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

Return flights

21 Aug - 21 Aug	SWISS	direct
20 Aug - 26 Aug	easyJet	direct
20 Aug - 27 Aug	TAP	direct
20 Aug - 24 Aug	TAP	direct
20 Aug - 20 Aug	Lufthansa
27 Aug - 27 Aug	Lufthansa
10 Aug - 10 Aug	Lufthansa
21 Aug - 26 Aug	TAP
27 Aug - 02 Sep	easyJet
21 Aug - 26 Aug	easyJet	direct
29 Aug - 03 Sep	TAP
28 Aug - 02 Sep	TAP
22 Aug - 26 Aug	easyJet	direct
29 Aug - 03 Sep	easyJet	direct
31 Aug - 04 Sep	KLM
25 Aug - 02 Sep	TAP
27 Aug - 02 Sep	TAP	direct
28 Aug - 02 Sep	TAP	direct
26 Aug - 15 Sep	Vueling Airlines
29 Aug - 01 Sep	easyJet	direct

Also check the deals for one-way flights from Lisbon to Zurich 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 Lisbon to Zurich in August from 135€

Return flights