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

Return flights

28 Aug - 17 Sep	transavia	direct
27 Aug - 04 Sep	transavia
27 Aug - 04 Sep	transavia	direct
28 Aug - 01 Sep	transavia
30 Aug - 11 Sep	transavia
30 Aug - 08 Sep	transavia
20 Aug - 30 Aug	transavia
28 Aug - 31 Aug	transavia
21 Aug - 30 Aug	transavia
26 Aug - 05 Sep	transavia
29 Aug - 05 Sep	transavia
30 Aug - 05 Sep	transavia
29 Aug - 06 Sep	transavia
25 Aug - 31 Aug	transavia
21 Aug - 27 Aug	transavia
21 Aug - 23 Aug	transavia
20 Aug - 28 Aug	transavia	direct
14 Aug - 23 Aug	transavia
19 Aug - 23 Aug	transavia
16 Aug - 23 Aug	transavia

Also check the deals for one-way flights from Rotterdam to Lisbon 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 Rotterdam to Lisbon in August from $192

Return flights