AirHint found the following cheapest return flights from Lisbon (LIS) to Praia, Santiago Island (RAI) in September 2025 (see full year).

Return flights

29 Sep - 29 Oct	Azores Airlines
25 Sep - 27 Oct	Azores Airlines
18 Sep - 29 Oct	Azores Airlines
11 Sep - 15 Sep	TAP	direct
11 Sep - 18 Sep	TAP	direct
18 Sep - 24 Sep	TAP	direct
22 Sep - 29 Sep	TAP	direct
05 Sep - 18 Sep	TAP	direct
26 Sep - 03 Oct	TAP	direct
12 Sep - 18 Sep	TAP	direct
17 Sep - 23 Sep	TAP	direct
04 Sep - 12 Sep	TAP	direct
04 Sep - 11 Sep	TAP	direct
18 Sep - 21 Sep	TAP	direct
30 Sep - 07 Oct	TAP	direct
28 Sep - 09 Oct	TAP	direct
29 Sep - 07 Oct	TAP	direct
24 Sep - 02 Oct	TAP	direct
29 Sep - 05 Oct	TAP	direct
24 Sep - 01 Oct	Azores Airlines

Also check the deals for one-way flights from Lisbon to Praia, Santiago Island in September.

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 Praia, Santiago Island in September from $339

Return flights