AirHint found the following cheapest return flights from Dallas (DAL) to Cancun (CUN) in August 2025 (see full year).

Return flights

17 Aug - 21 Aug	Aeromexico
25 Aug - 29 Aug	Southwest Airlines
19 Aug - 21 Aug	Southwest Airlines
31 Aug - 09 Sep	Southwest Airlines
19 Aug - 20 Aug	Aeromexico
12 Aug - 19 Aug	Aeromexico
12 Aug - 14 Aug	Aeromexico
09 Aug - 13 Aug	Aeromexico
10 Aug - 16 Aug	Aeromexico
16 Aug - 21 Aug	Aeromexico
12 Aug - 16 Aug	Aeromexico
31 Aug - 07 Sep	Southwest Airlines
23 Aug - 06 Sep	Delta
30 Aug - 06 Sep	Aeromexico
28 Aug - 01 Sep	Aeromexico
30 Aug - 01 Sep	Southwest Airlines
29 Aug - 02 Sep	Aeromexico
29 Aug - 01 Sep	Southwest Airlines
27 Aug - 01 Sep	Aeromexico

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

Book a cheap hotel in Cancun

Cheap car rent in Cancun

Cheapest return flights from Dallas to Cancun in August from $231

Return flights