Cheapest return flights from Newark to San Juan in September from $212

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 September 2025 (see full year).

Return flights

18 Sep - 18 Sep jetBlue direct
25 Sep - 25 Sep jetBlue direct
23 Sep - 08 Oct United direct
29 Sep - 31 Oct United direct
19 Sep - 21 Sep United direct
02 Sep - 18 Sep jetBlue direct
26 Sep - 23 Oct United direct
24 Sep - 09 Oct jetBlue direct
16 Sep - 24 Sep Delta
10 Sep - 18 Sep Spirit Airlines
03 Sep - 30 Sep Spirit Airlines
25 Sep - 04 Oct jetBlue
13 Sep - 18 Sep Spirit Airlines
03 Sep - 30 Sep United direct
03 Sep - 10 Sep United direct
25 Sep - 04 Oct United direct

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

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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