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

Return flights

24 Dec - 31 Dec	Finnair
18 Dec - 31 Dec	Finnair
17 Dec - 24 Dec	Finnair
23 Dec - 02 Jan	Finnair
17 Dec - 26 Dec	British Airways
25 Dec - 02 Jan	Finnair
20 Dec - 03 Jan	British Airways
24 Dec - 02 Jan	Finnair
07 Dec - 15 Dec	Finnair
19 Dec - 27 Dec	Finnair
26 Dec - 02 Jan	SWISS
19 Dec - 04 Jan	TAP
20 Dec - 05 Jan	TAP
18 Dec - 02 Jan	TAP

Also check the deals for one-way flights from Delhi 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.

Book a cheap hotel in Lisbon

Cheap car rent in Lisbon

Cheapest return flights from Delhi to Lisbon in December from $564

Return flights