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

Return flights

11 May - 16 May	United	direct
07 May - 12 May	United	direct
10 May - 15 May	United	direct
31 May - 05 Jun	United	direct
05 May - 12 May	Delta
14 May - 17 May	United	direct
15 May - 15 Jun	United	direct
29 May - 04 Jun	United	direct
29 May - 07 Jun	United	direct
23 May - 26 May	United
22 May - 28 May	United	direct
21 May - 26 May	United
22 May - 25 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 186€

Return flights