Cheapest return flights from Washington to Cancun in September from $139

Best time to book flights for Washington (IAD) to Cancun (CUN) flights at AirHint

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

Return flights

04 Sep - 08 Sep Avianca
18 Sep - 22 Sep Volaris El Salvador
14 Sep - 17 Sep Volaris El Salvador
17 Sep - 01 Oct Avianca
08 Sep - 15 Sep Volaris El Salvador
24 Sep - 15 Oct Volaris El Salvador
10 Sep - 17 Sep Volaris El Salvador
28 Sep - 06 Oct Volaris El Salvador
23 Sep - 14 Oct Volaris El Salvador
07 Sep - 16 Sep Volaris El Salvador
16 Sep - 30 Sep Volaris El Salvador
02 Sep - 16 Sep Volaris El Salvador
09 Sep - 16 Sep United direct
02 Sep - 09 Sep Volaris El Salvador
24 Sep - 21 Oct Aeromexico
23 Sep - 14 Oct United direct
23 Sep - 18 Oct Volaris El Salvador
28 Sep - 04 Oct Volaris El Salvador
16 Sep - 11 Oct Volaris El Salvador
28 Sep - 04 Oct United direct

Also check the deals for one-way flights from Washington to Cancun in September.

Skyscanner

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