Cheapest return flights from Philadelphia to San Juan in January from 119€

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

Return flights

12 Jan - 15 Jan Frontier Airlines
11 Jan - 15 Jan Frontier Airlines
07 Jan - 12 Jan Frontier Airlines
24 Jan - 26 Jan Frontier Airlines
09 Jan - 17 Jan Frontier Airlines
08 Jan - 12 Jan Frontier Airlines
23 Jan - 26 Jan Frontier Airlines
11 Jan - 14 Jan Frontier Airlines direct
06 Jan - 12 Jan Frontier Airlines direct
06 Jan - 10 Jan Frontier Airlines direct
20 Jan - 04 Feb Spirit Airlines
20 Jan - 03 Feb Spirit Airlines
21 Jan - 10 Feb Spirit Airlines
21 Jan - 04 Feb Spirit Airlines
21 Jan - 03 Feb Spirit Airlines
24 Jan - 11 Feb Spirit Airlines
24 Jan - 10 Feb Spirit Airlines
24 Jan - 04 Feb Spirit Airlines
24 Jan - 03 Feb Spirit Airlines
13 Jan - 03 Feb Spirit Airlines

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

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