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
28 Jul - 10 Aug	Ryanair
09 Jul - 24 Jul	Lufthansa
28 Jul - 06 Aug	Ryanair
31 Jul - 10 Aug	KLM
30 Jul - 06 Aug	Norwegian Air Sweden AOC
29 Jul - 10 Aug	Lufthansa
10 Jul - 11 Jul	Lufthansa
09 Jul - 10 Jul	Lufthansa
28 Jul - 03 Aug	Ryanair
31 Jul - 07 Aug	Lufthansa
28 Jul - 09 Aug	Lufthansa
29 Jul - 05 Aug	Lufthansa
13 Jul - 24 Jul	Lufthansa
09 Jul - 18 Jul	Lufthansa
24 Jul - 30 Jul	Norwegian Air Sweden AOC
11 Jul - 14 Jul	Lufthansa
10 Jul - 24 Jul	Lufthansa
10 Jul - 14 Jul	Lufthansa
28 Jul - 31 Jul	Lufthansa

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 $328

Return flights