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

Return flights

22 Jul - 29 Jul	Lufthansa
22 Jul - 26 Aug	Lufthansa
29 Jul - 02 Aug	Ryanair
27 Jul - 04 Aug	Ryanair
21 Jul - 06 Aug	Lufthansa
24 Jul - 28 Jul	Wizz Air
22 Jul - 05 Aug	Lufthansa
29 Jul - 01 Aug	KLM
21 Jul - 28 Jul	Ryanair
23 Jul - 30 Jul	Transavia France
23 Jul - 27 Jul	Ryanair
22 Jul - 25 Jul	Ryanair
29 Jul - 31 Jul	easyJet
21 Jul - 05 Aug	Lufthansa
30 Jul - 03 Aug	Ryanair
25 Jul - 28 Jul	Lufthansa
23 Jul - 04 Aug	Finnair
21 Jul - 24 Jul	Lufthansa
26 Jul - 03 Aug	Wizz Air Malta
21 Jul - 25 Jul	Finnair

Also check the deals for one-way flights from Lisbon to Helsinki 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 Lisbon to Helsinki in July from 383€

Return flights