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

Return flights

05 Dec - 09 Dec	Spirit Airlines
07 Dec - 24 Dec	Air Canada
03 Dec - 10 Dec	United
08 Dec - 15 Dec	United
30 Dec - 06 Jan	Air Canada
15 Dec - 21 Dec	British Airways
15 Dec - 22 Dec	Delta
18 Dec - 25 Dec	United
13 Dec - 20 Dec	United
21 Dec - 27 Dec	Delta
23 Dec - 30 Dec	United
28 Dec - 04 Jan	United

Also check the deals for one-way flights from Charlotte to Lisbon 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.

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Cheapest return flights from Charlotte to Lisbon in December from $535

Return flights