Cheapest return flights from Pittsburgh to Lisbon in December from $495

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

Return flights

08 Dec - 24 Dec Delta
24 Dec - 17 Jan British Airways
26 Dec - 17 Jan Air Canada
25 Dec - 17 Jan Air Canada
20 Dec - 10 Jan Spirit Airlines
23 Dec - 30 Dec United
24 Dec - 01 Jan Allegiant Air
19 Dec - 28 Dec Spirit Airlines

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

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