AirHint found the following cheapest return flights from Fortaleza (FOR) to Lisbon (LIS) in September 2025 (see full year).

Return flights

30 Sep - 15 Oct	Air France
28 Sep - 09 Oct	Air France
28 Sep - 04 Oct	Air France
07 Sep - 14 Sep	Air France
29 Sep - 13 Oct	LATAM Airlines Group
21 Sep - 09 Oct	Air France
29 Sep - 06 Oct	LATAM Airlines Group
23 Sep - 14 Oct	Air France
26 Sep - 09 Oct	Air France
12 Sep - 19 Sep	Air France
19 Sep - 21 Sep	Air France
28 Sep - 09 Oct	TAP	direct
21 Sep - 27 Sep	Air France
14 Sep - 20 Sep	Air France
26 Sep - 12 Oct	Air France
22 Sep - 29 Sep	Air France
21 Sep - 29 Sep	Air France
21 Sep - 27 Sep	TAP	direct
18 Sep - 22 Sep	TAP
02 Sep - 16 Sep	Air France

Also check the deals for one-way flights from Fortaleza to Lisbon 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 Fortaleza to Lisbon in September from $981

Return flights