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

Return flights

06 May - 13 May	jetBlue	direct
07 May - 10 May	jetBlue	direct
09 May - 16 May	jetBlue
02 May - 06 May	Delta
03 May - 07 May	Delta
05 May - 09 May	Delta
10 May - 14 May	Delta
09 May - 16 May	jetBlue	direct
09 May - 13 May	Delta
04 May - 08 May	Delta
30 May - 03 Jun	Delta
31 May - 04 Jun	Delta
29 May - 02 Jun	Delta

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 $173

Return flights