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

Return flights

08 May - 18 May	jetBlue
09 May - 18 May	jetBlue
07 May - 18 May	jetBlue
25 May - 01 Jun	jetBlue
04 May - 09 May	jetBlue	direct
30 May - 04 Jun	jetBlue	direct
14 May - 18 May	jetBlue
17 May - 23 May	United	direct
06 May - 13 May	United	direct
01 May - 06 May	jetBlue
20 May - 24 May	jetBlue
31 May - 06 Jun	jetBlue	direct
09 May - 18 May	United	direct

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

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 May from $185

Return flights