Cheapest return flights from Newark to San Juan in January from $106

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

Return flights

12 Jan - 13 Feb Frontier Airlines direct
19 Jan - 24 Jan Frontier Airlines direct
12 Jan - 20 Jan Frontier Airlines direct
31 Jan - 11 Feb Frontier Airlines direct
31 Jan - 12 Feb Frontier Airlines direct
12 Jan - 15 Jan Frontier Airlines
19 Jan - 26 Jan Frontier Airlines
14 Jan - 21 Jan Frontier Airlines
12 Jan - 21 Jan Frontier Airlines
14 Jan - 17 Jan Frontier Airlines
12 Jan - 16 Jan Frontier Airlines direct
31 Jan - 07 Feb Frontier Airlines direct
29 Jan - 03 Feb Frontier Airlines direct
14 Jan - 16 Jan Frontier Airlines
14 Jan - 16 Jan Frontier Airlines direct
27 Jan - 03 Feb Frontier Airlines direct
30 Jan - 03 Feb Spirit Airlines direct
20 Jan - 13 Feb Spirit Airlines
20 Jan - 13 Feb jetBlue direct
31 Jan - 04 Feb Frontier Airlines direct

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

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