Cheapest return flights from Newark to San Juan in January from 91€

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

Return flights

06 Jan - 09 Jan Frontier Airlines direct
28 Jan - 04 Feb Frontier Airlines direct
12 Jan - 31 Jan Frontier Airlines direct
31 Jan - 03 Feb Frontier Airlines direct
31 Jan - 13 Feb Frontier Airlines direct
28 Jan - 31 Jan Frontier Airlines direct
31 Jan - 04 Feb Frontier Airlines direct
31 Jan - 07 Feb Frontier Airlines direct
12 Jan - 16 Jan Frontier Airlines direct
11 Jan - 16 Jan Frontier Airlines direct
07 Jan - 11 Jan Frontier Airlines direct
02 Jan - 09 Jan Frontier Airlines direct
11 Jan - 14 Jan Frontier Airlines direct
07 Jan - 14 Jan Frontier Airlines direct
06 Jan - 12 Jan Frontier Airlines direct
28 Jan - 01 Feb Frontier Airlines direct
31 Jan - 08 Feb Frontier Airlines direct
31 Jan - 05 Feb United direct
29 Jan - 01 Feb Frontier Airlines direct
20 Jan - 04 Feb Spirit Airlines direct

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

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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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