Cheapest return flights from Newark to San Juan in August from $143

Best time to book flights for Newark (EWR) to San Juan (SJU) flights at AirHint

AirHint found the following cheapest return flights from Newark (EWR) to San Juan (SJU) in August 2025 (see full year).

Return flights

11 Aug - 14 Aug Frontier Airlines direct
12 Aug - 19 Aug Frontier Airlines
11 Aug - 13 Aug Frontier Airlines direct
06 Aug - 13 Aug Frontier Airlines direct
06 Aug - 12 Aug Frontier Airlines direct
10 Aug - 11 Aug Frontier Airlines direct
06 Aug - 11 Aug Frontier Airlines direct
16 Aug - 19 Aug Frontier Airlines
12 Aug - 19 Aug Frontier Airlines direct
11 Aug - 18 Aug Frontier Airlines direct
25 Aug - 03 Sep United direct
17 Aug - 04 Sep Frontier Airlines direct
29 Aug - 04 Sep jetBlue
27 Aug - 02 Sep jetBlue
29 Aug - 02 Sep jetBlue
28 Aug - 02 Sep jetBlue
28 Aug - 04 Sep jetBlue
29 Aug - 08 Sep jetBlue
29 Aug - 08 Sep jetBlue direct
26 Aug - 02 Sep Lufthansa direct

Also check the deals for one-way flights from Newark to San Juan in August.

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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