AirHint found the following cheapest return flights from Newark (EWR) to San Juan (SJU) in April 2026 (see full year).

Return flights

12 Apr - 18 Apr	jetBlue
13 Apr - 18 Apr	jetBlue
30 Apr - 04 May	jetBlue
01 Apr - 07 Apr	Spirit Airlines
01 Apr - 08 Apr	Spirit Airlines
01 Apr - 07 Apr	Spirit Airlines	direct
06 Apr - 14 Apr	Spirit Airlines	direct
01 Apr - 08 Apr	Spirit Airlines	direct
13 Apr - 14 Apr	Spirit Airlines	direct
08 Apr - 09 Apr	Spirit Airlines	direct
08 Apr - 14 Apr	Spirit Airlines	direct
16 Apr - 17 May	jetBlue	direct

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

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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Cheapest return flights from Newark to San Juan in April from $215

Return flights