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

Return flights

21 Dec - 30 Dec	Finnair
15 Dec - 29 Dec	British Airways
30 Dec - 05 Jan	Finnair
24 Dec - 02 Jan	Finnair
23 Dec - 02 Jan	Finnair
27 Dec - 03 Jan	Finnair
20 Dec - 27 Dec	British Airways
10 Dec - 22 Dec	Finnair

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.

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Cheapest return flights from Delhi to Lisbon in December from 497€

Return flights