cheapest return flights from Newark (EWR) to St. Croix Island (STX) in July 2025 (see full year).

Return flights

19 Jul - 24 Jul	Frontier Airlines
23 Jul - 27 Jul	Frontier Airlines
26 Jul - 29 Jul	Frontier Airlines
22 Jul - 24 Jul	Spirit Airlines
20 Jul - 29 Jul	Spirit Airlines
22 Jul - 29 Jul	Spirit Airlines
23 Jul - 29 Jul	Spirit Airlines
19 Jul - 29 Jul	Spirit Airlines
18 Jul - 29 Jul	Spirit Airlines
20 Jul - 21 Jul	Spirit Airlines
26 Jul - 14 Aug	Spirit Airlines
26 Jul - 15 Aug	Spirit Airlines

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

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

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Cheapest return flights from Newark to St. Croix Island in July from $159

Return flights