AirHint found the following cheapest return flights from Helsinki (HEL) to Lisbon (LIS) in July 2025 (see full year).

Return flights

28 Jul - 11 Aug	Lufthansa
29 Jul - 06 Aug	Lufthansa
21 Jul - 11 Aug	Ryanair
31 Jul - 07 Aug	Lufthansa
31 Jul - 05 Aug	KLM
24 Jul - 07 Aug	Lufthansa
30 Jul - 06 Aug	Lufthansa
31 Jul - 06 Aug	Lufthansa
26 Jul - 09 Aug	Ryanair
21 Jul - 29 Jul	Ryanair
31 Jul - 10 Aug	Finnair
21 Jul - 30 Jul	Ryanair
26 Jul - 31 Jul	Ryanair
12 Jul - 15 Jul	Lufthansa
21 Jul - 27 Jul	Ryanair
27 Jul - 30 Jul	Norwegian Air Sweden AOC
29 Jul - 31 Jul	Lufthansa
21 Jul - 31 Jul	Ryanair
23 Jul - 30 Jul	Norwegian Air Sweden AOC
25 Jul - 30 Jul	Norwegian Air Sweden AOC

Also check the deals for one-way flights from Helsinki to Lisbon in July.

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 Helsinki to Lisbon in July from 303€

Return flights