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

Return flights

23 Sep - 29 Sep	TAP	direct
10 Sep - 25 Sep	TAP	direct
23 Sep - 30 Sep	TAP	direct
30 Sep - 25 Oct	TAP	direct
09 Sep - 19 Sep	TAP	direct
26 Sep - 30 Sep	TAP	direct
20 Sep - 04 Oct	TAP	direct
20 Sep - 09 Oct	TAP	direct
26 Sep - 09 Oct	TAP	direct
04 Sep - 11 Sep	TAP	direct
18 Sep - 30 Sep	TAP	direct
11 Sep - 18 Sep	TAP	direct
09 Sep - 25 Sep	TAP	direct
09 Sep - 24 Sep	TAP	direct
20 Sep - 06 Oct	TAP	direct
15 Sep - 02 Oct	TAP	direct
19 Sep - 06 Oct	TAP	direct
16 Sep - 06 Oct	TAP	direct
15 Sep - 06 Oct	TAP	direct

Also check the deals for one-way flights from Belem 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.

Book a cheap hotel in Lisbon

Cheap car rent in Lisbon

Cheapest return flights from Belem to Lisbon in September from $1014

Return flights