AirHint found the following cheapest return flights from Barcelona (BCN) to Cancun (CUN) in August 2026 (see full year).

Return flights

29 Aug - 19 Sep	United
28 Aug - 06 Sep	United
26 Aug - 30 Aug	British Airways
27 Aug - 03 Sep	British Airways
13 Aug - 27 Aug	Air Transat
15 Aug - 29 Aug	Air Transat
13 Aug - 24 Aug	Air Transat
20 Aug - 27 Aug	Air Transat
21 Aug - 01 Sep	Air Transat
24 Aug - 31 Aug	Air Transat
17 Aug - 26 Aug	Air Transat
08 Aug - 24 Aug	Air Transat
17 Aug - 28 Aug	Air Transat
17 Aug - 24 Aug	Air Transat
15 Aug - 04 Sep	Air Transat
15 Aug - 06 Sep	United
27 Aug - 03 Sep	Iberojet	direct

Also check the deals for one-way flights from Barcelona to Cancun 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 Barcelona to Cancun in August from 649€

Return flights