AirHint found the following cheapest return flights from Brasilia (BSB) to Cancun (CUN) in September 2025 (see full year).

Return flights

17 Sep - 20 Sep	Copa
20 Sep - 23 Sep	Copa
23 Sep - 30 Sep	Copa
16 Sep - 29 Sep	Copa
17 Sep - 24 Sep	Copa
16 Sep - 18 Sep	Copa
23 Sep - 27 Sep	Copa
21 Sep - 25 Sep	Copa
17 Sep - 22 Sep	Copa
19 Sep - 26 Sep	Copa
29 Sep - 05 Oct	Copa
23 Sep - 02 Oct	Copa
25 Sep - 01 Oct	Copa
27 Sep - 04 Oct	Copa
29 Sep - 03 Oct	Copa
27 Sep - 10 Oct	Copa
27 Sep - 04 Oct	GOL Linhas Aéreas	direct

Also check the deals for one-way flights from Brasilia to Cancun 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 Brasilia to Cancun in September from $414

Return flights