AirHint found the following cheapest return flights from Pittsburgh (PIT) to San Juan (SJU) in December 2025 (see full year).

Return flights

08 Dec - 12 Dec	Southwest Airlines
19 Dec - 02 Jan	Allegiant Air
21 Dec - 02 Jan	Allegiant Air
23 Dec - 02 Jan	Allegiant Air
23 Dec - 29 Dec	Spirit Airlines
23 Dec - 11 Jan	Spirit Airlines
19 Dec - 29 Dec	Spirit Airlines

Also check the deals for one-way flights from Pittsburgh to San Juan in December.

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.

Book a cheap hotel in San Juan

Cheap car rent in San Juan

Cheapest return flights from Pittsburgh to San Juan in December from 176€

Return flights