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

Return flights

15 Dec - 15 Jan	IndiGo
20 Dec - 06 Jan	IndiGo
23 Dec - 12 Jan	Finnair
20 Dec - 07 Jan	IndiGo
31 Dec - 10 Jan	Uzbekistan Airways
16 Dec - 22 Jan	British Airways
25 Dec - 08 Jan	British Airways
25 Dec - 16 Jan	British Airways
15 Dec - 20 Jan	British Airways
15 Dec - 12 Jan	British Airways
11 Dec - 25 Dec	Finnair
20 Dec - 28 Dec	IndiGo
12 Dec - 22 Dec	IndiGo
25 Dec - 30 Dec	British Airways
21 Dec - 28 Dec	IndiGo
24 Dec - 31 Dec	KLM
23 Dec - 31 Dec	IndiGo
23 Dec - 29 Dec	Qatar Airways
10 Dec - 17 Dec	Turkmenistan Airlines
15 Dec - 22 Dec	SWISS

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 471€

Return flights