Cheapest return flights from Philadelphia to San Juan in January from 187€

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

Return flights

05 Jan - 09 Jan Frontier Airlines direct
06 Jan - 09 Jan Frontier Airlines direct
04 Jan - 09 Jan Frontier Airlines direct
09 Jan - 14 Jan Frontier Airlines
02 Jan - 09 Jan Frontier Airlines direct
08 Jan - 14 Jan Frontier Airlines
07 Jan - 12 Jan Frontier Airlines
23 Jan - 28 Jan Frontier Airlines direct
21 Jan - 25 Jan Frontier Airlines direct
21 Jan - 26 Jan Frontier Airlines direct
24 Jan - 04 Feb Frontier Airlines direct
22 Jan - 04 Feb Spirit Airlines
22 Jan - 11 Feb Spirit Airlines
24 Jan - 11 Feb Spirit Airlines
25 Jan - 04 Feb Spirit Airlines
25 Jan - 11 Feb Spirit Airlines
29 Jan - 04 Feb Spirit Airlines
29 Jan - 11 Feb Spirit Airlines
31 Jan - 04 Feb Spirit Airlines
31 Jan - 11 Feb Spirit Airlines

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

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