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

Return flights

18 Aug - 05 Sep	Lufthansa
19 Aug - 28 Aug	Lufthansa
21 Aug - 29 Aug	Lufthansa
21 Aug - 28 Aug	Lufthansa
19 Aug - 26 Aug	Lufthansa
18 Aug - 27 Aug	SWISS
18 Aug - 02 Sep	Lufthansa
25 Aug - 04 Sep	Finnair
18 Aug - 24 Aug	Lufthansa
21 Aug - 31 Aug	Lufthansa
17 Aug - 26 Aug	Finnair
20 Aug - 27 Aug	Finnair
20 Aug - 31 Aug	Finnair
16 Aug - 06 Sep	Finnair
17 Aug - 17 Sep	Finnair
28 Aug - 04 Sep	Finnair
30 Aug - 22 Sep	Air France
28 Aug - 09 Sep	Finnair
31 Aug - 09 Sep	Finnair
31 Aug - 07 Sep	Finnair

Also check the deals for one-way flights from Delhi to Lisbon in August.

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 August from 653€

Return flights