AirHint found the following cheapest return flights from Lisbon (LIS) to Singapore (SIN) in August 2026 (see full year).

Return flights

18 Aug - 08 Sep	Air France
22 Aug - 08 Sep	KLM
30 Aug - 06 Sep	Finnair
25 Aug - 01 Sep	Finnair
26 Aug - 02 Sep	Finnair
24 Aug - 31 Aug	Finnair
20 Aug - 27 Aug	Finnair
23 Aug - 30 Aug	Finnair
16 Aug - 05 Sep	Finnair
19 Aug - 26 Aug	Finnair
18 Aug - 25 Aug	Qatar Airways
05 Aug - 12 Aug	Etihad Airways
12 Aug - 19 Aug	Ryanair
29 Aug - 05 Sep	TAP
22 Aug - 29 Aug	TAP
15 Aug - 26 Aug	TAP
02 Aug - 09 Aug	easyJet

Also check the deals for one-way flights from Lisbon to Singapore 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 Singapore in August from $753

Return flights